Thank you very much Jeremy. I have been studying(literally) the information on this forum. I think I have figured out what setup im going to run on my e-bike.
80-100 130kv motor
-Yes i know that the 80-85 might be smaller and cheaper. But 10 bucks more for a motor with a much higher potential
Im going to modify my controller with IRFB4110 FETS
Adjust the shunt value with solder to allow higher current.
upgrade to a 12 or 10awg wire for phase and power wires
If heat becomes a problem I am thinking about running 1/8in ID copper tubing for beefing up the solder traces, but also use them for liquid cooling.. in addition to a liquid cooling plate between the Isolating film behind the FETS and the Heat spreader bar.. Would be a very good way in increasing the cooling of the esc- especially having the coolant essentially right on the FET legs. I Plan to use PC cooling fluid as it does not conduct electricity or Distilled water.
The long traces are the easiest the traces going to the phase wires will be the toughest because of proximity to other components and paths that need to be isolated.
I still have yet to discover how to change the low voltage cutoff on the esc to work with my 12s lipo configuration (36v) from the stock 42v.
I also Need to find the resistor that steps the voltage down to run the processor and other voltage sensitive components.
Does anyone know anything about programming these refly boards, or is it a lost cause?
here is a picture of what may be the programming port?
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As for the Drive system-
Im going to turn my motor shaft down to either 10mm or 3/8in
then bore out an 18t GT2 pulley to an equal diameter
that will be belted to a 72t gt2 pulley mounted on a 5/8in jackshaft.
on the other side of that jackshaft will be a SBP 9t sprocket to the SPB freewheel crank then back to the stock rear derailuer.
It is geared to do 23mph in the lowest gear, and a hair over 40mph in the highest gear...
Also got a nice big 2ft peice of 1/4in 6061 aluminum
