Originally Posted by
oldtrekguy
I recently purchased an older (2008?) Specialized Allez from a local bike recycling operation. Aluminum frame, carbon fork Shimano Sora 3300 groupset, Alexrims DA16 wheels. I plan to strip everything off and rebuild as a winter project, as I have a cache of older Campy Mirage/Centaur components.
I am curious about the quality of non-CF frames from the major bike manufacturers. Would a large manufacturer like Specialized use basically the same aluminum frame, and upgrade only the components (from Shimano Sora to Tiagra/105/Ultegra), or doe the quality of framesets improve with the quality of components?
I'm assuming not much to improve with an aluminum frame, but probably significant differences with CF frames. I don't have a scale to measure the weight, but it seems to be fairly light. The tubes are welded, which is a "look" you either like or don't like (I like it).
Second question: the BB is a standard BSA threaded (thank you Lord!). The Mirage BB is a cartridge-style unit. Should I use Part Tools multi-purpose grease on the BB threads, or Permatex anti-seize? I was thinking the anti-seize would be better. Is there a rule of thumb when to use one over the other?
1st ? - One would think they improve with $$$, but also they have improved with time, but it depends so much on the rider. I tried a few early frames and think I loosened a filling riding one and I still have a Vitus 979 as I liked it so much and a grocery getter/library bike is a cheap late 2000 Al frame.
2nd ? - Grease will work fine in all but unusual circumstances, I use a specific aluminum to aluminum zinc oxide anti-seize, Permatex most likely makes one for aluminum/aluminum. These are commonly sold in little tubes for spark plugs.
Your statement on welds - I agree, I have a nice Zurich with noticeably ugly welds and a beautifully fillet brazed custom frame, while the Zurich is a fine ride I try not to notice the head tube welds.