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Old 06-23-09, 05:53 AM
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You don't need a new crankset, just take off the small ring of the 105 and get a shorter BB. But, Octalink is going bye bye quickly. The BB's are overpriced,under engineered, and you have only one choice of vendor, Shimano.

In all honesty I'd try to get rid of the crank and get a design that has been around awhile, like a tapered design. The BB's last longer, and will be available forever. Double cranks are available by the bucketload on ebay. I saw this one for instance for $50 and free shipping.

Buying a new Octalink BB and taking off the small ring is your cheapest option in the short run. Getting a square taper crank and BB may cost a little more now, but will save you in the long run with longer lasting, and less expensive BB's. That's my biased opinion about it.

Garthr is offline