Hi, it's Seb from QC/Canada,
So I bought a used Komodo with everything except the transmission. It's a 2013 and we powered up the 12v system to see that it only has 1800km and 31 hours!
I'm waiting for a Golden Motor 10Kw liquid cooled 72v with the controller and all.
Max RPM of the motor is 5000, the front and rear diff are 2.72:1
The battery pack will be 72v 100ah lifepo4. I'm currently looking for it, different solutions possible here.
Since the original transmission is not here, I will use a trans/t-case assembly from a Suzuki carry. They have a ultra low gear.
Why my calculations, top speed in third will be 72km/h which is more than enough.
I can't keep the front diff since in turns CCW against the rear diff. The trans/t-case assembly outputs the same rotation way in front and back... Anyways the front output is way off center so the driving shaft assembly would be a heahache, especially with the CCW rotation.
We stripped the UTV this week, a lot of weight gone. The input of the rear drive fits bolt on on the carry driving shaft bolt pattern. So I will cancel the driving shaft to go directly from the trans splined output to the u-joint to the diff input. Really cool and short, and only the cost off a new u-joint. I won't keep the clutch.
Once I receive the motor I will send it with the trans to a machine shop that will design an adapter plate and a joint to connect them perfectly centered together. Coupling will be made through an specialized hard rubber assembly (don't remember the name of it) to reduce vibration and shocks from high torque. Same stuff they use in hydraulic motor coupling.
I will sell the Cherry 1000cc engine with all the cables and everything that was connected to it (still has perfect compression).
Also, anyone has experienced this motor size on a UTV this size at around 400kg?
I also need advice about the brake booster vaccum. Is it possible to replace it with an electric 12v pump? Or can I just cancel it? The brakes works with this vaccum line open.
I have also two other projects (Suzuki Carry, and mini jeep conversion), if someone already done that i'm curious about the chosen motor and battery capacity. They will be used to delivery Lithium batteries, worms, ice ect to my customers in their rented lakehouse. Max range needed 20km on very steep hills. The Carry will be used to work on the pedestrian trails and on the lakehouse, I need to keep the selectable 4x4 but since it's already in shape i was thinking about using the Curtis AC34 coupled to the trans. Maybe the golden motor 20kw will do instead?