4stroke on 1/10 or 1/8th truck or car
 

i really wanna do this..but what all would i need for it? i just love the sound of them..it doesnt have to be real fast..just fun

RE: 4stroke on 1/10 or 1/8th truck or car
 

You wont get a 4 stroke on a 1/10 unless its a plane engine.

RE: 4stroke on 1/10 or 1/8th truck or car
 

i ment somthing like this http://cgi.ebay.com/Saito-FA-50-50-8...QQcmdZViewItem

RE: 4stroke on 1/10 or 1/8th truck or car
 

Thats still a huge engine for a 1/10 scale.

RE: 4stroke on 1/10 or 1/8th truck or car
 

true...i guess it would just be to hard to do. :(

RE: 4stroke on 1/10 or 1/8th truck or car
 

what car? as long as the car you are putting it in can be used on a starter box, then you can start it.

(e-mail me, I might be able to help you some more)

RE: 4stroke on 1/10 or 1/8th truck or car
 

sent u an email

RE: 4stroke on 1/10 or 1/8th truck or car
 

didn't get, so I sent you one.

RE: 4stroke on 1/10 or 1/8th truck or car
 

They used to make small 4-stroke engine's specificallly for 1/10 sized cars and trucks. It was a while back maybe 4 or 5 years ago, cant remember who made them though. But they did make them cause I was considering doing the same with my T-Maxx. But one hting you got to remember a 4 stroke thats the size of .30 will have the performace of a .15 sized 2 stroke. Thats the only down side to them , the performance for there size really lags behind that of a 2 stroke.

RE: 4stroke on 1/10 or 1/8th truck or car
 

This is the only 4 stroke I know of designed for cars.
[link=http://www.osengines.com/engines/osmg2091.html]OS FS-26C[/link]

RE: 4stroke on 1/10 or 1/8th truck or car
 

Experience of installation of the four-cycle motor
[link=http://www.truggyracers.com/forum/index.php?s=a70c83413929467e342b3a06611583a0&showt opic=8563&st=0]Ttr Eb-4 Conversion, ...with a twist[/link]

RE: 4stroke on 1/10 or 1/8th truck or car
 

I've seen that, and a video, that thing is slow and under powered. a 70-91 4-stroke is what a truggy needs.

RE: 4stroke on 1/10 or 1/8th truck or car
 

I do not know - 70-91 - it seems to me much.
Small speed of machine is pleasant to me - I used Magnum 0.30fsr, but I asked my friend for help in manufacturing some details
[link=http://www.youtube.com/watch?v=a06De1GmxwQ]test drive[/link]

RE: 4stroke on 1/10 or 1/8th truck or car
 

then again I'm running a truggy not a mt. and for a truggy a 70 is almost too small.

RE: 4stroke on 1/10 or 1/8th truck or car
 

:-) What engine you want to be use ?

RE: 4stroke on 1/10 or 1/8th truck or car
 

I'm running a OS 70 in my CRT, but for a maxx a 50 or 56 where can you find stiffer springs for a 4-stroke engine, I probably will wont to change the ones in my OS 70

RE: 4stroke on 1/10 or 1/8th truck or car
 

What You change in the shoe clutch and a gear box?
You have revers on T-Max ?
My gear box is not normally work for forward and back speed with four stroke engine - the rpm is very small

RE: 4stroke on 1/10 or 1/8th truck or car
 

the CRT is a truggy, no gear box, the gear is attached directly to the shafts.

RE: 4stroke on 1/10 or 1/8th truck or car
 

I want to put a 4 stroke in my t-maxx is that even possible?

RE: 4stroke on 1/10 or 1/8th truck or car
 

Yeah a while ago I talking several years ago there was a guy that I had seen put a 4 stroke engine on a t-maxx. I have seen t-maxx's with as much as 3 2 stroke engine's on. But dont know how well that really worked and kinda seemed pointless to me, but yes you can do it.

But remember for a 4 stroke you will need about twice the size of a 2 stroke to get the same performance out of it. I.E a .30 sized 4 stroke will have about the same power as a .15 sized 2 stroke. The .30 will have way more torque but less overall HP then a 2 stroke, and you will have to gear it so high because the 4 strokes dont come close to reving as high as a 2 stroke does.

