Presta valve extensions?

[Scotty675]

Anyone out there running valve extensions. I have 2 sets of wheels running tubeless short valve stems. Getting over the track pump blowing off these without holding it. Wondering if these extensions are any good or I need to buy new longer tubeless valves. Before I'm flamed it's not the pump as it works fine on my longer stem valves.

 

[BT180]

Just buy longer valves and be done with it.

 

[Scotty675]

Can anyone confirm a stans valve will seal on a manic crossmax slr and a crossmax sl. I have been told you need to run the mavic ust valves. I have used a stans valve on a sram roam 60 wheel and it sealed fine.

 

[ForkinGreat]

Just buy longer valves and be done with it.

longer valves is good, eg 44 over 35mm. Also have a look at the pump head. the rubber that grips onto the sides of the valve - might be buggered and need replacing. ie chuck the whole hose and end fitting and get a replacement.

What sort of pump do you have?

 

[Scotty675]

Longer valves are definitely the go. I have a set of wheels with 44mm valves and it works fine. It is a Tiago floor pump, have had it for around 5 years. I did pull the end cap and have a look everything seems fine but it has done a bit of work. Just annoying that it works fine on longer valves.