can dropout spacing be enlarged?

Quoted message said:

I have a brand new [never built] early 1990-ies
Bridgestone RB 1 57.5 cm [center of bottom bracket to top]
red frame and fork. The dropout spacing

is

Quoted message said:

127 mm. This was made for 7 or 8 speed cassettes. Can the
127 mm dropout spacing be enlarged to accept 9 or 10 speed
cassettes? Can any reputable

bike

Quoted message said:

shop do it or do I need to find a specialist? Thanks, Paul

Paul: Moving from 127mm (a "sloppy" 126, actually) to 130 is
very easily done by just about any bike shop. In the old
days, I used to think it required all manner of fancy tools
and jigging, until I saw someone's home movies & slide show
from a visit to the DeRosa factory in Italy (during the mid-
70s). I was *shocked* to see them aligning frames with long
2x4s!!! But then I thought about it and realized that a 2x4
is actually a pretty decent frame alignment tool. You can
get variable leverage, it's soft enough to not dent the seat
tube that you're leveraging against, and, after a few
practice runs, you get a very good feel for the yield point
(the place where you permanently move the stays).

I don't recommend this for home use unless you have a junker
frame you can practice on first. As with most things that
require a bit of a "touch" to get right, the first time you
try it, it might not go so well. Obviously, you need to do
both sides an equal amount, which means you measure the
dropout width ahead of time (after confirming the frame is
initially in alignment) and then move the first stay half
the required distance. Then switch sides and do the other
stay. If the frame was aligned properly before this, it will
remain so after.

By the way, don't try this with a bonded frame of any type,
nor is it wise to try and attempt it with an overbuilt (as
most are) aluminum frame. The bonded frame may lose
integrity at the bonded junction, and the overbuilt aluminum
frame may require more force than you can possibly manage.
This trick is best for old steel frames. Also, it's not a
good idea to try and spread from 120mm (really old standard)
to 130mm, unless you won't mind the dimpling that you'll
likely find. Likewise, not a good idea to move from 126mm to
135mm. But 126mm to 130mm is easy.

Oh, one last thing. Make sure you realign the dropouts
themselves, so the locknuts on the wheels sit flat against
them. Otherwise you'll likely end up with broken dropouts
not too far down the road.

--Mike-- Chain Reaction Bicycles
chainreactionbicycles.comchainreactionbicycles.comOpen ↗

"Paul Nevai" <[email hidden]> wrote in message -"]news:[email hidden]-
state.edu...

Quoted message said:

I have a brand new [never built] early 1990-ies
Bridgestone RB 1 57.5 cm [center of bottom bracket to top]
red frame and fork. The dropout spacing

is

Quoted message said:

127 mm. This was made for 7 or 8 speed cassettes. Can the
127 mm dropout spacing be enlarged to accept 9 or 10 speed
cassettes? Can any reputable

bike

Quoted message said:

shop do it or do I need to find a specialist? Thanks, Paul

"Paul Nevai" <[email hidden]> schreef in bericht
"]news:[email hidden]...

Quoted message said:

I have a brand new [never built] early 1990-ies
Bridgestone RB 1 57.5 cm [center of bottom bracket to top]
red frame and fork. The dropout spacing

is

Quoted message said:

127 mm. This was made for 7 or 8 speed cassettes. Can the
127 mm dropout spacing be enlarged to accept 9 or 10 speed
cassettes? Can any reputable

bike

Quoted message said:

shop do it or do I need to find a specialist? Thanks, Paul

If your frame is made of steel it can be done by hand (by
yourself) at no risk at all (personal expierence). If the
frame is alu, you can also do it yourself, but there is a
little risk involved.

Bert

--
Posted by news://news.nb.nu

Bert L.am said:

If the frame is alu, you can also do it yourself, but
there is a little risk involved.

I would seriously question that. For a very cheap alu frame
which you didn't expect to keep for long it might be worth
the risk, but you'd have to make the bend in one go -
multiple corrections would be very bad news indeed.

I wouldn't even dream of trying it on a Cannondale etc.

Quoted post said:

Originally posted by Paul Nevai
I have a brand new [never built] early 1990-ies Bridgestone
RB 1 57.5 cm [center of bottom bracket to top] red frame and
fork. The dropout spacing is 127 mm. This was made for 7 or
8 speed cassettes. Can the 127 mm dropout spacing be
enlarged to accept 9 or 10 speed cassettes? Can any
reputable bike shop do it or do I need to find a specialist?
Thanks, Paul

Steel RB1 can go to 130 mm.
You can read about it yourself and then follow the suggestions from Mike at Chain Reactions:
http://sheldonbrown.com/frame-spacing.html
It is nice to trust your shop to do it.
If it were an aluminum or a carbon frame I would NOT consider it.
There still are many 7 speed 126 mm HG hubs and HG cassettes available at reasonable prices.

