Originally Posted by
UniChris
Of course there's one on each side!
Every mention I've made have them, and the manufacturer quote accompanying the picture has been pluaral - spacers.
The picture you posted has only a single spacer. Where is the other one?
I’m also having a problem understanding just how this spacer would work. If the bore is expanded because of installation…not something I concede is happening….the spacer would have to be thinner each time the crank is installed to allow the crank to move further up the spindle to take up that expansion. Are you saying that the expansion of the bore is predictable? In other words, if the bore is Xmm in diameter on the first installation, is it X mm + Ymm wider on the second installation? If this were true, the crank fit should get sloppy each time the crank is installed and removed until such time that the crank would be come unusable. And that should happen in fairly short order. A few installations and the crank should be discarded even if you changed the spacer.
If the bore expansion
isn’t predictable, i.e. a random event, the spacer would need to be either trimmed to fit or would need to be available in thousands of sizes. Trying to decide which one of those thousands of spacers you’d need would be trial and error.
And just installing the crank would require a different spacer.
If you want to do dueling pictures, here’s an exploded view of the SKF bottom bracket offered by
Rene Herse Cycles
There are no spacers on the shaft in that picture. If you go to the website, there is a picture of the bottom bracket with no spacer on the spindle shaft.