southwester Posted April 12, 2014 Report Share Posted April 12, 2014 I've ended up with a tube in a tubeless x11 rear because the fitter couldn't get the bead on the rim without it, he doesn't know about the doughnut that I have learned since you need. The problem might be that there isn't a rim lock on the rear so is this going to work? I'm booked in for a trial tomorrow and don't want to miss it and can't really do anything about it before. Anybody got any experience with this? Quote Link to comment Share on other sites More sharing options...
cleanorbust Posted April 12, 2014 Report Share Posted April 12, 2014 Been using a rear tyre with tube and without rimlock for years (on a Sherco) and run normal trials pressure ( 3.5 psi) without a problem. Quote Link to comment Share on other sites More sharing options...
southwester Posted April 12, 2014 Author Report Share Posted April 12, 2014 Just what I wanted to hear! I would best answer you if I wasn't on my phone. Cheers Quote Link to comment Share on other sites More sharing options...
zerorev3rev4 Posted April 12, 2014 Report Share Posted April 12, 2014 probably more reliable than not having a tube as wont leak and the tubeless tyre once beaded wont or shouldnt come away ,, is it a michelin by any chance Quote Link to comment Share on other sites More sharing options...
southwester Posted April 12, 2014 Author Report Share Posted April 12, 2014 That's good to hear. Yes Michelin Quote Link to comment Share on other sites More sharing options...
t-shock 250 Posted April 12, 2014 Report Share Posted April 12, 2014 I would have it fitted by someone who knows what they're doing, or just about anyone with a compressor. Quote Link to comment Share on other sites More sharing options...
thats_a_five Posted April 12, 2014 Report Share Posted April 12, 2014 Running a tube will make the sidewall feel slightly stiffer so it you dislike the feeling, you can run slightly lower air pressure. The biggest issue is heat build up IF you are running at high (for trials) speeds for long periods of time. I think that is called green-laning in UK? Heat build up is generally not a problem for normal trials use. Quote Link to comment Share on other sites More sharing options...
mickwren Posted April 12, 2014 Report Share Posted April 12, 2014 Having a trials tyre fitted by a fitter, what has the world come to ????? Quote Link to comment Share on other sites More sharing options...
cleanorbust Posted April 12, 2014 Report Share Posted April 12, 2014 What indeed. On one of my last visits to a dealer a chap arrived to collect his trials bike from being "serviced" (the sort of thing I thought we all did at home in a spare half hour). Among the specialist tasks he had asked to be carried out was the fitting of a new spark plug. Quote Link to comment Share on other sites More sharing options...
monteberg Posted April 13, 2014 Report Share Posted April 13, 2014 x2 on t shock 250 comments and if you feel the need to run a tube and are worried about tyre rotation tearing out the valve why not just fit a rim locK????? Quote Link to comment Share on other sites More sharing options...
thats_a_five Posted April 14, 2014 Report Share Posted April 14, 2014 x2 on t shock 250 comments and if you feel the need to run a tube and are worried about tyre rotation tearing out the valve why not just fit a rim locK????? If you have a tubeless rim, running a rim lock would mean drilling a hole in the rim to mount it. If it is an older tube type rim, it probably already has a hole for a rim lock. If you do run a tube, be sure to NOT use a locknut on the tube valve stem. If the tire / tube do slip on the rim, it will pull on the valve stem and eventually tear the valve out of the tire. (Of course that will always happen at the point in the ride that is farthest from the truck - don't ask how I know). Without the locknut, when the tire/tube does slip, you will notice that the stem is coming out at an angle and pulling itself back inside the rim. You can easily deflate the tire, break bead and slip the tire/tube back to the correct position. Quote Link to comment Share on other sites More sharing options...
monteberg Posted April 14, 2014 Report Share Posted April 14, 2014 at the end of the day running a tube in a tubeless set up is a bodge job you can not reliably run with pressures as low as we do with tube less and for peace of mind I would not run a tube without a rimlock my trials hoj even has one on the front (tubeless rear) enduro has two rear and one front (tubed both ends) drilling a hole is no biggy and if you return to tubeless just bung an extra valve in the hole to close it Quote Link to comment Share on other sites More sharing options...
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