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Multirotor scrap RC car
#1
I had some free time, so I build a turnable car out of heaps of copter parts and junk I had laying around.

I tried to drive it with a CD player motor, but it was way underpowered, so I dug up almost dead DYS BE1806 2300kv motor and slapped it onto this one. Using it with my spare littlebee ESC also enabled me to drive backwards - I set it up as "reversible".




Parts used:

Aluminium frame with a ton of hot glue
Front "axle" made from plastic stick + instamorph "spindles"
DYS BE1806 driven by Littlebee 20A (bidirectional setup).
Transmission: rubberband and bottlecaps
TowardPro MG996R servo (9kg overkill - can rip entire project apart LOL)
Pololu 2A 5V reg
Flysky RX <- also acts as a 5v "pdb"
Runcam HD1 (as FPV cam, no antivibration obviously)
SLS 1000mah 3s pack
Eachine VTX

It works Smile



Front axles from baloon sticks. Hot glued metal M3 screws and IKEA beads made bushings/bearings. Spindles made from instamorph and IKEA beads.





That's how steering mechanism looks detached:




2300kv motor is obviously too fast, at least with this simple "transmission". I had to limit throttle channel to 50% in both directions. It's still hard to control Smile



Tidy enough? ;p





That's my first RC car - I have been asked to make a RC platform able to carry a DJI Ronin gimbal with a regular cinema camera (800x600mm planned), so that one is also my research toward ground vehicles Smile Obviously more parts are needed on platform this big, like a servo saver, brakes (doh!) or any kind of differential but can be omitted on something that small.
Find me on Youtube and Instagram. I currently fly: NOX5, NOX5RAirblade Assault 130 and drive a scrap RC car
[-] The following 5 users Like KonradS's post:
  • sirdude, romvesen, HamsterFPV, BigglesFPV, Oscar
#2
That's so cool Smile
so the wheels are driven directly by the 2300KV motor?? no gear or anything? that would be insane speed haha

and the ESC is driven directly by the receiver PWM signal?
A better FPV'er than LOS'er :) -- My Fleet
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#3
Thanks.

There's no gearbox, but the rubber band is slowing it down a bit - from 5mm motor shaft to "whatever bottlecap size is". Still it's drifting like crazy Big Grin I barely touch throttle even after limiting it to 50%.

Yes it's PWM from the RX. I tried to setup this on Librepilot CC3D, but couldn't get servo to work at all even after setting up outputs properly in "turnable car" mode - I wanted to do a bit of heading assist...
Find me on Youtube and Instagram. I currently fly: NOX5, NOX5RAirblade Assault 130 and drive a scrap RC car
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#4
Awesome!
[-] The following 1 user Likes mwhalen's post:
  • KonradS
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#5
This is one of the most ridiculous/ingénues/coolest things I've seen in a long time....... put a motor on each wheel for 4WD!!....nice going Konrad! Big Grin
[-] The following 1 user Likes sirdude's post:
  • KonradS
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#6
Thanks! Actually when I started researching ground vehicles I wanted to build a 2wd "tank" type steering to power wheels directly using cordless drill motors with their planetary gears. Just like "robot wars" guys drive their vehicles Smile But I made a mini version using brushed motors from old CD player and it was awkward to steer... maybe it was underpowered. That's why I finally made a turnable car Smile
Find me on Youtube and Instagram. I currently fly: NOX5, NOX5RAirblade Assault 130 and drive a scrap RC car
[-] The following 1 user Likes KonradS's post:
  • sirdude
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#7
Very cool!

Strongly reminded me of the "Fallout" game series lol
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