Presta valve nut
10-21-19, 01:38 AM
#1
Member
Thread Starter
Join Date: Sep 2018
Posts: 42
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
Presta valve nut
Hi,
Rear wheel in my new wheelset is assymetric. I found that nut on Presta valve looks let say "stupid".
Is it neccessary to use that part? I do not have problem with pumping up tire without nut. To stop "rattling" I want to use heat shrink.
What do you think? Is there any reason that I should use it?
Rear wheel in my new wheelset is assymetric. I found that nut on Presta valve looks let say "stupid".
Is it neccessary to use that part? I do not have problem with pumping up tire without nut. To stop "rattling" I want to use heat shrink.
What do you think? Is there any reason that I should use it?
10-21-19, 01:51 AM
#2
Zoom zoom zoom zoom bonk
Join Date: Sep 2006
Location: New Zealand
Posts: 4,624
Bikes: Giant Defy, Trek 1.7c, BMC GF02, Fuji Tahoe, Scott Sub 35, Kona Rove, Trek Verve+2
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 551 Post(s)
Liked 722 Times
in
366 Posts
Have you got any idea what that thing weighs?
10-21-19, 05:38 AM
#4
On Your Left
Join Date: Nov 2011
Location: Long Island, New York, USA
Posts: 8,373
Bikes: Trek Emonda SLR, Sram eTap, Zipp 303
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 3004 Post(s)
Liked 2,433 Times
in
1,187 Posts
Are you talking about the stem nut?
Toss it.
Toss it.
Likes For GlennR:
10-21-19, 07:34 AM
#5
Senior Member
I prefer to buy tubes with no threads on the stem. Most presta inflators slide over a smooth stem more easily. No threads means no nut.
Likes For DaveSSS:
10-21-19, 07:49 AM
#6
• —
Join Date: Jun 2015
Location: Land of Pleasant Living
Posts: 12,215
Bikes: Shmikes
Mentioned: 59 Post(s)
Tagged: 0 Thread(s)
Quoted: 10148 Post(s)
Liked 5,841 Times
in
3,145 Posts
I find them useful on tubeless installations.
10-21-19, 08:12 AM
#7
Half way there
Join Date: Sep 2015
Location: North Carolina
Posts: 2,955
Bikes: Many, and the list changes frequently
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 985 Post(s)
Liked 879 Times
in
526 Posts
Why would their be any rattling? Do your rims have holes sized for Schraeder valves?
10-21-19, 11:43 AM
#9
Senior Member
Join Date: Oct 2018
Location: VA
Posts: 1,437
Bikes: SuperSix Evo | Revolt
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 733 Post(s)
Liked 815 Times
in
414 Posts
I find them useful when filling the tube, and I get some rattling without them, so I leave them on there (to the other person's question, my wheels are also presta only, but there is enough of a gap that it can rattle). On my TT wheels with smooth valvestems (latex), I use some electrical tape to keep them from rattling.
People removing them for "weight savings" crack me up. But as usual, do whatever works for you.
People removing them for "weight savings" crack me up. But as usual, do whatever works for you.
10-21-19, 01:06 PM
#10
On Your Left
Join Date: Nov 2011
Location: Long Island, New York, USA
Posts: 8,373
Bikes: Trek Emonda SLR, Sram eTap, Zipp 303
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 3004 Post(s)
Liked 2,433 Times
in
1,187 Posts
10-21-19, 01:13 PM
#11
• —
Join Date: Jun 2015
Location: Land of Pleasant Living
Posts: 12,215
Bikes: Shmikes
Mentioned: 59 Post(s)
Tagged: 0 Thread(s)
Quoted: 10148 Post(s)
Liked 5,841 Times
in
3,145 Posts
10-21-19, 01:15 PM
#12
On Your Left
Join Date: Nov 2011
Location: Long Island, New York, USA
Posts: 8,373
Bikes: Trek Emonda SLR, Sram eTap, Zipp 303
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 3004 Post(s)
Liked 2,433 Times
in
1,187 Posts
Likes For 02Giant:
10-21-19, 05:25 PM
#14
bocobiking
One time, my wife got a flat. Some guy, acting the expert, stopped, took charge, and changed her tube. After he left ("my work here is done, little lady"), she got maybe 50 yards before the tube went completely flat again. She called me to come get her and when I got there, I discovered that he had cranked the valve stem nut down so tight that it split the valve stem from the tube.
10-21-19, 05:26 PM
#15
Senior Member
Join Date: Jul 2010
Posts: 5,791
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 1020 Post(s)
Liked 463 Times
in
293 Posts
One time, my wife got a flat. Some guy, acting the expert, stopped, took charge, and changed her tube. After he left ("my work here is done, little lady"), she got maybe 50 yards before the tube went completely flat again. She called me to come get her and when I got there, I discovered that he had cranked the valve stem nut down so tight that it split the valve stem from the tube.
10-21-19, 07:17 PM
#16
Registered User
Join Date: Oct 2019
Posts: 467
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 188 Post(s)
Liked 276 Times
in
161 Posts
I carry a nut in my seat pack, just in case I were to ever need one. Haven't yet but it's there (I often help others and some have some funky set ups so you never know). I figure my rotational weight resistance if far less if it sits in the seat pack. 
