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PostPosted: Fri May 05, 2017 5:54 am 
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Joined: Fri Jun 03, 2016 5:08 pm
Posts: 927
Got the Vittoria Corsa G+ tubulars last night and was a bit surprised that the Zipp valve extenders don't fit them. Seems like they'd need to be a mm wider to screw on. Turns out you can unscrew the whole valve at the base:

Image


And need these Vittoria ones to extend it.

https://www.sigmasport.co.uk/item/Vitto ... m-Pair/8B6

They have removable cores which is cool. Want something in black though. Any idea what would work with Vittorias? Need them for 58mm rims.


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PostPosted: Fri May 05, 2017 7:09 am 
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Joined: Sat Apr 18, 2009 8:59 am
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Location: Surrey UK
KCNC makes Vittoria like extender with removable core in black too, a bit pricey, though (fleebay). You would need something around 80mm.
Quite surprised, I thought, getting myself Paves recently with "normal" valves, that they abandoned this funny valve.

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Posted: Fri May 05, 2017 7:09 am 


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PostPosted: Fri May 05, 2017 7:15 am 
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Posts: 927
Nice thanks, will check those out. Actually trying to unscrew the valve from the tub over breakfast now.. can't get it off. Either it's on mad tight or it's not meant to come off. Can't find any documentation specifically saying the Corsa G+ is definitely this type. Looks like it though, just has a black shaft thing over the valve instead of red.. :unbelievable:


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PostPosted: Fri May 05, 2017 8:19 am 
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Joined: Wed Apr 25, 2007 10:23 am
Posts: 1274
Location: Pack filler
If you've got the standard shorty valves onn your tubs, then unscrew them (might be a bit tight), and fit a 30mm normal valve extender, but the opposite way around. Then screw the vittoria one onto that.

Use some ptfe tape on the threads to limit some of the airloss.

Don't bother with the topeak type extenders that lock the valve; ive had the rubber insert come out and then you're buggered as the extender wont seal as you try to blow it up.

If you're desperate for black, then get some heatshrink and fit it to the extenders. It'll stop them rattling in the rim too :)

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PostPosted: Fri May 05, 2017 8:30 am 
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Urgh. Even more confuzzled now. Black bit doesn't come off!

Image

Image

@jekyll, so I unscrew the valve bit (done, see pic) then I screw in something like:

http://www.tredz.co.uk/.Vittoria-Valve- ... _94442.htm

and then I screw the valve bit I removed into the extension? So if I flat I can just remove the valve bit form the extension and fill with sealant..?

My God, who designs this crap. Just make different length valves on tubs! :D


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PostPosted: Fri May 05, 2017 8:38 am 
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Location: Surrey UK
Ok now it makes sense. This is normal valve. So they abandoned the ones shown in your first post.
You just need any extender with removable core. I find Silca ones quite cool with their anti rattling rubber sleeve.

Sent from my SM-G935F using Tapatalk

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PostPosted: Fri May 05, 2017 8:50 am 
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Joined: Fri Jun 03, 2016 5:08 pm
Posts: 927
Thanks! Phew.. and.. now I 'get it'. Which gives me an idea..

Image

Was trying to screw the top end of the Zipp valve extender directly onto the valve core bit before :D

Such a div! But means I can go a whole day without buying anything bike related. Yes!


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PostPosted: Fri May 05, 2017 11:17 am 
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Joined: Fri May 25, 2007 6:43 pm
Posts: 3285
The red ones were quite short lived, a good idea but too many people had leaks and cross threadings etc. So they went back to the old design.
I've a few of the red valves and had no issues. Most of the people i know with them have no issues either.

One guy has loads of issues, but then again he'd struggle to understand how a stick works.


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PostPosted: Fri May 05, 2017 12:59 pm 
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Posts: 927
Yeah mattr, the red ones looked like the most innovative idea, which is why I thought they were the latest ones I needed. Way better idea than having multiple bits stuck together! Maybe they'll revisit the idea again and fix whatever the issue was for some folk.


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Posted: Fri May 05, 2017 12:59 pm 


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PostPosted: Sun May 07, 2017 4:38 pm 
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Posts: 4962
Location: Canada
Don't forget to use some plumber's teflon tape between the threads...


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