How to tighten Creo SL chainring?

[etgo]

Guys, how to tighten Creo SL chainring?
Im cleaning my creo yesterday and I noticed the chainring is shaking a little.
I move the chainring left and right and it is really shaking.

Video here:

Watch video-1645699634 | Streamable

Watch "video-1645699634" on Streamable.

streamable.com

 

[kahn]

Guys, how to tighten Creo SL chainring?
Im cleaning my creo yesterday and I noticed the chainring is shaking a little.
I move the chainring left and right and it is really shaking.

Video here:

Watch video-1645699634 | Streamable

Watch "video-1645699634" on Streamable.

streamable.com

Someone with more knowledge will be by soon, I expect. But an allen wrench should work but I don't know the torque specs. Or hit your shop - they should be able to fix that in seconds.

 

[Stefan Mikes]

5 mm Allen wrench, tighten each chainring bolt (in a cross-wise manner) until you feel all the bolts hold. Be careful not to pull the thread. The tightening torque is low, some 5 Nm.
Some people would unscrew all bolts, apply a threadlocker such as Loctite Blue and tighten the bolts again.

 

[TS25]

The tightening torque is low, some 5 Nm.

Why "some"?
Looking at his starting pic of the video, it says "5 Nm".

P.S.: what I really wanted to say is "agreed".

 

[kahn]

Why "some"?
Looking at his starting pic of the video, it says "5 Nm".

P.S.: what I really wanted to say is "agreed".

Some people in Europe are more awake than others! And more awake that the American Pacific Coast!

 

[JRA]

The chain ring bolts to the adapter are not the problem. The adapter itself is loose and rocking on the splined shaft. There normally is a lock ring that tightens the adapter onto the splines but I don't see one there and it looks like it is held on by a snap ring. So I would say there is no way other than perhaps a thicker snap ring to solve this?

 

[Stefan Mikes]

Looking at his starting pic of the video, it says "5 Nm".

As it is so easy to pull the thread on aluminium chainring bolts, I always tighten them "by feeling", re-tightening after the first ride.
I have already managed to pull the thread in the aluminium chainring bolts before.

 

[TS25]

I have already managed to pull the thread in the aluminium chainring bolts before.

Yes, I know, and I appreciate your test sequences in the interest of science and fora knowledge very much.

 

[Stefan Mikes]

TS25: I still own several steel chainring bolts, and really mastered the chainring replacement! You are in the Fora too rarely to even notice that

 

[etgo]

The chain ring bolts to the adapter are not the problem. The adapter itself is loose and rocking on the splined shaft. There normally is a lock ring that tightens the adapter onto the splines but I don't see one there and it looks like it is held on by a snap ring. So I would say there is no way other than perhaps a thicker snap ring to solve this?

Yes there is no problem with the adapter.
Its the splined shaft and I don't see any lock ring for the spline.

 

[JRA]

It would be a big help if another Creo SL owner would check theirs as a comparison? I know there are some on here.

 

[etgo]

Found it.. theres a screw at the back.

Many Thanks guys...

 

[JHShaw]

Many thanks- I noticed noise while cranking, a bit of looseness with the chainring. After checking torque on numerous bolts (chainring, crankarm, motor mounts), I saw this posting, torqued up this screw which had escaped my scrutiny, and the problem is solved. Live and learn.

 

[SwimBikeRun]

Mine would come loose every few hundred miles. I ended up using blue threadlocker. However, My SL spends 99% of its life on trails and service roads. Now if I can figure out a way to keep those futureshock screws from backing out, I'd be happy.

 

[Amoto65]

So glad I saw this its been puzzling me for ages.