Should I worry - cracks around spokes?

[ishaw]

Re:

Thanks all. The spoke tension isn't tight, in fact I'd go as far as to say not tight enough. It's been hung on a wall for 4 years not used since the wheels were rebuilt, I ducted it down today and spotted them. Rather annoying indeed. Looks like it deserves a rebuild, might crack out the nos m950 hub to match the rear then. Speaking of rear, I didn't notice anything there but the spoke tension was pretty loose.

I reckon the shop that built them up for me didn't have the right man for the job, but didn't want to turn away the money/job.

 

[M-Power]

Re:

Wonder if anybody loosens wheel spokes a turn or two each if a bike is being laid up for a long time. :?

 

[mattr]

most of the instances I've heard of are with CD rims, so maybe it's something in the anodising

I *heard* from someone connected to mavic that it was a combination of tolerances and slightly too tight/too short eyelets over stressing the rim around the eyelet. Don't know how much truth in that. But it would make sense.

 

[mattr]

Re: Re:

Wonder if anybody loosens wheel spokes a turn or two each if a bike is being laid up for a long time. :?

If the wheel is built correctly it shouldn't matter. There's no fatigue cycles, and material creep would be so slow you'd need to lay it up for decades to make a difference.

Unless you've got the spoke at 20% over tension for the rim........

 

[M-Power]

Re: Re:

Wonder if anybody loosens wheel spokes a turn or two each if a bike is being laid up for a long time. :?

If the wheel is built correctly it shouldn't matter. There's no fatigue cycles, and material creep would be so slow you'd need to lay it up for decades to make a difference.

Unless you've got the spoke at 20% over tension for the rim........

Agreed. I have stored premium wheels for 30yrs with no issues but just wondered if this had been tried. I used to loosen the bolts a bit on a bike when it was being layed up for a good while.

 

[FluffyChicken]

What could go wrong.

(the guvnors wheel, somewhere near coniston, some years back, think it's one of them Mavic wheelsets they made.)

 

[Silvergoat]

Re:

Have you removed the tyre, tube and tape to check the hidden parts of the rim?

This is what I found one time...

 

[retrobate]

most of the instances I've heard of are with CD rims, so maybe it's something in the anodising

I *heard* from someone connected to mavic that it was a combination of tolerances and slightly too tight/too short eyelets over stressing the rim around the eyelet. Don't know how much truth in that. But it would make sense.

More info here

https://www.sheldonbrown.com/brandt/anodized-rims.html