Good! Someone finally oil cooled a hubbie!! HS3540

[John in CR]

On my other motor I run regen braking so I don't use a back brake caliper so no worries about clearance there.

Hmm. I use regen AND a disc brake. I find that my regen braking just does not cut it in case of an emergency brake. In such a case, I want both my front and rear hydraulic calipers to be fully engaged in providing the maximum braking without blocking.

kids this is good advice,

It depends on the rig. I run regen as the only rear brake on my SuperV, and at 5.5kw peak braking it test the limits of traction. The only time I miss a rear mechanical brake on that bike is at very low speeds where there is no regen braking. On my cargo bike I run throttle activated regen with a very gentle stopping force, so yes that bike requires a rear brake.

John

[Andje]

I feel like skidding my rear tire in an emergency does not compare to instant full regen of about 5000w. I doubt my calipers can absorb 5000w as efficiently as my motor.

[hjns]

I feel like skidding my rear tire in an emergency does not compare to instant full regen of about 5000w. I doubt my calipers can absorb 5000w as efficiently as my motor.

Agreed. However, in an emergency stop, I use both regen AND calipers. The regen will bring me back to 20kmh only. Also, adding the brake force of my hydraulics to the regen allows for an even better controlled stop. And yes, of the 6kW power, 5kW may be produced by the regen, and another 1kW by my calipers, which is very nice.

[The Stig]

Well it sounds like the NZ geeks are having some luck with this oil cooling thing
http://www.ev.geek.nz/viewtopic.php?f=32&t=162&sid=7c6fe6e8b7a1a2f8e8879728ce4247fd&start=150

Anyone tried this with a 9C or MAC?