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Deleted member 4366
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I got one of these to try on MY GNG crank drive kit. About £60. They do a range of powers from 250w upwards.
http://www.conhismotor.com/ProductShow.asp?id=323
It's really nice. I don't yet have the manual for the display because they don't send one with it or provide any link, but you can get one by e-mail. The basic functions are fairly easy to figure out, but I can't work out how to set the wheel size to get the correct speed.
By pressing the power button, the odometer part of the display, displays different parameters. I don't know what they all are, but there's one for voltage, which is very useful, and one for current, which seems to stay on zero. If you have 36v lights, you can switch them on from the panel too.
It seems to work really well with the GNG, but I could do with one with a bit less power. This one must be about 30 amps because it's made the motor a lot more lively at full throttle. With the pedal assist levels you can select a nice low crank speed, which tames everything down. Overall, I'm impressed. I'll be taking it to Redbridge if anybody wants to try it.
One thing though: there's quite a few connectors that need changing, and they don't provide a speed sensor. I cut one off a cheapo (£2 from China) cycle computer, which seems to work when I get the speed right.
Geoff9 also has the 250w version on the bike he's building at the moment. We should see the results soon.
Look out also for Saneagle's Kraken, which is the nicest home-built electric bike I've ever seen. Everything is so right that you wouldn't normally give it a second look, but if you want to build your own bike, you should check out the details - and to think that the bike only cost £90
http://www.conhismotor.com/ProductShow.asp?id=323
It's really nice. I don't yet have the manual for the display because they don't send one with it or provide any link, but you can get one by e-mail. The basic functions are fairly easy to figure out, but I can't work out how to set the wheel size to get the correct speed.
By pressing the power button, the odometer part of the display, displays different parameters. I don't know what they all are, but there's one for voltage, which is very useful, and one for current, which seems to stay on zero. If you have 36v lights, you can switch them on from the panel too.
It seems to work really well with the GNG, but I could do with one with a bit less power. This one must be about 30 amps because it's made the motor a lot more lively at full throttle. With the pedal assist levels you can select a nice low crank speed, which tames everything down. Overall, I'm impressed. I'll be taking it to Redbridge if anybody wants to try it.
One thing though: there's quite a few connectors that need changing, and they don't provide a speed sensor. I cut one off a cheapo (£2 from China) cycle computer, which seems to work when I get the speed right.
Geoff9 also has the 250w version on the bike he's building at the moment. We should see the results soon.
Look out also for Saneagle's Kraken, which is the nicest home-built electric bike I've ever seen. Everything is so right that you wouldn't normally give it a second look, but if you want to build your own bike, you should check out the details - and to think that the bike only cost £90
