Glad you guys are interested in the project! I'd also love to find a tractor mounted Barber-Greene, but the price was RIGHT on this one.
So first i made the missing things and got everything mostly straightened and back to smooth running.
Since the stock crank had a 5 tooth cog, i ordered a set of replica 5 tooth 'small chain idlers' for the machine from a toy parts dude on ebay.
After cleaning up the parts, i soldered a brass shaft into that gear, made flats on other end of shaft to take setscrews in motor coupler. Opened up a motor coupler to fit the shaft and gearbox outputs.
Current gearmotor labeled as
Jf-310 12v dc, shenzehn jinlu motor co ltd
Shorter motor i'm also considering
20ga130d012 , dc 12v , 200rpm
Since i only care about turning 1 channel on and off, i wired up a 1a (700mah running) "Mini Relay Wireless Switch 12V 433Mhz Remote Control Relay Switch, Secure 1-Channel Micro Receiver with Transmitter System in Latched Mode DC 3.7V 5V 6V 7V 9V 12V"
To run the motor & rx off the same power supply the wiring is a little different
Red, Yellow to Deans +
Black, New wire to Deans -
Blue to Motor
New wire to motor
Motor runs off of Normal Open and Com relay pins
Red A button turn on, Grey B button off
Then made a motor mount that's basically "this is only temporary, unless it works".
Which brings it to about here