adding threads

Quoted message said:

How difficult is it to add about 1/2 inch of threads
to a steel

steerer?

On top or bottom of current threads?

"Mark" <[email hidden]> wrote in message news:_86dnVEFgt39sNLdRVn-
[email hidden]...

Quoted message said:

How difficult is it to add about 1/2 inch of threads
to a steel

steerer?

Quoted message said:

Tia

Quoted post said:

Originally posted by Mark
How difficult is it to add about 1/2 inch of threads to a
steel steerer?

Tia

There is a die made just for this purpose.
Check your shop.
Park Tool makes the dies and handles.

Ronald said:

Quoted message said:

How difficult is it to add about 1/2 inch of threads
to a steel

steerer?

On top or bottom of current threads?

"Mark" <[email hidden]> wrote in message news:_86dnVEFgt39sNLdRVn-
[email hidden]...

Quoted message said:

How difficult is it to add about 1/2 inch of threads
to a steel

steerer?

Quoted message said:

Tia

bottom

Quoted message said:

Quoted message said:

Quoted message said:

How difficult is it to add about 1/2 inch of threads to
a steel

steerer?

Quoted message said:

Quoted message said:

On top or bottom of current threads?

bottom

Not that hard if you have the right tools (fi:
parktool.comFTS 1.shtmlOpen ↗). You propably
also want to shorten the steerer after which the toptreads
have to be chased again, you could also use spacers instead.
No use to get the tool i think if you won't be using it
again, better take it to a LBS who has the tools.

"Mark" <[email hidden]> wrote in message news:8_GdncPFrO-rpdLdRVn-
[email hidden]...

Quoted message said:

Ronald said:

Quoted message said:

How difficult is it to add about 1/2 inch of threads to
a steel

steerer?

On top or bottom of current threads?

"Mark" <[email hidden]> wrote in message news:_86dnVEFgt39sNLdRVn-
[email hidden]...

Quoted message said:

How difficult is it to add about 1/2 inch of threads to
a steel

steerer?

Quoted message said:

Tia

bottom

Mark said:

How difficult is it to add about 1/2 inch of threads to a
steel steerer?

A good bike shop can do it. I've heard it's a fairly slow
process because those are big threads.

"Zog The Undeniable" <[email hidden]> wrote in message
news:404f6027.0@entanet...

Quoted message said:

Mark said:

How difficult is it to add about 1/2 inch of threads to
a steel steerer?

A good bike shop can do it. I've heard it's a fairly slow
process because those are big threads.

It's a bit of a daunting task really. Like threading a
bottom bracket. You don't want to mess it up and it's tough
cutting new threads correctly on the fork steerer. It's not
impossible or rocket science or anything, but there's
definitely some hesitation there, especially if you only do
it once or twice a month. I'd really recommend having a
shopt do it for you. The dies are expensive and you're
unlikely to do it more than a few times in your life as a
do-it-yourselfer.

Cheers,

Scott..

Mark said:

How difficult is it to add about 1/2 inch of threads to a
steel steerer?

Tia

Assuming that it's a steel steerer with clean existing
threads and no other issues and assuming you want the new
threads below the old ones ( not above them) it's about $25
difficult.

--
Andrew Muzi www.yellowjersey.org Open every day since 1
April, 1971

Ronald said:

You propably also want to shorten the steerer after which
the toptreads have to be chased again, you could also use
spacers instead.

No, in order to get the top cup down where it needs to be,
you will have to cut threads -- or else this would not be
a problem.

Quoted message said:

Quoted message said:

Quoted message said:

>How difficult is it to add about 1/2 inch of threads to
>a steel

steerer?

On top or bottom of current threads?

On top? Into what would you cut threads on top of the
current ones? Seeing as how the top of the threads is the
top of the tube.

--

David L. Johnson

__o | We have a record of conquest, colonization and
expansion _`\(,_ | unequaled by any people in the
Nineteenth Century. We are not to (_)/ (_) | be curbed
now. --Henry Cabot Lodge, 1895

"Ronald" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Quoted message said:

How difficult is it to add about 1/2 inch of threads to
a steel

steerer?

On top or bottom of current threads?

How can you add threads on top? Adding a section of tubing?

Phil

On Wed, 10 Mar 2004 14:15:43 -0500, "S. Anderson"

may have said:

"Zog The Undeniable" <[email hidden]> wrote in
message news:404f6027.0@entanet...

Quoted message said:

Mark said:

How difficult is it to add about 1/2 inch of threads to
a steel steerer?

A good bike shop can do it. I've heard it's a fairly slow
process because those are big threads.

