Sram xo1 gxp crank install fail

[THATmanMANNY]

Okay. What is going on?

So It's a 73mm BB and I didn't think I needed to install the spacers but installed new bottom bracket with spacers. Seem to fit better. But the crank won't move and grinds on the bottom bracket cup where my finger is. There seems to be more room I need to space out because there is still left and right play (sliding) when pushing/pulling center of crankset.

WHY?
Something with my crank?

Pretty dumb right now

 

[THATmanMANNY]

No Spacers and it looks like it sticks out too much so I installed the spacers.

GRINDING WHERE MY FINGER IS. It looks like the torq bolts of spider is rubbing the BB cup.

 

[Magic]

73mm BB? I think Shimano says one spacer on drive side for 73. Two on drive, one on non-drive for 68mm. If SRAM is any similar that is.

 

[THATmanMANNY]

PIC OF LABEL ON CRANK BOX

168 Q factor

Spindle length measures about 114mm just fyi

 

[qclabrat]

which BB?

 

[THATmanMANNY]

It's a SRAM GXP team outboard threaded BB

 

[THATmanMANNY]

73mm BB? I think Shimano says one spacer on drive side for 73. Two on drive, one on non-drive for 68mm. If SRAM is any similar that is.

Page 14. No spacers on 73mm BB

https://sram-cdn-pull-zone-gsdesign...v_c_mtb_cranksets_and_bottom_brackets_eeu.pdf


I can probably get the axle sliding play out by really tighting the crank arm but the GRINDING wtf?

 

[qclabrat]

does the drive side need either spring or Teflon spacer between the crank and bearing cover

 

[THATmanMANNY]

wtf.... my god I am dumb. I swear I've installed GXPs before and noticed no gap.
I am that first commenter 'Vladimir'
Let's find out..

http://trailtiretv.blogspot.ca/2012/12/srams-gxp-bottom-bracket-how-it-differs.html

 

[THATmanMANNY]

OMFG lol
Conclusion
no spacers
tighten hell out of the crank arm bolt
THAT gap on the drive side is perfectly normal

/close thread

 

[Aresab310]

This actually is normal and my experience too, there are a couple of threads mtbr.com if prefer to search. Here is an excerpt of one:

"The spindle bottoms out on the inside of the non-driveside bearing on GXP systems, so the drive-side crank doesn't need to touch the BB. You can put a 2.5 mm spacer in if ya want, but it doesn't make a difference. Shouldn't be any play unless your non-driveside arm isn't tight enough or your BB is worn out.

Why are they like this? So they work with e-type derailleurs on 73mm shells.​

 

[jdgang]

Yes there is suppose to be a gap on the drive side. that fucked with me for both of my bikes with a GXP BB. I wouldnt tighten the hell out the crank arm bolt. This cause my drive side bearing to start getting crunchy only after a few months.

 

[Dave Taylor]

Read directions first

 

[jdgang]

Now why would I want to read directions? That only complicates things