DIY Electric Car Forums > EV Conversions and Builds > Electric Bikes

RIPPERTON · #1 03-16-2010, 02:26 AM

DC forklift motor rewound to 24v and run at 144v.

174kmh

http://www.youtube.com/watch?v=2LZeX...ayer_embedded#

drivin98 · #2 03-07-2011, 02:55 PM

They're doing it again. Only for reals this time. Team Catavolt will try a 200 mph attempt with the same bike they're taking road racing with a hub motor. For the salt though, they've lashed 4 motor to the swing arm. 180 kW (241 horsepower).

Crazy?

RIPPERTON · #3 07-14-2012, 04:40 PM

It might be Crush Kill Destroy ON the track but off the track we help each other out...for a price.

Catavolt has ditched its heavy deadway cells for A123 pouches...and
Ripperton Racing has knocked up a case to house the 100 odd LiFePO4 cells.
The cell tabs are clamped together not soldered and can be replaced by sliding them out. This pack is 48s 2p but can go to 52s.
This pack took only 3 days to design, machine and assemble compared to the 7 months for my R1 pack

RIPPERTON · #4 07-14-2012, 04:41 PM

the slots are 3 dimensional clasping the 3 side and bottom crimps of the A123 cells

RIPPERTON · #5 07-14-2012, 04:43 PM

series clamp with spade connector tab for BMS

Jon puts them together

jonescg · #6 07-14-2012, 09:27 PM

Looks good - any reason in particular for the V-shape? Not enough length in the bike but plenty of height?

Have you put a gap between them? I hope not - you will get chaffing on the sides of the cells otherwise.

RIPPERTON · #7 07-15-2012, 02:31 AM

Quote:

Originally Posted by jonescg

Looks good - any reason in particular for the V-shape? Not enough length in the bike but plenty of height?

Have you put a gap between them? I hope not - you will get chaffing on the sides of the cells otherwise.

Jon was limited to a 400mm long pack. the cells are 225mm long plus tabs.
The cells are lightly touching each other, no actual gap.
The V was the simplest format. The slots hold the crimps firmly