Dogma disc...head scratcher

Discuss light weight issues concerning road bikes & parts.
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Lewn777
Posts: 863
Joined: Thu Mar 09, 2017 5:35 am

by Lewn777

Eliminate seatpost/saddle by standing up - does it still make the noise?
I doubt BB after 4 months with threaded BB.
How about:
-old chain?
-out of alighment RD?
-jockey wheel bearing randomly died?
-loose free hub/free hub has too much play/not properly tightened freehub?
-cleats?
-dirty dropouts?

morrisond
Posts: 962
Joined: Thu Mar 25, 2004 8:34 pm

by morrisond

What about your pedals? Lube the springs and make sure there is tension in them.

That has been it for me a few times.

by Weenie


ChiZ01
Posts: 331
Joined: Wed Jan 01, 2014 6:20 pm

by ChiZ01

check your rear wheel spoke tension

sfo423
Posts: 587
Joined: Fri Dec 22, 2006 6:12 pm
Location: San Francisco

by sfo423

I pulled the hanger; clean & re-lube
I pulled both rear dropouts; clean & re-lube
I pulled the der; cleaned bolt, re-bube
Tightened cassette (was tight)

Its 90% better now. When looking at the shifting, I can see that on some of the cogs the back spin can get 'crunchy.' I'll play a bit more w/micro-shift when I have time. But, it does shift well (that was never the issue, but seems that it is a contributor to the sounds).

parajba
Posts: 613
Joined: Tue Oct 28, 2008 9:00 pm
Location: London, United Kingdom

by parajba

Out of the saddle only?

Check that the FD is not touching the big chainring (not the chain, but the chainring). Sometimes it’s mounted a tad too low.

sfo423
Posts: 587
Joined: Fri Dec 22, 2006 6:12 pm
Location: San Francisco

by sfo423

FD is clear. Speaking of the FD, I'm yet to throw a chain w/eTap. Maybe I should buy a lottery ticket?


parajba wrote:
Fri Sep 13, 2019 12:32 pm
Out of the saddle only?

Check that the FD is not touching the big chainring (not the chain, but the chainring). Sometimes it’s mounted a tad too low.

wilwil
Posts: 372
Joined: Thu Sep 23, 2010 5:47 pm

by wilwil

Not familiar with Dogma set post clamp but if its anything like a C64 you might need carbon assembly paste on the seat post. My seat post clicked with every revolution when Im seated.

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