Hi everyone, here are some of the pics of my 1/8th scale buggy that I am in the process of converting from nitro to gas. I will post some info on it later when I have more time.














this is what it will look like when its done:

its hard enough to fit it in a 1/5th scale, why you trying to put it in a 1/8 scale? money is wisely spent elsewhere. that engine is just not made for that small scale, but fun to try. good luck!

Keep up the good work. Post some video. You're killing me. I want to see that bad boy run.

okay, here are the details:

The whole thing has taken me about 2 days to build this far, all I have to do now is attach the fuel tank, reciever, battery, rollcage and servos.
The chassis Is made from 4mm thick aluminium which has all the holes going into it countersunk. The chassis has only been lengthened by 1cm because I still wanted it to look the same as a normal buggy.
The engine is a 22cc echo hedgetrimmer engine that produces 1hp, although the power will not be staying that low for long
The drive ratio is about 6.25:1 - a six tooth sprocket on the clutch and an 11 tooth on the differential input shaft.
The brake will be made from a thick strap of rubber that wraps around the clutch bell and is pulled by a hi-torque metal geared servo (I know this Idea sounds a bit weak but I'm pretty sure it should work).
The fuel tank will be the same one from the buggy - probley about 200ml
The steering will be done by a 'Multiplex MC/V2 Jumbo Speed' metal geared digital servo.
The total weight with all the componets will be roughly 5.5 kilograms (about 12 Lbs I think)

Once everythin is done I will be pulling it all apart again and polishing up all the metal
Do you guys think that the multiplex servo that I am using will be sufficient enough for the steering?

thanks, Sam.

It is not such a waste.... I converted a t-maxx a few years ago and it did very well. I did it simply for the fun and experience of building, which is an aspect of the hobby that is being lost with everything being RTR these days.

That is bad asss. I would love to see a video of that in action. Talk about smoking the tires.
Keep up the great work and dont let other peoples negativity bring you down.

hey sam123, i have a question.where did you get the sprockets for your car?????because i need some for my 1/4 scale car that i have been building,and i need them as soon as possible.here are some pics of my very own car and some drawing i have done for the chassis and some pics of the motor.enjoy[&:]

Nifty job there...keep us informed on the progress.

Just wondering whyy would you do all that work only to put in an engine like that? or are you just using that to mock up the mounts before you buy the real engine?

which one of us are you talkin too???me or sam123????

Well, you can get these sized sprockets from a number of locations: pocket bikes, the valve timing mechanisms on 4-stroke motorbikes, electric scooters and photo copiers. Those little rc motorbikes also use the same types of sprockets.

On my car the sprocket on the engine is from the clutch of a pocket bike engine and the other sprocket (the eleven tooth one) is from an electric scooter.

RS43EVOman- what do you mean by a 'real' engine?, a zenoah G230RC? - to tell you the truth I am only 16 and I do not have enough cash to afford an engine like the ones you guys use. If I could afford one then I would buy one, but I have to make use of what I already have. Plus, this engine only cost me $10

oh thats cool man thanks,and if you want me too i will build you a cool chassis to go around everything you have on that car,i am 14 also a younger age.

i like how its the younger kids that are making these crazy things. you guys rock!!!

i thought about doing that myself but my motor spins clockwise... so pocketbike clutch bells are out... i cant find anything that would match up...[:@]

savage, convert the clutch to spin clockwise.and thanks for the compliment on the crazy build and yes they are super crazy but its worth it.

you know if you stuck a wicked ***** exaust on that for some real bottom end power you wouldnt be able to controll it
BTW love the idea of a huge engine in a small car. Good Luck!!

I love it! A guy at our lhs is doing something similar. I will take a pic of it and show ya's. Good job so far fella's. It is nice to see someone taking it back in time (back when we build our own). Not too many pioneers out there anymore.

Keep up the great work Sam. You are doing a great job with the materials and equipment you have!!

Thanks alot everyone. The last few days I have been working very hard, trying to get this thing finished so I can use it on the weekend. The throttle, which seems fairly simple to make, actually took me a WHOLE DAY to get working. It has definately been the hardest part of the project. The steering, on the other hand, has not been hard to make at all. All I had to do was mount the servo upside down and rig everything up.
At the moment, all I have to do is just make the exhaust, breaks, mount the fuel tank and make the rollcage (but that can wait a while)

By the way, do you think I should use monster truck wheels or just the standard buggy wheels?

Updates!!!!!!!













Tell me what you think.

go with the monster truck tires it would look cooler and the engine could eaisly handle them plus you could possibly pull a few wheelies also be carefull because if the front or rear monster tires balloon out enough they look like they might clip the chassis[&:]
I love where this car is going looks great!!! what body will you be using??
BTW when you get it running you HAVE to post some vids.

Yeh the monster truck tires looks alot better, your doin a great job, keep up the good work!!!!!

okay, how do i stop the threaded screw from backing out when i hit the gas? i could try a set screw in the bell threads but i dont have anything to drill hardened steel...maybe i could just run my motor backwards?

The easiest thing to do would just be to get a different engine. They sell pretty cheap on ebay- usually no more than like $50 AUS.
You could also just try using some high strength loctite on the thread, depending on the power of the engine. Anything under 1.5hp shouldn't have enough torque to un do it.

That looks awesome Sam.
You might want to think about a throttle return spring, for a little reasurance.
Keep up the good work.