New bike w/ burr in seat tube

Quoted message said:

The bicycle manufacturer sent my shop a new frame and post. The General
Manager put the frame by the trash to throw it out as the Mfr. did not
want the problem frame back. I of course quickly moved the frame from
the trash to my car.

My question to you all is what method do you recommend to remove this
suspension post. The frame is nice enough that I think that I want to
use it but that seatpost is just a problem.

Josh McClure
Durst Cycles

Josh: First, I would make absolutely, positively certain that Cannondale
didn't want the original frame back. That seems quite odd; normally, when a
manufacturer sends out a new frame, they either want the original one back
or a piece of it (usually the section with the bottom bracket), which, of
course, renders it unusable.

Assuming that the frame truly is yours to play with, I'd put the seatpost in
a vise and use the frame for leverage to try and remove it. Make sure you
have at least a rear hub in the frame, so you don't accidentally bend the
tail section.

If it requires lubrication, you might see if the bottom bracket has an open
section between it and the seat tube, and drip it through.

But really, make absolutely certain that they don't want the frame back.
That just seems a bit strange to me; I'd hope a manufacturer wouldn't
consider their product quite so disposable.

--Mike-- Chain Reaction Bicycles
www.ChainReactionBicycles.com

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

Quoted message said:

Recently my shop got in a High-mid hybrid bike (Cannondale Road Warrior
800). After the seat post was inserted, the employee assembling the
bike found that he could not remove it and it was extremely difficult
to even turn it in the frame. This I think is a burr in the seat tube
(correct me if I am wrong) that caught on the post as both are
aluminum. An extenuating circumstance is that this post is of the
suspension variety.

The bicycle manufacturer sent my shop a new frame and post. The General
Manager put the frame by the trash to throw it out as the Mfr. did not
want the problem frame back. I of course quickly moved the frame from
the trash to my car.

My question to you all is what method do you recommend to remove this
suspension post. The frame is nice enough that I think that I want to
use it but that seatpost is just a problem.

Josh McClure
Durst Cycles

Josh McClure said:

Recently my shop got in a High-mid hybrid bike (Cannondale Road Warrior
800). After the seat post was inserted, the employee assembling the
bike found that he could not remove it and it was extremely difficult
to even turn it in the frame. This I think is a burr in the seat tube
(correct me if I am wrong) that caught on the post as both are
aluminum. An extenuating circumstance is that this post is of the
suspension variety.

The bicycle manufacturer sent my shop a new frame and post. The General
Manager put the frame by the trash to throw it out as the Mfr. did not
want the problem frame back. I of course quickly moved the frame from
the trash to my car.

My question to you all is what method do you recommend to remove this
suspension post. The frame is nice enough that I think that I want to
use it but that seatpost is just a problem.

Josh McClure
Durst Cycles

Warm the outside carefully with a hair drier and pour some cold water
onto the seat tube. You must do it as quickly as you can so that the
heat doesn't transfer.Also let some sort of lubicate like a very fine
oil soak into it. Do the heating and cooling process repeatedly so as to
enable the oil to work it's way in.

I am very certain that they do not want the frame back. My shop is a
big enough dealer that sometimes they throw parts and frames at us to
keep us happy and this was one of those situations.
I have already tried the vise (My coworker and I had the post in a vise
and it would not budge, It would not even rotate with minimal
friction.) As well as lubrication (We put Liquid wrench penetrating oil
into top of the frame, as well as feeding it into the bottom through
the BB. )
Looking for a redirect,
Josh

Josh McClure said:

I am very certain that they do not want the frame back. My shop is a
big enough dealer that sometimes they throw parts and frames at us to
keep us happy and this was one of those situations.
I have already tried the vise (My coworker and I had the post in a vise
and it would not budge, It would not even rotate with minimal
friction.) As well as lubrication (We put Liquid wrench penetrating oil
into top of the frame, as well as feeding it into the bottom through
the BB. )
Looking for a redirect,
Josh

How far into the frame is the post?
Can you cut off the top part of the post and just have the tube of the post remain?
Can you cut from the inside ot the post through it's wall for it's entire length? ( a careful cut with a reciprocating saw and a fine toothed blade).
If so, a couple of careful cuts , if not just one should free it.

On 23 Feb 2005 22:49:54 -0800, "Josh McClure" <[email hidden]>

may have said:

My question to you all is what method do you recommend to remove this
suspension post. The frame is nice enough that I think that I want to
use it but that seatpost is just a problem.

Since corrosion is presumably not an issue, a burr or some kind of
wedged foreign object is possibly at fault, as you had already
concluded. There is also the possibility that the inside of the tube
and the outside of the post have simply become stuck if neither was
greased and if both are non-anodized aluminum. This, in my opinion,
has a good chance of being the situation, in which case a nice, long
soak with a penetrant is the logical place to start. After that, the
hair-dryer trick is worth a shot, as is a repeat of clamping the post
in a vise and wiggling the frame. See if the seat tube is open to the
BB shell; if so, shoot a bunch of penetrant in through there and leave
the frame sitting upside down for at least a day or two.

Time and patience are your friends here; do nothing that is in the
least destructive until you have exhausted all other options. You
have no deadline for getting the post out, so there is no good reason
to take drastic action right away. Just patiently tapping lightly
with a hammer on the underside of a scrap seat's rails bolted to the
seatpost is as likely as many other methods to get the post
out...eventually.

--
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.

Thanks for all the good advice. now just to try it.

Josh McClure

Josh McClure said:

Recently my shop got in a High-mid hybrid bike (Cannondale Road Warrior
800). After the seat post was inserted, the employee assembling the
bike found that he could not remove it and it was extremely difficult
to even turn it in the frame. This I think is a burr in the seat tube
(correct me if I am wrong) that caught on the post as both are
aluminum. An extenuating circumstance is that this post is of the
suspension variety.

My 1993 Cannondale also has a very badly reamed seat tube. OTOH, my
300UKP Fuji had a perfectly prepared frame.

"Zog The Undeniable" <[email hidden]> a écrit dans le message de :
news:42203df5.0@entanet...

Quoted message said:

Josh McClure said:

Recently my shop got in a High-mid hybrid bike (Cannondale Road Warrior
800). After the seat post was inserted, the employee assembling the
bike found that he could not remove it and it was extremely difficult
to even turn it in the frame. This I think is a burr in the seat tube
(correct me if I am wrong) that caught on the post as both are
aluminum. An extenuating circumstance is that this post is of the
suspension variety.

My 1993 Cannondale also has a very badly reamed seat tube. OTOH, my
300UKP Fuji had a perfectly prepared frame.

You'd think that after twelve years, you would have done something about it
!
--
Bonne route,

Sandy
Verneuil-sur-Seine FR

Sandy said:

You'd think that after twelve years, you would have done something about
it !

I'm the only person who rides the bike, so a scratched seatpost inside
the frame is not a big concern.