General Discussion Triathlon Talk » Tire and Valve Extender Question for Zipps Rss Feed  
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2014-10-06 12:05 PM

Member
14

Fort Worth
Subject: Tire and Valve Extender Question for Zipps
My new bike (Cannondale hi mod slice) is coming with Zipp 808 clincher rear and Zipp 404 clincher front with no tires or tubes.

My questions are:

1) What size valve length do I need? I assume 80mm is fine for the 404, but do I need a 30mm valve extender for the 808?

2) Any tire recommendations for training? I'm trying to decide between Gatorskins, Grand Prix 4 seasons, and the GP4000s. Also any suggestions on where to buy?

I care more about durability and no flats for training. I'll put something faster for races.

Thanks for any help, I appreciate it.


2014-10-06 1:02 PM
in reply to: Beniger

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Master
2855
20005001001001002525
Kailua, Hawaii
Subject: RE: Tire and Valve Extender Question for Zipps
These are the sizes of the Zipp valve extenders..

48 mm (1.9") for 404 dimpled wheel sets.

72 mm (2.9") for dimpled 808 wheel sets.

98.26 mm (3.9") for dimpled 1080 wheel sets.

You can use a 80mm stem tube for the 404, but an extender is needed for anything larger (808, 1080)
For the extenders, use a tube with a valve larger than 30mm.

the rim depths for 404 57mm, 808 82mm, and 1080 108mm.

There are a number of brands for extenders, I have the Zipp ones, which many people don't like. One that is pretty nice is the Topeak.

video from Zipp on installing extenders:

http://www.youtube.com/watch?v=S9YLlZDIOkU
2014-10-06 1:17 PM
in reply to: Beniger

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Expert
1111
1000100
Albuquerque, NM
Subject: RE: Tire and Valve Extender Question for Zipps
I use Continental 42 mm valve tubes for all my bikes.

Then...
> For the 808s, I use Continental 60 mm extensions
> For the 404s, I use Continental 40 mm extensions
> For regular depth rims, I don't' use any extensions

This way I use the most popular size tubes at my LBS, never have to worry about what length value I need to get when I buy tubes, and all my tubes are interchangeable when I need to steal one from one bike to use on another...

Just be sure to carry the little valve tool in your seat pack on rides.

For tires, I use Gatorskins... great tires!
Add an ounce of Stan's to make them damn near impossible to flat.
2014-10-06 1:58 PM
in reply to: RockTractor

Member
14

Fort Worth
Subject: RE: Tire and Valve Extender Question for Zipps
Originally posted by RockTractor

I use Continental 42 mm valve tubes for all my bikes.

Then...
> For the 808s, I use Continental 60 mm extensions
> For the 404s, I use Continental 40 mm extensions
> For regular depth rims, I don't' use any extensions

This way I use the most popular size tubes at my LBS, never have to worry about what length value I need to get when I buy tubes, and all my tubes are interchangeable when I need to steal one from one bike to use on another...

Just be sure to carry the little valve tool in your seat pack on rides.

For tires, I use Gatorskins... great tires!
Add an ounce of Stan's to make them damn near impossible to flat.


Thanks for the reply and advice. What is Stan's? Does the valve tool you mentioned come with the extenders? Do you buy your tires, tubes, and extenders at your LBS or online? If online, where?

Thanks!
2014-10-06 2:01 PM
in reply to: metafizx

Member
14

Fort Worth
Subject: RE: Tire and Valve Extender Question for Zipps
Originally posted by metafizx

These are the sizes of the Zipp valve extenders..

48 mm (1.9") for 404 dimpled wheel sets.

72 mm (2.9") for dimpled 808 wheel sets.

98.26 mm (3.9") for dimpled 1080 wheel sets.

You can use a 80mm stem tube for the 404, but an extender is needed for anything larger (808, 1080)
For the extenders, use a tube with a valve larger than 30mm.

the rim depths for 404 57mm, 808 82mm, and 1080 108mm.

There are a number of brands for extenders, I have the Zipp ones, which many people don't like. One that is pretty nice is the Topeak.

video from Zipp on installing extenders:

http://www.youtube.com/watch?v=S9YLlZDIOkU


Thank you for the information! I read that some do not like the Zipp extenders. I'll check out the Topeak ones.
2014-10-06 2:07 PM
in reply to: 0

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Expert
1111
1000100
Albuquerque, NM
Subject: RE: Tire and Valve Extender Question for Zipps
Originally posted by Beniger

Originally posted by RockTractor

I use Continental 42 mm valve tubes for all my bikes.

Then...
> For the 808s, I use Continental 60 mm extensions
> For the 404s, I use Continental 40 mm extensions
> For regular depth rims, I don't' use any extensions

This way I use the most popular size tubes at my LBS, never have to worry about what length value I need to get when I buy tubes, and all my tubes are interchangeable when I need to steal one from one bike to use on another...

Just be sure to carry the little valve tool in your seat pack on rides.

For tires, I use Gatorskins... great tires!
Add an ounce of Stan's to make them damn near impossible to flat.


