Clavicula BB for Colnago 60
Posted: Tue Nov 01, 2016 2:39 pm
Before I get flamed for not using the "search" feature, I figure that I should thrown in a pre-disclaimer that I did but didn't get the answer that I was looking for.
I'm in the midst of building up a C60 with a clavicula classic crank. I have already bought and pressed in the cups, added the spacer to the drive side and tightened on the non-drive side arm.
My dilemma lies in the fact that when I tighten the pre-load cap onto the drive side, it compresses the crank to a degree that I get no ability to hand-turn the crank as its gets fully seized. Also, it appears as though the inner part of the spider gets dangerously close to rubbing the outer edges of colnago's Threadfit82.5.
I'm sure the argument can be suggested for me to add spacers to driveside crankshaft or even allow a little play in the shaft but it would seem too half-assed that THM design a faulty bb cup begin with.
Which leads me to the idea and self-fingerpointing that I've done something wrong. I'd like some suggestions from anybody who has built a C60 with a set of clavicula's.
Please chime in to tell me where I might have goofed things up.
1) Press in THMs pressfit Shimano cups into Colnago's ThreadFit82.5 (cplt)
2) Pass spacer through crankshaft into drive-side of the crank (cplt)
3) Insert crank into frame and safely tap/hammer crank so crank rests flush with frame with no gaps btw driveside crank and BB cup (cplt)
4) Insert non-drive crank-arm into star-lock (cplt)
5) Screw preload cap and tighten allowing crank compression (cplt)
6) Tighten both no-drive crank-arm securing bolts (cplt)
This should have successfully installed the crank...but something is terribly wrong.
I'm in the midst of building up a C60 with a clavicula classic crank. I have already bought and pressed in the cups, added the spacer to the drive side and tightened on the non-drive side arm.
My dilemma lies in the fact that when I tighten the pre-load cap onto the drive side, it compresses the crank to a degree that I get no ability to hand-turn the crank as its gets fully seized. Also, it appears as though the inner part of the spider gets dangerously close to rubbing the outer edges of colnago's Threadfit82.5.
I'm sure the argument can be suggested for me to add spacers to driveside crankshaft or even allow a little play in the shaft but it would seem too half-assed that THM design a faulty bb cup begin with.
Which leads me to the idea and self-fingerpointing that I've done something wrong. I'd like some suggestions from anybody who has built a C60 with a set of clavicula's.
Please chime in to tell me where I might have goofed things up.
1) Press in THMs pressfit Shimano cups into Colnago's ThreadFit82.5 (cplt)
2) Pass spacer through crankshaft into drive-side of the crank (cplt)
3) Insert crank into frame and safely tap/hammer crank so crank rests flush with frame with no gaps btw driveside crank and BB cup (cplt)
4) Insert non-drive crank-arm into star-lock (cplt)
5) Screw preload cap and tighten allowing crank compression (cplt)
6) Tighten both no-drive crank-arm securing bolts (cplt)
This should have successfully installed the crank...but something is terribly wrong.