bzhwindtalker wrote:I'll stick to a mid drive hubbie as a big/cheap outruner then. Super easy on controllers, widely available, well documented. I would like to know where the mechanical/ iron loss limit is on a typical hub, anybody have an idea??
neptronix wrote:Would it be conceivable that a really large case and approx. 1.5x the RPM of the hub could really push an identical looking stator to produce double the power?
neptronix wrote:Still waiting on cell_man for a hall wiring combo.
Be very careful when swapping the hall signal wires around. If a hall signal wire makes contact with the hall supply, there is a good chance of blowing the hall sensor. Best disconnect all power before swapping wires.
liveforphysics wrote:I bet the continuous power with that cover on is less than half of the power with it off. That tooth has a lot of air space around it, like they were going for saving $2 in copper over adding 20-30% continuous power.
Okay, back to the case... looks like there is a groove that you could use to seal the motor up by inserting an o-ring, or throwing in some RTV gasket maker, to waterproof the motor.
magudaman wrote:Where exactly can you get these motors? I looked at getting one directly from mac for testing but they didn't even have that plastic case, just exposed, there price wasn't too bad though! It looks very internally similar to that BMC 2000w superkids has that I have been using for a couple years. The BMC has been a great motor and really took some crazy abuse.
John in CR wrote:neptronix wrote:No-load amps are 2.75A @ 38.6v.
Low efficiency, so Luke was right about that air gap. It's not worth your time.
neptronix wrote:toolman2.. what would be the best way to do your 5A test? i have an iCharger and can use the motor drive mode to pump constant current.. but i've never done this.. would i risk damaging the iCharger?
I am stupid when it comes to chain drive. I am still trying to find the proper bits and pieces for a 6:1 gearing at this point , so i can test the motor out
auraslip wrote:I am stupid when it comes to chain drive. I am still trying to find the proper bits and pieces for a 6:1 gearing at this point , so i can test the motor out
Building a drive system capable of 10hp peaks onto a modified bicycle frame has intimidated the hell out of me.
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