It's a bit of a daunting task really. Like threading a
bottom bracket. You don't want to mess it up and it's tough
cutting new threads correctly on the fork steerer. It's not
impossible or rocket science or anything, but there's
definitely some hesitation there, especially if you only do
it once or twice a month. I'd really recommend having a
shopt do it for you. The dies are expensive and you're
unlikely to do it more than a few times in your life as a
do-it-yourselfer.

One more word of caution: the cheap Hozan dies are nearly
impossible for a novice to use safely.

You may find that you can procure a replacement fork
more economically than you can have more threads cut, in
some cases.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

On Thu, 11 Mar 2004 02:18:44 GMT, "Phil, back at home"

may have said:

"Ronald" <[email hidden]> wrote in
message "]news:[email hidden]...

Quoted message said:

Quoted message said:

How difficult is it to add about 1/2 inch of threads to
a steel

steerer?

On top or bottom of current threads?

How can you add threads on top? Adding a section of tubing?

Asking the question is not frivolous, IMO; I have had people
bring me things like that in the past. You would be amazed
at the ability of the tech-illiterate to expect that
impossible or incredibly difficult things are routine, and
it is wise to not to assume that an unfamiliar inquirer is
well clued about such things.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

"Mark" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Ronald said:

Quoted message said:

How difficult is it to add about 1/2 inch of threads to
a steel

steerer?

On top or bottom of current threads?

"Mark" <[email hidden]> wrote in message news:_86dnVEFgt39sNLdRVn-
[email hidden]...

Quoted message said:

How difficult is it to add about 1/2 inch of threads to
a steel

steerer?

Quoted message said:

Tia

bottom

I had the same need about a year ago, and was looking for an
alternative to getting the expensive dies to do it, when the
light came on and I realized this was likely a fairly simple
task for any competent machinist. I found one that day and
paid him about $10 to cut about 1" of nice clean threads
below the existing ones. Pitch and depth were just like the
existing threads.

Cal

A Muzi <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

Mark said:

How difficult is it to add about 1/2 inch of threads to
a steel steerer?

Tia

Assuming that it's a steel steerer with clean existing
threads and no other issues and assuming you want the new
threads below the old ones ( not above them) it's about
$25 difficult.

Easy for a good shop. $15 to $30. Ask for Campy cutting
tools (cutting oil, and correct cutting technique). Make
sure you bring along your threaded cup to test the
"finished" diameter/new threads. They can adjust the final
diameter. Mine came out oversized the first time.

Quoted message said:

Quoted message said:

You propably also want to shorten the steerer after
which the toptreads have to be chased

again,

Quoted message said:

Quoted message said:

you could also use spacers instead.

No, in order to get the top cup down where it needs to be,
you will

have

Quoted message said:

to cut threads -- or else this would not be a problem.

You're pulling things out of perspective, i said ALSO, so
beside cutting the extra threads he'll propably also wants
to shorten the steerertube because the topcup move down the
steerer and more threads get exposed on top. He can solve
this by cutting of the excess or added spacers.

Quoted message said:

Quoted message said:

Quoted message said:

>>How difficult is it to add about 1/2 inch of threads
>>to a steel
>
> steerer?
>
> On top or bottom of current threads?

On top? Into what would you cut threads on top of the
current ones? Seeing as how the top of the threads is the
top of the tube.

That's why is asked, because he was just asking about
ADDING 1/2 inch of threads to a steerer and this isn't
possible on top.

"David L. Johnson" <[email hidden]> wrote in
message "]news:[email hidden]...

Quoted message said:

Ronald said:

You propably also want to shorten the steerer after
which the toptreads have to be chased

again,

Quoted message said:

Quoted message said:

you could also use spacers instead.

No, in order to get the top cup down where it needs to be,
you will

have

Quoted message said:

to cut threads -- or else this would not be a problem.

Quoted message said:

Quoted message said:

>>How difficult is it to add about 1/2 inch of threads
>>to a steel
>
> steerer?
>
> On top or bottom of current threads?

On top? Into what would you cut threads on top of the
current ones? Seeing as how the top of the threads is the
top of the tube.

--

David L. Johnson

__o | We have a record of conquest, colonization and
expansion
_`\(,_ | unequaled by any people in the Nineteenth Century.
We

are not to

Quoted message said:

(_)/ (_) | be curbed now. --Henry Cabot Lodge, 1895

Chris Zacho The Wheelman said:

I thought fork sterrer threads were rolled, not cut.

No, they're cut.

Quoted message said:

Wouldn't this require the use of a lathe?

Cut threads may be done with a lathe, but for forks it makes
more sense to use a guided die made for the purpose.

(There's no convenient way to chuck a fork into a
typical lathe.)

Rolled threads, as on spokes, are made by sharp rollers that
roll around the object to be threaded. This does not involve
a lathe. Generally the work piece stays stationary and the
rolling heads roll around it.

