Hi Rich,I am new to EV's. I'd like to get some insight. I'm a racer. Started in motocross, then autocross and road racing. I'd like to build an RWD autocrosser. So obviously first choice is miata. But open to suggestions.
Now to my question...
My goals are light weight-ish (for an ev at least). So my packaging is my main focus. Can I forgo the trans/driveshaft and directly connect the motor to the diff by rotating the diff and having the motor vertical in the trunk or conv top space?
I ask this to delete the weight of the trans and drive shaft and leave more room up front for a lower flatter battery pack.
Any thoughts. I'd need a motor to spin both direction and relatively short but with good torque. And higher rpm power since I won't have a trans to rely on for higher speeds.
I think you will find it difficult to find a reasonable size motor which will work with available rear end ratios. Meaning you will need a high RPM motor and a gear reducer between the motor and diff even if it is direct drive, meaning a single ratio non-shifting set-up. You might look at quick change rear ends which have a spur gear set in front of the ring and pinion. This would also allow you the option of choosing ratio to fit the track. But you're not going to mount that vertically.