New engine for OFNA truggy (need advise)
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New engine for OFNA truggy (need advise)
I have an OFNA Hyper ST truggy...
The MacStar .28 crapped out and it's time to get a new mill. I have narrowed it down to three choices. Everyone's input and suggestions are greatly appreciated.
1. LRP ZR.28R Spec 3 the one with the pull start because I don't own a starter box
2. Novarossi N21R-BF .21 I'll need to get a starter box
3. LRP ZR.30 Spec
I will race about once a month, pending kids activities and wife's plans... however, I do a lot of around the house bashing too.
Looking for something that will meet both objectives and be a cost effective and quality option.
Amainhobbies said any of the above would be great... just looking for input from fellow RC enthusiasts.
#2
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RE: New engine for OFNA truggy (need advise)
None of the above...in a Truggy you want a Picco 28...bumpstart preferable
The LRP's are decent...but not really Truggy engines
the N21 is a gutless hunk and will very underpowered in a Hyper ST
The LRP's are decent...but not really Truggy engines
the N21 is a gutless hunk and will very underpowered in a Hyper ST
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RE: New engine for OFNA truggy (need advise)
I was soooo disappointed with the MacStar .28 that I was going to stay away from the OFNA mills...
However, not opposed to researching and checking them out. Thanks for the quick input
However, not opposed to researching and checking them out. Thanks for the quick input
#5
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: DWkyosho
I was soooo disappointed with the MacStar .28 that I was going to stay away from the OFNA mills...
However, not opposed to researching and checking them out. Thanks for the quick input <
I was soooo disappointed with the MacStar .28 that I was going to stay away from the OFNA mills...
However, not opposed to researching and checking them out. Thanks for the quick input <
Macstar is a Taiwanese made junk engine...it is made by Kingstar engines, the same company that makes the HPI K 4.6, Axial 28 and the K 5.9......... OFNA is just a North American Distributor........... Picco is made in Italy and is night and day better then any Taiwanese made engine...Once again OFNA does not build the engines, they just distribute....... For a Truggy you want a Bumpstart Picco 28 or Jammin 28......... heads and tails better then any of the engines you listed...
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: DWkyosho
I have an OFNA Hyper ST truggy...
The MacStar .28 crapped out and it's time to get a new mill. I have narrowed it down to three choices. Everyone's input and suggestions are greatly appreciated.
1. LRP ZR.28R Spec 3 the one with the pull start because I don't own a starter box
2. Novarossi N21R-BF .21 I'll need to get a starter box
3. LRP ZR.30 Spec
I will race about once a month, pending kids activities and wife's plans... however, I do a lot of around the house bashing too.
Looking for something that will meet both objectives and be a cost effective and quality option.
Amainhobbies said any of the above would be great... just looking for input from fellow RC enthusiasts.
I have an OFNA Hyper ST truggy...
The MacStar .28 crapped out and it's time to get a new mill. I have narrowed it down to three choices. Everyone's input and suggestions are greatly appreciated.
1. LRP ZR.28R Spec 3 the one with the pull start because I don't own a starter box
2. Novarossi N21R-BF .21 I'll need to get a starter box
3. LRP ZR.30 Spec
I will race about once a month, pending kids activities and wife's plans... however, I do a lot of around the house bashing too.
Looking for something that will meet both objectives and be a cost effective and quality option.
Amainhobbies said any of the above would be great... just looking for input from fellow RC enthusiasts.
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RE: New engine for OFNA truggy (need advise)
os 28. Bit expensive but :
great power bottom to top
super easy to tune and maintain
easy to break in
great power bottom to top
super easy to tune and maintain
easy to break in
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RE: New engine for OFNA truggy (need advise)
spoke with the folks at Nitrohouse and I think a Picco .28 or a Jammin would be a good option also... will need to get a start box but that is probably long overdue anyways. Keep those suggestions coming...
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: DWkyosho
spoke with the folks at Nitrohouse and I think a Picco .28 or a Jammin would be a good option also... will need to get a start box but that is probably long overdue anyways. Keep those suggestions coming...
spoke with the folks at Nitrohouse and I think a Picco .28 or a Jammin would be a good option also... will need to get a start box but that is probably long overdue anyways. Keep those suggestions coming...
