Recumbent bicycles · Public discussion

Presta Valve Stem Question

98gtw · 2003-01-22T21:52:13+00:00

This is a multi-part message in MIME format. ------=_NextPart_000_0011_01C2BB9F.9EA2AA90 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I bought some new tubes recently (on e-bay) that have smooth, long valve = stems http://www.netacc.net/~helarson/ (crudely-built site alert ;-) ) Never seen anything quite like them. My present tubes have small nuts to = lock them to the rim.=20 Can I use these without some mechanism to lock them to the rim? If not, = what part or piece do I need? Thanks.=20 ------=_NextPart_000_0011_01C2BB9F.9EA2AA90 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I bought some new tubes recently (on e-bay) that have smooth, long = valve=20 stems http://www.netacc.net/~helarson= / (crudely-built site alert ;-) ) Never seen anything quite like them. My present tubes have small nuts = to lock=20 them to the rim. Can I use these without some mechanism to lock them to the rim? = If not,=20 what part or piece do I need? Thanks. ------=_NextPart_000_0011_01C2BB9F.9EA2AA90--

Started by 98gtw · 22 January 2003 · Last activity 22 January 2003 · 16 posts · 3,544 views

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01 / Original postPresta Valve Stem Question98gtw · 22 Jan 2003 02 / This pagePosts 1–16Page 1 of 1 · chronological order 03 / Latest replyPost #16Cletus D . Lee · 22 Jan 2003

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Original section: Recumbent bicycles
Published: 22 January 2003
Last activity: 22 January 2003
Original author: 98gtw
Posts: 16
Discussion status: Public discussion
Total views: 3,544
Views / 30 days: 0
Topics: Tyre pressure

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Original post
98gtw
Archived post

22 January 2003, 21:52 UTC #1

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Content-Transfer-Encoding: quoted-printable
I bought some new tubes recently (on e-bay) that have smooth, long valve = stems
netacc.net~helarson
(crudely-built site alert ;-) )
Never seen anything quite like them. My present tubes have small nuts to = lock them to the rim.=20
Can I use these without some mechanism to lock them to the rim? If not, = what part or piece
do I need?
Thanks.=20
------=_NextPart_000_0011_01C2BB9F.9EA2AA90 Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META
http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML
5.50.4912.300" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY>
<DIV><FONT face=3DArial size=3D2><FONT size=3D2>
<DIW>I bought some new tubes recently (on e-bay) that have smooth, long = valve=20 stems</P>
<DIX><A=20 href=3D"netacc.net~helarson">netacc.net~helarson= /</A></P>
<DIY>(crudely-built site alert ;-) )</P>
<DIZ>Never seen anything quite like them. My present tubes have small nuts = to lock=20 them to
the rim. </P>
<DIZ><BR>Can I use these without some mechanism to lock them to the rim? = If not,=20 what part or
piece do I need?</P>
<DIZ>Thanks. </P></FONT></FONT></DIV></BODY></HTML>
------=_NextPart_000_0011_01C2BB9F.9EA2AA90--

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98gtw
Archived post

22 January 2003, 21:52 UTC #2

This is a multi-part message in MIME format.
------=_NextPart_000_0011_01C2BB9F.9EA2AA90 Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
I bought some new tubes recently (on e-bay) that have smooth, long valve = stems
netacc.net~helarson
(crudely-built site alert ;-) )
Never seen anything quite like them. My present tubes have small nuts to = lock them to the rim.=20
Can I use these without some mechanism to lock them to the rim? If not, = what part or piece
do I need?
Thanks.=20
------=_NextPart_000_0011_01C2BB9F.9EA2AA90 Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META
http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML
5.50.4912.300" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY>
<DIV><FONT face=3DArial size=3D2><FONT size=3D2>
<DIW>I bought some new tubes recently (on e-bay) that have smooth, long = valve=20 stems</P>
<DIX><A=20 href=3D"netacc.net~helarson">netacc.net~helarson= /</A></P>
<DIY>(crudely-built site alert ;-) )</P>
<DIZ>Never seen anything quite like them. My present tubes have small nuts = to lock=20 them to
the rim. </P>
<DIZ><BR>Can I use these without some mechanism to lock them to the rim? = If not,=20 what part or
piece do I need?</P>
<DIZ>Thanks. </P></FONT></FONT></DIV></BODY></HTML>
------=_NextPart_000_0011_01C2BB9F.9EA2AA90--

