RC Car Prototype with 4 brushless motors - The Beast

Last crawled date: 1 year, 11 months ago

Rc Car Prototype mounting a brushless drone motor (QX2812 980kv) on each tyre (so 4 motors). I connected them to a Frsky D8RII Plus in PWM (one motor on a single channel) giving the same throttle input from the radio by the Pitch Stick, in order to have the reverse and the gas on the same side. Each motor is connected to a Racerstar RS30A with firmware BLHeli where i enabled the Bidirectional type for the esc behavior, the brake on stop and the damped light, the latter to have the brake function. Servo used has 25kg of force at 6V (5V used) and it's very precise. Electrical part is composed by a PDB for sharing energy from the battery (2200 mah 3s Lipo) to esc, 5v BEC and VTX. Two type of bearings used : 693ZZ (3mm*8mm*4mm) for bracket mounted on the chassis and 694ZZ (4mmx11mmx4mm) for knucle and servo arm. Tyres mounted are for 9116 RC CAR. I assemblied it and it's very funny but a precise calibration of all motor is very important. Would certainly be better if traction control software was implemented for each wheel but ... one thing at a time !!! :) Uploaded files allow you to print it in PETG without problems. Happy Race!!!

Specification :

4 x QX2812 980kv Brushless Motors
4 x RS30A Racerstar ESC
Power Distribution Board
Frsky D8RII Plus
2200 mah 3s Lipo
Servo DS3225
9116 RC Car Tyres
5v UBEC 5A
3d Printed PETG Chassis
693ZZ (3mm*8mm*4mm) Bearings
694ZZ (4mmx11mmx4mm) Bearings
E709TM3 VTX
Eachine 1000TVL Camera (5V Camera)

PS: I will update bearings, screws and electronics in the model as soon as possible. I will reply to your doubt.