Fan Powered RC car

by gr1999 | March 17, 2013 | (4) Posted in Projects

Hi Guys

I recently built this Fan powered RC car with the help of my metal work techer at school. It runs a ParkZone 2200Kv motor (Origionally from my friends Stryker) with an E-flite ESC (don't know which one sorry) I used Tyres from a Tamiya Midnight pumpkin. The base is aluminim with an aluminium motor mount riveted onto it. these pics are a bit outdated since i turned the motor around and put the servo in a different position. one thing i am having trouble with is that when ever i go to full throttle it start spinning around like a yoyo. can anyone give me a suggestion on how to fix this?

 

The steering wheels have a bit too much camber (working on that)

The back axel attachment system (credit to my metalwork teacher)

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COMMENTS

cloud9photos on March 19, 2013
torque roll (lol)

If it is always spinning off to the same side you can try to off set the motor in the opposite direction using small metal washers.
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gr1999 on March 21, 2013
It just pulls the back around sort of. its wierd. ill try and upload a video of it soon. no promises.
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RetroMcSmart on March 19, 2013
Nice! Like to see it in action. You should move the propeller forward, then it might be more stabile.
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gr1999 on March 21, 2013
ill try and upload a video soon. no promises.
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rcspaceflight on March 20, 2013
All I can think of is to try building a fan shroud to direct the air. It would probably work best if you have the motor facing back like you do in the picture and then mount two pieces of foam board (or more aluminum) straight up from the body to direct the air straight back. How the air comes into the propeller/fan shouldn't matter. Only how the air leaves the fan is important.
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gr1999 on March 21, 2013
That might work. Although just moving the motor forward might work as well. Thanks.
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rcspaceflight on March 21, 2013
I was thinking about it, and whenever you see a fan boat or a hoovercraft the fan is always in the way back. There has to be something to that. Also, there was a time when all cars where rear-wheel drive. Even now-a-days when a car is built with a lot of horsepower it is always rear-wheel drive.

Maybe do an experiment and try moving the motor mount forward and then try it in the back. You'll just have to drill a few extra holes.
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gr1999 on March 21, 2013
Thanks ill try do that.
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gr1999 on March 21, 2013
It looks like its actually lifting the steering wheels off the ground sorta
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rchand on March 21, 2013
Airboats have the fan at the stern to hold the bow away from the water, so this makes sense. Dead center should work, and maybe some form of rudder like on the wright flier, at the front for some more directional control?
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rcspaceflight on March 25, 2013
If it fixed the wobble/spin problem you were having you could always change the trust angle so the fan pushes the car down and forward. But like someone else suggested, maybe moving the thrust angle to help counter the rotation of the prop could fix the problem too (while leaving the motor in the center). I hope you get it figured out and working well.
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baconflyer on March 28, 2013
awesome! I did something similar a while ago, but with a big 750 watt hobbyking donkey motor spinning a 12x6 prop, and I mounted it on the back of a homemade longboard skateboard. what's REALLY cool is that it uses a regular rc tx to control the throttle, so I can either stand on it and ride it myself, holding the tx as I ride, or I can have my friend ride it and I can control the throttle =)
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cashcashcars on February 11, 2023
Fan-powered RC cars are a great toy to have! They're powered by batteries and feature a small fan or blower that propels the car forward. These cars are perfect for indoor use, as they're lightweight and don't need much space. Plus, they're easy to operate, making them popular toys among kids and adults alike. With hours of fun and a chance to learn about engineering and technology, fan-powered RC cars are terrific toys for everyone!
https://cashcashcars.com/areas-served/junk-car-removals-los-angeles-ca/

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Fan Powered RC car