Problems installing a GXP crankset
 

Hopefully I’m doing something stupid and it’s an easy fix but I’m having one hell of a time. I have a SRAM S900 crankset. Up until recently it had a Quarq spider on it. The Quarq died and I purchased a new one, Quarq removed the spider and sent the crank arms back to me.

So, I purchased a new Origin 8 spider and installed it on the crank arms. Now when I go to install it I’m having a problem with rubbing at the bottom bracket. I’ve tried several different combinations of spacers and the wavy washer.

Any thoughts?

https://cimg7.ibsrv.net/gimg/bikefor...6e6d37be5.jpeg

What frame ? And what BB, pressfit or threaded ?

Fuji Norcom Straight. Press fit.


https://cimg2.ibsrv.net/gimg/bikefor...120165e8e.jpeg
https://cimg3.ibsrv.net/gimg/bikefor...195e4b342.jpeg

I just removed the crankset off of one of my road bikes to see if it would install without any issues. It works perfect.
https://cimg7.ibsrv.net/gimg/bikefor...ddf078685.jpeg
https://cimg8.ibsrv.net/gimg/bikefor...a00cb1732.jpeg

shouldn't the silver part of the spider be flush with the bolts?
https://cimg4.ibsrv.net/gimg/bikefor...a99730a770.jpg

You’re exactly right. This spider just won’t let that happen. Thank you!


https://cimg1.ibsrv.net/gimg/bikefor...b73112e06.jpeg

Figured out that the crank cutout (indention) on the outside of the crank wasn’t wide enough for the crank arm. I did some quick grinding and it works like a charm. I’ll smooth it out and paint it later on.


https://cimg7.ibsrv.net/gimg/bikefor...3bfe0b24c.jpeg
https://cimg8.ibsrv.net/gimg/bikefor...d8941b7f2.jpeg
https://cimg9.ibsrv.net/gimg/bikefor...8d48c2d21.jpeg

All done.
https://cimg6.ibsrv.net/gimg/bikefor...f6556f2bb.jpeg
https://cimg5.ibsrv.net/gimg/bikefor...4a09c199a.jpeg

Just to clarify, this was an issue with the origin8 spider? And you ground it to make room for the crankarm to sit more inboard?

Yes, it didn’t take much.