Posted by Wardner on February 16, 2009 at 22:06:49 from (4.154.245.40):
In Reply to: Re: Gears posted by Farmall Bob on February 16, 2009 at 18:45:48:
Bob,
The gear for the 650 is a standard 5 pitch, 13 tooth spur gear. I have forgotten the pressure angle but it might be 14 degrees. That is also standard. The bore is bigger than I want so my bearing supplier will order it without the bore. The smallest 5 pitch gear is 11 tooth but that makes the diameter too small. It can't be any smaller than roughly the diameter of the CharLynn geroter hydraulic motor. The motor is an H series with the largest displacement in its series for slower speed. It has way more torque than I need. Shifting will be done with a small bore - small stroke air cylinder. That is one of the reasons I put the Bendix air compressor on the belt pulley gearbox. The small sliding gear will mesh with 1st/rev gear on the mainshaft when it, as well as the rest, are in their neutral locations.
I am not working on it now as the tractor takes too much room in my shop. I am working on smaller projects now.
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