The Cub's minimum PTO speed is roughly the same as the rated PTO speed for most older tractors (i.e. 540 RPM). You'll be trying to drive the tractor's engine at maximum RPM using the Cub's absolute lowest possible power output.
It would be relatively simple to make a chain drive reduction of perhaps 3:1 or more to slow down the Cub, multiply the torque the engine is producing, and potentially give it the leverage it needs to turn the tractor's engine over at a much lower RPM.
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Today's Featured Article - Show Coverage: Journey to Ankeny - by Cindy Ladage. We left Illinois on the first day of July and headed north and west for Ankeny, Iowa. Minus two kids, we traveled light with only the youngest in tow. As long as a pool was at the end of our destination she was easy to please unlike the other two who have a multitude of requirements to travel with mom and dad. Amana Colonies served as a respite where we ate a family style lunch that sustained us with more food than could reasonably fit into our ample physiques. The show at Ankeny
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