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

Is there a trick to using Presta adapters?

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!

Is there a trick to using Presta adapters?

Old 09-20-18, 02:24 PM
  #1  
no motor?
Senior Member
Thread Starter
 
no motor?'s Avatar
 
Join Date: Dec 2005
Location: Chicagoland
Posts: 6,034

Bikes: Specialized Hardrock

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 926 Post(s)
Liked 43 Times in 33 Posts
Is there a trick to using Presta adapters?

I used my Topek Joe Blow floor pump to inflate both tires (using Scchrader valves) on my bike to 80 psi yesterday without a problem. I used the same pump on the front tire of my girlfriends bike to the same 80 psi using the Presta adapter that was on the bike when she bought it, something I've done before. No real problem there beyond needing to put more air in her tires than mine. When I tried to do the same thing in the back I couldn't get more than 60 psi in with pumping like a madman, easily pumping 2 - 3 times more air than I did for the front tire. When I stopped to rest the pressure dropped to 20 psi. This happened a couple of times until we quickly removed the air hose when we got to 60 psi, and the tire seemed to retain that air after we were finally able to ride instead of pump even more air into the rear tire. I've used these same adapters on the same tires for a couple of years and have never had this much trouble, what was wrong? Neither one of us could hear any air leaking out, and nothing seemed wrong beyond the problems I already mentioned.
no motor? is offline  
Old 09-20-18, 02:48 PM
  #2  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 41,499

Bikes: 8

Mentioned: 183 Post(s)
Tagged: 0 Thread(s)
Quoted: 6728 Post(s)
Likes: 0
Liked 144 Times in 122 Posts
schrader adapters on presta tubes? the stem is a check valve, so air goes in opens the check valve,
you hear air leaking out of the hose ,

but the valve in the tube stem shuts

if the hose pressure drops below the pressure in the tube..

there are adapters with O rings, they may seal better.

Silca , Italy , made an adapter to screw on your Schrader valve and use a presta pump..

convert to woods /dunlop valve tubes ? Schwalbe makes Those , too .. same rim stem hole as schrader

https://en.wikipedia.org/wiki/Dunlop_valve .../



...





....

Last edited by fietsbob; 09-20-18 at 02:54 PM.
fietsbob is offline  
Old 09-21-18, 05:38 AM
  #3  
Maelochs
Senior Member
 
Maelochs's Avatar
 
Join Date: Oct 2015
Posts: 11,489

Bikes: 2015 Workswell 066, 2014 Dawes Sheila, 1983 Cannondale 500, 1984 Raleigh Olympian, 2007 Cannondale Rize 4, 2017 Fuji Sportif 1 LE

Mentioned: 134 Post(s)
Tagged: 0 Thread(s)
Quoted: 5422 Post(s)
Liked 96 Times in 63 Posts
I used to use Schrader adapters on Presta valves for a long while. There is a tiny rubber o-ring inside the Schrader adapter, and as soon as that o-ring falls out (and it can if you aren't careful removing the adapter. if you do lose the o-ring the air will leak out almost as fast as it goes in.

If that's not it .... maybe you damaged the Presta valve while screwing on the Schrader adapter.
Maelochs is online now  
Old 09-21-18, 07:39 AM
  #4  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 3,544

Bikes: Schwinn Varsity

Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1214 Post(s)
Liked 29 Times in 19 Posts
I don't know what a Presta adaptor is. And, you don't need any kind of adapter with a Joe Blow pump, works with Schrader and Presta without any adapters... so what are you doing?
trailangel is offline  
Old 09-21-18, 08:04 AM
  #5  
WizardOfBoz
Generally bewildered
 
WizardOfBoz's Avatar
 
Join Date: Aug 2015
Location: Eastern PA, USA
Posts: 1,776

Bikes: 2014 Trek Domane 6.9, 1999 LeMond Zurich, 1978 Schwinn Superior

Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 613 Post(s)
Liked 8 Times in 7 Posts
Check the o-ring as Maelochs suggests. If that's ok, it could be that you put the adapter on correctly, but the air hose was mashed too tightly up against the adapter and was holding the core in a position that was just open a little. Hard to pump into, and leaks out. Put the adapter on and experiment with how you hook up the pump head to the adapter.

Or, if your pump is the model that trailangel is thinking of, use the Schrader Presta port on the pump head directly.

I had an issue with tubeless where the stem had clogged with sealer. Tried to pump into the tire without realizing this and blew up the hose on my pump.

