...and the shed. Stuart's blog of riding & tinkering about with bikes
Friday, 9 January 2015
For a while my CBF250 has had a slow puncture in the rear
tyre. It would deflate over a couple of days and stop at about 10 psi. It wasn't
a problem because I was doing short journeys so I just pumped it up regularly.
But just after Christmas I was washing the bike and spotted the head of a screw
in the tyre. The tyre was just about done so I replaced it.
Inside the tyre
This made me think about a couple of things. Firstly the
advantages of tubeless tyres. Although the screw had completely pierced the
tyre it only went down slowly and didn't completely deflate. A tubed tyre would
have got flat immediately. Also if a tubeless tyre deflates the tyre will stay
in place on the rim. A tubeless doesn’t. Years ago I was returning home from
work on a busy motorway when my MZ Saxon with tubed tyres had a puncture. I
ended up riding at 50 mph on the rear rim. Luckily I was able to stop in the central
reservation but it was a very dangerous incident.
Also what do you do if you get a puncture out on the road? I
carry a tubeless repair kit. This consists of plugs that are glued in place.
The hole has to be reamed out and the plug glued and inserted with a tool. The
tyre is then inflated with CO2 capsules. I've had to use this type of kit a
couple of times over the years and it worked ok.
Tubeless repair kit
The kits I carry on the bikes are pretty old now but there
are alternatives that don't require reaming or glue and I might get one. Anyone used any of these?
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