Thanks for the reply and advice. What is Stan's? Does the valve tool you mentioned come with the extenders? Do you buy your tires, tubes, and extenders at your LBS or online? If online, where?

Thanks!


Stan's is a tire/tube sealant (Stan's Link). It will seal up small holes on the fly. We have "goatheads" (Goathead Pic) here in NM. So, Stan's is nearly a must around here.

I bought everything at my LBS. I'm sure it could be found easy (and cheaper) online - but, the business / face-time at the LBS comes back ten fold when I need them to perform "heroics" on my bike to get me ready for something in a crunch!

Edited by RockTractor 2014-10-06 2:10 PM


2014-10-06 2:24 PM
in reply to: RockTractor

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Master
2855
20005001001001002525
Kailua, Hawaii
Subject: RE: Tire and Valve Extender Question for Zipps
Originally posted by RockTractor


Stan's is a tire/tube sealant (Stan's Link). It will seal up small holes on the fly. We have "goatheads" (Goathead Pic) here in NM. So, Stan's is nearly a must around here.




sorry not to derail the thread, but RockTractor, do you put the Stan's in the tube itself ? I use Stan's on my MTBs (as tubeless) but haven't on my road wheels...all tubes.
2014-10-06 2:29 PM
in reply to: Beniger

Master
5557
50005002525
, California
Subject: RE: Tire and Valve Extender Question for Zipps

Originally posted by Beniger
Originally posted by metafizx These are the sizes of the Zipp valve extenders.. 48 mm (1.9") for 404 dimpled wheel sets. 72 mm (2.9") for dimpled 808 wheel sets. 98.26 mm (3.9") for dimpled 1080 wheel sets. You can use a 80mm stem tube for the 404, but an extender is needed for anything larger (808, 1080) For the extenders, use a tube with a valve larger than 30mm. the rim depths for 404 57mm, 808 82mm, and 1080 108mm. There are a number of brands for extenders, I have the Zipp ones, which many people don't like. One that is pretty nice is the Topeak. video from Zipp on installing extenders: http://www.youtube.com/watch?v=S9YLlZDIOkU
Thank you for the information! I read that some do not like the Zipp extenders. I'll check out the Topeak ones.

The Zipp extenders aren't bad... I think a lot of people fail to put the plumber's tape on (as shown in the video), which makes a huge difference.

Also, the inside of the Zipp extenders match a hex wrench so you can use that to tighten or remove them if needed.

2014-10-06 3:33 PM
in reply to: metafizx

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Expert
1111
1000100
Albuquerque, NM
Subject: RE: Tire and Valve Extender Question for Zipps
Originally posted by metafizx

Originally posted by RockTractor

Stan's is a tire/tube sealant (Stan's Link). It will seal up small holes on the fly. We have "goatheads" (Goathead Pic) here in NM. So, Stan's is nearly a must around here.



sorry not to derail the thread, but RockTractor, do you put the Stan's in the tube itself ? I use Stan's on my MTBs (as tubeless) but haven't on my road wheels...all tubes.


Yep! I just remove the valve core (Continental tubes have removable cores) and use a 60 CC Luer lock syringe to "inject" 1 oz. of sealant into the tube. (The Leur Lock ends fits perfectly over the presta valve body.)

  • .. just last week I ran over something (probably a goat head) and it spat sealant for about 4 revolutions and then sealed back up.... priceless!
  • 2014-10-06 3:37 PM
    in reply to: spudone

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    Veteran
    740
    50010010025
    The Woodlands, TX
    Subject: RE: Tire and Valve Extender Question for Zipps
    Here are a couple links to everthing you ever wanted to know and a little bit more about extenders

    http://www.slowtwitch.com/Tech/Valve_Extender_How-To_3007.html

    and sealants in road bike tubes (part 1)

    http://www.slowtwitch.com/Products/Things_that_Roll/Tires/Sealant_T...

    and part 2

    http://www.slowtwitch.com/Products/Things_that_Roll/Tires/Sealant_T...



    2014-10-06 3:39 PM
    in reply to: spudone

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    Expert
    1111
    1000100
    Albuquerque, NM
    Subject: RE: Tire and Valve Extender Question for Zipps
    Originally posted by spudone

    Originally posted by Beniger
    Originally posted by metafizx These are the sizes of the Zipp valve extenders.. 48 mm (1.9") for 404 dimpled wheel sets. 72 mm (2.9") for dimpled 808 wheel sets. 98.26 mm (3.9") for dimpled 1080 wheel sets. You can use a 80mm stem tube for the 404, but an extender is needed for anything larger (808, 1080) For the extenders, use a tube with a valve larger than 30mm. the rim depths for 404 57mm, 808 82mm, and 1080 108mm. There are a number of brands for extenders, I have the Zipp ones, which many people don't like. One that is pretty nice is the Topeak. video from Zipp on installing extenders: http://www.youtube.com/watch?v=S9YLlZDIOkU
    Thank you for the information! I read that some do not like the Zipp extenders. I'll check out the Topeak ones.

