Eganwp

My Feedback: (1)

Which engine would you guys recommend? I'd say I'm a moderate tuner and would like something that holds a descent tune and isn't fussy. Looking for reliability, longevity, and some big hp/torque for bashing. Looking to spend under $250 if possible. Dropping it into an ST-1 truggy. I know the Nova engines and some other Italian engines are slightly better, but their bang per buck can't be justified for my use. (Novarossi N528XR Hott Mod 2.02 @ 26,250 rpm 80.64 oz-in @ 22,000 rpm 38,500 rpm N528XR $319)

Specs:
LRP Z .28R Spec.3 Truggy 1.87 @ 27,200 rpm 70.77 oz-in @ 25,600 rpm 42,800 rpm
O.S. 30VG 1.80 @ 26,500 rpm 74.88 oz-in @ 18,750 rpm 35,500 rpm 13960 $250

Out of the others I considered:
Axial Racing .28 Spec I S 1.43 @ 22,800 rpm 75.61 oz-in @ 18,000 rpm 35,000 rpm AX001 $160
Racers Edge Sure Fire (same as Axial) .32 1.65 @ 21,750 rpm 74.80 oz-in @ 21,000 rpm 34,500 rpm RCESF10000 $200
SH 0.28 1.22 @ 20,500 rpm 61.40 oz-in @ 14,750 rpm 38,450 rpm w/ kit $150
Sportwerks 0.26 1.30 @ 26,750 rpm 53.76 oz-in @ 19,000 rpm 42,750 rpm w/ kit n/a
STS D30M 1.6 @ 25,000rpm 67.99 oz-in @35,000rpm 35,000rpm $130
Team Losi Mach 427 1.31 @ 26,750 rpm 53.80 oz-in @18,750 rpm 43,250 rpm w/ kit n/a
Trinity .30 Adam Drake 1.44 @ 21,750 rpm 55.68 oz-in @ 27,000 rpm 36,250 rpm TRI40006 $215
XTM XTM 24.7 1.27 @ 23,000 rpm 61.44 oz-in @ 16,750 rpm 37,250 rpm w/ kit $140


The HP & torque curves look very nice on the LRP and descent on the OS as well, as peak output is only a very small fraction of the puzzle. While driving home from work today I thought of quickly tossing each of the graphs into a math area calculator and calculate the area under the curves! IMO this should tell me best overall power. (Damn Comp Sci / Math degree comes in handy in the oddest places... lol) Or is there another engine you guys would buy??? I'm open to suggestions.

Cheers!
Eganwp

McFly505

OS .28XZ and be done with it.

The VG motors are known to have a very short lifespan.(ABN-sleeve is NOT chromed, just nickel plated).
I wouldn't waste my $$$ on a VG, and I like OS power.

The LRP .28 is a decent motor for the $$$, but don't expect it to be a rocket ship.


If all you are going to do is bash, then you will not likely notice the difference between a high dollar race motor and what you already have, other than maybe a little more top end.


I'm sure the Picco faithful will chime in shortly with their thoughts on the subject.



Scott

The Winner

the lrp 28 is better,more reliable and race legal! the os 30 is not race legal! i prefer the lrp!!!

HerrSavage

I'd get the LRP Spec 3 truggy and a starter-box if you can. LRP is coming out with some 30 engines, presumably to replace their 28 lineup, so maybe the 28's'll be going cheaper here in the near fyuthsch...

The Jammin 28 is by all accounts a massive powerhouse too - and less than $200 at amain I think.. Takes turbo plugs, and has massive pinch, so might cause a bit more stress through break-in, etc.. But prob more power and longer-lasting than the Spec 3..

For the best balance of big power, ease of use, and price, the LRP Spec 3 Truggy version is probably ideal for bashing... It's what I would get..

The Hedgehog

.28's are becoming a thing of the past for truggies. Try a .21 [8D]

HerrSavage

He said it's for bashing.

