Since I am getting nowhere on the tractor build Craftsman LT2000 lawn tractor conversion project
when I get out to my folks place I end up doing something besides working on the tractor. I decided to covert one of my motorcycles/scooter either the Honda elite 250 or Honda CM200T.
99 % decided that I am gong with the Honda elite 250 for the conversion. This will be a budget build using parts I already have or are inexpensive. If it works great if not it's not going to break me.
200A peak 100V max DC motor controller on its way here. Programable A limit, Acceleration limit, programable regen off to 100 %, cutback A after so much time setting
Precharge resistors ordered.
twist throttle on order. 0-4.2V
Dc to dc converter 48V-120V to 12V 15A might be a little small.
Dc-Dc 9-35V to14.5V 12A LiFePO4 battery charger
Contactors 1 TYCO Kilovac EV200AAANA, 10 GIVAVAC GX14BBB-1 ( picked them up cheap)
Tennant 72V-24V motor 100A continuous 9.42 hp rating I am hoping to be able to go 150A-175A 14.5-16.9hp. 3300 rpm @72V might see about overvaulting to 84V nominal. Although doubt that will be needed. As my batteries as planed will have 76.8V and 77.7 nominal. The LG modules will be 77.7V nominal.
Have the batteries. A123 LiFePO4 20Ah pouch cells (176 cells) 24s3p 76.8 nominal or LG NMC pouch cells in 7s1P modules 63Ah 6 modules 3 modules for 77.7V nominal.
BMS’s for The batteries TBD
Will need to get new tires for the scooter.
New wheel bearings for the scooter.
Pulleys or spockets for the scooter, Trying to figure out a way to reuse the CVT from the scooter not as a CVT.
I have an extra scooter motor and CVT from another Honda elite 250 I am using it to see how I can mount the Tennant motor and possibly reuse the CVT pulleys. The block is where the left side swing arm (CVT ) and the right side swing arm are attached. When I figure it out I will mount the motor on it and remove the Motor and CVT that are in the scooter currently and replace with the electric motor and modified CVT.
I have a bunch of 12v LEDs marker lids and turn signals less, a 12v LED headlight or two. This would be a definite improvement over the 6V system on the motorcycle.
I will do a conversion on the scooter first, Then if it goes as planned do a conversion on the motorcycle using a BLDC motor/AC motors might use a hub motor here.
The Golf cart induction motors on ebay look interesting just wish more info about them was available. Wonder if they can be overvolted and how much of an improvement to one could expect?