Bob Darrah wrote:

My clock may be off by a few years, but my rotor turns once for 3 revs of the shaft.  And I have a book
that shows how to internally gear it back to 1:1 but I have no idea if it is practical or not.

Bob Darrah

Sorry you are right the 2:3 refers to the lobe flank ratio. Brain fad on my part.

The gear ratio of the 1:2 lobe to flank ratio just happens to be the same.
The gear ratio of the 2:3 lobe flank ratio rotary we know and love is indeed
1:3.


Paul Lamar
 
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