#10
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RE: New engine for OFNA truggy (need advise)
The Hyper is heavy, so a 28 is a legit option, also for racing.. (runtime is overrated for most casual club-racing IMO..) Yes you need a starterbox. I say Jammin 28, or if you can afford it, OS 25XZ or OS 28XZ...
The LRP 28 Spec 3 Truggy version and Losi 454 from an 8T2.0(the latter dirt cheap on ebay) are good messing-around engines if you're on a budget and just want to bash around the yard or park.. But for racing I'd go for the Jammin JPX 28 - maybe even the 21, and if you can afford it, either of the OS engines... The OS 25XZ, at least theoretically(don't have one or know really what kind of run-time they get..), is the ideal compromise between the big power of a 28, and the better run-time of a 21. If I had the budget, that's what I'd get...
Amain has probably 20-30 engines that you'd be thrilled with, circumstances depending, from 21-30...., from $150-$400. I say go look around, read the feedback, think about how seriously you want to get into racing, what your budget really is - including starterbox with batteries, then come ask again once you've found a few that peak your interest...
The LRP 28 Spec 3 Truggy version and Losi 454 from an 8T2.0(the latter dirt cheap on ebay) are good messing-around engines if you're on a budget and just want to bash around the yard or park.. But for racing I'd go for the Jammin JPX 28 - maybe even the 21, and if you can afford it, either of the OS engines... The OS 25XZ, at least theoretically(don't have one or know really what kind of run-time they get..), is the ideal compromise between the big power of a 28, and the better run-time of a 21. If I had the budget, that's what I'd get...
Amain has probably 20-30 engines that you'd be thrilled with, circumstances depending, from 21-30...., from $150-$400. I say go look around, read the feedback, think about how seriously you want to get into racing, what your budget really is - including starterbox with batteries, then come ask again once you've found a few that peak your interest...
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: HerrSavage
The Hyper is heavy, so a 28 is a legit option, also for racing.. (runtime is overrated for most casual club-racing IMO..) Yes you need a starterbox. I say Jammin 28, or if you can afford it, OS 25XZ or OS 28XZ...
The LRP 28 Spec 3 Truggy version and Losi 454 from an 8T2.0(the latter dirt cheap on ebay) are good messing-around engines if you're on a budget and just want to bash around the yard or park.. But for racing I'd go for the Jammin JPX 28 - maybe even the 21, and if you can afford it, either of the OS engines... The OS 25XZ, at least theoretically(don't have one or know really what kind of run-time they get..), is the ideal compromise between the big power of a 28, and the better run-time of a 21. If I had the budget, that's what I'd get...
Amain has probably 20-30 engines that you'd be thrilled with, circumstances depending, from 21-30...., from $150-$400. I say go look around, read the feedback, think about how seriously you want to get into racing, what your budget really is - including starterbox with batteries, then come ask again once you've found a few that peak your interest...
The Hyper is heavy, so a 28 is a legit option, also for racing.. (runtime is overrated for most casual club-racing IMO..) Yes you need a starterbox. I say Jammin 28, or if you can afford it, OS 25XZ or OS 28XZ...
The LRP 28 Spec 3 Truggy version and Losi 454 from an 8T2.0(the latter dirt cheap on ebay) are good messing-around engines if you're on a budget and just want to bash around the yard or park.. But for racing I'd go for the Jammin JPX 28 - maybe even the 21, and if you can afford it, either of the OS engines... The OS 25XZ, at least theoretically(don't have one or know really what kind of run-time they get..), is the ideal compromise between the big power of a 28, and the better run-time of a 21. If I had the budget, that's what I'd get...
Amain has probably 20-30 engines that you'd be thrilled with, circumstances depending, from 21-30...., from $150-$400. I say go look around, read the feedback, think about how seriously you want to get into racing, what your budget really is - including starterbox with batteries, then come ask again once you've found a few that peak your interest...
#12
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RE: New engine for OFNA truggy (need advise)
I have a Nosram 21RR, which is basically identical to the Jammin 21. Great engine.. But a Hyper ST RTR probably weighs at least a pound more than other truggies.. I agree - a good 21 can have a good bottom end, even for a heavy Hyper.., but it needs more attention to set up - good clutch, right pipe, etc.. With a 28 it's just easier to get the oomph.. Too much maybe(for racing..), but not not enough....