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Mikael Seierup
Archived post

22 January 2003, 21:52 UTC #3

"98GTW" skrev...
Quoted message said:
Can I use these without some mechanism to lock them to the rim? If not, what part or piece do I

need?
I did on my bike. Just slightly annoying to pump.
M.

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Mikael Seierup
Archived post

22 January 2003, 21:52 UTC #4

"98GTW" skrev...
Quoted message said:
Can I use these without some mechanism to lock them to the rim? If not, what part or piece do I

need?
I did on my bike. Just slightly annoying to pump.
M.

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Jim H
Archived post

22 January 2003, 21:52 UTC #5

Couldn't see the picture - in your HTML the .jpg has a hard-coded path to an "E:" drive.
"98GTW" <[email hidden]> wrote in message "]news:[email hidden]... I bought some new
tubes recently (on e-bay) that have smooth, long valve stems
netacc.net~helarson
(crudely-built site alert ;-) )
Never seen anything quite like them. My present tubes have small nuts to lock them to the rim.
Can I use these without some mechanism to lock them to the rim? If not, what part or piece
do I need?
Thanks.

Report
Jim H
Archived post

22 January 2003, 21:52 UTC #6

Couldn't see the picture - in your HTML the .jpg has a hard-coded path to an "E:" drive.
"98GTW" <[email hidden]> wrote in message "]news:[email hidden]... I bought some new
tubes recently (on e-bay) that have smooth, long valve stems
netacc.net~helarson
(crudely-built site alert ;-) )
Never seen anything quite like them. My present tubes have small nuts to lock them to the rim.
Can I use these without some mechanism to lock them to the rim? If not, what part or piece
do I need?
Thanks.

Report
Eugene Cottrell
Archived post

22 January 2003, 21:52 UTC #7

This is a multi-part message in MIME format.
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Content-Transfer-Encoding: quoted-printable
These stems are long enough ( 2" )that they are probably made for aero = rims. Regardless, the nuts
on presta valves serve no useful purpose and = make the probability of getting a pinch flat much
greater if the nut is = tightened when you first pump the tire up. To pump the tire up from a = flat
condition, just hold the stem out through the hole with one thumb = pressing the tread of the tire
as you attach the pump to the valve with = the other hand. (man, that's easier to do than explain) I
can send you = a picture if necessary.
Gene
"98GTW" <[email hidden]> wrote in message = "]news:[email hidden]... I bought some
new tubes recently (on e-bay) that have smooth, long = valve stems
netacc.net~helarson
(crudely-built site alert ;-) )
Never seen anything quite like them. My present tubes have small nuts = to lock them to
the rim.=20
Can I use these without some mechanism to lock them to the rim? If = not, what part or piece
do I need?
Thanks.=20
------=_NextPart_000_0043_01C2BBE4.CD453E40 Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META
http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML
6.00.2719.2200" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff>
<DIV><FONT face=3D"Courier New" size=3D2>These stems are long enough ( = 2" )that they=20 are
probably made for aero rims. Regardless, the nuts on = presta=20 valves serve no
useful purpose and make the probability of getting a = pinch flat=20 much greater if the nut
is tightened when you first pump the tire = up. To=20 pump the tire up from a flat
condition, just hold the stem out = through the=20 hole with one
thumb pressing the tread of the tire as you = attach=20 the pump to the valve with
the other hand. (man, that's easier to = do than=20 explain) I can send you a
picture if necessary.</FONT></DIV>
<DV><FONT face=3D"Courier New" size=3D2></FONT> </DIV>
<DVI><FONT face=3D"Courier New" size=3D2>Gene</FONT></DIV>
<DVII><FONT face=3D"Courier New" size=3D2></FONT> </DIV>
<DVIII> </DIV>
<DIX> </DIV>
<DX>"98GTW" <<A=20 href=3D""][email hidden]">[email hidden]</A>> wrote in =
message=20 <A=20 href=3D""]news:[email hidden]">"]news:[email hidden]<=
/A>...</DIV> <BLOCKQUOTE dir=3Dltr=20 style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px;
MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV><FONT face=3DArial size=3D2><FONT size=3D2>
<DIW>I bought some new tubes recently (on e-bay) that have smooth, long = valve=20 stems</P>
<DIX><A=20
=
href=3D"netacc.net~helarson">netacc.net~helarson= /</A></P>
<DIY>(crudely-built site alert ;-) )</P>
<DIZ>Never seen anything quite like them. My present tubes have small = nuts to=20 lock them to
the rim. </P>
<DIZ><BR>Can I use these without some mechanism to lock them to the rim? = If not,=20 what part or
piece do I need?</P>
<DIZ>Thanks. </P></FONT></FONT></DIV></BLOCKQUOTE></BODY></HTML>
------=_NextPart_000_0043_01C2BBE4.CD453E40--

