Magicpie internal controller upgrade

[subevil]

Have read dicussions on putting a known shunt into circuit am spark but long time since I was at college could you explain what it is and where best to get from if component.
Have feeling it is a resistor or thick gauge wire can any body spoon feed be info
cheers

[subevil]

From pictures they look like heavy gauge wire can any body give a hint what gauge they might be or stop me from blowing up my controller pleeeeeeeeeeeeeeeeeeeaaaaaaaaaaaaaaaaaaaassssssssssssssse???

[DirtyGinge]

The shunt is not normal wire but resistance wire that will only allow certain current through...if you put normal wire you have problems
I found it a little difficult to find here in the UK, try your local google for resistance wire.....

If you cannot find, you can add little solder to the shunt to "shorten" its resistance length......

[subevil]

Increased solder on lands either side of shunt and got 20A on 36V.
That do nicely for now thank you for the explanation

[o00scorpion00o]

I would not modify any GM controller, it's just not built to handle anything over 20 amps constant!

I'm speaking from experience and toasted 4 of them! 

I still can NOT believe they don't have any higher power controllers something like 48-72 volts up to 60 amp controller. A real continuous power not peak! And the option to change the regen, voltage, current etc from software, or even better from a display unit on the handle bars would be so cool!

The option to adjust the controller on the fly would be fantastic, and if the display could be your speedo, odometer, current, watts readings, consumption for battery monitoring. Or the option to monitor the cells for lipo users would be so cool too!

GM have no idea how well they would sell even at 200 Euros people would buy them with features like that!