Bike Forums - When is a rim's wall too thin?

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- - When is a rim's wall too thin? (https://www.bikeforums.net/bicycle-mechanics/1034610-when-rims-wall-too-thin.html)

RandomTroll

10-29-15 02:50 PM

Quote:

Originally Posted by fietsbob (Post 18277599)

Dental calipers have been mentioned before. Then, you Measure Thickness..

I didn't ask whether I *should* measure but at what thickness should I replace. I already have a more-precise pair of calipers.

rmfnla

10-29-15 04:43 PM

Quote:

Originally Posted by unterhausen (Post 18242848)

the internet says this rim has a wear indicator, but I'm not sure what it is. Maybe a hole in the sidewall?

37k miles is more than I would expect to get out of a rim with rim brakes. I always manage to do something else to ruin them before they wear out, but a couple have been close after more like 10-15k miles.

This, or more likely I change wheels as an upgrade or some other reason...

RandomTroll

10-29-15 07:44 PM

I built my new front wheel with an Alex Adventurer rim. Its walls are 3.5mm thick, 1mm thicker than the Sun CR18's, and that much heavier (I don't mind the weight.)

It comes with a wear indicator, a strip of metal in the brake track, that one is supposed to monitor for when to replace the rim. It's .3 mm thick. My Sun CR18 lasted from 2.5mm to 1. I'm not going to discard this rim when it's 3.2 mm thick (unless it has failed for some other reason).

fietsbob

10-30-15 09:44 AM

Glad you made a decision , at last.

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