RE: 4stroke on 1/10 or 1/8th truck or car
 

with current 4 stroke engines, you will struggle to get a good enough power to weight ratio to get good performance, however if enough time was put into developing a good 4 stroke, you will have a very good engine, a great example is dirtbikes, which were, up until ten years ago an all two stroke affair, until the yamaha YZF400 was introduced, not as ft as the two stroke of the time, but it got peoples attention, fast forward to today, and 450cc 4 stroke are absolutely dominating the 250CC class so badly there aren't any competitive 250 two stroke in it anymore, and so starting in 2010, it will be 350cc 4 stroke to 250cc two strokes, it isn't a case of 4 stroke need to be twice the size to make the power, thats far from true.

IF the development is put into making an overhead cam, 4 valve big bore (as in large bore to a short stroke) 4 stroke, which uses a self contained lubrication system to remove all oil from the fuel, it will be a case of .40 4 stroke competing with .21 and .28 two stroke engines.

for amusement, heres a pic of a revo with an O.S .52 (not a .90, silly me[sm=bananahead.gif]) 4 stroke in it, which is actually competitive with the two strokes.

RE: 4stroke on 1/10 or 1/8th truck or car
 

ttoks, thats a 52 not a 90, I've seen close ups of that revo. and I've seen the thread where the guy himself build it and said it was a 52

RE: 4stroke on 1/10 or 1/8th truck or car
 

meh how was i supposed to know, i'm not a plane guy and it was titled a .90 where i got the pic from (obviously not the guy who built it...), yay it's a .52... i wasn't not trying to start no arguments... i even edited my post for you [:-]

RE: 4stroke on 1/10 or 1/8th truck or car
 

Actually it's not really, in that case with the dirt bikes. The riders are rarely if ever at full throttle except on the short straight's leading up to a jump or on the starts. There off and on the throttle, where a 4 stroke excells over a 2 stroke. Remember 4 strokes have a ton of torque over a 2 stroke. 2 strokes love to go wideopen and stay up high with there rpm's as thats where they make there power. So this type or racing is better suited towards a 4 stroke then a 2 stroke really. Remember that a 4 stroke excells with on and off the throttle responce since it has way mor torque, if you have them both go wide open and stay that way a 2 stroke will prevail.


We race micro midgets(same thing as a sprint car just in a smaller scale) and we have a 125cc(actually allowed up to 136cc cause we are allowed to either bore them or stroke them) class, 250cc 4 stroke class 250cc 2 stroke class(both allowed up to 270cc), 600cc class(allowed up to 636cc's but has to have a stock stroke) and a 1000cc class. Now we have 2 local track's one of which allows the 125cc cars to run with the 250cc 4 strokes. Most of the time(since it's wide open throttle on a 1/4 mile track) the 125cc 2 stroke wins. Once this year did a 4 stroke win and he ad 7 grand into his motor, 4 of it just being in the head. As of recent they have allowed 450cc engine's to run with the 250cc engine's and the 450cc drivers just keept on getting there butts kicked. They would easily have them on the starts but couldnt touch them with there top end.

Getting back to the 250's they have titanium valves 3 or 4 valves per cylinder and are as good as your going to get right now. And the 125's basically kicked there butt's every time except once. And it was more due to the driver, the driver is awesome in anything that he gets in and if he would have been in his 125 that night he would have one. Ohh yeah and up until the zx6r 636 came out the 250cc 2 strokes where actually just as fast and in some cases faster then that of a 600's.

It more or less really depends on where your at, but for racing with our rc's it's going to take much more then twice the size to make the power of a 2 stroke. Not unless they have made 4 valves per cylinder titanium valves dual rate valve spring's, have the valves polished along with having the valve bowls blended along with much much more. The 4 stroke technology of Rc's is basically decades behind that of there larger brethern that are in dirt bikes and four wheelers.

I'm not trying to start an argument here just stating that in a lot of cases a 4 stroke need's to be at least twice a larger as a 2 stroke need's to be. Now there are certain instance's where that is not true again I.E motorcross, and arena cross where they are constantly off and back on the throttle. Plus to make a 4 stroke that fast they need to be rebuild a lot more then a 2 stroke does, there 4 strokes need to be rebuild every 2 races where as a 2 stroke can go as many as 6 or more races before needing to be rebuilt.

RE: 4stroke on 1/10 or 1/8th truck or car
 

I just didn't want other people to think it was a 90 when its not.