I have really enjoyed your post. Trying to figure out how I might be able to do this with typical tools? How did you go about drilling/aligning the holes into the frame for mounting the washer?
Mike, it might of helped if I showed that step!....in the case of the mohawk, the bottom of the motor mount or in this case the washer has to be as flush with the bottom of the frame as possible, if it did poke down a wee bit, no worries, just file it off....I reverse image the back of the frame with masking tape on the washer....I put a piece masking tape across the washer, I lock the washer in place on the back of the chassis where I want the washer to sit with a woodworkers sliding C clamp...I use a small Xacto knife and trace the frame member out of the tape....now I have a perfect mirror image of the frame on the washer. I can draw on the tape with a sharp pencil and measure out where I want my holes to land. I drill the washer first, making pilot holes on the drill press...with the tape still applied to the washer, I reclamp the washer to the frame, and use a drill to mark the frame where the machine screws will land....this method has never let me down....after that, it’s just a matter of drilling, tapping And countersinking for 6-32 machine screws. I cheat very badly when it comes to mounting the motor to the washer, I have an old face from a Pittman that I can clamp right on the washer and drill right through the face and onto the washer for a pilot hole....all of this work can be done with common tools, with patience and careful measurements, I just so happen to have a machine shop at my garage so I have access to lathes, band saws, high speed cutters, and carbide cutting tools....although my sons always seem to be occupying the machines I want to use!...........Pat