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My homemade rc car

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Old 04-04-2007, 08:29 AM
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sam123
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Default My homemade rc car

Hi there everyone, I would Like to share with you some pictures of my homemade creation:

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engine is a kawasaki 18cc
chassi is made from 3mm thick high tensile aluminium
front end is off an electric powered off road rc car
fuel tank is a small poweraid bottle
rear wheels are from a hardware store (you can see they're already going bald from doing too many burnouts )
It has no breaks at the moment
It weighs about four kilos
has all standard electronics - no need for special steering and throttle servos.

The front sprocket is six tooth (from a pocket bike) and the rear sprocket is a 28 tooth (from the cam of a four stroke dirtbike engine). The wheels are about 3.7 inch in diam. This car has VERY good acceleration and top speed. The steering is the part that amazed me the most, as it is just as good as any of my other RC cars. The only problem is that if you turn too tightly and give it too much throttle at the same time, it flips over. I am going to fix this problem by lowering the engine and rear end of the car. Another thing I have to do is add breaks to it. Even though I have not yet gone to top speed with this thing, I am fairly certain that it will go between 60-65 km/h.

The rear axle is just a solid piece of steel bar that has the wheels and sprocket hub pressed onto it.

Tell me what you think!!
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Old 04-04-2007, 08:49 AM
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huw4027
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Default RE: My homemade rc car

I wish i had the know how to build something like that. [sm=thumbup.gif][sm=thumbup.gif]
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Old 04-04-2007, 10:01 AM
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IONIC-M
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Nice work and clean!!!!!!!!!!!
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Old 04-04-2007, 10:23 AM
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That's pretty cool. Very Mad Max.
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Old 04-04-2007, 10:27 AM
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Aheheeeeeeee ! that's coo.











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Old 04-04-2007, 11:59 AM
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Very nice work!!! If I had a spare engine I'd do something like that fro sure!! I love seeing stuff like this!
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Old 04-04-2007, 12:21 PM
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Default RE: My homemade rc car

mmm... thats raw... i like! this is what a hobby *should* be about, its what you want to build, not what big companies want you to buy....
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Old 04-04-2007, 06:26 PM
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devo208
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off the hook, thats what i'm talkin about
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Old 04-04-2007, 06:34 PM
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good work bro. how fast is it?
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Old 04-04-2007, 06:56 PM
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Nice, thats bad ass. Lets see some video of it in action.
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Old 04-04-2007, 07:29 PM
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Default RE: My homemade rc car

Thanks for the replies everyone. This first car was just a practice model. I am now in the process of making a new rc car that has a stronger, lighter and better looking chassis. The engine is going to be a 22cc echo hedge trimmer engine. Here are some pics:


















The front end of the car this time is mounted to the frame and also a second plate, which also holds the reciever and has the steering servo underneath it. This time the chassi is 3.5mm thick. The rear end has a completely different setup, the axle is smaller and the bearing mounts are different. The front end and wheels are also off a newer and better car

These pics are a bit outdated, because I have since mounted the sprocket on the axle, mounted the fuel tank and alsomounted the engine.

I have one question: Do you guys think that this 22cc 1hp engine would be too powerful to use with the transmission of a 1/8th scale thundertiger buggy? (the car is the thundertiger S2 PRO and all the gears are hardened steel)

Thanks!!
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Old 04-04-2007, 08:02 PM
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Default RE: My homemade rc car

WOW that is an awesome car, i was thinking of doing similar a while back, but couldnt pull it together... Great wrok, looks like a Kart!!!
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Old 04-04-2007, 08:37 PM
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Default RE: My homemade rc car

i dont think the engine has enough power to damage those gears .. a good .21 nitro motor has more power then the Echo engine .
nice creative work ... its great to see people using there head for other then a hat rack ..
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Old 04-04-2007, 10:04 PM
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Default RE: My homemade rc car

are you planning to put some suspension at the rear as well?
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Old 04-04-2007, 11:21 PM
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Default RE: My homemade rc car

Itd probably make a difference and make the car go better, i think...
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Old 04-04-2007, 11:28 PM
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Default RE: My homemade rc car

sam123,
Of course you realize now you'll HAVE to form your own body? Keep her going! Good job!
You may have inspired me to convert an old '89 Ford Escort to R/C.
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Old 04-04-2007, 11:50 PM
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Default RE: My homemade rc car

For the body, I am just going to have a rollcage with pieces of aluminium plate rivitted onto it - much like the sand-rail type buggies.

I am not going to have any rear suspension because it makes the car more difficult to build (I only have basic tools: cordless drill, files and a hack saw). To compensate for having no rear suspension I have tried to keep the weight down as low as possible.

Once this project is finished I will be converting my thunder tiger nitro buggy to petrol powered, because the engine on it has siezed and I don't want to waste all my money re-building it. Soon I will have some progress pictures of that project uploaded too.

Thanks, Sam
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Old 04-05-2007, 05:16 AM
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Default RE: My homemade rc car

Just wondering If any of you guys could give me some links to some of the other rc-car creations on this site? Its always fun to see what other people have built.
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Old 04-05-2007, 09:38 AM
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http://www.****************.com/foru...highlight=quad

I know it's from another site, but this is some serious fabrication.
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Old 04-05-2007, 09:49 AM
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Default RE: My homemade rc car

ORIGINAL: bigbademan
http://www.****************.com/foru...highlight=quad
I know it's from another site, but this is some serious fabrication.

[X(] That is incredible work! If only it had a Zenoah...
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Old 04-05-2007, 10:22 AM
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Very cool.
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Old 04-05-2007, 07:22 PM
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sam123
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Default RE: My homemade rc car

thanks for that link. That thing is awsome!!![X(]
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Old 04-06-2007, 06:51 AM
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Default RE: My homemade rc car

I see you dont have rear differential, its bad for stearing, you will have over-stearng
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Old 04-06-2007, 11:18 AM
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Default RE: My homemade rc car

Excellent work Sam!

If you are adding the engine to the Thunder Tiger I would think about making a chassis that would be longer. For the added weight add some fuel line on the shock shafts so there's more tension. IF you use thicker oil you still have to get stiffer spring. Just some inexpensive ideas.

Also great to see work done with minor tools!!
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Old 04-06-2007, 08:40 PM
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Default RE: My homemade rc car

Thanks SELWA. I never thought about that trick with the fuel line, it should come in handy
Last night I traced down the chassis onto a piece of 4mm thick aluminium and I am going to cut it out today. If I can get my digital camera to work I might have some pictures of it up later today.
thanks.
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