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Tandem left side crank problem

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Tandem left side crank problem

Old 07-11-05, 02:51 PM
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Tandem left side crank problem

I have an older entry level Univega Sport Touring tandem. The left rear stoker (non-drive) crank arm fits over a square taper spindle. The hole in the crank arm has rounded shoulders, causing the crank arm to be out of alignment with and forward of the drive side crank arm - not perfectly 180' opposed.

The crank arm is a press fit into the chain ring that couples it via the chain with the captains chain ring, so I cannot replace the arm without replacing the chain ring as well. I was thinking maybe a right side spider arm and single chain ring (BMX crank?), but the pedal thread wouldn't be right.

Can anyone offer a fix/solution/suggestion for this problem? does anyone have a spare 170mm tandem left crank arm/chain ring assembly they can part with, or perhaps a left side set?

Regards,

John D.
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Old 07-11-05, 04:29 PM
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Ya might find something to help you out on this page of Sheldon's >>
https://www.sheldonbrown.com/tandem-build.html
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