Rear wheel rim problem

[guerney]

I'm starting to think my Chinese brake pads have contributed greatly to the problem.
The wheel has deteriorated in the last week so I've ordered a new cheap wheel off Amazon.

These? Added to my shopping cart but then thought "Nah, they'll wear out my rims faster".

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Genuine Clark pads are reputedly easier on rims, but I've only ever used Clarks this millenium so can't compare. I haven't tried my new Clark rim brakes with replaceable pad inserts yet, but will soon.

January (with damaged spoke nipple):




Now:

 

[thelarkbox]

Fwiw i cycled along with nice cream coloured tyres for a couple of years before fitting the conversion kit,
It didnt take long post kit fit for the black brake block and rim? debris to stain my once clean looking tyres!! If the usual black colour I would have been oblivious to just how significant the difference a motor made.

 

[guerney]

Perhaps try over inflating only a little extra, say 20psi extra to test and then let the pressure back down to normal.

Thanks, I'll try that when I get around to replacing the wheel. I may film the pressure guage on my track pump and the rim, in case there's a chance of something interesting occurring. Might be dull, so probably not.

I have experienced rim failure on a number of occasions. In all cases, I got a warning when braking from the brake lever pulsing due to the rim bulging outwards in one spot. In all cases, I just let some air out and the rim got me home. The place where the rim is joined, usually 180 degrees opposite the valve is a vulnerable place. I have on one occasion had a rim failure before the groove wore away. Some people claim that the groove actually causes a weakness in the rim. The Ryde/Rigida rims that I like have no groove but holes appear when they are badly worn but I have seen them bulge out before this.

You've had a number of rim failures and didn't die even once?

 

[sjpt]

I've been lucky. Just one catastrophic rim failure, complete buckling of wheel. But the bike was sitting in the garage at the time. It wouldn't have been much fun if I'd been riding.