it worked perfectly. I know many of you were clicking on this thread to see a massacred wheel. Sorry to disappoint! ;-)
Spurred by this thread: http://forum.slowtwitch.com/gforum.cgi?post=4056453
The Zipp 900 clincher has a very small valve opening. Much smaller than the tubular version.
Clincher (w/36mm stem). Thanks to dano-oly for the pic:
Tubular (w/36mm stem). Thanks to RichardL for the pic:
You can see it's very difficult getting a crack pipe to fit in there, let alone a CO2 inflator or my Lezyne speed chuck for my Lezyne pump. I also hate using the crack pipe because you don't get a pressure reading on most pumps and it requires a lot of effort to pump up a tire over 100psi (two people or a one-handed battle). So the biggest problem I wanted to solve for me personally was to make sure my Lezyne speed chuck fit and a CO2 inflator fit without some crazy MacGyver workaround.
I was more than a little freaked out taking a dremel to an $1,800 wheel. I knew it would void the warranty and all that. Thankfully, there was a little carbon lip at the bottom of the valve opening that was maybe 6-8mm deep. So I had plenty of room to dremel out the lip before hitting anything considered structural. I used the dremel bit pictured a few posts below to sand and grind the lip down. I wouldn't recommend trying to cut it.
The result
The red line represents where the lip was before I used the dremel and removed it. The green area represents the part removed.
I then pumped up the tire to 115psi to make sure the valve stem was pushed down as far as possible and attached a variety of heads to it...
Lezyne speed chuck:
Crack pipe:
CO2 inflator:
Favorite Gear: Dimond | Cadex | Desoto Sport | Hoka One One
Spurred by this thread: http://forum.slowtwitch.com/gforum.cgi?post=4056453
The Zipp 900 clincher has a very small valve opening. Much smaller than the tubular version.
Clincher (w/36mm stem). Thanks to dano-oly for the pic:
Tubular (w/36mm stem). Thanks to RichardL for the pic:
You can see it's very difficult getting a crack pipe to fit in there, let alone a CO2 inflator or my Lezyne speed chuck for my Lezyne pump. I also hate using the crack pipe because you don't get a pressure reading on most pumps and it requires a lot of effort to pump up a tire over 100psi (two people or a one-handed battle). So the biggest problem I wanted to solve for me personally was to make sure my Lezyne speed chuck fit and a CO2 inflator fit without some crazy MacGyver workaround.
I was more than a little freaked out taking a dremel to an $1,800 wheel. I knew it would void the warranty and all that. Thankfully, there was a little carbon lip at the bottom of the valve opening that was maybe 6-8mm deep. So I had plenty of room to dremel out the lip before hitting anything considered structural. I used the dremel bit pictured a few posts below to sand and grind the lip down. I wouldn't recommend trying to cut it.
The result
The red line represents where the lip was before I used the dremel and removed it. The green area represents the part removed.
I then pumped up the tire to 115psi to make sure the valve stem was pushed down as far as possible and attached a variety of heads to it...
Lezyne speed chuck:
Crack pipe:
CO2 inflator:
Favorite Gear: Dimond | Cadex | Desoto Sport | Hoka One One
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