Forum menu
Looking for a decent shock pump to replace the 'Wrench Force' one i have at the minute which for a piece of accurate measuring equipment requires a lot of guess work, main problem is leakage when fitting/removing the pump so would ideally like one with a fancy little flicky switch that solves the problem, as both the shocks a have on bikes have a small high pressure chamber and even the slightest pssst can be 50-60psi. All suggestions greatly appreciated!
Topeak one is good - got that and a Fox one and it's definitely the more consistent. Has a 2 stage valve so in theory no pressure should be lost when removing it.
Topeak one here as well, has the two stage part that unscrews before removing it from the shock. Seems to work every time.
Topeak here too - I'm really impressed.
Rachel
got a very thing long Fox one, it is very good. Do not buy a Specialized one.
I use a very old Fox one but I also use it with a Topeak Pressure-rite check valve which means I get more consistent results.
Magura one said to be very good. Topeak one excellent & much cheaper.
Andy
Another vote for the Topeak. Had mine for years and it's never leaked air, great little pump.
[i]main problem is leakage when fitting/removing the pump so would ideally like one with a fancy little flicky switch that solves the problem, as both the shocks a have on bikes have a small high pressure chamber and even the slightest pssst can be 50-60psi.[/i]
Surely this is just the air in the shock pump escaping when the pump is removed. When the pump is re-attached the air in the fork/shock will escape into the pump to equalise so it will look like there is a large drop in the pressure given the small chamber size. If air escaped the fork/shock, that would be a problem with the valve. I've got a Wrenchforce pump and it's always worked fine.
I've got a Halfords Bikehut one which was about £12-£15 IIRC and is identical to many 'premium branded' ones and is tough and relaible.
PeterPoddy - MemberI've got a Halfords Bikehut one which was about £12-£15 IIRC and is identical to many 'premium branded' ones and is tough and relaible.
Yep, this is a good pump. The RockShox one I have feels better quality but the halfords one has been perfect in use.
+1 for not buying a Specialized one. They suck!!
+1 for Magura. I have a Specialized one too and while it works ok, it give wildly varying pressure readings. It has the advantage of doing both tyres and shock though so handy on the trail.
Why doesnt someone make a tiny gauge that you leave attached to the valve.
Look out for me on Dragons Den. 😉
I've got a Buzzy's Pollinator >10 years old and still going strong.
BETO's pump is spot on- durable and easy to use.
But I'm wondering if it's just what Nuke says- any decent shockpump should have no leakage as it should close the valve before the seal breaks, but you'll always hear the air leaking from the pump (and, if you reattach it afterwards you'll find lower air pressure in the shock because some of the air from the shock repressurises the pump)
takisawa2 - Member
Why doesnt someone make a tiny gauge that you leave attached to the valve.
Look out for me on Dragons Den.
It would need a very wide scale on it which would make accurate readings harder
"I'm out"
to explain the leakage i little clearer, it only occurs for about a 1/4 turn where the pump is opening the valve but not sealing against the little rubber o-ring inside, and yes i do realise there is pressure release when detaching the pump but as an example, pumped my shock up at the weekend to my 105psi mark (should be 95psi but it leaks around 10psi) unscrewed the pump but caught it on the leaky bit between finger twists ended up at about 45-50psi.
Which specific Topeak pump is everyone talking about? Seems like this is the verdict so will be investing in one 😀 thanks for your help all!
no it didn't! pressure simply released as you re-attached the pump (it's meant to) the actual shock valve is closed when you're unscrewing the pump's attachment so you don't lose any pressure until you re-attach.
wrench force shock pumps are fine!
but what are you on about when you say "it leaks around 10psi"?
if the shock valve is leaking, tighten it or get it replaced.
There's some right divs on here!
Nuke's got it spot on.
As above posts, pressure drop due to presuization/increase in volume with the pump hose to the gauge on pump.
Fox pumps are pretty good (what I use in the workshop), altthough I haven't tried a wrench force
This is the Topeak one I use - can't fault it.
http://www.wiggle.co.uk/topeak-pocket-shock-dxg-shock-pump-with-gauge-1/
Reviews here -
http://www.mtbr.com/cat/accessories/pump/topeak/pocket-shock-dxg/PRD_416099_136crx.aspx
Loco - Have a look at a wrench force shock pump, it's the same pump as your Fox shock pumps (just slightly different colour and graphics and the wrench force is sold at a slightly cheaper RRP)
Forget the 10psi bit, i know why that happens, and thanks for the 'div' comment, not helpful at all, please excuse yourself. The PROBLEM that i highlighted to try and overcome was that of the pin in the pump still depressing the valve as i was disconnecting the pump which with the DXG pump and the clever little thingy-majig they have on it will solve that problem, and its shiney too! Which we all know means it better!
Thanks neninja, i think i'll be buying myself one of those.
Cheers
I thought the "div" comment was pretty spot on.
I know what you mean loneomen... I have an old Marzocchi branded pump where it's possible to completely deflate the shock while you are undoing the connector as there is a point where the pressure seal is lost while still having the valve pin slightly depressed. It was always a race to undo the pump as quickly as possible and so get as little pressure loss as possible
I ended up fixing that by stuffing extra o-rings down inside the pump head so it would seal until the valve was fully closed, but it still didn't work very well.
Thankfully I was bought a new shock pump which has a two stage head on it... you screw onto the valve first and then screw another part in to depress the pin.
No idea what make it is though...
It must be amazing to know everything like GW and twohats - you obviously both know more than a number of shock pump designers and manufacturers.
There are only 2 divs on this thread.
why cannt people just help people on the bike bits and argue in the chat bit?
i had one pump that did as the OP described and one that did not . Can I be half a div and half awesome please 🙄
I got the Magura one as I was sick of having to guesstimate 10-15psi more to compensate for what was lost when unscrewing the valve and it's great.
The SKS pumps are good too but £££££££
neninja - MemberIt must be amazing to know everything like GW and twohats - you obviously both know more than a number of shock pump designers and manufacturers.
If the pump's operating as described, that seems entirely possible.