Nickel (NiMH, NiCad): June 2011 Archives

Boxer EV v4 Photos

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I thought I would post some images of the latest iteration of my Piaggio Boxer EV project. I hadn't actually shown the Prius batteries mounted, even though I had done that almost a year and a half ago.

This is the front, showing new 9 watt LED front bulb. Blindingly bright:

PiaggioBoxerEV4 001

This is the Prius pack mounted in the 6s2p configuration, given me 43.2 volts @ 13 Ah nominal. I made the battery carrier myself. The motor speed controller is below the pack, but it's hard to see from this angle:

PiaggioBoxerEV4 002

This shows the new style HobbyKing motor mounted. The new motor was longer than the old one (even though the specs on HobbyKing's site weren't updated) which meant it could no longer fit in the old motor mount. I had to weld together my own motor mount. Right now, I'm holding the motor only on one side, leaving the other open for the cooling fan (made from a PC computer fan) - note that the motor spins counter-clockwise from this perspective, so the fan draws air into the motor. I think I'll eventually end up making a retention bracket for the right side as well, to prevent too much stress on the bearings on motor:

PiaggioBoxerEV4 003

This left hand side shows how the motor was moved forward in order to fit:

PiaggioBoxerEV4 004

A little view of the wonderful CycleAnalyst:

PiaggioBoxerEV4 005

This is the new reverse-current board that I made using MOSFETs. It's not perfect, but it's more efficient than the blocking diodes that I used -- which were expelling 1.7 volts @ 100 amps == 170 watts when the motor was at full speed!

PiaggioBoxerEV4 006

Ending with another side view.


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This page is a archive of entries in the Nickel (NiMH, NiCad) category from June 2011.

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