I bought the gear reduction starter from Goldberg for my MH44. The tractor was converted to 12V in the 70s. The 6V starter on 12V cranked the engine over fast, but was very noisy and banged hard. Based on my experience with it, I am totally sold on the gear reduction starters for hard cranking engines The starter does not bang in at all and it is so quiet that you can barely hear the engine crank. The 6V starter running on 12V cranked at 300 RPM, this one cranks at 200 RPM. I do not know what a 6V starter would crank at and would be interested in someone posting that. The original starter was an Autolite.