Go Back  Bike Forums > Bike Forums > General Cycling Discussion
Reload this Page >

Presta tubes with solid valve core?

Notices
General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

Presta tubes with solid valve core?

Old 06-19-20, 06:31 PM
  #1  
karinbur
Senior Member
Thread Starter
 
Join Date: Jun 2005
Location: Sonoma County, California
Posts: 56

Bikes: Moots; Calfee Luna Pro; Co-motion Carerra

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Presta tubes with solid valve core?

Does anybody make 70x25 tubes anymore with a non-removable valve core? I'm ready to dump my Lezyne portable stand-up pump, and a CO2 assembly I wanted to buy also cautioned use with removable valve cores, since unscrewing it might pull them out. I used to request tubes with solid valve cores at the bike shop, but now I'm told no one is making them anymore? When I look at tubes online, the valve core type is not mentioned in the specs, except for the Specialized ones.
karinbur is offline  
Old 06-19-20, 07:01 PM
  #2  
Mulberry20
Senior Member
 
Join Date: Jun 2016
Posts: 401
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 214 Post(s)
Liked 71 Times in 53 Posts
Michelin does. The Aircomp is my favorite tube.

BTW you can use 23 tubes on 25 tires with no issues. In fact its easier to mount them.

Last edited by Mulberry20; 06-19-20 at 07:06 PM.
Mulberry20 is offline  
Likes For Mulberry20:
Old 06-19-20, 09:57 PM
  #3  
karinbur
Senior Member
Thread Starter
 
Join Date: Jun 2005
Location: Sonoma County, California
Posts: 56

Bikes: Moots; Calfee Luna Pro; Co-motion Carerra

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Thanks! I'll check them out. What a relief.
karinbur is offline  
Old 06-19-20, 10:11 PM
  #4  
Ross520
Senior Member
 
Join Date: Aug 2019
Posts: 316
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 172 Post(s)
Liked 169 Times in 97 Posts
Originally Posted by karinbur View Post
Does anybody make 70x25 tubes anymore with a non-removable valve core? I'm ready to dump my Lezyne portable stand-up pump, and a CO2 assembly I wanted to buy also cautioned use with removable valve cores, since unscrewing it might pull them out. I used to request tubes with solid valve cores at the bike shop, but now I'm told no one is making them anymore? When I look at tubes online, the valve core type is not mentioned in the specs, except for the Specialized ones.
I have a screw-on mini-pump that I'm afraid to use as well due to a very aggravating experience that I'd rather not even discuss involving removable cores.

I've thought about using loc-tite on them, although next time I'm due, I'll probably just purchase tubes with non-removable core like Mulberry suggested.
Ross520 is offline  
Old 06-19-20, 10:19 PM
  #5  
79pmooney
A Roadie Forever
 
79pmooney's Avatar
 
Join Date: Oct 2014
Location: Portland, OR
Posts: 8,436

Bikes: (2) ti TiCycles, 2007 w/ triple and 2011 fixed, 1979 Peter Mooney, ~1983 Trek 420 now fixed and ~1973 Raleigh Carlton Competition gravel grinder

Mentioned: 99 Post(s)
Tagged: 0 Thread(s)
Quoted: 2297 Post(s)
Likes: 0
Liked 710 Times in 495 Posts
Not an answer to your question but a question from me. Are the valves unscrewing because you are using a screw-on chuck? If so, why not just get a pump with a locking chuck instead or change the chuck out in favor of a Silca chuck? Good locking chucks last a long time and unlocking them to insert and remove means the gaskets last along time. Granted, not all locking pumps are good. The Zephal bike mounted ones are as is the floor Specialized. They have worked so well for me I haven't ventured further. I did spend 15 years screwing and unscrewing a high quality Italian floor pump. Finally got tired of wasting so much time doing something that took less than a second on bike pumps. (And yes, I unscrewed a few valves with that pump.)

