Changing a chainring
10-15-11 | 02:58 PM
#1
Thread Starter
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Joined: Jul 2011
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Changing a chainring
Right now I have a Truvativ Blaze 32T single speed chain ring and I would like to replace it with a Raceface 38T 104mm single ring. Would this be possible because of the difference in name brands or do I need to buy a Raceface crankset to do this? Thanks for any help.
10-15-11 | 03:31 PM
#2
Senior Member
Joined: Aug 2005
Posts: 33,657
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From: Pittsburgh, PA
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
If the bolt circle diameters and number of bolts are the same, the chainrings should substitute with no problems.
10-15-11 | 04:22 PM
#3
Happy go lucky
Joined: Aug 2011
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From: Illinois
Bikes: 2010 Nagasawa (Track), EAI Bareknuckle (Track), Custom Jonny Cycles (Track), 90's Eddy Merckx (Road), 2002 Colnago Tecnos, 200? Felt F60 (Road), 1992 Schwinn Paramount Series 3 (Road)
There are a small handful of things to worry about concerning chainrings. I know nothing of Raceface or Truvativ blaze but guessing HillRider must already know they're compatible.
1. The BCD (bolt circle diameter).
2. The width (1/8", 3/32")
3. Whether it has pins and ramps for shifting or not (SS rings won't).
I think that's about it?
1. The BCD (bolt circle diameter).
2. The width (1/8", 3/32")
3. Whether it has pins and ramps for shifting or not (SS rings won't).
I think that's about it?
10-15-11 | 04:46 PM
#4
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From: Warwick, UK
Bikes: 2000-something 3 speed commuter, 1990-something Raleigh Scorpion
I don't think it's very likely, but if there's any 'dish' to the chainring, the replacement should match it in order to preserve the chainline.
