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so if I apply a wee blob of solder to the shunt on the ku63 controller, the motor should be able to draw more amps? Speed is limited by voltage so an increase in current will only provide more hill climbing capability?

with respect to the gearing ratio, the obvious choice would be to up the (nearly) 4:1 42/11 set to a 53 tooth chainwheel giving almost 5:1. Whether the motor and/or transmission can handle that remains to be seen.

DJH - sounds like you mebe looking at the torque figures for a "terrible tonaro" scenaro. It comes with a 250watt motor- the legal max in the uk. the crank drive enables the use of the bikes normal derailer gear system which allows the standard 250w motor to deliver its peak power to the road...

beautiful bike, but does it go and will it last?

I was thinking of upgrading to 48v on an existing machine. Does anyone know if the KU93 controller has a pedelec input as well as the throttle input or is it a question of one or the other? Do the infineon controllers have this capability as well?

New ebikes seem to be ridiculously expensive in the uk and I would never again go that way. The possibilities for diy/kit bikes are endless with some amazingly cheap kit out there, especially if you are fluent in mandarin. ev-power (europe) offer some good kit at more reasonable prices though I...

cheers chaps. I ride to a trail, do a few forestry tracks and ride back, depleted. how much i never know but as you say, experience will out. And as you suggest a watt meter would be the thing, i'm jus surprised the manf. havnt included an adequate piece of equipment for the job. All that money...

As a newcomer to the serious business of ebikes, and being rather unfit to boot, I find that not knowing how much power the battery will allow me to finish my journey a source of some continual stress. The standard battery level meter has a four light indicator of dubious integrity. After a...