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Eugene Cottrell
Archived post

22 January 2003, 21:52 UTC #8

This is a multi-part message in MIME format.
------=_NextPart_000_0043_01C2BBE4.CD453E40 Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
These stems are long enough ( 2" )that they are probably made for aero = rims. Regardless, the nuts
on presta valves serve no useful purpose and = make the probability of getting a pinch flat much
greater if the nut is = tightened when you first pump the tire up. To pump the tire up from a = flat
condition, just hold the stem out through the hole with one thumb = pressing the tread of the tire
as you attach the pump to the valve with = the other hand. (man, that's easier to do than explain) I
can send you = a picture if necessary.
Gene
"98GTW" <[email hidden]> wrote in message = "]news:[email hidden]... I bought some
new tubes recently (on e-bay) that have smooth, long = valve stems
netacc.net~helarson
(crudely-built site alert ;-) )
Never seen anything quite like them. My present tubes have small nuts = to lock them to
the rim.=20
Can I use these without some mechanism to lock them to the rim? If = not, what part or piece
do I need?
Thanks.=20
------=_NextPart_000_0043_01C2BBE4.CD453E40 Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META
http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML
6.00.2719.2200" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff>
<DIV><FONT face=3D"Courier New" size=3D2>These stems are long enough ( = 2" )that they=20 are
probably made for aero rims. Regardless, the nuts on = presta=20 valves serve no
useful purpose and make the probability of getting a = pinch flat=20 much greater if the nut
is tightened when you first pump the tire = up. To=20 pump the tire up from a flat
condition, just hold the stem out = through the=20 hole with one
thumb pressing the tread of the tire as you = attach=20 the pump to the valve with
the other hand. (man, that's easier to = do than=20 explain) I can send you a
picture if necessary.</FONT></DIV>
<DV><FONT face=3D"Courier New" size=3D2></FONT> </DIV>
<DVI><FONT face=3D"Courier New" size=3D2>Gene</FONT></DIV>
<DVII><FONT face=3D"Courier New" size=3D2></FONT> </DIV>
<DVIII> </DIV>
<DIX> </DIV>
<DX>"98GTW" <<A=20 href=3D""][email hidden]">[email hidden]</A>> wrote in =
message=20 <A=20 href=3D""]news:[email hidden]">"]news:[email hidden]<=
/A>...</DIV> <BLOCKQUOTE dir=3Dltr=20 style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px;
MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV><FONT face=3DArial size=3D2><FONT size=3D2>
<DIW>I bought some new tubes recently (on e-bay) that have smooth, long = valve=20 stems</P>
<DIX><A=20
=
href=3D"netacc.net~helarson">netacc.net~helarson= /</A></P>
<DIY>(crudely-built site alert ;-) )</P>
<DIZ>Never seen anything quite like them. My present tubes have small = nuts to=20 lock them to
the rim. </P>
<DIZ><BR>Can I use these without some mechanism to lock them to the rim? = If not,=20 what part or
piece do I need?</P>
<DIZ>Thanks. </P></FONT></FONT></DIV></BLOCKQUOTE></BODY></HTML>
------=_NextPart_000_0043_01C2BBE4.CD453E40--

