May not apply to your situation but on my Hed Trispokes I screw a Schrader adapter over the presta valve and then attach it right to the pump.

Apparently you really need to push it far onto the stem:

http://forum.slowtwitch.com/...tring=click;#5053705

I have used Lezyne without any issues. I have a Lezyne pump and the metal 90 degree "speed chuck" that comes separately.

you really have to push the pipe onto the valve .... dont worry u cant overdo it

This one: http://fairwheelbikes.com/...a84f26d1df62e1be99d1

Never had an issue with it until I lost the red cap and the rubber o-ring in my way to transition. If you buy one make sure you secure it with tape or something.

I just bought one of their new gaskets and it's awesome. It goes on easily, creates a tight seal, and most importantly, it now allows me to pump up my disc without having to hold it in place.

Here is the best pump head you can buy



http://www.amazon.com/...d-Yoko/dp/B003EIIXSG

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BoulderCyclingCoach.com

Silca has a new improved crack pipe: http://silca.cc/...isc-wheel-mini-chuck Supposed to lock on to the valve so you can use both hands on pump - Buddy of mine just ordered one

Most of us learn to hold the old aluminum one on with one hand and pump with the other, one of those useless skills that comes with first world problems! ;)

Good luck

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WyoJoe

If you think you can do a thing or think you can't do a thing, you're right - Henry Ford

UMD,
The newest generation SILCA adapter looks like this: I assume you have an older silver aluminum version?


I purchased the SILCA brand a few months ago and this was the first product we re-engineered and manufactured, I am sure it won't let you down. I am yet to find a valve stem that it won't hold until at least 120psi. I know a lot of Slowtwitchers have upgraded and the response has been overwhelmingly positive!
You can have your local shop order them through us, our distributor QBP, or directly from us on our website here: http://silca.cc/...isc-wheel-mini-chuck

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http://www.SILCA.cc
Check out my podcast, inside stories from more than 20 years of product and tech innovation from inside the Pro Peloton and Pro Triathlon worlds!
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Awesome! Looks to be $70 shipped, for a pump head. Welcome to the world of triathlon!

Those are very nice, but actually THIS: is the finest pump head you can buy! Launching/Shipping June 10

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http://www.SILCA.cc
Check out my podcast, inside stories from more than 20 years of product and tech innovation from inside the Pro Peloton and Pro Triathlon worlds!
http://www.marginalgainspodcast.cc

I love bike component/tool jewelry :-)

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http://bikeblather.blogspot.com/

Josh, where would this head be used instead of this?


Please let me know if I am correct that I need the Locking Schraeder Chuck attached to my pump in order to use these products.

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/kj

http://kjmcawesome.tumblr.com/

I am still having problems trying to get it onto the short zipp extender on my super9. cant get it to click/pop on even once, let alone twice to do no hands

I just purchased one and thought that as well until I realized I hadn't pushed it down hard enough. Now I love it. Except for the fact that it looks like a newer/better version is about to launch which Josh never mentioned prior to my purchase. Keeping secrets to himself again.

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Twitter@Forsey37

kjmc the 17-4 classic Presta chuck in your picture will not work in disc wheels. The image I posted is of a soon to be released product, which is a locking chuck for presta valves that will fit in disc wheels. I am actually writing the copy and preparing to put the info on our website over the next few days on this product..but thought the ST crowd should get a first peek. The picture I posted is of the SILCA 'HIRO' chuck, inspired by the classic Japanese design, but modernized in stainless steel and greatly improved upon by using a two-stage 252 gasket for improved sealing as well as easy maintenance/replacement over the long term. The Hiro chuck will hold 400psi on any presta valve stem if you ask it to, and works in all discs, even older Zipp and Corima discs with very small openings. We've got 20 of these across Europe with various pro mechanics and the feedback has been 'You'll never use anything else' so we hope our customers feel the same!

All of our chucks have male Schrader threads on the pump side, so require a Schrader chuck or adapter on your pump hose, it can be our locking Schrader, a thread on Schrader as on older SILCA pumps or any other proper Schrader attachment on any pump.

