Spokes

[martint235]

I honestly don't know how washers will help - unless your LBS uses really naff spokes which don't have a proper "elbow". What is more likely to help is if the tensions are now reasonably even and high enough.

I've given my Open Pros on 105 hubs (built by me to Roger Musson's "recipe" - when I was still a very inexperienced wheelbuilder) all kinds of abuse and never broken a spoke.

BTW - "spalling" is what happens to stone & brick when water gets in and freezes and cracks off the surface layer.... nothing to do with metal. I believe what accountantpete is thinking of is "galling".

Yeah I'm not sure what good a washer will do either as it won't stop the spoke coming into contact with the hub unless it's just to stop the end of the spoke coming off (but I'm sure my LBS doesn't use spokes that are THAT bad).

This is why I think I'm due a new hub soon. Might switch to a black 105 just for a change.

 

[accountantpete]

BTW - "spalling" is what happens to stone & brick when water gets in and freezes and cracks off the surface layer.... nothing to do with metal. I believe what accountantpete is thinking of is "galling".

See Here

 

[spandex]

What end of the spoke is braking? and is the same each time?

 

[martint235]

What end of the spoke is braking? and is the same each time?

It's the hub end and yes it's been the same spoke each time. There doesn't appear to be anything wrong with the hole on the hub to my eyes and touch wood the spoke that's in there has now done over 300 miles so it may be ok.

 

[gwhite]

It's the hub end and yes it's been the same spoke each time. There doesn't appear to be anything wrong with the hole on the hub to my eyes and touch wood the spoke that's in there has now done over 300 miles so it may be ok.

If the break is always at the Hub end then the cause is likely to be fatigue. Lack of de-stressing and uneven tension would cause this.

 

[spandex]

If the break is always at the Hub end then the cause is likely to be fatigue. Lack of de-stressing and uneven tension would cause this.

And or the holes in the hub are too big for the spokes which is more common then you think. The only thing you can do is see if 13g spokes (13g-14g single butted)

Or

Use spoke washers that will take up the play from the spoke head and the flange