View Single Post
Old 10-18-16 | 04:43 PM
  #6  
maddog34's Avatar
maddog34
Senior Member
10 Anniversary
Community Builder
Community Influencer
Active Streak: 30 Days
 
Joined: Jul 2015
Posts: 7,362
Likes: 3,217
From: NW Oregon

Bikes: 1982 Trek 930R Custom, '91 Diamondback Ascent w/ XT, XTR updates, Fuji Team Pro CF road flyer, Specialized Sirrus Gravel Convert, '09 Comencal Meta 5.5 XC, '02 Marin MBX500, '84 Gitane Criterium bike

Originally Posted by phteven
I'm overhauling a 1988 Trek 400T, and I'm wondering about some of the headset. The adjustable race and lower headtube race look fine, but the upper headtube and crown race have rough edges along the bearing groove which are a coppery colour, rather than a smooth steel groove. Photos aren't great but I think they show enough. It doesn't seem to be false brinelling.

Thanks!

https://imgur.com/a/ilzPk
REPLACE it... it's already through the hard-chrome, and will just get worse... when chrome is applied, the metal is first plated with copper, then chromed/polished.... and it's evident in the pics that the chromeis gone from the bearing surface of the top race... REPLACE it.
maddog34 is offline  
Reply