US M41A3 w/ twin 540 FL tuned 30T motors mudding... the rainy sunday afternoon presented a unique opportunity to test the high torque from the twin 540 motors.
Heng Long 1/16 M41A3 Walker Bulldog RC Tank with Dual Mabuchi RS540 Motors. Modular 3D printed tank mounts and worm gear drive housings I designed on TurboCAD.
RC ball bearings on worm drive. 3D printed beaing insert on drive axle with 16x8x5 ball bearing for output. Fabricated aluminum motor rail. Run with Sabertooth 2X12, single7.2V battery. Final drive ratio 23.64 to 1. Drop in 3D printed mounts use same stock mounting holes as oringinal gear housing.
Had to custom make the spur gear hubs from a shaft coupler and a universal hub on lathe. The drive axles are fabricated from 5/16 grade 5 bolt shank and RC truck axle. Lid fit on the tank, motors are right under the air vents!
This turned out so nice, wanted to share this with you. These mounts should fit in any Heng Long tank with any motor. What is really nice is to be able to change gear raitos you can't do with stock gear boxes. Will see how they hold up. Very tight fit but it works, mission accomplised.