Last edited by WizardOfBoz; 09-21-18 at 09:35 AM.
WizardOfBoz is offline  
Old 09-21-18, 08:43 AM
  #6  
tagaproject6
Senior Member
 
tagaproject6's Avatar
 
Join Date: Aug 2009
Posts: 8,249

Bikes: Wilier Izoard XP (Record);Cinelli Xperience (Force);Specialized Allez (Rival);Bianchi Via Nirone 7 (Centaur); Colnago AC-R Disc;Colnago V1r Limited Edition;De Rosa King 3 Limited(Force 22);DeRosa Merak(Red):Pinarello Dogma 65.1 Hydro(Di2)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 436 Post(s)
Liked 36 Times in 23 Posts
Originally Posted by trailangel View Post
IAnd, you don't need any kind of adapter with a Joe Blow pump, works with Schrader and Presta without any adapters... so what are you doing?
This!
tagaproject6 is offline  
Old 09-21-18, 10:31 AM
  #7  
no motor?
Senior Member
Thread Starter
 
no motor?'s Avatar
 
Join Date: Dec 2005
Location: Chicagoland
Posts: 6,034

Bikes: Specialized Hardrock

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 926 Post(s)
Liked 43 Times in 33 Posts
Originally Posted by trailangel View Post
I don't know what a Presta adaptor is. And, you don't need any kind of adapter with a Joe Blow pump, works with Schrader and Presta without any adapters... so what are you doing?
This is a Presta adapter. https://www.amazon.com/Vktech-Converter-Schrader-Bicycle-Adaptor/dp/B00DW444C6?ref_=fsclp_pl_dp_4 It allows you to inflate a tire using a Presta valve using a Schrader head on the pump. I was attempting to use the pump to increase the pressure of the gasses inside the tube relative to the gasses outside the tube.
no motor? is offline  
Old 09-21-18, 04:04 PM
  #8  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 41,499

Bikes: 8

Mentioned: 183 Post(s)
Tagged: 0 Thread(s)
Quoted: 6728 Post(s)
Likes: 0
Liked 144 Times in 122 Posts
Get this one, keep it with your S/V pump..
the top (hose barbed) end screws off,
that is schrader thread..
https://www.ebay.com/itm/232877142889


Last edited by fietsbob; 09-21-18 at 04:08 PM.
fietsbob is offline  
Old 09-21-18, 04:25 PM
  #9  
Maelochs
Senior Member
 
Maelochs's Avatar
 
Join Date: Oct 2015
Posts: 11,489

Bikes: 2015 Workswell 066, 2014 Dawes Sheila, 1983 Cannondale 500, 1984 Raleigh Olympian, 2007 Cannondale Rize 4, 2017 Fuji Sportif 1 LE

Mentioned: 134 Post(s)
Tagged: 0 Thread(s)
Quoted: 5422 Post(s)
Liked 96 Times in 63 Posts
As a few folks noted above ... most pumps nowadays have reversible or convertible chucks, so you can adapt the pump to the valve. Does yours?
Maelochs is online now  
Old 09-25-18, 10:45 AM
  #10  
no motor?
Senior Member
Thread Starter
 
no motor?'s Avatar
 
Join Date: Dec 2005
Location: Chicagoland
Posts: 6,034

Bikes: Specialized Hardrock

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 926 Post(s)
Liked 43 Times in 33 Posts
Originally Posted by Maelochs View Post
As a few folks noted above ... most pumps nowadays have reversible or convertible chucks, so you can adapt the pump to the valve. Does yours?
The one I have at home does, the one I left at her house had an adapter on the chuck that is a good 25 years old. I'd rather she use the adapters on the wheels if she inflates her own tires and wanted to make sure this is still possible.
no motor? is offline  
Old 09-25-18, 11:05 AM
  #11  
rosefarts
Senior Member
 
Join Date: May 2015
Posts: 631
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 257 Post(s)
Likes: 0
Liked 40 Times in 12 Posts
I remove the o-ring from my presta valve adapters. The ring is too tight and more times than not, will screw the valve closed when screwing the adapter onto the valve.

It doesn't leak at all.

Of course the only time I use it is to seat beads on tubeless tires. My 20 year old floor pump has both valve types. Even Walmart pumps have both.

Once presta chucks for an air compressor drop under $40, adapters will be obsolete for me.
rosefarts is offline  
Old 09-25-18, 11:30 AM
  #12  
MattTheHat 
Senior Member
 
MattTheHat's Avatar
 
Join Date: Aug 2018
Location: Allen, TX
Posts: 496

Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 146 Post(s)
Liked 34 Times in 26 Posts
I keep a Presta adapter in my saddle bag in case I have to inflate a tire at a corn-venience store. And I used them for a couple of weeks before I found a Presta air chuck for my garage compressor. Sometimes they thread right on and sometimes they don't. I found a slightly bent Presta core was the problem. I guess it's possible that a slight misalignment could cause the Presta core to leak a bit but it sure seems like you would have heard it.

-Matt
MattTheHat 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

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