Showing posts with label reassembly. Show all posts
Showing posts with label reassembly. Show all posts

Monday, August 5, 2024

Cleaning and regreasing of Campy crank

Wheels of Happiness

I met Mario Toledo, my best mechanic,  yesterday at a mountain trail road and hastily I consulted the campy crank, (the bearing of which was just replaced)  which has not be been rotating smoothly.  He advised that I should disassemble, clean, and regrease.

Which I did today.  Removal of the 10mm crank bolt (and reinstalling is a challenge).

True enough the crank axle is dirty and the non drive bearing is a little bit sticky.  So I cleaned the crank axle the bearing, and the crank shell. Generously regreased the bearing and the axle with synthetic lighter grease.   How could they all be so grimy after just three months?   Its good that the bearings were still in good shape.

Now the crank now turn faster and smoother.  I must have lost 10-15 watts with the dirty 

Thursday, May 30, 2024

Correcting my error in reassembly of the Fulcrum

Wheels of Happiness

Being so eager to implement a new idea in bearing regrease, I disassembled again the Fulcrum.  When I reassembled this, I could not get the WS turn freely and  had difficulty in adjusting the pre load.  I though it was simply a matter of adjusting the tightness of the cones on the hubs.   But no matter....

This post reviewed the YT.  It was possible that I got the bushing  replaced the wrong way, facing down instead of facing down.   And so I discovered that I placed the bushing wrong, facing up, so it always slipped down at the opposite site, and was not held by the compression ring.  

I got this right this time, the compression ring stuck put, the bushing did not fall down, the assembly was deeper, rather than out.   And when I tightened the pre load, it was marvelous.  The wheel turned freely and spun well