Echelon

Lrp, definately. If you say it's not a powerhouse, you're wrong. And it's less thirsty than a .30.
It revs high and has a some good torque. Just look at this vid, this shows the power of this engine:
http://www.youtube.com/watch?v=ZIHDy1TwjKs

Draxan

in my opinion no.1 - JPX .28

qaiz

+2.

bajaracer1501

Don't mean to hi-jack the thread but I'm in the same situation as Eganwp...I'm also looking for a new engine for my basher ST1. I've narrowed it down to the LRP Spec 3 & Jammin' JPX .28. I am leaning towards the JPX but wasn't sure if it can be used with my roto-starter? I don't want to lug around my starter box when I'm out bashing. THANKS

HerrSavage

The Jammin ist startbox only(and you better have a good one..)

Echelon

The LRP is also started by a starterbox..

HerrSavage

The truggy version, yeah. Not the pullstart one though..

Echelon

But if he was going to choose a LRP it was going to be the Truggy version, like you can read in his first post

HerrSavage

..

supertib

+3

bajaracer1501

So you guys don't think there is a backplate that can convert either the LRP or Jammin' into roto-start like I did with the stock TT pull-start engine? Or can I initially start with a pull-start engine and then convert that? Anyone have any experience with this[link=http://www.amainhobbies.com/product_info.php/cPath/1_23_79/products_id/25257]Novarossi Plus 28[/link] ? It's a little more than I want to spend for a basher, but I like the convenience of roto-start.

Eganwp

My Feedback: (1)

Thanks for your opinions/help guys. I appreciate people's informative input. BTW LRP = $179, JPX = $189, plus 10% discount at amain.

baja, after another nearly full day of research on engines, I too can't decide between the Jammin JPX .28 (same as Picco .28) or the LRP .28 Spec 3. I've read through a number of supertib's posts on other threads, but still undecided... I may end up racing with it next season too (prob only twice a month or so however). So it should be alright on fuel. From reading Supertib's posts as well as others, you still aren't really behind at all by running a .28 over a .21 (a LRP & Picco both get 9-11 mins race run time), thus can still pit the same as a .21 in a-main. .28 all the way! Anyways, racing isn't the priority really, 70% bashing, 30% racing I assume.

The JPX seems to have more power in bottom, mid and top end speed, and is more "snappy" on the throttle from what I've read and watched in vids. JPX is also slightly higher quality, and should last a bit longer if maintained. Can also be modded and hold up. Downside to JPX... is the carbs can be pretty crappy and sealing is a must (not a big deal on sealing though). They can be hard and picky to tune, plug, shim, etc etc compared to the LRP. They also require frequent retuning.

The LRP on the other hand has less power and punch all around, slightly less build quality, and less top speed. Where it shines however is the carb is supposed to be awesome, holds a tune, will run on a less than perfect tune easily, and isn't very picky about a pipe. For the majority of people, it seems like this is where they want to be.


So my dilemma atm... Well, do I want more punch or less headache? lol... Off the bat I'd say I'd take less power for hassle free bashing fun. BUT, I'm not sure the LRP is going to have the punch I'm looking for. Most vids, people aren't even pulling wheelies in MT's with the LRP setups, while the the JPX/Picco vids people can't even keep their front wheels on the ground! And that's in a Truggy! LOL I dunno if it's just tuning or popularity or what, but that's all I can conclude thus far.

I'll be running the TTR 2035 aftermarket pipe I run now, and would prefer to keep it to save $50 if possible. I don't think the JPX is gonna like this pipe, as most use short or even the small buggy pipes on this engine to make it shine all around. LRP shouldn't mind too much for more bottom end on long 2035 pipe. So as it stands atm, I'm leaning LRP for the reasons above, unless people can change my mind. Will I be happy with the LRP's power, or will I be wishing I grabbed the JPX???

