After decent success with the Manco Street Kart I was yearning for something that could actually turn on a dime. I only wanted an American Vintage race kart, no metric stuff so that all my existing parts would swap over.
After a couple years of looking I finally caught an 83/84 Coyote Bullet racing kart for $400. It moved under its own power but the brakes were shot. Luckily I kept the MCP brakes from the Manco project and they bolted right in.
For the most part this is the same drivetrain. Same motor and controller but the battery is very different. Out went the 16s 45ah battery from a hybrid Pacifica and in went a custom made 20s6p bank of Molicel p42a 21700s. I configured the packs in a 4s6p, 6s6p, and two 5s6ps so that I can use them in any future ebike projects in either 14s, 15s, 16s, or 20s. I use the same two icharger x8 chargers and I still don't run a BMS. I only use 10ah when I run until I'm fully done for the day.
The gearing this time is 20/70 and with the 25% more volts/rpms this hits 50mph on flats with better acceleration even though I currently have the controller turned down to 150 amps. As is only the battery is warm, the motor and controller are cool to the touch.
I've very pleased with house this turned out. The only things I'm thinking about now are bumping up to 24s and maybe using lipos so I can keep the battery small but still max out the controller's 300 battery amp capacity.
Oh yeah, the brakes are powerful enough to lockup at any speed if that your goal but the motor can overpower full brakes from a standstill so I had to make sure I put the brake cutoff switch in again.
Kart weighs 165lbs ready to run.
After a couple years of looking I finally caught an 83/84 Coyote Bullet racing kart for $400. It moved under its own power but the brakes were shot. Luckily I kept the MCP brakes from the Manco project and they bolted right in.
For the most part this is the same drivetrain. Same motor and controller but the battery is very different. Out went the 16s 45ah battery from a hybrid Pacifica and in went a custom made 20s6p bank of Molicel p42a 21700s. I configured the packs in a 4s6p, 6s6p, and two 5s6ps so that I can use them in any future ebike projects in either 14s, 15s, 16s, or 20s. I use the same two icharger x8 chargers and I still don't run a BMS. I only use 10ah when I run until I'm fully done for the day.
The gearing this time is 20/70 and with the 25% more volts/rpms this hits 50mph on flats with better acceleration even though I currently have the controller turned down to 150 amps. As is only the battery is warm, the motor and controller are cool to the touch.
I've very pleased with house this turned out. The only things I'm thinking about now are bumping up to 24s and maybe using lipos so I can keep the battery small but still max out the controller's 300 battery amp capacity.
Oh yeah, the brakes are powerful enough to lockup at any speed if that your goal but the motor can overpower full brakes from a standstill so I had to make sure I put the brake cutoff switch in again.
Kart weighs 165lbs ready to run.
50mph 72v 12000 watt Vintage Race Kart p42a 21700 cells Kelly controller Motenergy Brushless motor
1983/84 Coyote Bullet gokart frameKelly KLS96501-8080H controllerMotenergy 16kw (42kw peak) dual stator brushless motor (Controller turned down to 150 amps i...
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