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Unread 22-12-2003, 11:36
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Joe Johnson Joe Johnson is offline
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Re: Engaging Gears Perpendicular to Shaft Direction?

Have to done a careful sum of the moments calculation about the axis of rotation of the input shaft?

I am suspicious that the drive link can stay engaged with just the aircylinder.

I am probaby missing something because my mind is telling me that it must be near the wheels (or else why would I see so much chain? -- I typically only use chain toward the end of the drive train). But, I think you made some sort of statement that had this up high in the geartrain. So... ...I am confused.

But... ...either way, here my thoughts.

#1 I alot of careful thought has gone into this. Careful thought is never wasted.

#2 My brain keeps coming back to, why have the engage/disengage gears at all? You have the chain sprockets. Why not just mount the gears and their shafts on the pivoting link, keep the gears engaged 100% of the time and just pivot the whole mechanism to allow the "high gear" sprocket or the "low gear" sprocket to engage the chain? I think your mechanism gets simpler, your gear loads and forces are more easily managed, and the chain takes all the abuse (which chain is quite happy to do -- chains love abuse).

Just my 2 cents worth.

Joe J.