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
As for pit stops, all the races I've run at had either 5 or 7 minute qualifiers.. I.e. for those heats run-time meant nothing.. I mostly raced with a Mach 427 and the Nosram, and got 10 minutes with both no problem.. The only time run-time really made a difference was when a guy (RB S7) said most of the guys were going to pit three times for a 30-minute final, just to be safe.. I did just that, and ended up about 30 seconds behind that guy... After the race while we were looking at the printouts, he grinned and told me he'd pitted twice... (which I could have done too if I hadn't been a sucker and persuaded to be overly cautious..) Ah well, live and learn... Still, you have to be pretty into racing IMO to really care about run-time.. For most mortal racers (i.e. casual, once-a-month racers and part-time bashers.., which is what this guy sounds like..)I think it's overrated.. Not to mention all the variables - track, trigger-finger, set-up, driving skill, etc..
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
As for pit stops, all the races I've run at had either 5 or 7 minute qualifiers.. I.e. for those heats run-time meant nothing.. I mostly raced with a Mach 427 and the Nosram, and got 10 minutes with both no problem.. The only time run-time really made a difference was when a guy (RB S7) said most of the guys were going to pit three times for a 30-minute final, just to be safe.. I did just that, and ended up about 30 seconds behind that guy... After the race while we were looking at the printouts, he grinned and told me he'd pitted twice... (which I could have done too if I hadn't been a sucker and persuaded to be overly cautious..) Ah well, live and learn... Still, you have to be pretty into racing IMO to really care about run-time.. For most mortal racers (i.e. casual, once-a-month racers and part-time bashers.., which is what this guy sounds like..)I think it's overrated.. Not to mention all the variables - track, trigger-finger, set-up, driving skill, etc..
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RE: New engine for OFNA truggy (need advise)
Called OFNA, NitroHouse, and A-Main Hobbies... of course a different answer from each.
I think I'm starting to lean towards the Werks B5 or B6 (if I go .21) and get the OFNA blue starter box. Part of me still is saying that I need a little extra because the Hyper ST is a tank.
What I'm looking for:
1. quality
2. affordable
3. dependable (easy to tune and keep tuned)
4. product support
I race for fun... period. I want a motor that will race when I want to race and just bash in the backyard when the time calls for it. I appreciate everyone's input and suggestions. The OS is pretty expensive. Trying to keep the mill under $200 if possible.
#14
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RE: New engine for OFNA truggy (need advise)
Hyper ST is a tank...i ran mine with both .21 and 28...I much preferred the 28... especially so if you plan to do some bashing.... Out of all the Truggies I have run the Hyper ST was the hardest to push...A 28 is definitely not overkill in that chassis......A .21 will do the job of course, but your asking alot from it....
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RE: New engine for OFNA truggy (need advise)
Basically I need a Chevy small-block V8
Maybe I better go with a .28...? Whatever motor I do get will probably get dropped in a Mugen truggy by end of next season.
Maybe I better go with a .28...? Whatever motor I do get will probably get dropped in a Mugen truggy by end of next season.
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: HerrSavage
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
#17
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: jmaxey51
i had the Z and i loved it in my D8T and also ran it in my D8 but i had to go down a tooth on the CB to get the power i wanted. i got rid of the Z (regret it now LOL) and now im running the S in my Odonnell SG buggy and truggy, i love it, its a little easier to tune but im not getting the run time i was getting with my Z, i could get 9-11 min easy in buggy or truggy with the Z. i only can get 9.5 min in truggy and 8 min in buggy with the S now and it stinks because now some of the club races (around here) are running 10 min quals (which i like alot better). also tried the F850 and its ok but def wont work in any truggy unless you changed gearing. i love my Alphas, they are a pain to break in and weird on tune but once you figure it out they cant be beat! also if you get one run the 0801 pipe (do NOT run the 2081) and OS P3 glow plugs. i ran P4 plugs and they were def better and faster but the tuning window is SUPER small and if your not a great tuner, its not worth the headache. also these engines run between 280-300 for the first couple of gallons and now its running at 250-270 and sometimes its running at 230-250 (but rare). i stopped using a temp gun with these engines because people would freak out and mess with my tune because they thought it was too hot, this is the biggest mistake people do with these engines, i tell everyone that gets an Alpha, ''leave your temp gun at home and just tune by smoke and feel'' .... also if you get one and bottom feels weak/sluggish, richen it up, this is biggest mistake people make, the lean it out and richen the top and then they have no mid to top end power and think the engine is junk.
ORIGINAL: HerrSavage
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
How did you find the Alpha to stack up against the Jammin as far as performance ?
