Re: what sort of lathe sufficient for adapter plate and making keyway

I really wanted to do your idea of a ring of 0.25" steel like you did, but I didn't think to make a ring roller.  That was awesome!  Also, I don't have a good way to make cuts in steel at this time, other than with a hand held grinder.  I searched for a REALLY BIG steel pipe to cut short, but to no avail.  

As far as torque goes, this car is going to be basically an NEV that goes 0-35 with very slow acceleration.  The torque I hope will be small enough so as not to mess up the spacers.  If not, I may put in steel spacers.  Also, I'm going to seal the motor compartment from the elements below.

Next time, I would like to do a spacer ring.  Thanks for posting your progress!  I'm really impressed!  How do you cut the steel so precisely?