Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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Anytime you ride a temps well below freezing, you have to factor the effects of water freezing. It can happen in cable housings, RD pivots, freewheel/freehubs and even between chain plates. If water can wick in, it will, and if given an opportunity to freeze will.
Your choice of lube can play into this or prevent it, since some prevent water from wicking in or "wetting" metal, and others don't.
One other thing I've discovered riding my aluminum commuter bike in very low temps, is that the difference in the thermal expansion/contraction property of aluminum vs. the 4 feet of stainless steel cable running from the downtube to RD is enough to change the RD trim slightly messing up shift response, or causing some auto-shifting at times.
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