I have a Hinault Look frame made of Reynolds 753. I have
heard somewere that this tubing can NOT be re-spaced.
Any ideas?

Quoted message said:

I have a Hinault Look frame made of Reynolds 753. I have
heard somewere that this tubing can NOT be re-spaced.
Any ideas?

It can. Phil Brown

gevans-<< I have a Hinault Look frame made of Reynolds 753.
I have heard somewere that this tubing can NOT be re-spaced.
Any ideas? >><BR><BR>

753 can and even 853 frames most often have a 753 rear
triangle. A 853 rear triangle 'can' be a tough one to
change.

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St.
Boulder, CO, 80302
(303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali
costruite eccezionalmente bene"

"Zog The Undeniable" <[email hidden]> schreef in bericht
news:409e90c3.0@entanet...

Quoted message said:

Bert L.am said:

If the frame is alu, you can also do it yourself, but
there is a little risk involved.

I would seriously question that. For a very cheap alu
frame which you didn't expect to keep for long it might be
worth the risk, but you'd have to make the bend in one go
- multiple corrections would be very bad news indeed.

I wouldn't even dream of trying it on a Cannondale etc.

you're right. Don't do it

--
Posted by news://news.nb.nu

On 9 May 2004 17:15:55 GMT, [email hidden] (Paul Nevai)

Quoted message said:

127 mm. This was made for 7 or 8 speed cassettes. Can the
127 mm dropout spacing be enlarged to accept 9 or 10 speed
cassettes? Can any reputable bike

For a 3mm difference, it's probably worth not touching at
all; just stick the wheel in there. It will be a slightly
tight fit.
--
Rick Onanian

[email hidden] (Paul Nevai) wrote in message news:<[email hidden]>...

Quoted message said:

I have a brand new [never built] early 1990-ies
Bridgestone RB 1 57.5 cm [center of bottom bracket to top]
red frame and fork. The dropout spacing is 127 mm. This
was made for 7 or 8 speed cassettes. Can the 127 mm
dropout spacing be enlarged to accept 9 or 10 speed
cassettes? Can any reputable bike shop do it or do I need
to find a specialist?

I have an RB1 of roughly the same vintage. Don't even bother
spreading it to 130 mm, the current road standard (8-9-
10sp). It isn't worth 2 minutes more of your time to even
think about it. I've never bothered to spread mine, and
don't have any troubles.

The Shimano freehubs _used to have_ (I don't know if they
still do), rounded nuts on them for the specific purpose of
easily popping a 130 mm hub into a 126 dropout. It works. I
have 4 steel roadbikes all with 126 mm dropouts, but all
paired with 130 mm Shimano hubs. It is so easy to get the
wheels in it never even occurs to me it is imperfect.

Now putting a 135 mm hub into a 126 frame is a little
different story -- one will really notice that the drop out
is too narrow. I've done that too, but once I got it in, it
seemed okay. Just a bit of a PITA.

(gwhite) said:

[email hidden] (Paul Nevai) wrote in message news:<[email hidden]-
state.edu>...

Quoted message said:

I have a brand new [never built] early 1990-ies
Bridgestone RB 1 57.5 cm [center of bottom bracket to
top] red frame and fork. The dropout spacing is 127 mm.
This was made for 7 or 8 speed cassettes. Can the 127 mm
dropout spacing be enlarged to accept 9 or 10 speed
cassettes? Can any reputable bike shop do it or do I need
to find a specialist?

I have an RB1 of roughly the same vintage. Don't even
bother spreading it to 130 mm, the current road standard
(8-9-10sp). It isn't worth 2 minutes more of your time to
even think about it. I've never bothered to spread mine,
and don't have any troubles.

The Shimano freehubs _used to have_ (I don't know if they
still do), rounded nuts on them for the specific purpose of
easily popping a 130 mm hub into a 126 dropout. It works. I
have 4 steel roadbikes all with 126 mm dropouts, but all
paired with 130 mm Shimano hubs. It is so easy to get the
wheels in it never even occurs to me it is imperfect.

Works fine with aluminum frames too, at least it's worked
for me with a 1989 (or so) Trek 1400 (bonded aluminum). I've
been riding it this way for about four years now. In fact I
just popped the wheel back into the frame an hour or so ago.
Easy to do!

jeverett3<AT>earthlink<DOT>net
home.earthlink.net~jeverett3Open ↗