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


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-15-03, 08:30 PM   #1
Dan O'Connor
Newbie
Thread Starter
 
Join Date: Mar 2003
Bikes:
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Shimano Vs Sram 7 speed hubs

I am planning a comuter bike around a 7 speed rear hub. Does anyone out there have experience with both the Shimano and Sram hubs? Is one better than the other? Lighter? Least complicated linkage? Thanks.
Dan O'Connor is offline   Reply With Quote
Old 03-16-03, 12:51 AM   #2
Raiyn
I drink your MILKSHAKE
 
Raiyn's Avatar
 
Join Date: Jul 2002
Location: St. Petersburg, FL
Bikes: 2003 Specialized Rockhopper FSR Comp, 1999 Specialized Hardrock Comp FS, 1971 Schwinn Varsity
Posts: 15,061
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Are we talking a 7 speed internally geared hub (I'm assuming so)or a hub capable of supporting a 7 speed cassette?
__________________
Raiyn is offline   Reply With Quote
Old 03-16-03, 10:55 AM   #3
Dan O'Connor
Newbie
Thread Starter
 
Join Date: Mar 2003
Bikes:
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'll be going with the internally geared hub
Dan O'Connor is offline   Reply With Quote
Old 03-17-03, 06:17 AM   #4
MichaelW
Senior Member
 
Join Date: Feb 2001
Location: England
Bikes:
Posts: 12,923
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Sram has a wider range, with wider jumps between the gears. By reputation, the Sram is more reliable, but Im not sure there is any data to back that up. I know serious riders who use the Shimano system.
MichaelW is offline   Reply With Quote
Old 03-17-03, 10:06 PM   #5
Dan O'Connor
Newbie
Thread Starter
 
Join Date: Mar 2003
Bikes:
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thank you MicaelW. I was on the Sram web site today and am starting to lean that way. One thing I am finding attractive is that Sram offers a freewheel version, as well as both roller and coaster type brakes. I've seen some bikes with the Shimano hub and I'm beginning to believe that it might be best to eschew the hub stoppers altogether, in favor of a simpler setup with cantilever or V brakes - especially when it comes time to fix the inevitable flat on my way to work. Iím even considering the 5 speed over the seven. According to the legendary Sheldon Brownís web page, it matches the gear spread of the Shimano 7 and is lighter than either the Shimano or the Sram 7. Thatís if you can call 2.7 lbs light.
Dan O'Connor is offline   Reply With Quote
Old 03-18-03, 08:42 PM   #6
John E
feros ferio
 
John E's Avatar
 
Join Date: Jul 2000
Location: www.ci.encinitas.ca.us
Bikes: 1959 Capo; 1980 Peugeot PKN-10; 1981 Bianchi; 1988 Schwinn KOM-10;
Posts: 17,053
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 65 Post(s)
How wide a gear range do you require? My (limited) experience with epicyclic hubs is that a 25 percent gear ratio step is far too wide for my tastes. The only one I really liked was my 12-speed hybrid drive train, a Sturmey-Archer 3-speed with a 14-16-18-20 Cyclo cogset conversion kit. A half-step pair of chainrings, say, 42-40, would have made it a perfect 24-speed.

Also, note that the mechanical efficiency, repairability, and long-term reliability of even the best epicyclics cannot match those of a good derailleur-based system.
__________________
"Early to bed, early to rise. Work like hell, and advertise." -- George Stahlman
Capo [dschaw'-poe]: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger, S/N 42624
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1981 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
John E is offline   Reply With Quote
Old 03-24-03, 07:22 PM   #7
Brennan
Senior Member
 
Brennan's Avatar
 
Join Date: Mar 2003
Location: Oakland, CA
Bikes: Surly CC, Trek Earl
Posts: 642
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sheldon Brown has some info on internal gear hubs here:

http://www.sheldonbrown.com/internal-gears.html
Brennan 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 03:08 AM.