Best
Josh

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http://www.SILCA.cc
Check out my podcast, inside stories from more than 20 years of product and tech innovation from inside the Pro Peloton and Pro Triathlon worlds!
http://www.marginalgainspodcast.cc

Jeff,
Post a photo if you can and we can try to trouble shoot it..I think you are saying that there is not enough valve stem exposed to get the adapter on, but want to be sure.
The gasket needs at least 7mm of the larger diameter portion of the stem plus the valve core exposed to fully seat...but I'd like to see a picture to diagnose for sure...this is all stuff we are working into the 'user guide'

Forsey, thanks for buying an adapter and I can assure you that the coming locking chuck is a totally different beast.. Personally I think the best solution is to own both ;-)
Best
Josh

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http://www.SILCA.cc
Check out my podcast, inside stories from more than 20 years of product and tech innovation from inside the Pro Peloton and Pro Triathlon worlds!
http://www.marginalgainspodcast.cc

So, what are the pro and cons on which chuck to buy that will work on a disc wheel!!! It kills me wife and I trying to get it filled.
Your first update or the new one coming June 10th?

.

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Dave Campbell | Facebook | @DaveECampbell | h2ofun@h2ofun.net

Boom Nutrition code 19F4Y3 $5 off 24 pack box | Bionic Runner | PowerCranks | Velotron | Spruzzamist

Lions don't lose sleep worrying about the sheep

So the standard disc adapter cost $32 and will get you to 120psi on any valve stem..over 150 on most. It's small and light and easy to use, it just has to be fully engaged to work. Primarily it is designed to adapt your pump for the disc when needed.

The coming chuck is a professional level tool that we've refined over the last 6 months with pro-tour mechanics and world-championship track mechanics. It's solid stainless, (vs aluminum on the adapter) and uses a lever action to compress the gasket after installation. It will hold over 400psi on any stem, is completely adjustable to compensate for both gasket wear and stem size, is easily field rebuildable, and can literally be run over by a team car without issue (inadvertently tested..) Gasket is insensitive to the rapid temperature shifts of using compressed speciality gases or other chemicals, and helps in a situation where say you have to rapidly fill 8 team pursuit tires with a specialty gas within a few minutes as close as possible to a start time.. lots of intricate details had to be sorted out. It has 12 subcomponents compared to 4 in the disc adapter..with all of that, the locking chuck will cost $110 so it's really a different beast from the adapter, but it would most certainly solve your disc inflation problem!

One of our pro mechanics at the Giro sent this to me "4 weeks now and big smile every time I use Hiro. Great feel and no air loss at any pressure. we need 3 more as quickly as you can because (other mechanic) wants his own and we have none on the truck in Spain. I am also using it full time not only on disk wheel and will let you know how the gasket is wearing...'

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http://www.SILCA.cc
Check out my podcast, inside stories from more than 20 years of product and tech innovation from inside the Pro Peloton and Pro Triathlon worlds!
http://www.marginalgainspodcast.cc

Sure wish my clincher disc had that much space to put a crack pipe!!!!!!
I assume that is a tubular where you can find shorter stems.
.

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Dave Campbell | Facebook | @DaveECampbell | h2ofun@h2ofun.net

Boom Nutrition code 19F4Y3 $5 off 24 pack box | Bionic Runner | PowerCranks | Velotron | Spruzzamist

Lions don't lose sleep worrying about the sheep

When I buy something, I would rather save up and buy the best.

Now, still have a concern about it fitting on my Zipp clincher since even though I cut some of the wheel to make the opening bigger, I can only get the crack pipe in by being the stem.

So the picture posted of the wide opening on the disc I believe is a tubular and can get gotten with short valve stems.

But this was always the issue I had with the Zipp disc clincher. I could never find tube with shorter valve stems to get the crack pipe in easily. Are there such tubes? I have to assume
this was a major complaint coming back to Zipp.

So if one buys the new $110 part and it does not fit, can it be returned?

Thanks

.

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Dave Campbell | Facebook | @DaveECampbell | h2ofun@h2ofun.net

Boom Nutrition code 19F4Y3 $5 off 24 pack box | Bionic Runner | PowerCranks | Velotron | Spruzzamist

Lions don't lose sleep worrying about the sheep

Jeff,
I get it now..you need either a removable valve core type extension so that you have the valve core threads exposed, or you can use the new Hiro locking chuck..it will grab an extender like this, but the disc adapter really only works on presta valves with cores and threads. Your other option would be a valve extender with valve core threads at the top, we will be launching such a beast in a few weeks. Third option would be a tube with a longer stem.

H20, it will definitely work, no doubt. But yes, if you aren't happy, it can be returned.
Josh

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http://www.SILCA.cc
Check out my podcast, inside stories from more than 20 years of product and tech innovation from inside the Pro Peloton and Pro Triathlon worlds!
http://www.marginalgainspodcast.cc

super9 clincher latex tube