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: supertib
How did you find the Alpha to stack up against the Jammin as far as performance ?
ORIGINAL: jmaxey51
i had the Z and i loved it in my D8T and also ran it in my D8 but i had to go down a tooth on the CB to get the power i wanted. i got rid of the Z (regret it now LOL) and now im running the S in my Odonnell SG buggy and truggy, i love it, its a little easier to tune but im not getting the run time i was getting with my Z, i could get 9-11 min easy in buggy or truggy with the Z. i only can get 9.5 min in truggy and 8 min in buggy with the S now and it stinks because now some of the club races (around here) are running 10 min quals (which i like alot better). also tried the F850 and its ok but def wont work in any truggy unless you changed gearing. i love my Alphas, they are a pain to break in and weird on tune but once you figure it out they cant be beat! also if you get one run the 0801 pipe (do NOT run the 2081) and OS P3 glow plugs. i ran P4 plugs and they were def better and faster but the tuning window is SUPER small and if your not a great tuner, its not worth the headache. also these engines run between 280-300 for the first couple of gallons and now its running at 250-270 and sometimes its running at 230-250 (but rare). i stopped using a temp gun with these engines because people would freak out and mess with my tune because they thought it was too hot, this is the biggest mistake people do with these engines, i tell everyone that gets an Alpha, ''leave your temp gun at home and just tune by smoke and feel'' .... also if you get one and bottom feels weak/sluggish, richen it up, this is biggest mistake people make, the lean it out and richen the top and then they have no mid to top end power and think the engine is junk.
ORIGINAL: HerrSavage
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
How did you find the Alpha to stack up against the Jammin as far as performance ?
#19
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: jmaxey51
pretty close power wise but the Alphas have a little more power (not much) and the Alphas get a good bit better run time though. also i like the Alpha carbs just a little more. but they are very close in performance but i prefer Alphas, but i kept my Jammin as a back up LOL
ORIGINAL: supertib
How did you find the Alpha to stack up against the Jammin as far as performance ?
ORIGINAL: jmaxey51
i had the Z and i loved it in my D8T and also ran it in my D8 but i had to go down a tooth on the CB to get the power i wanted. i got rid of the Z (regret it now LOL) and now im running the S in my Odonnell SG buggy and truggy, i love it, its a little easier to tune but im not getting the run time i was getting with my Z, i could get 9-11 min easy in buggy or truggy with the Z. i only can get 9.5 min in truggy and 8 min in buggy with the S now and it stinks because now some of the club races (around here) are running 10 min quals (which i like alot better). also tried the F850 and its ok but def wont work in any truggy unless you changed gearing. i love my Alphas, they are a pain to break in and weird on tune but once you figure it out they cant be beat! also if you get one run the 0801 pipe (do NOT run the 2081) and OS P3 glow plugs. i ran P4 plugs and they were def better and faster but the tuning window is SUPER small and if your not a great tuner, its not worth the headache. also these engines run between 280-300 for the first couple of gallons and now its running at 250-270 and sometimes its running at 230-250 (but rare). i stopped using a temp gun with these engines because people would freak out and mess with my tune because they thought it was too hot, this is the biggest mistake people do with these engines, i tell everyone that gets an Alpha, ''leave your temp gun at home and just tune by smoke and feel'' .... also if you get one and bottom feels weak/sluggish, richen it up, this is biggest mistake people make, the lean it out and richen the top and then they have no mid to top end power and think the engine is junk.
ORIGINAL: HerrSavage
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
How did you find the Alpha to stack up against the Jammin as far as performance ?
is that a Jammin with a extra shim installed ?
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: supertib
is that a Jammin with a extra shim installed ?
ORIGINAL: jmaxey51
pretty close power wise but the Alphas have a little more power (not much) and the Alphas get a good bit better run time though. also i like the Alpha carbs just a little more. but they are very close in performance but i prefer Alphas, but i kept my Jammin as a back up LOL
ORIGINAL: supertib
How did you find the Alpha to stack up against the Jammin as far as performance ?