RotoStart would be nice for both, however, I do have the OFNA starter box too, so doesn't matter a whole lot.

Sorry for the long post!
Eganwp

HerrSavage

Most truggies would be overpowered with the LRP - especially for racing.. A Savage is overpowered with an LRP IMO.. (bye-bye tranny..) You defo won't be disappointed with the power.

I reaaaaaalllllyyyy don't want this to become an argument, and hope it can stay good-natured , but put the LRP and Jammin in identical single-speed truggies, and you're not gonna see that huge a difference in most conditions..(on a track you'd just be spinning the tires with both the whole time..) The LRP is a power-house no doubt about it. The Jammin might have it by a bit, but not by much.

I had an LRP Spec 3 in my 10-lb+ Muggy, and was running down (and over..) some buggies on the track.. I was recently at a local park too, testing another engine in my Savage, and this truggy came around the corner going mentally fast. I was like "*** is that??" Turns out it was a dude with some used ST-1 with big ugly MT tires/wheels, and an LRP Spec 3 rotostart version with an STS big-block pipe. I'm not kidding - it was the fastest RC I've seen on the street(OK not including high-end race rigs at races..) We then went onto a nearby field, and he was showing off(it was impressive..), and SMACK!!!! he totalled it against a stone garbage can.. 'Multiple truck-chunks flying in different directions.. Worst wreck I've ever seen. Actually though, he only broke a hingepin I think, and bent the chassis just a little. Also proved how tough the ST-1 can be.. But no kidding - that thing was a rocket.. Was wheelying at will(don't know if he'd locked the center diff or anything..) Would eventch like to have that STS pipe for my LRP... Unfortunately I was in the process of getting the camera out of my pocket when I saw 20m before the garbage can what was gonna' happen.. [:@]

Anyway, you must've been looking at the wrong vids of LRP's....

http://de.youtube.com/watch?v=2WHhXReyWf8

http://de.youtube.com/watch?v=xXeHbZw-pyc (black ST-1 with Spec 3 at the beginning..)

http://de.youtube.com/watch?v=vn8bhtVaPPA

And check out this one with a 2-speed.. [X(]:

http://de.youtube.com/watch?v=NRcydE...eature=channel

Eganwp

My Feedback: (1)

Holy crap! The torque in that first video is just outrageous! ahah. Thx for posting those vids! Although now you made my decision between the two even worse, lol. I was almost set on the JPX. Either way, either of the two will just be awesome.

Can anyone chime in on best pipe to use on the LRP & JPX? Or which engine will like my 2035 pipe better for the time being? Also, is there a roto-start backplate that would work on eitehr of these? Anyone got X-dyno data for the JPX/Picco?

Thx!

Draxan

I think JP3 is the best for both of them.

The Hedgehog

Either one you go with will be great, don't worry about making the right desicion. Maybe just buy the cheaper one?

The Winner

for my st-rr i will go with lrp ! in my kyosho monster truck i have the lrp pullsart. my first lrp burn about 40 liters of 25% fuel with no change in bearings,con rod,piston, the tune is easy, it hold idle for a tank!!! looong idle... then i buy again lrp pullstarrt for the monster and now i will buy the lrp truggy for my kyosho st-rr truggy. with the pullstart engine with TSAIS T32 pipe, lrp glow plug #6 and byrone 2500 gen2 with rich settings one tank of 150cc about 8 and some more minutes.....!

supertib

my vote is for the JPX...more torque, more top end and longer life ....

squeeguk

LRP is awesome. My mate had the pull start one in his Hyper ST and had to take it out, it was just a handful on the track. Even after turning the EPA down, he would still get stupid pull and wheelspin out the corners. I am led to believe the truggy version is even better as it has a different piston sleeve and carb. It also revs higher!!

It starts first time and stays tuned, no need to keep chasing the tune. It's also cheap for a good 28. I would say the OS 28 XZ, but then it does cost a lot more.