Whats the reason for 4wd other than because you can? I’m not criticizing your plan, just seeing if its needed. If you just want extra zoom then that’s fine but if it’s currently working you might as well build another board and have less complexity.
I hope it’s enough space for extra battery. 4p with 4wd is wasted money on the extra esc in my opinion.
About wiring the escs up, you have 3 options
All parallel via CAN bus
Dual receiver paired to one remote
Y- split cable to the receiver
I strongly disagree here. I know that “drifting” with 4wd is possible and is normal in todays rallye sport. But 4wd was never made for it and in certain communities you would be laughed at calling it drifting at all, it should be called sliding. Real drifting is always rwd only. That’s how it was the majority of the time in rallye sport and that’s why you often find 40/60 or variable setups in sporty 4wd cars.
For eMTBs I would imagine 4wd sliding to be more difficult and to require a shitload of torque to work at all. But I could be wrong.
You do not need to be scared of it if you have the right esc.
Vesc6 based escs shouldn’t have any issues with it anymore. The trampa vesc6 doesn’t have issues with it for sure and focbox hw1.7 as well doesn’t have.
If you have cheap hw4.12 escs than yes that’s something you should take care off.
This. A loop key is an easy solution to the power button problem.
I was a long proponent of split ppm. But it’s a bitch to adjust vesc settings bc you have to communicate with two masters. But you can’t disable throttle input to one set when setting up ppm settings on the other bc they are linked. (The whole “cut the red wire” issues).
Two receivers has the benefit of being able to unplug one receiver And program the other set and, dare I say … redundancy . But then you also have to check two failsafes and you are limited to remotes that can use multiple receivers.
Canbus for 4 escs is pretty damn easy. I kick myself for not switching earlier. Both in wiring and programming.
TLDR: use canbus, use a loopkey. @mackann does it. Psychotiller Does it. I did it twice.