I have a 2012 Cervelo P2 so my tire widths are limited to 23mm or 25mm. Would you go 25mm (Conti GP5000?) for 70.3 and IM? And would you go latex tube (Vittoria, Michelin, or something else?) and do you use rim tape (if so what, Silca?)
Thanks!
Go with a 25mm GP5000 TR (low CRR and good puncture resistance, virtual no aero penalty on a rear disc) and a latex tube (any brand). No need for a rim strip (no spoke holes to cover).
Concur - Vittoria latex with a gp tt tire though. 25mm. Slightly less puncture protection but slightly better rolling resistance to the gp5000. If I needed a new tire tho I would get the gp5000 as the puncture protection is a fair bit better I believe. So far I have been ok with the TT
GP5000 23 and 25mm are within margin of testing error difference in Crr… so I’d go 23 for the better trailing edge aero properties (unless you are a really big guy, then the 25 might offer more tunable tire pressures for your weight).
SILCA latex tubes I believe are the only ones short enough to work with your disc (42mm)… Vittoria latex use 51mm valve which is too long to fit an adapter into the small access holes on the Zipp discs. Either way, you need a tube with 37-42mm stem to make everything work.
I was using Vittoria Corsa Speeds 25mm with Vittoria latex tubes(the 48mm valve length works perfectly fine with the crack pipe for the Super9). Although it’s like playing with fire that tire was fasttt. For less than ideal roads I use a GP5000 25mm
GP5000 25mm, Vittoria latex tube and I haven’t had a single puncture for the past two years. It’s fast but pay attention to road condition and adjust air pressure based on your weight. It can be faster and comfortable if you dialed in right.
What’s the best crack pipe to use with the Super 9? I assumed it was the Zipp, or at least assumed the Zipp was decent enough and ordered it but when it arrived I saw it goes to Shrader and I have pumps and inflators that are Presta only, because my road and tri bikes Presta valves! Was kinda baffled by this!! Is it just me or is this a really odd/bad design to assume a Shrader tip would be useful to most road and tri bikers?
Get the silca slide locking one. The Hiro I think it’s called
Get the silca slide locking one. The Hiro I think it’s called
Looks cool but also looks like a Schrader tip, not Presta in Presta out.
Are you sure the zipp one is Schrader? They don’t even make wheels that can take a Schrader valve stem.
https://silca.cc/products/hiro-locking-presta-chuck
We’ve been able to use the above chuck on Silca or Vittoria tubes in our Zipp Super9 disc. Requires some finagling for the Vittoria tubes but works fine.
Get the silca slide locking one. The Hiro I think it’s called
Looks cool but also looks like a Schrader tip, not Presta in Presta out.
https://silca.cc/...locking-presta-chuck
This is presta compatible and works with Vittoria or Silca latex tubes and our Zipp Super 9.
My wife (63kg) uses a 25mm Continental Gator Hardshell for training and either a 23mm GP5000 (non TLR) or Corsa Speed G+ 2.0 TLR for racing. Corsa Speed for “A” races with low puncture likelihood. I use a 25mm GP5000 for all my racing with that wheel because I’m 94kg.
I see that this supports putting on the Presta valve on the wheel, but it shows that on the other side it’s a threaded Schrader valve that would connect to a pump or inflator… that’s the issue - my inflators and pump take Presta valves not Schrader valves so with this adapter or the Zipp one you can’t use a pump or inflator that supports only a Presta valve. So what am I missing? Do I need to throw away all of these Presta only inflators and Presta only pumps and buy inflators and pumps that support both Presta (my front tire without the adapter) and disc wheel needing Schrader because of the crack pipe?
At first I didn’t understand why it wouldn’t work but then I got it. The pump you have is ONLY presta and the crack pipe ONLY threads onto schrader making it impossible to even use it for pump the tubes up.
Just thinking out loud, could you put a presta valve adapter on the pump and then the crack pipe onto the adapter to inflate the tube?
It looks like there are some valve adapters that end with a Presta male tip instead of a Schrader male tip. Here are a couple I found Googling. Just surprised my situation seems like such an edge case
Are you sure the zipp one is Schrader? They don’t even make wheels that can take a Schrader valve stem.
Presta female to Schrader male
It looks like there are some valve adapters that end with a Presta male tip instead of a Schrader male tip. Here are a couple I found Googling. Just surprised my situation seems like such an edge case
https://www.eriksbikeshop.com/...0fbc8e31#productInfo
https://bicyclewarehouse.com/...ZEAQYBCABEgJbNfD_BwE
https://mybikeshop.com/...ZEAQYCSABEgIuU_D_BwE
https://store.hedcycling.com/presta-valve-adaptor/
Can anyone recommended any of these 4 or another one that has a Presta (not Schrader) male end?
Funny how the HED and MBS are the exact same item with a price difference of $15.00!
Looking at the photos of the ones I just identified, actually it seems they may all be designed to fit directly into the rubber hose of a floor pump, not work as an adapter with the shape of a Presta valve core. So none of these may work…
Different but related question - what CO2 inflator do you all take for the race to refill the Super 9 in back or the front 404/808 with a Presta tube?
Does everyone have a CO2 inflator and a floor pump that are compatible with both Schrader and Presta valves? Maybe that’s the only solution?
And maybe there is a simple adapter from Schrader to Presta that allows Presta only inflators and pumps to work with Schrader valves?