ORIGINAL: jmaxey51
i had the Z and i loved it in my D8T and also ran it in my D8 but i had to go down a tooth on the CB to get the power i wanted. i got rid of the Z (regret it now LOL) and now im running the S in my Odonnell SG buggy and truggy, i love it, its a little easier to tune but im not getting the run time i was getting with my Z, i could get 9-11 min easy in buggy or truggy with the Z. i only can get 9.5 min in truggy and 8 min in buggy with the S now and it stinks because now some of the club races (around here) are running 10 min quals (which i like alot better). also tried the F850 and its ok but def wont work in any truggy unless you changed gearing. i love my Alphas, they are a pain to break in and weird on tune but once you figure it out they cant be beat! also if you get one run the 0801 pipe (do NOT run the 2081) and OS P3 glow plugs. i ran P4 plugs and they were def better and faster but the tuning window is SUPER small and if your not a great tuner, its not worth the headache. also these engines run between 280-300 for the first couple of gallons and now its running at 250-270 and sometimes its running at 230-250 (but rare). i stopped using a temp gun with these engines because people would freak out and mess with my tune because they thought it was too hot, this is the biggest mistake people do with these engines, i tell everyone that gets an Alpha, ''leave your temp gun at home and just tune by smoke and feel'' .... also if you get one and bottom feels weak/sluggish, richen it up, this is biggest mistake people make, the lean it out and richen the top and then they have no mid to top end power and think the engine is junk.
ORIGINAL: HerrSavage
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
How did you find the Alpha to stack up against the Jammin as far as performance ?
is that a Jammin with a extra shim installed ?
Man dude !! Talk about beating a dead horse !!
#21
Senior Member
RE: New engine for OFNA truggy (need advise)
ORIGINAL: romax
Man dude !! Talk about beating a dead horse !!
ORIGINAL: supertib
is that a Jammin with a extra shim installed ?
ORIGINAL: jmaxey51
pretty close power wise but the Alphas have a little more power (not much) and the Alphas get a good bit better run time though. also i like the Alpha carbs just a little more. but they are very close in performance but i prefer Alphas, but i kept my Jammin as a back up LOL
ORIGINAL: supertib
How did you find the Alpha to stack up against the Jammin as far as performance ?
ORIGINAL: jmaxey51
i had the Z and i loved it in my D8T and also ran it in my D8 but i had to go down a tooth on the CB to get the power i wanted. i got rid of the Z (regret it now LOL) and now im running the S in my Odonnell SG buggy and truggy, i love it, its a little easier to tune but im not getting the run time i was getting with my Z, i could get 9-11 min easy in buggy or truggy with the Z. i only can get 9.5 min in truggy and 8 min in buggy with the S now and it stinks because now some of the club races (around here) are running 10 min quals (which i like alot better). also tried the F850 and its ok but def wont work in any truggy unless you changed gearing. i love my Alphas, they are a pain to break in and weird on tune but once you figure it out they cant be beat! also if you get one run the 0801 pipe (do NOT run the 2081) and OS P3 glow plugs. i ran P4 plugs and they were def better and faster but the tuning window is SUPER small and if your not a great tuner, its not worth the headache. also these engines run between 280-300 for the first couple of gallons and now its running at 250-270 and sometimes its running at 230-250 (but rare). i stopped using a temp gun with these engines because people would freak out and mess with my tune because they thought it was too hot, this is the biggest mistake people do with these engines, i tell everyone that gets an Alpha, ''leave your temp gun at home and just tune by smoke and feel'' .... also if you get one and bottom feels weak/sluggish, richen it up, this is biggest mistake people make, the lean it out and richen the top and then they have no mid to top end power and think the engine is junk.
ORIGINAL: HerrSavage
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
My next engine will probably be an Alhpa S852..., or their new 23.. What do you run them in, and how do you like them?
How did you find the Alpha to stack up against the Jammin as far as performance ?
is that a Jammin with a extra shim installed ?
Man dude !! Talk about beating a dead horse !!
????????
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: supertib
????????
ORIGINAL: romax
Man dude !! Talk about beating a dead horse !!
Man dude !! Talk about beating a dead horse !!
????????
#23
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: jmaxey51
romax is my dad, we know what we're doing when it comes to engines, are JPX would absolutely rock, we make our engines last, the JPX has over 8 gallons on it and its still running like day one. if you take a shim out in out climate it WILL blow, see it time and time again here. but are JPX was so ballistic with the stock shimming, so why take one out when we could barely keep it from just spinning?? thats all im going to say, we never had problems with any of our engines and we get our money worth out of any of the engines we've owned.
ORIGINAL: supertib
????????
ORIGINAL: romax
Man dude !! Talk about beating a dead horse !!
