No identifiers on main mechanasim. Small pivot arm has No. 30146

A home owner from Cherry Hill, NJ says:

Can you identify these cranks? They look like the Caradco 39028 on your site, except that the crank arm is longer. The 9 1/2" measurement on your site looks to be 11 1/2" on my mechanism. One of the attached pictures shows the crank mechanism wit a tape measure to show relevant measurements.

Thanks in advance for checking your stock for a crank that would work. Bob 

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Emily from SWISCO responded:

Take a look at our 39-013 and 39-014. It has a 13-1/2" long arm when measured from wheel center to gear center. This looks like it would be a closer fit for what you need. Let us know what you think. 

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