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Old 07-30-2010, 09:26 AM
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Ghost0 Ghost0 is offline
Motorized Bicycle Elite Member
Join Date: Mar 2008
Location: Bellingham, WA
Posts: 764
Default Re: A new shift concept for the engineers....

Like the patent guy said, "everything has already been invented". Attached are pics of my first attempt at gearing a motorized bike. I too felt this was going to be a simple solution but it turned out not to be the case. Going with a derailleur on the left or right causes problems with a fixed rear sprocket and the want to bump start. But maybe you all can find better solutions to the problem than I was able to come up with.
Attached Images
File Type: jpg 3 Speed.jpg (165.4 KB, 166 views)
File Type: jpg 3spd1.jpg (228.1 KB, 188 views)
File Type: jpg 3spd3.jpg (211.3 KB, 180 views)
Design is easy, execution the hard part.
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