Man dude !! Talk about beating a dead horse !!
????????
I am trying to ask a legitimate question....... I remember you saying you added an extra shim above stock shimming on a JPX 21...... I am asking if you comparing power with that extra shim added to JPX.......Just curious how these Alpha's are is all, i have a customer sending me one and I am researching how it is stock from people who's information I can trust..... I will never agree with adding a extra shim to a JPX, but if that what works for you tha its fine with me..I have no issue with it......However running a JPX at .6 mm shimming will drastically reduce its power output...So what I am trying to determine is how the Alpha and JPX compare, and if your JPX has a shim added as that would reduce power....Not trying a pick a fight with either you or your father...Just asking your opinion on the engines, and the details on how you ran them...as that is pertinent information to me.....As I say run your JPX any way you wish, that is of no concern to me, and I hope I didn't come across meaning anything else... I am just curious how the engines compare and the details of how you ran them.........FYI I run the JPX on .4 mm head shim, 086 pipe on short header......that is the combo that makes the most power on the JPX..
Also to add, if your running a OD plug in the JPX it will not allow you to shim down, OD plugs are very hot and require more head clearance and a richer tune.... for us to run the tighter head clearance we run a cooler Picco plug.which raises power and gives better mileage........If we try to run the tighter head clearance with a OD plug the coils tend to break....
#24
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Join Date: Dec 2009
Location: statham, GA
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RE: New engine for OFNA truggy (need advise)
ORIGINAL: supertib
I am trying to ask a legitimate question....... I remember you saying you added an extra shim above stock shimming on a JPX 21...... I am asking if you comparing power with that extra shim added to JPX.......Just curious how these Alpha's are is all, i have a customer sending me one and I am researching how it is stock from people who's information I can trust..... I will never agree with adding a extra shim to a JPX, but if that what works for you tha its fine with me..I have no issue with it......However running a JPX at .6 mm shimming will drastically reduce its power output...So what I am trying to determine is how the Alpha and JPX compare, and if your JPX has a shim added as that would reduce power....Not trying a pick a fight with either you or your father...Just asking your opinion on the engines, and the details on how you ran them...as that is pertinent information to me.....As I say run your JPX any way you wish, that is of no concern to me, and I hope I didn't come across meaning anything else... I am just curious how the engines compare and the details of how you ran them.........FYI I run the JPX on .4 mm head shim, 086 pipe on short header......that is the combo that makes the most power on the JPX..
Also to add, if your running a OD plug in the JPX it will not allow you to shim down, OD plugs are very hot and require more head clearance and a richer tune.... for us to run the tighter head clearance we run a cooler Picco plug.which raises power and gives better mileage........If we try to run the tighter head clearance with a OD plug the coils tend to break....
ORIGINAL: jmaxey51
romax is my dad, we know what we're doing when it comes to engines, are JPX would absolutely rock, we make our engines last, the JPX has over 8 gallons on it and its still running like day one. if you take a shim out in out climate it WILL blow, see it time and time again here. but are JPX was so ballistic with the stock shimming, so why take one out when we could barely keep it from just spinning?? thats all im going to say, we never had problems with any of our engines and we get our money worth out of any of the engines we've owned.
ORIGINAL: supertib
????????
ORIGINAL: romax
Man dude !! Talk about beating a dead horse !!
Man dude !! Talk about beating a dead horse !!
????????
I am trying to ask a legitimate question....... I remember you saying you added an extra shim above stock shimming on a JPX 21...... I am asking if you comparing power with that extra shim added to JPX.......Just curious how these Alpha's are is all, i have a customer sending me one and I am researching how it is stock from people who's information I can trust..... I will never agree with adding a extra shim to a JPX, but if that what works for you tha its fine with me..I have no issue with it......However running a JPX at .6 mm shimming will drastically reduce its power output...So what I am trying to determine is how the Alpha and JPX compare, and if your JPX has a shim added as that would reduce power....Not trying a pick a fight with either you or your father...Just asking your opinion on the engines, and the details on how you ran them...as that is pertinent information to me.....As I say run your JPX any way you wish, that is of no concern to me, and I hope I didn't come across meaning anything else... I am just curious how the engines compare and the details of how you ran them.........FYI I run the JPX on .4 mm head shim, 086 pipe on short header......that is the combo that makes the most power on the JPX..
