Supporting Member dazzler24 Posted September 27, 2022 Supporting Member Share Posted September 27, 2022 Perhaps a minor issue in the scheme of things but I bring it up because before going on any substantial ride I make it a habit to check the bike over. You know the usual - fuel, oil, brake & coolant levels, indicators, brake lights and of course, tyre pressures. On removing my rear valve stem cap, air suddenly started leaking at a high rate. Grabbing my trusty schrader valve tool I could tell right away that the valve had somehow managed to work its way to almost the end of its thread and the only thing keeping the air in was the rubber sealed stem cap. Tightening it back up resolved the issue but got me thinking about those that don't use or have lost their valve caps or the caps aren't air-tight. Sure, it might just be a slow leak that you'd notice and can fix it (you do carry a schrader valve tool don't you?) or worst case the schrader valve manages to blow out before you notice and you've got a flat in the middle of nowhere where no puncture repair kit can help in that case. The fact that mine was loose surprised me as I check my tyre pressures very regularly and I could hear the air leaking at this last check. What I'm suggesting is that it must have unwound itself fairly quickly. Again, it's a long shot I know but maybe the next time you are putting some air in your tyres you give some thought to giving those schraders a little tweak to satisfy yourself that they are in fact seated firmly. Anyway FWIW my 2 cents worth contribution. 6 Link to comment Share on other sites More sharing options...
Premium Member 2and3cylinders Posted September 27, 2022 Premium Member Share Posted September 27, 2022 And I do carry that tool as well, a digital tire gauge + a Dynaplug kit & their also excellent electric micro air pump. Check for tread depth, odd wear and damage routinely too. 2 Link to comment Share on other sites More sharing options...
KrustyKush Posted September 27, 2022 Share Posted September 27, 2022 An unusual thing to have happen! This is the first time I've ever heard of this happening, though I have often thought it "could" happen, and why I install the valves nice and snug, and keep caps on the valves. Good thing we check our tire pressure every few days. 1 Link to comment Share on other sites More sharing options...
Premium Member 2and3cylinders Posted September 27, 2022 Premium Member Share Posted September 27, 2022 I've also discovered cores loosening on both bikes, bicycles and cages. It happens! 1 Link to comment Share on other sites More sharing options...
OldBikers Posted September 27, 2022 Share Posted September 27, 2022 Hah! Funny I just checked my stems Saturday as I was topping off the air. As I was screwing the cap back on air started to seep out. I grabbed my valve core tool and checked the valve, all was OK. The problem was the seal in the cap somehow worked loose and exerted enough pressure to release the air when tighten down. 1 Link to comment Share on other sites More sharing options...
bwringer Posted September 27, 2022 Share Posted September 27, 2022 Were these rubber valve stems like OEM or replacement metal valve stems? I've seen this and other issues from metal valve stems, never with the plain old ugly OEM-style rubber TR412 valve stems, replaced at every tire change. Link to comment Share on other sites More sharing options...
Premium Member 2and3cylinders Posted September 27, 2022 Premium Member Share Posted September 27, 2022 My aluminum 85ﾟ aftermarket after market valve stumps don't leak or not yet any way Knock on plastic! Link to comment Share on other sites More sharing options...
Supporting Member dazzler24 Posted September 27, 2022 Author Supporting Member Share Posted September 27, 2022 13 hours ago, 2and3cylinders said: I've also discovered cores loosening on both bikes, bicycles and cages. It happens! 6 hours ago, bwringer said: Were these rubber valve stems like OEM or replacement metal valve stems? I've seen this and other issues from metal valve stems, never with the plain old ugly OEM-style rubber TR412 valve stems, replaced at every tire change. 3 hours ago, 2and3cylinders said: My aluminum 85ﾟ aftermarket after market valve stumps don't leak or not yet any way Knock on plastic! These are my aftermarket stems FWIW. I had them fitted about 10K kms ago when I had my new rubber fitted at the the same time. Who knows, maybe they were only just loosely fitted back then but enough to seal until very recently. Ageing/shrinking of the rubber part of the schrader allowing it to loosen maybe?? Only guessing here. Link to comment Share on other sites More sharing options...
Supporting Member dazzler24 Posted September 28, 2022 Author Supporting Member Share Posted September 28, 2022 15 hours ago, 2and3cylinders said: And I do carry that tool as well, a digital tire gauge + a Dynaplug kit & their also excellent electric micro air pump. Check for tread depth, odd wear and damage routinely too. Yes, all great stuff to have - as do I. And that's thanks to the tips gleaned from you guys. Funny you mention odd tread wear as I have the recurring front tyre wear that is much more pronounced on the right-hand side - mentioned in another thread. Won't be long before I'll be looking for at least a new front tyre. New tyre thread anyone?! 😉 Link to comment Share on other sites More sharing options...
Premium Member 2and3cylinders Posted September 28, 2022 Premium Member Share Posted September 28, 2022 What are you running now and how do you like it other than the odd ware Link to comment Share on other sites More sharing options...
Supporting Member dazzler24 Posted September 28, 2022 Author Supporting Member Share Posted September 28, 2022 24 minutes ago, 2and3cylinders said: What are you running now and how do you like it other than the odd ware I've been running Road 5s which I have been very happy with but wondering whether to try the T32s that seem to get a good rap here. Think you have T32s currently?? Oh-oh, here we go, tyre thread! Link to comment Share on other sites More sharing options...
Premium Member 2and3cylinders Posted September 28, 2022 Premium Member Share Posted September 28, 2022 T31 X 2 THEN T32 X1 SO FAR SPARE SET ALONG W- S22 BUY LOW W- REBATE 😉 Link to comment Share on other sites More sharing options...
Supporting Member dazzler24 Posted September 28, 2022 Author Supporting Member Share Posted September 28, 2022 I'll have to keep an eye out for the good deals over here from this point on as it won't be too long that I'll have to commit to buying .... something? Link to comment Share on other sites More sharing options...
Premium Member 2and3cylinders Posted September 28, 2022 Premium Member Share Posted September 28, 2022 It seems things aren't the way they used to be every month...if not sooner ABOW ABOW = A Bret Original Witticism Link to comment Share on other sites More sharing options...
Supporting Member dazzler24 Posted September 28, 2022 Author Supporting Member Share Posted September 28, 2022 That's like my late father's sound advice of - "I'd better get that 'insert item here' as it'll come in handy - even if I never use it." Link to comment Share on other sites More sharing options...
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