dual esc/motor setup

[BrianG]

Sounds like you need a HV and high amperage ESC along with a 1521 motor! That's a beastly truck.

The trouble is with dual BL is getting them to run perfect. One motor may have slightly different kv, and each ESC may be sending a slightly different amount of throttle. So, the faster motor/ESC will be doing most of the work and heat up more.

But yes, you should run twice the battery. After all, you are theoretically doublinig the power. Current will be higher than a one motor/esc setup, but a little less than two added together (less load on each setup).

Yeah, you'd run a Y cable for both ESCs, although it would be better to use CH3 mixed with the throttle channel so that you can fine tune each ESC/motor if needed. A simple Y cable means any adjustments to an individual setup would have to be done in the ESC programming.

If you use dual batteries in parallel, you'd want to use the "unslow" harness, or something like it, to make sure both batteries are drained equally.

Also, you'll need to remove the red wire on one of the ESC throttle cables (to prevent paralleling the BECs).

[mrsnuggles]

the setup

savage xl
neu 1515/1y
mmm v3
polyrc lipo 2s and 3s 4900 mah 25c in series for 5s out

15t pinion 52t spur
gearbox locked in second gear(same gearing as the flux)
cen diffs 2.88 ratio
baja 5b wheels and tires (paddles)6.6 inch approx

gearing was about 15:1 motor to wheels but i have now geared it down to 23:1 by swapping out the 15t for 14t motor pinion and locked it in first gear.

i think that this gearing would be better to keep heat down but i guess the plastic first gear in the gearbox wont be reliable.

i have not tested the lower gearing yet as my fourth mmm is still in the post.

lol i must remember to send the other three for repairs.