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Old 09-09-2010, 09:58 PM   #76
RLK OP
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Quote:
Originally Posted by Cedartree
Matt,
Just spent a couple hours reading about your experiences, good on you for getting clear of all that and moving on to better things.
I like the regenerative braking idea.
In theory all you should have to do is run a wire of the same guage or the next size up from the 87a terminal of the relay back to the charge connection of your battery pack. Without a wiring diagram I don't know if the ground is constant or you would have to switch that as well, I assume the relay only switches the power (+) to the hub on and off and the ground would be constant, I'm also not sure if that big hub thingy has a one way clutch in it. If it has a one way clutch, no regen braking, unless you can figure out how to keep it engaged all the time. You probably know that the battery needs to see voltage higher than what the battery can produce to be recharged as well.
Try www.howstuffworks.com its a great resource for inquisitive minds which you should find interesting.

Keep on posting, its a great read.





If I studied up a little more I could probably figure out how to make the 87A pin on the relay turn the motor into a re-generating brake when not under power.
[/QUOTE]

The wheelhub motor is a 2 pin affair. Switch polarity and reverse rotation. It could be wired to charge the battery when coasting but you'd have to get the hang of controling the re-gen braking aspect. I could crash it good by washing out the front due to un-expected brake input. The kit I bought was designed to freewheel (I know) when no throttle was applied. The throttle for the kit broke and I used a momentary button switch for all or nothing operation.
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Old 09-09-2010, 10:39 PM   #77
vortexau
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Location: Just off the Warrego, S.E. Queensland
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Australian prices aren't the lowest but its possible to buy a manufactured e-bike for less than $500AU



http://www.oo.com.au/Electric_Bike_w..._P26671C29.cfm

Certainly it is old-tech Lead Acid, but you cannot get Li-lon for that price here.
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