|How to spread older frame to fit 8/9-speed?||killermustard|
Dec 1, 2002 9:10 PM
|As a learning experience, I'm picking up this 15-year-old Allez steel bike. I believe that the Allez is a 6-speed (it may be a 7), and want to fit it with a used 8-speed Sora gruppo that I'm also getting.
I need to spread the dropouts to fit the new 8-speed hubset/wheet. What's the best way to do this? Are there any articles on this subject. I would prefer to do it myself, but may go to a bike shop only if necessary.
|may not be needed...||C-40|
Dec 2, 2002 5:35 AM
|Many of us have used 130mm hubs on 126mm steel frames without permanently spreading the dropouts. Placing the wider hub in the dropouts will only cause about .005 inch misaligment of the dropout faces.
I tried spreading a steel frame myself using a threaded rod and some nuts to expand the dropouts (hoping that they would move equally). I spread the dropouts over an inch wider and all they did was spring back to the original width.
|may not be needed...||Rusty Coggs|
Dec 2, 2002 11:46 AM
|Me too with the 130 hubs in 126 droputs.Works fine. I had to spread 120mm dropouts to about 160mm in order to get them to stay at 126 for a 7 speed hub.Good steel can be springy stuff.Don't try that with aluminum.|
|"Piece of cake"||LinuxDude|
Dec 3, 2002 9:25 PM
|Just did this on my Bianchi "Limited" Columbus frame. All I had to do was spread the rear dropouts manually and insert the wheel. The difference is so minute that I wouldn't worry about it if you are dealing with a good steel frame. |
Someone on these boards had some issue with the rear derailleur not shifting to all sprockets. But I had no problems whatsoever.
|my 7 speed sirrus||rufus|
Dec 4, 2002 5:36 PM
|.i have a 7 speed sirrus, which is pretty much the same frame as the allez, if your allez is a late '80's one.
i had some drivetrain problems that were tough to track down, so i took it to the shop, and the mechanic stuck a nine-speed rear wheel in so we could eliminate the cassette as the cause. the wheel slipped in just fine, he could shift across the cluster(friction only, of course), and it appeared there would be no problems running that setup. because of that, i'm contemplating making the switch over to 9 speed when i can.