Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

User Tag List

Reply
 
Thread Tools Search this Thread
Old 12-19-08, 08:02 PM   #1
salty road
Senior Member
Thread Starter
 
salty road's Avatar
 
Join Date: Jul 2008
Location: Killadelphia
Bikes: Motobecane Messenger 64cm
Posts: 98
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Seat post bulge in seat tube.

Recently I read on sheldon brown's page that if a seat tube is improperly installed or too big that there would be a visible bulge at the top of the seat tube where the seat post penetrates the seat tube. Shortly After reading this I checked my bike and found a very slight warp (like sheldon the one was talking about) on the surface. This warp exists with the bikes stock seatpost. When purchasing my new shimano ultrega I made sure that it was the same size obv, but now I am feeling slightly reluctant to install my new saddle and seat post because I'm scared of the wear that it might cause to the frame. Is it possible that a manufacturer was stupid enough to shove a part to large into their own tubing? Is this a mistake on sheldons part? I feel a bit stupid posting this since I would consider my bike a beater, but it's just hard finding 64 cm frames, shes my behbey!
salty road is offline   Reply With Quote
Old 12-19-08, 08:04 PM   #2
sp00ki
partly metal, partly real
 
sp00ki's Avatar
 
Join Date: Aug 2005
Location: Philadelphia.
Bikes: Hummer H2
Posts: 3,597
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
pics.
sp00ki is offline   Reply With Quote
Old 12-19-08, 08:56 PM   #3
robcycle
Senior Member
 
Join Date: Jan 2007
Bikes:
Posts: 328
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
That sort of thing can also be caused by having your seat post over extended.

By and large, if it has been compromised, you can probably get away with running a seatpost that is long enough to engage the tube for a few inches below the damage.

-Rob.
robcycle is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 01:30 PM.