Yes, I know this sounds like a stupid question, but once you try and measure it, it becomes obvious that the wheelbase varies depending on how far back the rearwheel is pushed into the rear dropout.
In my case, I'm attempting to ID a frame by comparing wheelbase (along with head and seat tube geometry) to numbers quoted in a 1940 Claud Butler catalog. As far as wheelbase goes, the models I'm looking at are either 40.5", 41" or 41.125". One could imagine a bike frame could be any of these, depending on the position of the rear wheel. Should I push the rear wheel all the way back and measure from there?
What did Claud do when he made this measurement ?
Thanks - Michael Davies St Louis, MO
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