Ben
79pmooney is offline  
Likes For 79pmooney:
Old 06-19-20, 10:45 PM
  #6  
Ross520
Senior Member
 
Join Date: Aug 2019
Posts: 316
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 172 Post(s)
Liked 169 Times in 97 Posts
Originally Posted by 79pmooney View Post
Not an answer to your question but a question from me. Are the valves unscrewing because you are using a screw-on chuck? If so, why not just get a pump with a locking chuck instead or change the chuck out in favor of a Silca chuck? Good locking chucks last a long time and unlocking them to insert and remove means the gaskets last along time. Granted, not all locking pumps are good. The Zephal bike mounted ones are as is the floor Specialized. They have worked so well for me I haven't ventured further. I did spend 15 years screwing and unscrewing a high quality Italian floor pump. Finally got tired of wasting so much time doing something that took less than a second on bike pumps. (And yes, I unscrewed a few valves with that pump.)

Ben
In my case, I'm extremely picky when it comes to features. It had been a long search for the ultimate mini for my needs before I came across this particular model. The pump in-question is the PERFECT for my me with the exception of that issue (carbon so it's very light, stores great in my jersey pocket, inflates very well for its size, has a nice hose that stores neatly inside of it, and has great aesthetics).

Silly first-world problems, I know. 😅
Ross520 is offline  
Old 06-20-20, 07:25 AM
  #7  
Mulberry20
Senior Member
 
Join Date: Jun 2016
Posts: 401
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 214 Post(s)
Liked 71 Times in 53 Posts
Originally Posted by karinbur View Post
Thanks! I'll check them out. What a relief.

Vredestein also has what you need in a 50 mm stem.

Mulberry20 is offline  
Old 06-20-20, 07:36 AM
  #8  
freeranger
Senior Member
 
freeranger's Avatar
 
Join Date: Jun 2005
Location: Kentucky
Posts: 1,684

Bikes: 06 Lemond Reno, 98 GT Timberline mtn.bike

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 150 Post(s)
Liked 198 Times in 135 Posts
Just a thought (hopefully not a useless one!)-I wonder if using a presta-schrader adapter would work--the adapter has a larger "tube" which might not grip the presta core as tightly?
freeranger is offline  
Old 06-20-20, 08:34 AM
  #9  
But its me
Senior Member
 
Join Date: Jul 2015
Location: Memphis, TN
Posts: 127

Bikes: A few older US made Cannondales and one Modern Soma Saga. Never enough.

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 22 Post(s)
Liked 12 Times in 8 Posts
Have you tried using a stem tool to tighten up the valve assembly? I love the Lezyne threaded pump connection, but had issues with valves flying out until tightening the valves. Have also used a small open ended wrench, although not sure the size off top of my head. No issues since then.
But its me is offline  
Old 06-20-20, 09:31 AM
  #10  
biker128pedal
Senior Member
 
biker128pedal's Avatar
 
Join Date: Jan 2007
Location: Eastern VA
Posts: 922

Bikes: Madone 5.0, Black Beta (Nashbar frame)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 53 Post(s)
Liked 34 Times in 26 Posts
I had the same problem. No matter how tight they would come out with the Lyzene pump. I used green low strength wicking Loctite. Working so far. Will get me through this batch of tubes I bought.
biker128pedal is offline  
Old 06-20-20, 11:57 AM
  #11  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 42,794

Bikes: 8

Mentioned: 194 Post(s)
Tagged: 0 Thread(s)
Quoted: 7386 Post(s)
Liked 999 Times in 630 Posts
Bike shops due to CV19 created shipping issues are short on re supply of tubes

but your typical P/V tube does not have a removable core..
fietsbob is online now  
Old 06-20-20, 12:28 PM
  #12  
77Eric
Senior Member
 
Join Date: May 2011
Location: Oakland
Posts: 57

Bikes: Cervelo R3

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Liked 8 Times in 5 Posts
Vittoria also makes tubes with a non-removable core. Iíve been using them with good results for a couple years now since I had the same issue with my Lezyne pump.
77Eric is offline  
Old 06-20-20, 06:05 PM
  #13  
veganbikes
Clark W. Griswold
 
Join Date: Mar 2014
Location: ,location, location
Posts: 6,127

Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Pink Klein MTB, Phil Wood VeloXS Frame (w/DA 7400), Cilo Road Frame, Proteus frame

Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
Quoted: 1491 Post(s)
Liked 303 Times in 221 Posts
They also make valve core tools, I will on occasion check mine but I don't use thread on pumps often.
veganbikes is offline  
Old 06-21-20, 09:39 AM
  #14  
Chuckles1
Senior Member
 