Sheldon "Threads" Brown +--------------------------------------------------
+
| Conscience is the inner voice which warns us | that
| someone might be looking. | --H.L. Mencken |
+--------------------------------------------------+ Harris
Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX
617-244-1041 harriscyclery.comharriscyclery.comOpen ↗ Hard-to-find parts
shipped Worldwide captainbike.comcaptainbike.comOpen ↗
sheldonbrown.comsheldonbrown.comOpen ↗

14 Mar 2004 12:55:05 -0500 Sheldon Brown said:

Rolled threads, as on spokes, are made by sharp rollers
that roll around the object to be threaded. This does not
involve a lathe. Generally the work piece stays stationary
and the rolling heads roll around it.

In all the cases that I'm familiar with, rolled threads
are made by rolling the part between 2 flat plates which
have the proper V-groove pattern in them. In such a
method one plate is stationary, one translates, and the
workpiece rotates and translates at half the speed of the
moving die plate.

I'm sure it could be done the way you describe, but you'd
either have to have 3 die rollers, or control a lot of
degrees of motion very carefully.

The 2 plate method turns out to be simpler, and therefore,
cheaper and more reliable.

-
-----------------------------------------------
Jim Adney [email hidden] Madison, WI 53711 USA
-----------------------------------------------

I said:

Quoted message said:

Rolled threads, as on spokes, are made by sharp rollers
that roll around the object to be threaded. This does not
involve a lathe. Generally the work piece stays stationary
and the rolling heads roll around it.

Jim Adney replied:

Quoted message said:

In all the cases that I'm familiar with, rolled threads
are made by rolling the part between 2 flat plates which
have the proper V-groove pattern in them. In such a
method one plate is stationary, one translates, and the
workpiece rotates and translates at half the speed of the
moving die plate.

I'm sure it could be done the way you describe, but you'd
either have to have 3 die rollers, or control a lot of
degrees of motion very carefully.

The 2 plate method turns out to be simpler, and therefore,
cheaper and more reliable.

I was thinking of shop-type spoke threading tools I've seen,
which have, indeed had 3 such rollers.

I don't doubt that the two plate system would be superior
on an industrial scale, but it isn't something that I've
run across.

Sheldon "Rolling" Brown +---------------------------------------------
+
| I give myself sometimes admirable advice, | but I am
| incapable of taking it. | --Lady Mary Wortley Montagu |
+---------------------------------------------+ Harris
Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX
617-244-1041 harriscyclery.comharriscyclery.comOpen ↗ Hard-to-find parts
shipped Worldwide captainbike.comcaptainbike.comOpen ↗
sheldonbrown.comsheldonbrown.comOpen ↗

Sheldon Brown said:

Quoted message said:

Quoted message said:

Rolled threads, as on spokes, are made by sharp rollers
that roll around the object to be threaded. This does
not involve a lathe. Generally the work piece stays
stationary and the rolling heads roll around it.

Quoted message said:

Jim Adney replied:

Quoted message said:

In all the cases that I'm familiar with, rolled threads
are made by rolling the part between 2 flat plates which
have the proper V-groove pattern in them. In such a
method one plate is stationary, one translates, and the
workpiece rotates and translates at half the speed of the
moving die plate.

-snip-

and more Sheldon:

Quoted message said:

I was thinking of shop-type spoke threading tools I've
seen, which have, indeed had 3 such rollers. I don't doubt
that the two plate system would be superior on an
industrial scale, but it isn't something that I've run
across. Sheldon "Rolling" Brown

What a dreadful tool! (I have one, too.)

I've never seen any other threading machinery besides the
Cyclo spoke threader with such an arrangement.

Have you ever cut and threaded a wheel's worth of spokes in
that beast? Scutwork!

--
Andrew Muzi www.yellowjersey.org Open every day since 1
April, 1971

14 Mar 2004 23:52:55 -0600 A Muzi said:

and more Sheldon:

Quoted message said:

I was thinking of shop-type spoke threading tools I've
seen, which have, indeed had 3 such rollers. I don't
doubt that the two plate system would be superior on an
industrial scale, but it isn't something that I've run
across. Sheldon "Rolling" Brown

What a dreadful tool! (I have one, too.)

I've never seen any other threading machinery besides the
Cyclo spoke threader with such an arrangement.

Have you ever cut and threaded a wheel's worth of spokes in
that beast? Scutwork!

Andy should have also mentioned the Phil Wood spoke threader
he also has, which rolls the spoke between two grooved
plates. A truly beautiful device.

-
-----------------------------------------------
Jim Adney [email hidden] Madison, WI 53711 USA
-----------------------------------------------