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is there a shock pump out there that doesn't lose air from the fork/shock when you remove it from the fork?
I find it hard to remove the pump from the top of the fork legs quick enough so as to minimise air leakage (mostly cos the pressure gauge hits the frame and if i bend the pump at the tube it doesn't release quickly).
Am i doing it wrong or is it just i'm using a poop pump?
Cheers
Swoosh
From what I have been told that bit of air doesn't matter
it's just the air in the pump escaping.
MrSmith - Memberit's just the air in the pump escaping.
wot he said
no shock pump loses air from the shock on removing. The air you hear escaping is from the pump hose. The valve is in the shock not the pump and closes almost instantaneously when the adaptor is unthreaded suficciently.
However it would give the illusion you lost air because when you re-attach the pump to check your pressure you loose some air from the shock, as it fills the pump.
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[url= http://www.chainreactioncycles.com/Models.aspx?ModelID=7355 ]http://www.chainreactioncycles.com/Models.aspx?ModelID=7355[/url]
[i]Stoner - Member
no shock pump loses air from the shock on removing. The air you hear escaping is from the pump hose. The valve is in the shock not the pump and closes almost instantaneously when the adaptor is unthreaded suficciently.[/i]
Not always true - my mate had some CDale Fatty forks. Everytime you started to unscrew the pump the air leaked out of the valve. Very hard to maintain a correct psi setting. In which case, those 2 step valve pumps are great.
[url= http://cgi.ebay.co.uk/Beto-Mountain-Bike-Shock-Pump-Gauge-Bleed-Valve-MP035_W0QQcmdZViewItemQQ_trksidZp1742Q2em153Q2el1262QQcategoryZ22691QQihZ020QQitemZ300277175014QQtcZphotoQQsalenotsupported ]Woollyhat[/url] do one on Ebay for £17
there's no excuse for a shonky design 🙂
either that or twiddle your fingers quiker when unwinding the adaptor! 🙂
I had a similar problem with my DHX boost valve. The chamber is pretty small and small differences made a big change to ride. Try one of these.
http://www.wiggle.co.uk/p/cycle/7/Topeak_Pressure-Rite_Connector/5360017387
Cheap and works well. You'll still get a sound of air escaping but its only from inside device.
Clubby, do you leave that attached or do you remove it after inflating to the required pressure? does no air escape at that point as well?
You remove it. The device has a valve at each end on long threads. You remove the shock pump first which will hiss as usual, but this is only the air trapped on the device. You can then remove it. There will still be a very small amount of trapped between the shock and the second valve when you remove it but because of the long threads the shock valve will be closed before it comes off. The other big advantage is that because the attachement is a right angle its much easier to screw the shock pump on and not keep hitting the frame.