hallkbrdz
100 W
It's finally time to start documenting my build on this forum, and eventually with videos on YouTube. The goal for this build is to create a kart that is competitive with both of the local tracks karts. B&S 206, and TAG 100cc. Obviously the B&S is easier (and will allow for much longer runtimes), but the goal is at least a 18 minute runtime from the battery pack without charging. That's good for two races here at our short road track. I'm leaning heavily on the lessons learned by several others on here who have brazed the trail so to speak, chiefly Kohlme's.
The kart I am starting with is the one I raced in 2018. It's a GP Racing 2008 shifter kart model. Here, shown with the Honda 80cc engine.
Battery: The first thing to be built will be the battery. This will be composed of 420 Molicel INR-18650-P26A cells in a 42S10P arrangement. The reason for a higher voltage is to support 120v motors such that at the end of the pack use the minimum voltage is still above 120v. The battery case will include a GV200 contactor, fuses, as well as a low-amp switch to a Vicor VI-251-EW DC/DC converter (external).
Motor: This is not what I really want, but it's what I can get for now. I live in Oklahoma, and it's hot here. An air-cooled motor just isn't going to cut it. I need a motor that is liquid cooled to keep it reasonably cool, without it weighing a huge amount. So to start with I plan to use a Motenergy ME1302 for B&S 206 speeds, to be replaced with a much more powerful as well as lighter to-be-released DHX Machines model early next year for TAG speeds.
Controller: For now a Kelly KLS14401-8080IPS. It can handle the voltage, and has current capabilities that match well with what I am trying to do.
BMS: Orion2. I like the all in one design, plus great support being a US company product. It will be external to the battery, connected via a 55 pin Mil-Spec round plug, saving me money when building a second pack.
Motor Mount: Custom. Loosely based on the Honda motor-mount, but much longer to distribute the torque as well as to support the right-side radiator and controller.
Sprockets (initial - I have multiple axle sprockets already):
Motor: 428 15 tooth - middle of the range in regards to the rear
Axle: 50mm 30 tooth - should give a final speed of 80 Mph at the end of the "straight", about 7 Mph quicker than the TAGs
Display: Probably a Samsung tablet, connected via bluetooth running torque.
Charger: Offboard Elcon or TC 3Kw canbus regulated.
Obligatory starting photo, although all the ICE stuff has long been stripped off (anyone need a Honda 80cc expert motor?)
The kart I am starting with is the one I raced in 2018. It's a GP Racing 2008 shifter kart model. Here, shown with the Honda 80cc engine.
Battery: The first thing to be built will be the battery. This will be composed of 420 Molicel INR-18650-P26A cells in a 42S10P arrangement. The reason for a higher voltage is to support 120v motors such that at the end of the pack use the minimum voltage is still above 120v. The battery case will include a GV200 contactor, fuses, as well as a low-amp switch to a Vicor VI-251-EW DC/DC converter (external).
Motor: This is not what I really want, but it's what I can get for now. I live in Oklahoma, and it's hot here. An air-cooled motor just isn't going to cut it. I need a motor that is liquid cooled to keep it reasonably cool, without it weighing a huge amount. So to start with I plan to use a Motenergy ME1302 for B&S 206 speeds, to be replaced with a much more powerful as well as lighter to-be-released DHX Machines model early next year for TAG speeds.
Controller: For now a Kelly KLS14401-8080IPS. It can handle the voltage, and has current capabilities that match well with what I am trying to do.
BMS: Orion2. I like the all in one design, plus great support being a US company product. It will be external to the battery, connected via a 55 pin Mil-Spec round plug, saving me money when building a second pack.
Motor Mount: Custom. Loosely based on the Honda motor-mount, but much longer to distribute the torque as well as to support the right-side radiator and controller.
Sprockets (initial - I have multiple axle sprockets already):
Motor: 428 15 tooth - middle of the range in regards to the rear
Axle: 50mm 30 tooth - should give a final speed of 80 Mph at the end of the "straight", about 7 Mph quicker than the TAGs
Display: Probably a Samsung tablet, connected via bluetooth running torque.
Charger: Offboard Elcon or TC 3Kw canbus regulated.
Obligatory starting photo, although all the ICE stuff has long been stripped off (anyone need a Honda 80cc expert motor?)