You mean like the one aqwut did?

yep.
i figured it out bout the gears, gotta ditch the external shifter.
use some sort of slipper instead, it will stil be 2 speed.

yet another question, can ( for example) bk 36120 controllers handle 10s lipo?

Another option would be a DPR by BNB.

36 cells give 43.2v, and 10s Lipo fully charged gives 42.0v, so 10s Lipo should work fine.

42V Wow! That's quite a set-up.

thanks metalman!

I was hoping it handle 12s lipo.
That is my goal. It has me worried a little. :032:

That is close. 12s fully charged would be close to 50v right?

50.4 volts to be more exact. :D
If you take 36 cells off charge it will be like 1.4 a cell.
It comes out to 50.4 as well.

You might be ok if the initial voltage falls quickly back to the nominal 3.7v/cell (44.4v)

That's a really nice price and seems to have about the same features as the Eagletree systems.

Brian, yea the DPRs are pretty neat. The DPR software is quite decent too. Only downside of the DPRs is they can't have more than 30V flowing through them. But for alot of HV setups one will probably have two series'd packs anyway if running more than 6S, so not a problem then.

The portable LCD that Eagletree make is quite intriguing though. I guess that could come in handy.

man you guys are building some crazy high power sustems huh..
phil

It looks incredible for $62. I'm tempted to buy one but I really like the Eagletree systems product. It does a great deal more and has nicer software but at tripple the price. Plus, if you really like it you can get the telemetry component and datalog to your pc or monitor it at you transmitter.

but $62 for a decent basic datalogger sure is appealing...........