Originally Posted by
colt1954
Hi,
I have a slight tube tear on the base of the my valve, this is the second time this has happened, now on a new tube, any ideas why it's failing there?
Any manouveres that could cause it?
Colin
What are you using to pump up the tires? If the valve is failing when using a floor pump, you may need to deburr the rim. Use a counter sink tool to chamfer the hole.
Here’s a good hand one that will do the trick.
If, on the other hand, it’s happening when you are using a frame pump, it may be the pump. A hand pump that you hold and pump perpendicularly to the wheel put a lot of stress on the valve. A pump with a hose like the Topeak Morph series will put less stress on the valve (and is easier to use).