On my road bike, I have a GP5000 tubeless on the rear, and when I ride it on rollers after about 5-10 minutes it has leached out a slippery liquid on the two rear rollers which makes the bike move around a LOT when putting out any effort, so much so it's hard to ride above about 110% FTP (i.e. when I'm finding it harder to maintain core stability / have a higher cadence). It *could* be sealant coming out, however the tyre is maintaining pressure and there's no evidence at all of splatter of sealant on the frame or floor which I've seen before with punctures. I just wonder if, when the tyre gets hot, it starts to release an oil from the rubber? I usually ride my tri bike on the rollers which have GP4000 clinchers on them - no issue at all like I'm getting with GP5000 tubeless. Anyone experienced this? I know I could just change tyre and try that, but the 5000 is fairly new and not sure I can be bother to change rear wheel each time i want to ride this bike on the rollers (although that's probably my next course of action).
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Re: GP5000 tyres getting real slippery on rollers [jknipe101]
[ In reply to ]
Roller grease? Chain lube?
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Re: GP5000 tyres getting real slippery on rollers [Slug]
[ In reply to ]
Roller grease would show when I ride my tri bike (which I use more often). Chain lube is possible I guess, although it's the same lube on both bikes and I've never had this issue on the tri bike. I guess it wouldn't take much of any liquid to cause a slippery sheen across the rollers...will clean and re-lube the chain at the weekend and see if it helps. Thanks.
Re: GP5000 tyres getting real slippery on rollers [jknipe101]
[ In reply to ]
I think it is the sealant. A friend had the same thing happen last year during our roller sessions. The tire was newish but the sealant had gone bad or was part of a bad batch. The carrier had seperated from the latex (or whatever) and apparently moves through the pores of the tire fairly quickly...especially after it warmed up a bit.
Try removing the tire, wiping out all the sealant and putting in some fresh stuff. Maybe clean the tire with isopropyl alcohol too.
Rich
Try removing the tire, wiping out all the sealant and putting in some fresh stuff. Maybe clean the tire with isopropyl alcohol too.
Rich
Re: GP5000 tyres getting real slippery on rollers [rrutis]
[ In reply to ]
rrutis wrote:
apparently moves through the pores of the tire fairly quickly
I changed the sealant a month or so ago. Had the tyre off and gave it a good clean. However, I struggled to re-seat the tyre big time and ended having multiple attempts with painting on water and dish-washing liquid...which has got me thinking it could be residual water / dish-washing liquid which has nowhere else to evaporate off to (the tyre being sealed to atmosphere obviously). I might take the tyre off, let it dry, then reinstall with new sealant but (if I can) avoid using water and dish-washing liquid.