BMC 400W rear with 36V LiFePO4 -- controller?

[cloudhands]

I'm seriously thinking of putting the BMC motor/battery on my Townie (I've already paid for the 36V 20ah Ping). I've seen posts here that say that the BMC controller that comes with the kit won't pass much more than 20 or 22 amps. I've got some serious hills to get up on my way home. Hopefully the motor/36 volts will do.

The question is whether it's worth paying another $100+ for a different controller. I've spent far too much time reading these forums in the last week, so I know a little bit (plus I have some ebike experience having given/built a bionx kit for my wife).

My primary consideration is range, but then I'd also like to make it up the serious hills when I hit them.

Controller? Opinions?

 

[snowranger]

That controller seems about right. You can always add solder to the shunt inside for more amps.

 

[cloudhands]

OK, ordered from cycle9.

I found the BMC kit from two other sources at a lower price, but from dealers without phones, and who have not yet answered emails. Cycle9 seems like a real store with good people -- nothing sketchy about it.

Waiting for the Ping, and the kit; the Townie hanging in my garage.

 

[DAND214]

Give it a try before you get another. I have 2 400W bmc, one has the weak controller and runs great and quiet the other had the upgraded 35 amp and it blewup. Now running an Infineon 48v 36 amp from Keywin and it runs fine but is much noiser than the other hub. try it before you change, you will love it. As suggested you can beef up the shunt if needed. It;s a great hub.
Dan

 

[snowranger]

If you run 700-1000 watts through this hub, you should be okay. Any more than that then get the 600 watt version which will be much more reliable at higher power levels or heavy loads.

 

[rkosiorek]

I run mine with a Crystalite analog controller. some of the newer digital controllers do not work well with the motor for technical/hall timing issues.

rick