Kawasaki KZ440 Electric Conversion

[Ben Nelson] didn’t even know how to ride a motorcycle when he started on this electric conversion of a 1981 Kawasaki KZ440. The engine wasn’t a loss since the bike was nonrunning when he purchased it for $100. The permanent magnet Etek motor was $500 and each of the four yellow top batteries were $160 (only three pictured). He says that the majority of the conversion work only took two weekends. The resulting, still street legal, ride averages 20 miles per charge with a 45mph top speed.

More electric motorcycles on Hack a Day:

[via Ecomodder]

Maker Faire 2008: Electric Motorcycles

Builder [Justin Gray] brought a pair of electric motorcycles to Maker Faire last weekend. Pictured above is the R84, which has 28 LiFePo cells and an 84v AC induction drive providing 54HP. All of that is stuffed in a 2000 Yamaha R1 frame. You can buy it now for $14,000.

Continue reading “Maker Faire 2008: Electric Motorcycles”

A123 LiIon Battery Pseudo Extra

Every so often I have to slap myself in the head. I’m surprised that we haven’t covered these things by now. DeWalt’s been selling a LiIon 36 volt battery pack that’s full of the latest A123 cells. These are the same ones that were used in the Killacycle. (I think they’ve got a new batch of cells now).

A while back, [Jeff] sent in a circuit for using multiple packs, leaving the internal BMS in place. [The link is fixed now]

[Robert] sent in a scooter that’s been designed to run these same cells. The custom fabrication and machine work looks fantastic.

Electric (motor)cycle Extra

[Zach Norman] built this electric bike on a Harley frame. I couldn’t dig up much in the way of details, but the flickr photo set looks good.

[Micheal Raines] built a great looking electric chopper.

In the lightweight category, this hybrid (pedal/electric) bike uses li-poly batteries and a simple motor-tire drive to keep going. via [hacknmod]

Early this morning [tnkgrl] sent in her HSDPA mod for the OQO Model 2. Engadget beat me to it, but it’s a great mod for anyone who visits outside of those handy EVDO areas but want the speed for their UMPC. Living in the middle of nowhere means that I’m stuck with RxTT.

[andrew] built a handy parallel port A/D converter – so far he’s got it logging temps. The parts count is pretty low, depending on an ADC, a 555 and some OP amps.