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Old 01-08-15 | 02:12 PM
  #59  
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Campag4life
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Joined: May 2007
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CerveloMad,
If you move forward with epoxy, a couple of tips:
-After years of trying to tame creaking and slipping delrin bushings on their version of PF30...your Foil is a wide shell version of PF30 with smaller bearings...Specialized ended up specing the following Epoxy for their bushings:
SCOTCH-WELD Epoxy Adhesive, Black, 37mL, Duo-Pak - G2499411 at Zoro

It will work just fine and is your best foot forward with one caveat. If you have some clearance to the bushing on one side, perform as follows:

Above is a 20 minute epoxy.

Completely clean the carbon on your BB shell. Use denatured alcohol. Purchase new bushings.

Apply the epoxy to both bushings and shell.

Press in.

Clean up excess residue.

IMPORTANT: within 10 minutes install the crank and set up proper preload. This ensures co-axiality between bore centers such that you get no binding.

Let dry over night.

It shouldn't give you any more trouble. The issue with the Foil is slightly overside BB shell OD which causes the bushing to slip and wear the one side of the BB shell. This is resolved with adhesive. If it doesn't move, it won't wear. Pretty sad that Scott doesn't spec epoxy or suitable Loctite for their bushings from the factory like Specialized finally did.

A last note. Specialized discontinued PF30 for 2015. That says it all. PF30 and the wider Scott equivalent are not a practical BB for the average consumer or bike shop.


Note: if you can find bushings for your Scott with integrated bearings that are captured into the bushing, this is the most robust bushing/bearing subassembly because it removes the opportunity for the bearings to creak within the bushing.

Hope that helps.
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