Is this suspicious? Strange damage after a repair.

I had changed a flat tire on Friday after work and found a broken spoke.  I went from work to my LBS (local bike shop) and they took off the wheel, the tire, and replaced the spoke and trued to wheel.  From there I went straight home (about 3 blocks).  The bike sat untouched on Saturday and Sunday.  Monday morning I started my ride to work and made it about a mile when the wall of the rim bent outward rendering the bike un-rideable.  Was this a coincidence or do you think my LBS did something while fixing my wheel that damaged my rim?   It's a 2016 Specialized Crossroad, so it's not particularly fragile.  I have ridden almost every day since I got it two years ago.    Opinions please.

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Permalink Reply by dav on August 27, 2018 at 1:04pm

Permalink Reply by Paul Lazzaro on August 28, 2018 at 12:55am

I've had a wheel develop a crack due to improper/uneven spoke tension over a year or so of regular riding.  The fact that you had a broken spoke (and didn't notice it for who knows how long) suggests the tension might not have been right for some time.  I can't imagine what the LBS could have done to make this happen so quickly.

Permalink Reply by Matt Talbert on August 28, 2018 at 3:06am

Are the wheels on your bike the stock wheels that came with the bike? In my experience stock wheels aren't the best and do not have the greatest longevity. I am sure others have a different experience, but I can only attest to my own. I have 3 bikes, all of which have a new set for one reason or another (accidents, wear down, defects)

Are you comfortable sharing the name of the shop? I am sure there was no malintent. I find when I go back to the LBS after issues with repairs they stand behind their work and take care of you.

Permalink Reply by David P. on August 28, 2018 at 4:18am

You presumably asked for a spoke replacement and that's what you got, but it looks like what you really needed was either a rebuilt wheel or a rebuilt wheel with a new rim. 

Permalink Reply by Matt Talbert on August 28, 2018 at 4:44am

The cost of rebuilding the wheel might be the same or very close to the cost of a brand new wheel.

Permalink Reply by Mike Schwab on August 28, 2018 at 5:13am

Tthe rim surface wears from braking, especially if ridden wet.

Permalink Reply by Tom A.K. on August 28, 2018 at 12:51pm

They probably followed the usual  spoke replacement procedures. 

Install, true, and max tire pressure. 

Your rim wall may have been worn down from braking friction.

Your safest solution would probably be rim replacement. 

Permalink Reply by Doug Haynes on August 28, 2018 at 11:54pm

I think a better place than an internet forum to ask about your "suspicious" rim damage is the bike shop you feel may have caused it...

Permalink Reply by dav on August 29, 2018 at 1:07am

Don't ask bike people about bike stuff on an bike forum?  Please link me to the list of Doug Approved Topics.

Permalink Reply by Jim Reho on August 29, 2018 at 7:28am

I'm no expert, but from the photo it looks like that rim had become weak and was on the way out.  The broken spoke may have been more a symptom of a problem than a cause.  

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