What size Electric Starter
I just use the cheapest Hobbico starter with the little battery in the starter box...
I also have the bigger Hobbico W/a garden tractor battery.
The bigger starter will flip it from a standing start.
With the little Hobbico starter, you have to turn the starter on and then stick it to the spinner nut.
A Sullivan Dynatron with 24 volts will certainly give it a whirl.
Enjoy,
Jim