Retrobike Forum Index

It is currently Wed Dec 07, 2016 9:48 am

* Login   * Register * Search  * FAQ



Post new topic This topic is locked, you cannot edit posts or make further replies.  [ 4919 posts ]  Go to page Previous  1 ... 205, 206, 207, 208, 209, 210, 211 ... 492  Next
Author Message
 Post subject:
PostPosted: Fri Oct 08, 2010 9:56 pm 
retrobike rider
retrobike rider
User avatar

Joined: Fri Aug 08, 2008 2:36 pm
Posts: 16747
Location: Yorkshire, England
daddymack wrote:
It's definately metal/weld type material I tried to grind it back to get the post down with limited success, hence my welding guess, It's not rust tho the bottom of the tube IS more muck type!
2nd pic shows it best but not perfectly it definitely restricts the diameter less than the sleeves even.


Probably need to start a thread see if anyone knows. Maybe it was reamed after a stuck seatpost or for a different size (e.g. to a now common 27.2) and stopped there, could be what you say a fix.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Oct 08, 2010 11:12 pm 
retrobike rider
retrobike rider

Joined: Sun Sep 23, 2007 11:22 pm
Posts: 7305
Location: Hove
daddymack wrote:
It's definately metal/weld type material I tried to grind it back to get the post down with limited success, hence my welding guess, It's not rust tho the bottom of the tube IS more muck type!
2nd pic shows it best but not perfectly it definitely restricts the diameter less than the sleeves even.

My advice would be to take it to a decent bike shop and ask them what they think the white stuff is and what the explanation could be.

I find it a puzzle. On the one hand, it looks as though the tube has only been reamed down to just above the white bubbles - in which case it needs to be fully reamed anyway. On the other hand, that may be just a coincidence. But what surely can't be a coincidence is if the white bubbling is at exactly the same depth as the bulging on the outside. And if the pin hole on the outside of the seat tube is exactly where there is a white bubble inside.

One possibility is that this is nothing to do with a crack, but there have been one or more small rust holes that have been repaired. It isn't impossible for rust to form underneath a paint blister and go right through the tube before it becomes apparent. If such a hole was small and there was no spread, a decision could quite properly have been taken that it didn't affect the structural integrity of the tube. In that case, it might have been filled with braze and repainted, on the basis that it was perfectly sound.

What doesn't make sense is for it not to have been deeply reamed. If I had that kind of repair, I would want a long seat post going as far down the tube as possible, well past the repair, so as to minimise the strain on the repair. As it stands at present, the strain on the repair is maximised. Looking on the bright side, perhaps it demonstrates the repairer's confidence in his work?

I know it sounds a bit dodgy, but people often drill things deliberately, to save weight.

Still, it's hard to judge from a photo (however good!), so this is just conjecture really. I feel sure an experienced bike shop proprietor would have seen something like this in the past.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Oct 08, 2010 11:44 pm 
Dirt Disciple

Joined: Thu Oct 07, 2010 11:05 pm
Posts: 12
Location: Herts
Lol ok the "reaming" from about 5-7" below the rim, was me with a grind wheel on a drill, the first 5 " are clean and original.
Maybe I should seek a pros advice (as such) but get suspicious of those making money from the business...


Top
 Profile  
 
 Post subject:
PostPosted: Sat Oct 09, 2010 12:30 am 
Devout Dirtbag
User avatar

Joined: Sat Sep 11, 2010 7:23 pm
Posts: 128
Location: Ensenada, Mexico
What would be a good price for a Giant CFM frame?

It has no marking as a 1 - 2 or 3 type, it doe not even has the Giant decals, it is bare...

gracias


Top
 Profile  
 
 Post subject:
PostPosted: Sat Oct 09, 2010 8:13 am 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider
User avatar

Joined: Fri Sep 05, 2008 6:36 pm
Posts: 4950
Location: Edinburgh
rudymexico wrote:
What would be a good price for a Giant CFM frame?

It has no marking as a 1 - 2 or 3 type, it doe not even has the Giant decals, it is bare...

gracias


Depends on if you are either buying or selling :wink: :lol:


Top
 Profile  
 
 Post subject: Re: CQP M-2000 crank set
PostPosted: Sat Oct 09, 2010 10:56 am 
King of the Skip Monkeys
King of the Skip Monkeys
User avatar

Joined: Wed Nov 07, 2007 4:34 pm
Posts: 26173
Location: Moomin Valley
retrokona wrote:
I (think I) have a CQP M-2000 crank set silver arms with purple spider, anyone have an idea of what it's worth?


they look more like Toplines


Top
 Profile  
 
 Post subject:
PostPosted: Sat Oct 09, 2010 3:57 pm 
Retro Guru
User avatar

Joined: Sat Dec 19, 2009 9:02 pm
Posts: 2793
Location: london
yes, I think they are toplines.
I've seen some silver ones in the for sale ad's up for £50
Any idea of a price for purple ones?


Top
 Profile  
 
 Post subject:
PostPosted: Sat Oct 09, 2010 4:07 pm 
retrobike rider
retrobike rider
User avatar

Joined: Fri Aug 08, 2008 2:36 pm
Posts: 16747
Location: Yorkshire, England
retrokona wrote:
yes, I think they are toplines.
I've seen some silver ones in the for sale ad's up for £50
Any idea of a price for purple ones?

£10 less as they're purple and scuff easier. Again they are purple ;)


Top
 Profile  
 
 Post subject:
PostPosted: Sat Oct 09, 2010 4:47 pm 
Retro Guru
User avatar

Joined: Mon Nov 05, 2007 11:58 pm
Posts: 303
Location: Milan - Italy
I have got a Shimano Airlines complete kit. A friend of mine wants to buy it but I don't know how much money I should ask him.
The kit is brande new, still in the original box.
I know that's very rare (especially in NOS condition) but I don't know the real value, could you help me?

Image


Top
 Profile  
 
 Post subject:
PostPosted: Sat Oct 09, 2010 10:36 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider
User avatar

Joined: Fri Jan 30, 2009 10:04 pm
Posts: 8771
Location: scotland
thinking about parting with my 2000 saracen x-ess jumpbike , still have the receipt from new :D

Image

it's a ss with just a v-brake on the rear

any ideas ? 8)


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic This topic is locked, you cannot edit posts or make further replies.  [ 4919 posts ]  Go to page Previous  1 ... 205, 206, 207, 208, 209, 210, 211 ... 492  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: Google Adsense [Bot] and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group