Presta Valve Stem Question

Discussion in 'Recumbent bicycles' started by 98gtw, Jan 22, 2003.

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  1. 98gtw

    98gtw Guest

    This is a multi-part message in MIME format.

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    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

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    <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"http://www.netacc.net/~helarson/">http://www.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>

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  2. 98gtw

    98gtw Guest

    This is a multi-part message in MIME format.

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    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

    <!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"http://www.netacc.net/~helarson/">http://www.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>

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  3. "98GTW" skrev...
    >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.
     
  4. "98GTW" skrev...
    >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.
     
  5. Jim H

    Jim H Guest

    Couldn't see the picture - in your HTML the .jpg has a hard-coded path to an "E:" drive.

    "98GTW" <[email protected]> wrote in message news:[email protected]... 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.

    Can I use these without some mechanism to lock them to the rim? If not, what part or piece
    do I need?

    Thanks.
     
  6. Jim H

    Jim H Guest

    Couldn't see the picture - in your HTML the .jpg has a hard-coded path to an "E:" drive.

    "98GTW" <[email protected]> wrote in message news:[email protected]... 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.

    Can I use these without some mechanism to lock them to the rim? If not, what part or piece
    do I need?

    Thanks.
     
  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 protected]> wrote in message = news:[email protected]... 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_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"mailto:[email protected]">[email protected]</A>> wrote in =
    message=20 <A=20 href=3D"news:[email protected]">news:[email protected]<=
    /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"http://www.netacc.net/~helarson/">http://www.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--
     
  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 protected]> wrote in message = news:[email protected]... 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_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"mailto:[email protected]">[email protected]</A>> wrote in =
    message=20 <A=20 href=3D"news:[email protected]">news:[email protected]<=
    /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"http://www.netacc.net/~helarson/">http://www.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>

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  9. 98gtw

    98gtw Guest

    This is a multi-part message in MIME format.

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    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 protected]> wrote in message = news:[email protected]... 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_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"mailto:[email protected]">[email protected]</A>> wrote = in
    message=20 <A=20
    =
    href=3D"news:[email protected]">news:[email protected]<= /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"http://www.netacc.net/~helarson/">http://www.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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  10. 98gtw

    98gtw Guest

    This is a multi-part message in MIME format.

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    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 protected]> wrote in message = news:[email protected]... 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_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"mailto:[email protected]">[email protected]</A>> wrote = in
    message=20 <A=20
    =
    href=3D"news:[email protected]">news:[email protected]<= /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"http://www.netacc.net/~helarson/">http://www.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--
     
  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
     
  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
     
  13. Dave Is Here

    Dave Is Here Guest

    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 protected]> replied> > >
    > 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.
     
  14. Dave Is Here

    Dave Is Here Guest

    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 protected]> replied> > >
    > 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.
     
  15. In article <[email protected]>, [email protected] says...
    > 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 http://www.clee.org
    - Bellaire, TX USA -
     
  16. In article <[email protected]>, [email protected] says...
    > 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 http://www.clee.org
    - Bellaire, TX USA -
     
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