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98gtw
Archived post

22 January 2003, 22:06 UTC #9

This is a multi-part message in MIME format.
------=_NextPart_000_001F_01C2BC64.E607AF50 Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
I verified the pump works just fine last night. The information about = the use of the "locknut" was
also very helpful.
I suppose I now <must> go buy some aero rims! :-) Dave
"98GTW" <[email hidden]> wrote in message = "]news:[email hidden]... I bought some
new tubes recently (on e-bay) that have smooth, long = valve stems
netacc.net~helarson
(crudely-built site alert ;-) )
Never seen anything quite like them. My present tubes have small nuts = to lock them to
the rim.=20
Can I use these without some mechanism to lock them to the rim? If = not, what part or piece
do I need?
Thanks.=20
------=_NextPart_000_001F_01C2BC64.E607AF50 Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META
http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML
5.50.4912.300" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>I verified the pump works just = fine last=20 night. The
information about the use of the "locknut" was also very=20 helpful.</FONT></DIV>
<DV><FONT face=3DArial size=3D2></FONT> </DIV>
<DVI><FONT face=3DArial size=3D2>I suppose I now <must> go buy = some aero=20 rims!
<STRONG><FONT size=3D4>:-)</FONT></STRONG></FONT></DIV>
<DVII><STRONG><FONT face=3DArial size=3D4>Dave</FONT></STRONG></DIV> <BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px
solid; MARGIN-RIGHT: 0px">
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIW>"98GTW" <<A=20 href=3D""][email hidden]">[email hidden]</A>> wrote = in
message=20 <A=20
=
href=3D""]news:[email hidden]">"]news:[email hidden]<= /A>...</DIV>
<DIX><FONT face=3DArial size=3D2><FONT size=3D2>
<DIY>I bought some new tubes recently (on e-bay) that have smooth, long = valve=20 stems</P>
<DIZ><A=20
=
href=3D"netacc.net~helarson">netacc.net~helarson= /</A></P>
<DIZ>(crudely-built site alert ;-) )</P>
<DIZ>Never seen anything quite like them. My present tubes have small = nuts to=20 lock them to
the rim. </P>
<DIZ><BR>Can I use these without some mechanism to lock them to the rim? = If not,=20 what part or
piece do I need?</P>
<DIZ>Thanks. </P></FONT></FONT></DIV></BLOCKQUOTE></BODY></HTML>
------=_NextPart_000_001F_01C2BC64.E607AF50--

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98gtw
Archived post

22 January 2003, 22:06 UTC #10

This is a multi-part message in MIME format.
------=_NextPart_000_001F_01C2BC64.E607AF50 Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
I verified the pump works just fine last night. The information about = the use of the "locknut" was
also very helpful.
I suppose I now <must> go buy some aero rims! :-) Dave
"98GTW" <[email hidden]> wrote in message = "]news:[email hidden]... I bought some
new tubes recently (on e-bay) that have smooth, long = valve stems
netacc.net~helarson
(crudely-built site alert ;-) )
Never seen anything quite like them. My present tubes have small nuts = to lock them to
the rim.=20
Can I use these without some mechanism to lock them to the rim? If = not, what part or piece
do I need?
Thanks.=20
------=_NextPart_000_001F_01C2BC64.E607AF50 Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META
http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML
5.50.4912.300" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>I verified the pump works just = fine last=20 night. The
information about the use of the "locknut" was also very=20 helpful.</FONT></DIV>
<DV><FONT face=3DArial size=3D2></FONT> </DIV>
<DVI><FONT face=3DArial size=3D2>I suppose I now <must> go buy = some aero=20 rims!
<STRONG><FONT size=3D4>:-)</FONT></STRONG></FONT></DIV>
<DVII><STRONG><FONT face=3DArial size=3D4>Dave</FONT></STRONG></DIV> <BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px
solid; MARGIN-RIGHT: 0px">
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIW>"98GTW" <<A=20 href=3D""][email hidden]">[email hidden]</A>> wrote = in
message=20 <A=20
=
href=3D""]news:[email hidden]">"]news:[email hidden]<= /A>...</DIV>
<DIX><FONT face=3DArial size=3D2><FONT size=3D2>
<DIY>I bought some new tubes recently (on e-bay) that have smooth, long = valve=20 stems</P>
<DIZ><A=20
=
href=3D"netacc.net~helarson">netacc.net~helarson= /</A></P>
<DIZ>(crudely-built site alert ;-) )</P>
<DIZ>Never seen anything quite like them. My present tubes have small = nuts to=20 lock them to
the rim. </P>
<DIZ><BR>Can I use these without some mechanism to lock them to the rim? = If not,=20 what part or
piece do I need?</P>
<DIZ>Thanks. </P></FONT></FONT></DIV></BLOCKQUOTE></BODY></HTML>
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Charles Gaffen
Archived post

