TRX4M 18650 Battery Holder Skid Plate + 6mm Shock spacer

thingiverse

Designed for the TRX4m Defender. This lowers the center of gravity considerably, it probably fits the Bronco too. I can't confirm this. Drill all holes of the 3d printed parts to 2 mm. You can reuse the screws from the original battery tray for the cable tie points. If you want, you can still use the original tray. The original battery tray and the 18650 cell won't fit at the same time. The holders are made for PCB mounting, so you have to bend up the pins before soldering for best results. Drill a 4 mm hole and a 6 mm hole 1 mm deep in the holder for the heads off the small screws on the frame rail. Use Dupont connector for making your own plug, V+ is closest to the motor plug, V-/ground is closest to the edge of the ECM. The ECM does not work without the center connection between the 2 cells. Works great together with the Injora brass parts, wheels and TRX9776R  low range gear set. Recommended minimum Battery discharge current = 10 to 15A this is a guess let me know if you tested this. Tested this with Panasonic 5A NCR18650b 3400mAh, no good. too little discharge current. Tested this with Sony/Murata 30A VTC6 3000mAh, they work great! The cells are in series with the center tap Vt in between the 2 18650 cells WATCH OUT, THE ECM IS NOT REVERSE POLARITY PROTECTED!!! Parts: Front:  TRX9759 Spring, shock (GTM) (0.123 rate) (1 pair) Rear:  TRX9760 Spring, shock (GTM) (0.155 rate) (1 pair) 2x 18650 holders on AliExpress → shorturl.at/pvBEI 3x1 + 1x1 Dupont connector glued together 10x M2 nut 8x 6 mm M2 screw 2x 8 mm M2 screw Happy crawling :)