Hello folks. I got a 32H rim with a crack in.
The center hole is the valve hole. I wasn't going to use it but then I realised it's a double walled rim where those holes with the cracks aren't holes that take any stress from spokes/nipples.
One problem might be that I plan to have my tyres at a pretty high pressure, around 80 PSI. Over time that crack at the left will spread to the next hole, but it should stop there?
Is this a totally unusable rim, or is this a common thing that won't really matter?
I looked at all the eyelets under a magnifying glass and only one eyelet had a very small split at each side, so I have marked that eyelet to be laced on the non-drive side to hopefully stop that split spreading.
I have seen various posts on various forums all saying different things, but most were talking about split eyelets, not cracks to the metal like in the above image.
Front or rear? Mountain or road bike? Got a dental plan?
I daresay it'd be fine, it's the cracked eyelet that'd concern me, but unlikely to be a sudden catastrophic failure I suppose.
Are you likely to be doing this on it?
Are (your) cracked teeth still usable?
I wouldn’t risk it, especially at high pressures
It's going on a rear with full suspension, only riding on the roads.
It can go front or rear but I was going to lace it as a rear to take stress off that one eyelet by having it on the non-drive side.
Recently found a crack in my rear rim. Sidelined the bike until I could replace it. Even on the road I just don't think it's worth the risk.
It's tempting to say it's not stressed there because it's double walled. But it wouldn't have cracked if it wasn't stressed. Little cracks, maybe, that one's grown and probably growing, I would not.
It’s not just those cracks though - you mention there’s a crack round an eyelet. Not worth lacing that damaged rim into a new wheel build - just get a new one. You can often find bargains on new rims if you look around. Wtb were on offer a while back in a few places, although I haven’t had the need to look recently.
I'd a wheel once that was cracked all the way round like that except worse, well was when my fat arse was finished with it! I'd guess it started something like the OP. the way it failed wasn't immediate, but when it started to go, it wobbled out of true to extremely buckled in short order.
Why would you? If i saw that crack on a wheel id probably carry on till i knackered it, but i definitley woudlnt bother building it up when its probably a £30 rim....
Uuuuuuuu crazy...
I have a rim in a very similar state that I have no intention of using ever again. As mentioned above, the cracks may well spread further. The rim walls may then be bulged further apart especially at high tyre pressures. I only discovered my predicament when repairing a broken spoke and then trying to true the wheel. For some reason the rim displaced to the left and right in the same region at the same time- the walls were being forced apart.
Thanks guys, I'm not going to risk using it.
Thank **** for that - common sense prevailed after having to consult the world wide web once more...