Designers note
Design note:
I designed this frame with "dual" frame rails in the rear, on both sides.
(where as most racing style frames just double 'em up the engine side)
This dual frame rails concept was "dual purpose"
...for the ability to mount (2) motor(s) (1 on each side)
…& also, for use as battery trays (2 on each side)
The motors are to be bolted to their mounts
...which are then, aligned, adjusted, supported & secured by/across (2) frame rails
…& the (2) batteries are to sit, just ahead of (a) motor (in a shallow tray) & be supported by (2) frame rails
The way I designed the mount, the motors bolt holes influenced/dictated where/how the motor was attached to the mount
…& also, where the mount was to be placed onto the frame
…& then, the right motor's placement kinda dictated where the driven sprocket needed to be aligned, on the axle
The left motor can/will use the same mount
...as it's sprocket, is easily adjustable
So, I mounted a 48V 1,000W MY-1020 motor on to a motor mount (version 1)
…& then, sat 'er on the kart frame, to align the drive sprocket with the driven sprocket
(I used a straight edge to get 'er nice-n-true)
With this measurement, I was able cut a "spacer", for in-between the bearing & sprocket (see 3rd pic)
…& then, another "spacer" for in-between the sprocket & the rim (see 4th & 5th pics)
Once the sprocket was "in place", I measured, made up & installed a chain
(using the 60T sprocket (6:1) for our first test)