partydave Posted February 17, 2015 Posted February 17, 2015 Hi guys, sorry for the noob post.I have my first mtb race coming up on Sunday. I've trained long and hard and in order to better prepare myself, I decided to test out my CO2 bombs and see get to grips with the technique. I deflated my rocket rons (I am aware they are not tubeless tyres, but I've been running them with no issues for months) and hit them with a bomb. Great success, but I struggled quite a bit to remove the adapter from the valve.Deflated the tyre again and put some air into it with my floor pump. Success again. Next morning, the tyre was completely deflated though. Pumped up again and this morning it's flat again. I listened for any leaks, but can't hear a single hiss. Don't think I've unseated it either. What's going on?
G00SE Posted February 17, 2015 Posted February 17, 2015 Check if you didn't loosen (or damage) the valve core when you were battling to get the bomb adapter off.Might be slightly loose causing a very slow leak.
FlyingScot Posted February 17, 2015 Posted February 17, 2015 Check your sealant and make sure the tyre is seated properly.
brucem76 Posted February 17, 2015 Posted February 17, 2015 Run some water in bath and turn the inflated wheel around slowly in that. Will find the problem very effectively. Could be valve area, or if it's between tyre and rim, hold wheel so that gravity gets your sealant flowing there, keep it in position for a few minutes
dirtypot Posted February 17, 2015 Posted February 17, 2015 First time with a bomb and you make it go pfffft everywhere into the atmosphere? Impressive!
mudda Posted February 17, 2015 Posted February 17, 2015 O yes to test for leaks ... find a tub big enough to fit the whole wheel into up to the rim .. then look for bubbles .. Bombs dry out sealant if you have tubeless ... Open your tyre and see if you have a nice rubber ball from the sealant ...
partydave Posted February 17, 2015 Author Posted February 17, 2015 Bombs dry out sealant if you have tubeless ... Great, wish I knew this the day before yesterday
Hennie VR Posted February 17, 2015 Posted February 17, 2015 Bombs dry out sealant if you have tubeless ... Great, wish I knew this the day before yesterday Does not happen over night.
RockCoach Posted February 19, 2015 Posted February 19, 2015 Bombs dry out sealant if you have tubeless ...[/size] Great, wish I knew this the day before yesterday[/size]Different sealants dry up over time. In my experience Stan's and Batseal take about two months of summer riding. They are the two sealants which seal the fastest but dry up quickest too. We are currently testing a sealant which seems to be as active but doesn't dry up as quickly.
Beefy Posted February 19, 2015 Posted February 19, 2015 I have been in a similar scenario. The tyres may have small holes in the sides that the sealant needs to close. I had to take the tyres off the bike, pump them up, spin the wheels to get the sealant spread and then leave the tyre on its side overnight to get into these holes. To get to the cause of the problem the bath suggestion is good. It could also be the valve or the wheel / rim tape that is the issue. Good luck.
partydave Posted February 19, 2015 Author Posted February 19, 2015 Thanks for the advice guys I pumped it up one last time, put it in the bath and saw no obvious leaks. Went for a ride and everything seems fine. Will see tomorrow morning if the problem has been resolved
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