22 January 2003, 22:06 UTC #11

Basically Gene is saying to hold onto the stem until you can get the pump head as far down the stem
as possible. Lock it in place and pump. I have had plenty of these tubes and they are just fine.
Only thing is if your gasket/o-ring on the pump head is worn, it may slip off. Chas

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Charles Gaffen
Archived post

22 January 2003, 22:06 UTC #12

Basically Gene is saying to hold onto the stem until you can get the pump head as far down the stem
as possible. Lock it in place and pump. I have had plenty of these tubes and they are just fine.
Only thing is if your gasket/o-ring on the pump head is worn, it may slip off. Chas

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Dave Is Here
Archived post

22 January 2003, 22:06 UTC #13

Hi Cletus Smooth Presta valve stems are a standard Michelin part. I use them in both long and short
stem 622s Here is a pic of the part. www.doctorvision.com/bikee/michelintube.jpg
The valve stem is replaceable, although a new tube can be had for $4-5.
Dave Balfour
Cletus D. Lee <[email hidden]> replied> > >
Quoted message said:
I've never seen any 'threadless' Presta valves. I have some Schwalbe tubes that are only threaded
near the rim. An inflated tube will maintain its position without a locking nut. If your (road)
pump can inflate it to a sufficient pressure without slipping off, I'd say do not concern
yourself with trivial issues like threaded valve stems.

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Dave Is Here
Archived post

22 January 2003, 22:06 UTC #14

Hi Cletus Smooth Presta valve stems are a standard Michelin part. I use them in both long and short
stem 622s Here is a pic of the part. www.doctorvision.com/bikee/michelintube.jpg
The valve stem is replaceable, although a new tube can be had for $4-5.
Dave Balfour
Cletus D. Lee <[email hidden]> replied> > >
Quoted message said:
I've never seen any 'threadless' Presta valves. I have some Schwalbe tubes that are only threaded
near the rim. An inflated tube will maintain its position without a locking nut. If your (road)
pump can inflate it to a sufficient pressure without slipping off, I'd say do not concern
yourself with trivial issues like threaded valve stems.

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Cletus D . Lee
Archived post

22 January 2003, 22:07 UTC #15

In article <[email hidden]>, [email hidden] says...
Quoted message said:
Hi Cletus Smooth Presta valve stems are a standard Michelin part. I use them in both long and
short stem 622s Here is a pic of the part. www.doctorvision.com/bikee/michelintube.jpg
leave it to the french to find a way to be different.
--
Cletus D. Lee Bacchetta Giro Lightning Voyager clee.orgclee.org
- Bellaire, TX USA -

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Cletus D . Lee
Archived post

22 January 2003, 22:07 UTC #16

In article <[email hidden]>, [email hidden] says...
Quoted message said:
Hi Cletus Smooth Presta valve stems are a standard Michelin part. I use them in both long and
short stem 622s Here is a pic of the part. www.doctorvision.com/bikee/michelintube.jpg
leave it to the french to find a way to be different.
--
Cletus D. Lee Bacchetta Giro Lightning Voyager clee.orgclee.org
- Bellaire, TX USA -

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