Join Date: Oct 2019
Posts: 120
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 50 Post(s)
Likes: 0
Liked 23 Times in 19 Posts
I've never had a removable core presta valve. I checked my stock of inexpensive tubes looking for a removable core so I could put some Slime in my rear wheel Gatorskin that I'm not sure I could change roadside without soapy water. Not a one in the lot. Maybe cause when I see a deal on tubes I buy a bunch, and probably haven't bought any in a few years.
Chuckles1 is offline  
Old 06-22-20, 11:09 AM
  #15  
wipekitty
vespertine member
 
wipekitty's Avatar
 
Join Date: Jul 2013
Location: nowhere, USA
Posts: 2,430

Bikes: Yes

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 672 Post(s)
Liked 196 Times in 149 Posts
All the Continental tubes I've purchased on Amazon came with a non-removable valve core. Same for Kenda.

I always considered the removable core a premium feature, only available on more expensive tubes!
wipekitty is offline  
Old 07-12-20, 05:21 PM
  #16  
shed
Junior Member
 
Join Date: Mar 2020
Posts: 24
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Likes: 0
Liked 4 Times in 4 Posts
Interesting the 25-32 Conti's I just purchased most definitely do.

I got a CO2 inflator for if I have a puncture, and I did a practice with a gas cylinder and no matter how tight I did it up, it came out when I unscrewed from the inflator.

Don't want to go through this on the side of the road, so will check out the ones mentioned. Anyone know on Speicalized.
shed is offline  
Old 07-14-20, 04:29 PM
  #17  
fourfa
Senior Member
 
Join Date: Mar 2015
Posts: 114
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 46 Post(s)
Liked 18 Times in 15 Posts
I've switched to 100% tubeless in recent years, so I've spent a lot of time unscrewing valve cores. It takes a tool and rather a lot of force! I've also got some pumps that screw on, and the forces involved are nowhere near enough to actually unscrew the core. Sounds like some lawyer wrote that warning label. Back in the real world, you can use removable-core tubes with no actual worries.
fourfa is offline  
Old 07-15-20, 09:25 AM
  #18  
Drew Eckhardt 
Senior Member
 
Drew Eckhardt's Avatar
 
Join Date: Apr 2010
Location: Mountain View, CA USA and Golden, CO USA
Posts: 6,157

Bikes: 97 Litespeed, 50-39-30x13-26 10 cogs, Campagnolo Ultrashift, retroreflective rims on SON28/PowerTap hubs

Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 472 Post(s)
Liked 200 Times in 149 Posts
Originally Posted by freeranger View Post
Just a thought (hopefully not a useless one!)-I wonder if using a presta-schrader adapter would work--the adapter has a larger "tube" which might not grip the presta core as tightly?
An adapter will unscrew cores at the Continental factory installation torque.

I discovered that when I wore out the Presta side of the rubber washer in my frame pump and relied on an adapter until I found a New Old Stock example of my favorite frame pump which was too small but allowed me to scavenge the discontinued small part.
Drew Eckhardt is offline  
Old 07-15-20, 08:10 PM
  #19  
stroudmears
Junior Member
 
Join Date: Jun 2017
Posts: 21
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Liked 0 Times in 0 Posts
On my first long ride, I prepared and bought two continental tubes because they were expensive and seemed reliable. I even practiced at home changing the tubes, just in case. Had tools, good lezyne pump and two tubes with me.
At the farthest point in the ride, my first flat ever. No problem, since I prepared. I followed all the steps I prepared for at home, easy. Just as I want to unscrew after pumping 120 times to get good pressure, the core comes loose and the entire thing deflates.
Kept spirit up, tried again, 120 strokes later, same thing. Literally did this for 6-7 times over the course of about 1.5 hours, until it finally stayed on. Very happy at that point.

Attached the wheel, continued riding, 15 minutes later, the new tube is now also flat. Another hole. The same thing happened with the other continental tube, but this time the valve core exploded and flew away somewhere. I got home because a friend came to help with tubes.
Since then, I only buy michellin aircomp or airstop tubes. Actually haven't had a flat with them in months, solid tubes.
stroudmears is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.