Also to add, if your running a OD plug in the JPX it will not allow you to shim down, OD plugs are very hot and require more head clearance and a richer tune.... for us to run the tighter head clearance we run a cooler Picco plug.which raises power and gives better mileage........If we try to run the tighter head clearance with a OD plug the coils tend to break....
with the green head Alpha in a buggy i had to go down a tooth on the CB and i ran 1.1 clutch spring (unless it was low traction) to get the bottom end power and also it gave it more top, mid to top is where that engine comes alive, its a good truggy engine, most people dont believe me.... the orange head just needs a tad bit more top in buggy but in truggy it needs nothing IMO if your running 1.1 springs. the red head needs a little power everywhere, it still screams but its to smooth for me. i know one thing these engines are tight just like the JPX and the Alphas take 2-3 gallons to break in and then they go crazy rich and then they come alive, they are a little weak in the mid range for the first 2 gallons. and know these run HOT, lutz runs his at 300-320 and he is getting over 8 gallons out of them. i like the P4 plug in them but the tuning window is VERY small but 99% of people running Alphas run the P3. also the high speed needle isnt the best, the o-rings are pretty much junk (unless they got the one with updated o-rings). ive seen tons of people break the high speed needle, including me, and also have tuning issues so i chunked mine and put a nova high speed needle on it and it WAY better tuning wise and plus the needle isnt so hard to turn, i recommend the nova high speed needle to everyone, its the only one that ive found that fit. and lastly on break in make sure its around 200 or it will make the rod get some play in it. i idled mine for 7 tanks at 190-210 and it was good to go. the WOT method the manual says is brutal, i know someone that did it and it didnt last two weekends. ive been running Alphas since early march.
#25
Senior Member
RE: New engine for OFNA truggy (need advise)
ORIGINAL: jmaxey51
i understand. i am running stock shimming on Alpha and the JPX , the Alpha is faster IMO, the JPX has a little more bottom over the green head Alpha but the orange head has more bottom than the jpx but the jpx has more top. now the red head alpha is a smoother (and a little slower) version of the JPX imo. OD plugs are cooler than picco or OS plugs i thought, or atleast they seem that way. the OD plugs are longer i know so we ran Picco (medium i believe) in the JPX until recently we switched to OS P4 (because piccos were out of stock everywhere) and we had to completely re-tune the engine, we went to factory setting and started over and IMO that made it run better, it made it a little bit smoother on bottom but it still had tons of power and we got more run time. i run the JP3 or RB 2045 (which actually is a good match, gained ALOT of runtime) with the JPX, the 053 kinda sucked on it IMO. and on Alpha engine i wont run anything other than the 0801 pipe, its a perfect match and getting over 10 min a tank (def with green head) and ive tried alot of different pipes just to see if anything else came close. all of my engines are stock BTW, we had mod engines and we didnt like them.
with the green head Alpha in a buggy i had to go down a tooth on the CB and i ran 1.1 clutch spring (unless it was low traction) to get the bottom end power and also it gave it more top, mid to top is where that engine comes alive, its a good truggy engine, most people dont believe me.... the orange head just needs a tad bit more top in buggy but in truggy it needs nothing IMO if your running 1.1 springs. the red head needs a little power everywhere, it still screams but its to smooth for me. i know one thing these engines are tight just like the JPX and the Alphas take 2-3 gallons to break in and then they go crazy rich and then they come alive, they are a little weak in the mid range for the first 2 gallons. and know these run HOT, lutz runs his at 300-320 and he is getting over 8 gallons out of them. i like the P4 plug in them but the tuning window is VERY small but 99% of people running Alphas run the P3. also the high speed needle isnt the best, the o-rings are pretty much junk (unless they got the one with updated o-rings). ive seen tons of people break the high speed needle, including me, and also have tuning issues so i chunked mine and put a nova high speed needle on it and it WAY better tuning wise and plus the needle isnt so hard to turn, i recommend the nova high speed needle to everyone, its the only one that ive found that fit. and lastly on break in make sure its around 200 or it will make the rod get some play in it. i idled mine for 7 tanks at 190-210 and it was good to go. the WOT method the manual says is brutal, i know someone that did it and it didnt last two weekends. ive been running Alphas since early march.
