Saving frame.. stripped BB.

Mike-<< The other bonus is that if I fix it, I'll have a bike to ride while I'm there.

I've heard of threadless BB cartridges that I can use for this exact reason. BUT, I can't seem to
find any forsale. Does anyone know of places online that sell these. >><BR><BR>

Zephal has one that doesn't use the threads of the BB, but not very long spindle(116mm). Have you
tried to chase the threads with a good tap? may have enough metal to fix it.

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

Mike Beauchamp said:

Hey all.. I'm going up to my friend's house for a few days on "mini vacation". He has an older
Cannondale mountain bike, but he stripped the BB when trying to install a new cartridge himself. I
wouldnt' mind bringing some tools up there and just fixing it for him as a "thank you" since he's
letting me stay at his house. The other bonus is that if I fix it, I'll have a bike to ride while
I'm there.

I've heard of threadless BB cartridges that I can use for this exact reason. BUT, I can't seem to
find any forsale. Does anyone know of places online that sell these.. or possibly bike shops in
Toronto that would have these instock?

I don't know of any easy fixes if the threads are really gone. Two that are possible: (1) rethread
the BB shell to Italian threading, which is larger in diameter than the english that would have been
in the 'dale to begin with. (2) cut a 45deg. champfer in the BB shell and use a BB like the
Stronglight JP1000, which you can find at:
xxcycle.comshop.plOpen ↗
=&GO.x=17&GO.y=17 The older Mavic BBs used a similar mounting system and
are really nice as well.

Baird

Qui si parla Campagnolo said:

Zephal has one that doesn't use the threads of the BB, but not very long spindle(116mm).

Several people seem to make these, in varying spindle lengths; the problem I have is that I can't
find one short enough, especially since they are all quite hard to actually find for sale.

A word of warning; I wore out one of the YST ones in about 4,000 miles. Get another manufacturer's
product if possible.

I'll make a note of the make of my current one when it does go, and I remove it from the bicycle.
--
David Damerell <[email hidden]> Distortion Field!

In article said:

Hey all.. I'm going up to my friend's house for a few days on "mini vacation". He has an older
Cannondale mountain bike, but he stripped the BB when trying to install a new cartridge himself.

There's stripped and then there's stripped - many times when the threads are trashed you can still
thread a BB into it after chasing. This is one of the situations in which I would consider using
loctite on a BB.

You can find the cheesy YST no-thread BB's at biketoolsetc.com. That would be better than tossing
the frame.

A few months ago a poster here also recommended re-threading after applying alumaloy.
alumaloy.comalumaloy.comOpen ↗ Never tried it myself. A piloted tap set would still be needed, and
possibly a reamer as well. Seems like a lot of work for an "older Cannondale".

--Paul

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

Quoted message said:

In article <[email hidden]>, Mike Beauchamp <[email hidden]> wrote:

Quoted message said:

Quoted message said:

Hey all.. I'm going up to my friend's house for a few days on "mini vacation". He has an older
Cannondale mountain bike, but he stripped the BB when trying to install a new cartridge himself.

There's stripped and then there's stripped - many times when the threads are trashed you can still
thread a BB into it after chasing. This is one of the situations in which I would consider using
loctite on a BB.

You can find the cheesy YST no-thread BB's at biketoolsetc.com. That would be better than tossing
the frame.

A few months ago a poster here also recommended re-threading after applying alumaloy.
alumaloy.comalumaloy.comOpen ↗ Never tried it myself. A piloted tap set would still be needed, and
possibly a reamer as well. Seems like a lot of work for an "older Cannondale".

It's not that much work if you have the tools available. Clean the inside of the shell really well,
smear it with JB Weld, let it cure, then re-tap the threads. This is what JB Weld is for, and it
works. Alumaloy is probably the same thing, maybe with some aluminum dust mixed in.

Many years ago I rescued a steel frame by wetting out the inside of the shell with silver solder,
then re-tapping. I used silver solder because (hopefully) it's low-temp enough to not adversely
affect the metal.

Matt O.

Thanks for the advice guys.. Unfortunately I've never tapped threads before.. and I don't have the
tools required. I"ll look into it though..

Mike mikebeauchamp.commikebeauchamp.comOpen ↗

"Matt O'Toole" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

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

Quoted message said:

In article <[email hidden]>, Mike Beauchamp <[email hidden]>
wrote:

Quoted message said:

Quoted message said:

Hey all.. I'm going up to my friend's house for a few days on "mini vacation". He

has

Quoted message said:

Quoted message said:

Quoted message said:

an older Cannondale mountain bike, but he stripped the BB when trying

to

Quoted message said:

Quoted message said:

Quoted message said:

install a new cartridge himself.

There's stripped and then there's stripped - many times when the threads are trashed you can
still thread a BB into it after chasing. This is

one

Quoted message said:

Quoted message said:

of the situations in which I would consider using loctite on a BB.

You can find the cheesy YST no-thread BB's at biketoolsetc.com. That would be better than
tossing the frame.

A few months ago a poster here also recommended re-threading after applying alumaloy.
alumaloy.comalumaloy.comOpen ↗ Never tried it myself. A piloted tap set would still be needed, and
possibly a reamer as well. Seems like a lot of work for an "older Cannondale".

It's not that much work if you have the tools available. Clean the inside

of

Quoted message said:

the shell really well, smear it with JB Weld, let it cure, then re-tap the threads. This is what
JB Weld is for, and it works. Alumaloy is probably

the

Quoted message said:

same thing, maybe with some aluminum dust mixed in.

Many years ago I rescued a steel frame by wetting out the inside of the

shell

Quoted message said:

with silver solder, then re-tapping. I used silver solder because

(hopefully)

Quoted message said:

it's low-temp enough to not adversely affect the metal.

Matt O.