losi 42cc big block xxl
08-27-2011, 07:01 PM
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losi 42cc big block xxl
the ultamate losi big block monster....lol
i found this truck at my local rc track in sarasota fl and snaged it i made it into and still working on it a 42cc chainsaw motor.
the truck is so huge that the engine just sliped right in no lie,as if it was made for it.i made several brackets for it so it sits flat and will most likley use the 2 speed that it came with.not sure if any one has done this but i would like to get any info on this to see what u guys think.
in ur face ass kicking...lol
i found this truck at my local rc track in sarasota fl and snaged it i made it into and still working on it a 42cc chainsaw motor.
the truck is so huge that the engine just sliped right in no lie,as if it was made for it.i made several brackets for it so it sits flat and will most likley use the 2 speed that it came with.not sure if any one has done this but i would like to get any info on this to see what u guys think.
in ur face ass kicking...lol
08-27-2011, 07:30 PM
#2
RE: losi 42cc big block xxl
ORIGINAL: art2010
the ultamate losi big block monster....lol
i found this truck at my local rc track in sarasota fl and snaged it i made it into and still working on it a 42cc chainsaw motor.
the truck is so huge that the engine just sliped right in no lie,as if it was made for it.i made several brackets for it so it sits flat and will most likley use the 2 speed that it came with.not sure if any one has done this but i would like to get any info on this to see what u guys think.[img][/img]in ur face ass kicking...lol
the ultamate losi big block monster....lol
i found this truck at my local rc track in sarasota fl and snaged it i made it into and still working on it a 42cc chainsaw motor.
the truck is so huge that the engine just sliped right in no lie,as if it was made for it.i made several brackets for it so it sits flat and will most likley use the 2 speed that it came with.not sure if any one has done this but i would like to get any info on this to see what u guys think.[img][/img]in ur face ass kicking...lol
The gear ratio will need to be changed. That chainsaw engine turns less than 1/3 the RPM the .28 that originally came in it did. Unless you mod the snot out of it, that engine will be lucky to see 9,000rpm vs. 32,000rpm.
08-27-2011, 07:33 PM
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RE: losi 42cc big block xxl
what i did the engine spins the same way as the tranny so i used the nitro cluch bell to keep the rpms up on the gears hopefully it works
08-27-2011, 11:42 PM
#4
RE: losi 42cc big block xxl
ORIGINAL: art2010
what i did the engine spins the same way as the tranny so i used the nitro cluch bell to keep the rpms up on the gears hopefully it works
what i did the engine spins the same way as the tranny so i used the nitro cluch bell to keep the rpms up on the gears hopefully it works
08-28-2011, 07:43 AM
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RE: losi 42cc big block xxl
the cluch bell on the engine has a gear that gear spins the nitro cluch bell and that turns the main gear of the tranny so i beleve it will work let say the engine turns 5-6000 rpms then from gearing the nitro cluch bell spins faster and then turns the tranny so hopefully it works
08-28-2011, 07:53 AM
#6
RE: losi 42cc big block xxl
ORIGINAL: art2010
the cluch bell on the engine has a gear that gear spins the nitro cluch bell and that turns the main gear of the tranny so i beleve it will work let say the engine turns 5-6000 rpms then from gearing the nitro cluch bell spins faster and then turns the tranny so hopefully it works
the cluch bell on the engine has a gear that gear spins the nitro cluch bell and that turns the main gear of the tranny so i beleve it will work let say the engine turns 5-6000 rpms then from gearing the nitro cluch bell spins faster and then turns the tranny so hopefully it works
I dont think the drivetrain is going to hold up for very long with that amount of power. I'll go out on a limb and estimate that 42cc chainsaw engine to put out a real-world 2-3hp, whereas the stock .28 glow engine probably put out 1.5hp and that might even be a tad optimistic. Also, the torque from the chainsaw engine will probably be in the 1-3 foot pounds whereas the glow engine is probably 150-175 inch pounds so I'd be leary of the stock drivetrain holding up.
I'd still like to see some bigger pictures, mainly to see how you have the engine mounted and the gear setup. Definitely a "thinking outside the box" idea, for sure.
08-28-2011, 09:59 AM
#8
RE: losi 42cc big block xxl
ORIGINAL: art2010
well thanks i cant figure out how to post other pics driving me nuts im not a pc person sry
well thanks i cant figure out how to post other pics driving me nuts im not a pc person sry
There should be help functions on photobucket's site also to aid in getting your album started.
08-28-2011, 10:51 AM
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RE: losi 42cc big block xxl
ORIGINAL: 1QwkSport2.5r
Well, regardless of how its geared (it sounds like you have it set up so it should work), you just need to make sure that your rpm is turning fast enough at the spur gear to get the 2spd clutch to engage so it shifts.
