Replacing Old Suntour XCM Crankset
04-16-22, 05:54 PM
#1
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Thread Starter
Replacing Old Suntour XCM Crankset
Hi, I have a 1989 Schwinn Impact MTB, and a very experienced mechanic who's worked on bikes for 30+ years tells me it's time to replace the crankset. I want to keep the vintage "silver" look.
Can I replace my old Suntour XCM 170mm 48-38-28 triple with either
Can I replace my old Suntour XCM 170mm 48-38-28 triple with either
- a new Stronglight 170mm 48-38-28 or
- a new Sugino XD2-500T 170mm 48-36-26?
04-16-22, 06:15 PM
#2
Bikes are okay, I guess.
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Do you need the whole crankset or just rings? Rings might be cheaper.
04-16-22, 06:49 PM
#3
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Whole crankset.
04-16-22, 09:06 PM
#4
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Chain line might shift and sometimes a spec BB will be needed. Andy
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AndrewRStewart
AndrewRStewart
04-17-22, 05:03 PM
#5
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Thanks so much!
04-18-22, 05:50 AM
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04-18-22, 07:27 PM
#8
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My mechanic referred to bearings, so yes, maybe the BB taper.
04-18-22, 07:47 PM
#9
Senior Member
At our bike Co-op, we sell replacement bottom bracket spindles and a complement of balls for $5. For someone good, refreshing the bottom bracket is a 30 minute job. In the unlikely event that the cups are pitted, that would cost you another $5.
