Alan B wrote:I have a 2WD with a pair of PhaseRunners on the Bonanza linked in my sig. It works quite well. They are torque control, so almost everything you read that others have done won't apply to your situation. Don't overthink it, it is fun to consider all the different possibilities, but it gets very complicated with minimal benefit.
Two throttles works quite well (eg left front and right rear), and since they are torque they just automatically add up, unlike the regular speed throttles that most controllers have. Synchronization issues are essentially self solving with torque throttles.
So far I've sent the same signal to both controllers and used the programmability of the PR to adjust the torque/power of each motor.
I generally program the front motor to have lower torque than the rear. The weight transfer causes the front to have less traction under hard acceleration anyway, and I don't want it to slip. But it has proven to be fairly non-critical. With 2 motors acceleration happens so quickly there isn't much drama.
Good luck with your project,
Hmm... so you say I can do this:
I have a front H3525 and a rear ezee250rc at the moment. If I will go for the dual braking approach I will change the rear to be also H3525.
Those motors are built like a glove to the Phaserunner with their very low demand of phase current. (but a higher voltage is required - I use 82.5V battery)
For example, I can program the rear one to have a max phase current of 80A and a max regen phase current of 50A, and vise-versa for the front.
The problem is, I live in a very hilly city, and if I happen to start taking off at traffic light on a +12% slope grade with a wet road, I can't apply almost any torque to the front (or not at all). If I use the above fixed ratios (or any given fixed ratios), I will find myself unable to start as I won't be able to apply the necessary torque on the rear as well.
It can be solved by using the AuxPot on the CA which controls the front, but as I wrote above - I don't want to do any preset-changing values while I ride as it can be dangerous. That's why brake-levers and throttles which are momentary-press inputs are safe user interfaces.
I still got one of those but never tried it:
http://www.ebikes.ca/shop/electric-bicy ... ist-b.html
Do you have an experience with twisting a throttle and pressing a button for regen at the same time?
If it doesn't causes thumb strain, then with this one I don't need a third hand - When I press the e-brake button, both throttles become proportional regen throttles.