I dont think the drivetrain is going to hold up for very long with that amount of power. I'll go out on a limb and estimate that 42cc chainsaw engine to put out a real-world 2-3hp, whereas the stock .28 glow engine probably put out 1.5hp and that might even be a tad optimistic. Also, the torque from the chainsaw engine will probably be in the 1-3 foot pounds whereas the glow engine is probably 150-175 inch pounds so I'd be leary of the stock drivetrain holding up.
I'd still like to see some bigger pictures, mainly to see how you have the engine mounted and the gear setup. Definitely a ''thinking outside the box'' idea, for sure.
ORIGINAL: art2010
the cluch bell on the engine has a gear that gear spins the nitro cluch bell and that turns the main gear of the tranny so i beleve it will work let say the engine turns 5-6000 rpms then from gearing the nitro cluch bell spins faster and then turns the tranny so hopefully it works
the cluch bell on the engine has a gear that gear spins the nitro cluch bell and that turns the main gear of the tranny so i beleve it will work let say the engine turns 5-6000 rpms then from gearing the nitro cluch bell spins faster and then turns the tranny so hopefully it works
I dont think the drivetrain is going to hold up for very long with that amount of power. I'll go out on a limb and estimate that 42cc chainsaw engine to put out a real-world 2-3hp, whereas the stock .28 glow engine probably put out 1.5hp and that might even be a tad optimistic. Also, the torque from the chainsaw engine will probably be in the 1-3 foot pounds whereas the glow engine is probably 150-175 inch pounds so I'd be leary of the stock drivetrain holding up.
I'd still like to see some bigger pictures, mainly to see how you have the engine mounted and the gear setup. Definitely a ''thinking outside the box'' idea, for sure.
08-28-2011, 12:36 PM
#10
RE: losi 42cc big block xxl
ORIGINAL: BigTb17
Sorry, I just had to comment on the part above with regards to foot Lbs. and inch Lbs. 150-175 inch Lbs would be 12.5 -14.58 Ft. Lbs. Assuming that peak torque (150 inch Lbs.) came at 20,000 RPM on the nitro motor, that would be 47 HP. Probably more like 5 or 6 inch Lbs for the nitro engine, if I had to guess.
ORIGINAL: 1QwkSport2.5r
Well, regardless of how its geared (it sounds like you have it set up so it should work), you just need to make sure that your rpm is turning fast enough at the spur gear to get the 2spd clutch to engage so it shifts.
I dont think the drivetrain is going to hold up for very long with that amount of power. I'll go out on a limb and estimate that 42cc chainsaw engine to put out a real-world 2-3hp, whereas the stock .28 glow engine probably put out 1.5hp and that might even be a tad optimistic. Also, the torque from the chainsaw engine will probably be in the 1-3 foot pounds whereas the glow engine is probably 150-175 inch pounds so I'd be leary of the stock drivetrain holding up.
I'd still like to see some bigger pictures, mainly to see how you have the engine mounted and the gear setup. Definitely a ''thinking outside the box'' idea, for sure.
ORIGINAL: art2010
the cluch bell on the engine has a gear that gear spins the nitro cluch bell and that turns the main gear of the tranny so i beleve it will work let say the engine turns 5-6000 rpms then from gearing the nitro cluch bell spins faster and then turns the tranny so hopefully it works
the cluch bell on the engine has a gear that gear spins the nitro cluch bell and that turns the main gear of the tranny so i beleve it will work let say the engine turns 5-6000 rpms then from gearing the nitro cluch bell spins faster and then turns the tranny so hopefully it works
I dont think the drivetrain is going to hold up for very long with that amount of power. I'll go out on a limb and estimate that 42cc chainsaw engine to put out a real-world 2-3hp, whereas the stock .28 glow engine probably put out 1.5hp and that might even be a tad optimistic. Also, the torque from the chainsaw engine will probably be in the 1-3 foot pounds whereas the glow engine is probably 150-175 inch pounds so I'd be leary of the stock drivetrain holding up.
I'd still like to see some bigger pictures, mainly to see how you have the engine mounted and the gear setup. Definitely a ''thinking outside the box'' idea, for sure.
08-29-2011, 09:39 AM
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RE: losi 42cc big block xxl
^Yeah, I wasn't saying your point was wrong. If anything, your point about the drivetrain not holding up is even more so considering the numbers were lower than those you first threw out there.
Converting foot pounts to inch pounts is as simple as dividing inch pounts by 12 to get foot pounts, and multiplying foot pounts by 12 to get inch pounts. I.E., 12 inch Lbs. is 1 foot Lb. 48 inch pounds = 4 Ft. Lbs., etc.
HP = (Ft. Lb. Torque X RPM)/5252. So, if the engine makes 2.0 HP at 30,000 RPM for example, that works out to approximately 4.2 inch pounds of torque at 30,000 RPM. 4.2 inch lbs is 0.35 Ft. Lbs. So 0.35x30,000/5252=1.999 HP
Sorry, this really doesn't have anything important to do with this thread. I'm done, haha.