ORIGINAL: supertib
I am trying to ask a legitimate question....... I remember you saying you added an extra shim above stock shimming on a JPX 21...... I am asking if you comparing power with that extra shim added to JPX.......Just curious how these Alpha's are is all, i have a customer sending me one and I am researching how it is stock from people who's information I can trust..... I will never agree with adding a extra shim to a JPX, but if that what works for you tha its fine with me..I have no issue with it......However running a JPX at .6 mm shimming will drastically reduce its power output...So what I am trying to determine is how the Alpha and JPX compare, and if your JPX has a shim added as that would reduce power....Not trying a pick a fight with either you or your father...Just asking your opinion on the engines, and the details on how you ran them...as that is pertinent information to me.....As I say run your JPX any way you wish, that is of no concern to me, and I hope I didn't come across meaning anything else... I am just curious how the engines compare and the details of how you ran them.........FYI I run the JPX on .4 mm head shim, 086 pipe on short header......that is the combo that makes the most power on the JPX..
Also to add, if your running a OD plug in the JPX it will not allow you to shim down, OD plugs are very hot and require more head clearance and a richer tune.... for us to run the tighter head clearance we run a cooler Picco plug.which raises power and gives better mileage........If we try to run the tighter head clearance with a OD plug the coils tend to break....
ORIGINAL: jmaxey51
romax is my dad, we know what we're doing when it comes to engines, are JPX would absolutely rock, we make our engines last, the JPX has over 8 gallons on it and its still running like day one. if you take a shim out in out climate it WILL blow, see it time and time again here. but are JPX was so ballistic with the stock shimming, so why take one out when we could barely keep it from just spinning?? thats all im going to say, we never had problems with any of our engines and we get our money worth out of any of the engines we've owned.
ORIGINAL: supertib
????????
ORIGINAL: romax
Man dude !! Talk about beating a dead horse !!
Man dude !! Talk about beating a dead horse !!
????????
I am trying to ask a legitimate question....... I remember you saying you added an extra shim above stock shimming on a JPX 21...... I am asking if you comparing power with that extra shim added to JPX.......Just curious how these Alpha's are is all, i have a customer sending me one and I am researching how it is stock from people who's information I can trust..... I will never agree with adding a extra shim to a JPX, but if that what works for you tha its fine with me..I have no issue with it......However running a JPX at .6 mm shimming will drastically reduce its power output...So what I am trying to determine is how the Alpha and JPX compare, and if your JPX has a shim added as that would reduce power....Not trying a pick a fight with either you or your father...Just asking your opinion on the engines, and the details on how you ran them...as that is pertinent information to me.....As I say run your JPX any way you wish, that is of no concern to me, and I hope I didn't come across meaning anything else... I am just curious how the engines compare and the details of how you ran them.........FYI I run the JPX on .4 mm head shim, 086 pipe on short header......that is the combo that makes the most power on the JPX..
Also to add, if your running a OD plug in the JPX it will not allow you to shim down, OD plugs are very hot and require more head clearance and a richer tune.... for us to run the tighter head clearance we run a cooler Picco plug.which raises power and gives better mileage........If we try to run the tighter head clearance with a OD plug the coils tend to break....
with the green head Alpha in a buggy i had to go down a tooth on the CB and i ran 1.1 clutch spring (unless it was low traction) to get the bottom end power and also it gave it more top, mid to top is where that engine comes alive, its a good truggy engine, most people dont believe me.... the orange head just needs a tad bit more top in buggy but in truggy it needs nothing IMO if your running 1.1 springs. the red head needs a little power everywhere, it still screams but its to smooth for me. i know one thing these engines are tight just like the JPX and the Alphas take 2-3 gallons to break in and then they go crazy rich and then they come alive, they are a little weak in the mid range for the first 2 gallons. and know these run HOT, lutz runs his at 300-320 and he is getting over 8 gallons out of them. i like the P4 plug in them but the tuning window is VERY small but 99% of people running Alphas run the P3. also the high speed needle isnt the best, the o-rings are pretty much junk (unless they got the one with updated o-rings). ive seen tons of people break the high speed needle, including me, and also have tuning issues so i chunked mine and put a nova high speed needle on it and it WAY better tuning wise and plus the needle isnt so hard to turn, i recommend the nova high speed needle to everyone, its the only one that ive found that fit. and lastly on break in make sure its around 200 or it will make the rod get some play in it. i idled mine for 7 tanks at 190-210 and it was good to go. the WOT method the manual says is brutal, i know someone that did it and it didnt last two weekends. ive been running Alphas since early march.