Breezer Thunder, 1975 Sekine SHT 271, 1975 Sekine SHS SunTour VX Group Sugino Mighty Tour, tubeless
Discussion Starter · #1 ·
My friend just got a Cannondale CAAD2 F900 with a Headshok Fatty D. Seeing what I thought was boatloads of rust mixed in with the grease on the bearing races, I immediately did the unthinkable and tore it down to bits (including all the races and roller bearings). Looks like the imitation pepperoni...er... elastomer has perished.
Ignoring the fact that the fork is(was) in pieces, how screwed is this fork? The spring inside the fork is blue, and feels to be about the correct stiffness for my friend.
The damper was quite anemic and very noisy so I ripped it open (got damper oil squirted all over the place because there somehow was high pressure air inside?!) and put in Motorex 2.5wt fork oil (CST 15). The noise is gone but the damper still feels anemic.
Am I right in assuming that the elastomer also provided some damping and a thicker oil is required? I believe the original oil was Golden Spectro semi-synthetic 5WT oil with a cst of around 15 or 16, so Motorex 2.5wt should be close.
BTW, The fork has been thoroughly cleaned and put back together (I made sure all the races went in the exact same way as from the factory). But I'm willing to take it apart to either change the damper oil or spring some other day.