Converting foot pounts to inch pounts is as simple as dividing inch pounts by 12 to get foot pounts, and multiplying foot pounts by 12 to get inch pounts. I.E., 12 inch Lbs. is 1 foot Lb. 48 inch pounds = 4 Ft. Lbs., etc.
HP = (Ft. Lb. Torque X RPM)/5252. So, if the engine makes 2.0 HP at 30,000 RPM for example, that works out to approximately 4.2 inch pounds of torque at 30,000 RPM. 4.2 inch lbs is 0.35 Ft. Lbs. So 0.35x30,000/5252=1.999 HP
Sorry, this really doesn't have anything important to do with this thread. I'm done, haha.
08-29-2011, 04:57 PM
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RE: losi 42cc big block xxl
Honestly, the drivetrain should hold up fairly well. The reason i say that is because there was about a 20 page thread on here about converting t-maxx's to weedeater engines and several guys did it with decent success. The T-Maxx is smaller and harder to get the engine to sit on, and the driveline in the losi is probably 3x as strong so it should hold up reasonably well. Those guys were saying to just let the 2 speed shift VERY early so that the engine didnt get a lot of rpm before it caught 2nd gear that way there wasnt any real shock. Having the truck shift to 2nd as soon as it started moving would probably be ideal really. It should have enough torque to not be a problem.
09-04-2011, 06:13 AM
#13
RE: losi 42cc big block xxl
ORIGINAL: cummins driver
Honestly, the drivetrain should hold up fairly well. The reason i say that is because there was about a 20 page thread on here about converting t-maxx's to weedeater engines and several guys did it with decent success. The T-Maxx is smaller and harder to get the engine to sit on, and the driveline in the losi is probably 3x as strong so it should hold up reasonably well. Those guys were saying to just let the 2 speed shift VERY early so that the engine didnt get a lot of rpm before it caught 2nd gear that way there wasnt any real shock. Having the truck shift to 2nd as soon as it started moving would probably be ideal really. It should have enough torque to not be a problem.
Honestly, the drivetrain should hold up fairly well. The reason i say that is because there was about a 20 page thread on here about converting t-maxx's to weedeater engines and several guys did it with decent success. The T-Maxx is smaller and harder to get the engine to sit on, and the driveline in the losi is probably 3x as strong so it should hold up reasonably well. Those guys were saying to just let the 2 speed shift VERY early so that the engine didnt get a lot of rpm before it caught 2nd gear that way there wasnt any real shock. Having the truck shift to 2nd as soon as it started moving would probably be ideal really. It should have enough torque to not be a problem.
09-04-2011, 06:35 AM
#14
RE: losi 42cc big block xxl
ORIGINAL: BigTb17
^Yeah, I wasn't saying your point was wrong. If anything, your point about the drivetrain not holding up is even more so considering the numbers were lower than those you first threw out there.
Converting foot pounts to inch pounts is as simple as dividing inch pounts by 12 to get foot pounts, and multiplying foot pounts by 12 to get inch pounts. I.E., 12 inch Lbs. is 1 foot Lb. 48 inch pounds = 4 Ft. Lbs., etc.
HP = (Ft. Lb. Torque X RPM)/5252. So, if the engine makes 2.0 HP at 30,000 RPM for example, that works out to approximately 4.2 inch pounds of torque at 30,000 RPM. 4.2 inch lbs is 0.35 Ft. Lbs. So 0.35x30,000/5252=1.999 HP
Sorry, this really doesn't have anything important to do with this thread. I'm done, haha.
^Yeah, I wasn't saying your point was wrong. If anything, your point about the drivetrain not holding up is even more so considering the numbers were lower than those you first threw out there.
Converting foot pounts to inch pounts is as simple as dividing inch pounts by 12 to get foot pounts, and multiplying foot pounts by 12 to get inch pounts. I.E., 12 inch Lbs. is 1 foot Lb. 48 inch pounds = 4 Ft. Lbs., etc.
HP = (Ft. Lb. Torque X RPM)/5252. So, if the engine makes 2.0 HP at 30,000 RPM for example, that works out to approximately 4.2 inch pounds of torque at 30,000 RPM. 4.2 inch lbs is 0.35 Ft. Lbs. So 0.35x30,000/5252=1.999 HP
Sorry, this really doesn't have anything important to do with this thread. I'm done, haha.
http://www.chitownrc.com/engine-driv...o-results.html
I know these results may be skewed somewhat, but there is some consistency to the "typical" RTR sport engines. An SH .28 (unknown model) turned 1.22hp at 20,500rpm and 61.40 ounce inches (5.11 ft. lb.) of torque at 14,750rpm.
I couldnt find this table as this is what I was looking for when I tossed those really high numbers out there. I stand better corrected as far as numbers go. I will revise my original thought on torque of the glow engine vs. the torque of the gas engine. The torque may very well be similar between glow and gas in this scenario, however the gas engine will rev much much lower.
I was wrong, thanks for straightening me out.
