Planetary gear ratios May 03, 2010 02:42PM
I have found a few sets of franklin planetaries and I am trying to determine the final drive ratios. The SUN gear has 18 teeth and the RING gear has 54 teeth, can I determine the final drive ratio from this? I need a set of planetaries for a SS diesel I am guessing with a ratio of 4:1. any help is greatly appreciated.

Thanks
Adam

Re: Planetary gear ratios May 03, 2010 07:19PM
1 + 54/18



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Re: Planetary gear ratios May 03, 2010 11:01PM
Ring gear / Sun gear + 1 = Ratio

Re: Planetary gear ratios May 04, 2010 04:03AM
thanks for the help! What are these planetaries worth if in good condition? are the planetaries needled from the factory of something i need to do?

Thanks
Adam

Re: Planetary gear ratios May 04, 2010 11:24AM
I have a set of eatons that have same wheel bolt patten as the franklins that I would sell for 1200.00 937 346 7960

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