oldjohnno Posted Sunday at 05:21 AM Share Posted Sunday at 05:21 AM I have a recurring issue with the rear (tubed) tyre becoming partially unseated. There's no problem with getting it to seat initially - a bit of lube, inflate it to 60 or 70 psi and it pops on nicely, all the way around. The problem occurs after I deflate it to my normal pressure (4 psi) and ride it. A section of the bead slips off its seat, about 250mm in length. I can reseat it easily but when I deflate it back to riding pressure and ride the bike it happens again. The rim looks fine, as does the tyre itself - both are fairly new. Suggestions? Superglue and self-tapping screws? Quote Link to comment Share on other sites More sharing options...
mcman56 Posted Sunday at 12:58 PM Share Posted Sunday at 12:58 PM I had that issue with a vintage bike. It looked like it unseated in the area of the rim weld. The weld did not look that bad but I took a file and smoothed it out as much as I could. That eliminated the issue. Quote Link to comment Share on other sites More sharing options...
lemur Posted Monday at 11:58 AM Share Posted Monday at 11:58 AM Add another rim lock right where the tire pops off the rim bead, if the rim actually has a bead. Guessing it is a steel rim with no bead, guessing you are running a tubed type tire on it. In my experience there is only one adhesive to safely use in tire applications and that is Fish glue. The up side of Fish glue is it's non-flammable and water soluble and re usable, the down side of Fish glue for your application is that it's water soluble. Fish glue is a fast drying, cold set, highly flexible adhesive largely used in woodworking. Quote Link to comment Share on other sites More sharing options...
feetupfun Posted 10 hours ago Share Posted 10 hours ago Sounds like a tube type rim with a tubeless type tyre. The sealing beads on a tubeless tyre have nothing to hold them onto the bead seats of a tube type rim and their shape actively pushes the bead off the bead seat. There are lots of options if this is your situation. Tubeless rim Tubliss device Tube type tyre Reshape the beads on your tubeless tyre Quote Link to comment Share on other sites More sharing options...
oldjohnno Posted 9 hours ago Author Share Posted 9 hours ago 24 minutes ago, feetupfun said: Sounds like a tube type rim with a tubeless type tyre. The sealing beads on a tubeless tyre have nothing to hold them onto the bead seats of a tube type rim and their shape actively pushes the bead off the bead seat. There are lots of options if this is your situation. Tubeless rim Tubliss device Tube type tyre Reshape the beads on your tubeless tyre Interesting, thank you. So it's possible to grind the beads to a different shape? I assume that means flattening its inside diameter? Quote Link to comment Share on other sites More sharing options...
feetupfun Posted 11 minutes ago Share Posted 11 minutes ago 9 hours ago, oldjohnno said: Interesting, thank you. So it's possible to grind the beads to a different shape? I assume that means flattening its inside diameter? Yes, flattening the ID. I also increase the ID slightly Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.