10-21-19, 09:33 PM
#17
Passista
Join Date: Jul 2005
Posts: 7,595
Bikes: 1998 Pinarello Asolo, 1992 KHS Montaña pro, 1980 Raleigh DL-1, IGH Hybrid, IGH Utility
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 866 Post(s)
Liked 720 Times
in
395 Posts
That nut is a liability thing. It prevents the valve creeping outwards by centrifugal force at very high speed and bursting the tube.
Likes For Reynolds:
Likes For Bmach:
10-21-19, 11:06 PM
#19
Senior Member
Join Date: Apr 2012
Location: Nor Cal
Posts: 6,016
Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 1814 Post(s)
Likes: 0
Liked 923 Times
in
569 Posts
Maybe it's the wheel that looks stupid.
The nut might look better on an asymmetric wheel. (sorry)
I like liquid electrical tape for stopping the stem rattle.
The nut might look better on an asymmetric wheel. (sorry)
I like liquid electrical tape for stopping the stem rattle.
10-22-19, 11:46 AM
#20
Senior Member
Join Date: Jul 2013
Location: NJ, USA
Posts: 1,278
Bikes: two blacks, a blue and a white.
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 444 Post(s)
Liked 844 Times
in
408 Posts
So, you're on the side of the road and just changed a flat.
As a purist, you don't use a CO2 inflator; you've sentenced yourself to this little 8" wanna-be pump that rides in your jersey pocket and requires 1,832 strokes to put air in a 700x23 so the velominati dudes don't snicker at you when they fly by on the A-ride at 26mph.
And you finally got that damned clincher tire's wire over the rim without pinch-flatting the third tube or breaking the unbreakable blue plastic tire lever because you had to use four levers and stand on the last one or cracking the carbon wheel you bought from your dental hygienist.
So you wiggle and jiggle and twist and wobble and try to get the damn head of the baby pump onto the valve stem far enough to seal but it keeps psssffting all the air out the sides and nothing goes into the damn tube which still might have a new hole in it cause you didn't rub a friggin cotton ball all over the inside of the kevlar chili dark matter advanced composition tire. Mainly, because you keep pushing the valve stem down into the 70mm carbon fakie aero shell of a wheel and it disappears down the damn hole and the air is going pssssfttt pssftfttft out the side and suddenly....
Oh... that's what those little nuts are for. I just chucked over in the grass somewhere....
As a purist, you don't use a CO2 inflator; you've sentenced yourself to this little 8" wanna-be pump that rides in your jersey pocket and requires 1,832 strokes to put air in a 700x23 so the velominati dudes don't snicker at you when they fly by on the A-ride at 26mph.
And you finally got that damned clincher tire's wire over the rim without pinch-flatting the third tube or breaking the unbreakable blue plastic tire lever because you had to use four levers and stand on the last one or cracking the carbon wheel you bought from your dental hygienist.
So you wiggle and jiggle and twist and wobble and try to get the damn head of the baby pump onto the valve stem far enough to seal but it keeps psssffting all the air out the sides and nothing goes into the damn tube which still might have a new hole in it cause you didn't rub a friggin cotton ball all over the inside of the kevlar chili dark matter advanced composition tire. Mainly, because you keep pushing the valve stem down into the 70mm carbon fakie aero shell of a wheel and it disappears down the damn hole and the air is going pssssfttt pssftfttft out the side and suddenly....
Oh... that's what those little nuts are for. I just chucked over in the grass somewhere....
Likes For blacknbluebikes:
10-22-19, 12:01 PM
#21
On Your Left
Join Date: Nov 2011
Location: Long Island, New York, USA
Posts: 8,373
Bikes: Trek Emonda SLR, Sram eTap, Zipp 303
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 3004 Post(s)
Liked 2,433 Times
in
1,187 Posts
10-22-19, 02:00 PM
#23
Newbie racer
Join Date: Feb 2018
Posts: 3,406
Bikes: Propel, red is faster
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 1575 Post(s)
Liked 1,569 Times
in
974 Posts
I run latex tubes. Meaning often a low starting pressure. I'd rather not plunge the stem into the tire/wheel inserting the pump head. So, enter the reliable nut.
10-23-19, 03:35 AM
#24
Senior Member
Join Date: Jan 2014
Location: The banks of the River Charles
Posts: 2,028
Bikes: 2022 Salsa Beargrease, 2020 Seven Evergreen, 2019 Honey Allroads Ti, 2018 Seven Redsky XX, 2017 Trek Boon 7, 2014 Trek 520
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 695 Post(s)
Liked 910 Times
in
487 Posts
Does anyone make a ceramic coated aero nut?
10-23-19, 03:40 AM
#25
On Your Left
Join Date: Nov 2011
Location: Long Island, New York, USA
Posts: 8,373
Bikes: Trek Emonda SLR, Sram eTap, Zipp 303
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 3004 Post(s)
Liked 2,433 Times
in
1,187 Posts
Likes For GlennR: