Cutting Carbon Steerer Tube

[[email protected]]

I have a carbon 1-1/8 threadless fork. I want to leave about three
inches and fill them up with spacers. Does anything more than an inch
or so of spacers present any problems. We are talking about a road bike
that will be used for local 20-40 mile rides. Thank you.

/Dave

 

[Boyle M. Owl]

[email protected] wrote:

> I have a carbon 1-1/8 threadless fork. I want to leave about three
> inches and fill them up with spacers. Does anything more than an inch
> or so of spacers present any problems. We are talking about a road bike
> that will be used for local 20-40 mile rides. Thank you.

I wouldn't think that it would be a problem. The combination of steer
tube and spacers is quite a bit more rigid, and sturdy, than the old
quill stems.

(donning Nomex biking shorts for another threaded vs. threadless flamewar)

I vote "do it"

It certainly will give you enough room to find out how long to cut it
later if needed.

--
BMO

 

[Zog The Undeniable]

[email protected] wrote:
> I have a carbon 1-1/8 threadless fork. I want to leave about three
> inches and fill them up with spacers. Does anything more than an inch
> or so of spacers present any problems. We are talking about a road bike
> that will be used for local 20-40 mile rides. Thank you.

With carbon steerers you should not use more spacers than the diameter
of the steerer tube, so that's 28.6mm.

 

[Lee]

"Zog The Undeniable" <[email protected]> wrote in message
news:42cccc68.0@entanet...
> [email protected] wrote:
>> I have a carbon 1-1/8 threadless fork. I want to leave about three
>> inches and fill them up with spacers. Does anything more than an inch or
>> so of spacers present any problems. We are talking about a road bike
>> that will be used for local 20-40 mile rides. Thank you.
>
> With carbon steerers you should not use more spacers than the diameter of
> the steerer tube, so that's 28.6mm.

Yes, that's the published spec of several fork manufacturers, probably wise
to follow that.

Lee

 

[Qui si parla Campagnolo]

[email protected] wrote:
> I have a carbon 1-1/8 threadless fork. I want to leave about three
> inches and fill them up with spacers. Does anything more than an inch
> or so of spacers present any problems. We are talking about a road bike
> that will be used for local 20-40 mile rides. Thank you.
>
> /Dave

Carbo steerer? Manufacturers all have a maximum of spacers under the
stem. We use 1.5 inches for 1 1/8inch steeres(40mm).

 

[Qui si parla Campagnolo]

Lee wrote:
> "Zog The Undeniable" <[email protected]> wrote in message
> news:42cccc68.0@entanet...
> > [email protected] wrote:
> >> I have a carbon 1-1/8 threadless fork. I want to leave about three
> >> inches and fill them up with spacers. Does anything more than an inch or
> >> so of spacers present any problems. We are talking about a road bike
> >> that will be used for local 20-40 mile rides. Thank you.
> >
> > With carbon steerers you should not use more spacers than the diameter of
> > the steerer tube, so that's 28.6mm.
>
> Yes, that's the published spec of several fork manufacturers, probably wise
> to follow that.
>
> Lee

Reynolds and most others use 1.5 inches for 1 1/8inch and 1.5 CM for 1
inch.

 

[[email protected]]

[email protected] wrote:
> I have a carbon 1-1/8 threadless fork. I want to leave about three
> inches and fill them up with spacers. Does anything more than an inch
> or so of spacers present any problems. We are talking about a road bike
> that will be used for local 20-40 mile rides. Thank you.

My made in Taiwan Performance all carbon fork has 2 cm of spacers under
the stem and 1.5 cm above the stem. On a 58 cm frame. Probably 3,000
miles on it in two years. Its just fine. Its been on far longer than
20-40 mile rides.

 

[[email protected]]

Answering my own question. Per fork manufacturer, Wound Up, there
should be no more than 44 mm of spacers. Thanks for the the helpful
replies.

[email protected] wrote:
> I have a carbon 1-1/8 threadless fork. I want to leave about three
> inches and fill them up with spacers. Does anything more than an inch
> or so of spacers present any problems. We are talking about a road bike
> that will be used for local 20-40 mile rides. Thank you.
>
> /Dave

 

[Frank Drackman]

<[email protected]> wrote in message
news:[email protected]...
> [email protected] wrote:
>> I have a carbon 1-1/8 threadless fork. I want to leave about three
>> inches and fill them up with spacers. Does anything more than an inch
>> or so of spacers present any problems. We are talking about a road bike
>> that will be used for local 20-40 mile rides. Thank you.
>
> My made in Taiwan Performance all carbon fork has 2 cm of spacers under
> the stem and 1.5 cm above the stem. On a 58 cm frame. Probably 3,000
> miles on it in two years. Its just fine. Its been on far longer than
> 20-40 mile rides.
>

My grandmother smoked 2 packs everyday of her life and...

 

[Phil, Squid-in-Training]

Frank Drackman wrote:
> <[email protected]> wrote in message
> news:[email protected]...
>> [email protected] wrote:
>>> I have a carbon 1-1/8 threadless fork. I want to leave about three
>>> inches and fill them up with spacers. Does anything more than an
>>> inch or so of spacers present any problems. We are talking about a
>>> road bike that will be used for local 20-40 mile rides. Thank you.
>>
>> My made in Taiwan Performance all carbon fork has 2 cm of spacers
>> under the stem and 1.5 cm above the stem. On a 58 cm frame. Probably
>> 3,000 miles on it in two years. Its just fine. Its been
>> on far longer than 20-40 mile rides.
>>
>
> My grandmother smoked 2 packs everyday of her life and...

C.Y.A. comes to mind...

--
Phil, Squid-in-Training