I have a couple of prop ideas that need a low speed motor.
As usual I want it to be fairly weatherproof in case it rains while out on display.
The mounting hole centres are 38.2mm and the shaft hole is offset by 8mm.
I drilled all three holes by measurement, but you could drill the shaft one first
and then mark the smaller mounting holes by temporarily putting the motor
in from the top.
The motor was a 12V 14 RPM type (about $3.50 on eBay).
M3 x 8mm machine screws and nyloc nuts were used to secure it.
The thread in the shaft end is 3mm so I used an M3 x 6 machine screw.
Since I won’t have a huge load on the motor, I just did it up tight.
You could add a drop of loctite to secure it more if you wished.
To be continued …