    The Zipp extenders aren't bad... I think a lot of people fail to put the plumber's tape on (as shown in the video), which makes a huge difference.

    Also, the inside of the Zipp extenders match a hex wrench so you can use that to tighten or remove them if needed.




    I'm not a fan of the Zipp extenders... I hate that you can't tighten up the presta stem "nub" to get good closure or that you have to either remove the stem or stick something down in them to bleed off pressure.

    The Topeak extenders are a little better because you have a plunger to bleed off pressure. But, you still can't tighten the "nub" for good closure.

    I still vote for the Continental extenders.... you actually remove the valve core from the tube, install the extender, and then re-install the valve core on the end of the extender. What you end up with is just like the original valve... just longer. I guess the only downside is that you have to buy tubes with removable cores. For me, that's not a big deal since I buy the removable core tubes anyway so that I can add Stan's sealant.



    2014-10-06 3:59 PM
    in reply to: RockTractor

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    Extreme Veteran
    717
    500100100
    Chicago, USA
    Subject: RE: Tire and Valve Extender Question for Zipps
    Some things to consider:

    Having one type of valve length is good, gives you the most options, you can pick the best length extender for your particular rim. And zipp extenders do work great, if installed correctly. They are well-designed, simple and light.

    Also, an advantage of simple 'tube' type extenders (zipps and similar ones): a failure of your sealing job means you might have trouble filling your tube with air. Your seal needs to only work while filling your tire. But a failure of your sealing job with 'removable-core' type extenders? An immediate flat tire ... (your seal needs to work at very high pressure 24/7)

    2014-10-06 6:14 PM
    in reply to: RockTractor

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    Master
    2855
    20005001001001002525
    Kailua, Hawaii
    Subject: RE: Tire and Valve Extender Question for Zipps
    Originally posted by RockTractor


    The Topeak extenders are a little better because you have a plunger to bleed off pressure. But, you still can't tighten the "nub" for good closure.




    Topeak extenders do allow you to manipulate the valve, the shaft grips onto the tube valve and rotates to open/close...
    2014-10-07 8:50 AM
    in reply to: metafizx

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    Expert
    1111
    1000100
    Albuquerque, NM
    Subject: RE: Tire and Valve Extender Question for Zipps
    Originally posted by metafizx

    Originally posted by RockTractor


    The Topeak extenders are a little better because you have a plunger to bleed off pressure. But, you still can't tighten the "nub" for good closure.




    Topeak extenders do allow you to manipulate the valve, the shaft grips onto the tube valve and rotates to open/close...


    Well then - I like them a lot better!
    Can you also push it in to bleed off pressure?
    If so, then that would be a sweet solution...
    2014-10-07 12:26 PM
    in reply to: RockTractor

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    Master
    2855
    20005001001001002525
    Kailua, Hawaii
    Subject: RE: Tire and Valve Extender Question for Zipps
    Originally posted by RockTractor

    Originally posted by metafizx

    Originally posted by RockTractor


    The Topeak extenders are a little better because you have a plunger to bleed off pressure. But, you still can't tighten the "nub" for good closure.




    Topeak extenders do allow you to manipulate the valve, the shaft grips onto the tube valve and rotates to open/close...


    Well then - I like them a lot better!
    Can you also push it in to bleed off pressure?
    If so, then that would be a sweet solution...


    Yes ! I carry one in my tool bag in case my Zipp extenders cause trouble.
    2014-10-07 2:23 PM
    in reply to: #5057184

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    Member
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    Sylvania, Ga
    Subject: RE: Tire and Valve Extender Question for Zipps


    2014-10-07 6:04 PM
    in reply to: LukeBoswell

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    Cloverdale, BC
    Subject: RE: Tire and Valve Extender Question for Zipps

    For my 80mm wheels, I use Vittoria Latex tubes with a 51mm stem and Continental 40mm valve extenders.

    I carry a two 60mm Topeak valve extenders in my flat kit and two 42mm butyl tubes.

    2014-10-08 2:04 AM
    in reply to: DarkSpeedWorks

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    Regular
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    500100
    Portland, Oregon
    Subject: RE: Tire and Valve Extender Question for Zipps
    Originally posted by DarkSpeedWorks

    Also, an advantage of simple 'tube' type extenders (zipps and similar ones): a failure of your sealing job means you might have trouble filling your tube with air. Your seal needs to only work while filling your tire. But a failure of your sealing job with 'removable-core' type extenders? An immediate flat tire ... (your seal needs to work at very high pressure 24/7)




    If either one is installed incorrectly, you'll know right away. What do you imagine is the failure rate post install?

    With removable cores, bleeding off pressure is way easier, and you don't have to worry about the pin closing itself back up.
    I do concede that tube types are better if you get so many flats that you'll need to borrow a short-stemmed tube from a friend mid-ride. It would take an extra minute to pop over a removable core extender...but cmon, even IMCHOO only had a couple isolated tack traps, hah. If they are race-only wheels, than its even less of an issue.
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