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 02-23-05, 07:57 PM   #1
FarHorizon
Senior Curmudgeon
Thread Starter
 
FarHorizon's Avatar
 
Join Date: Jan 2005
Location: Directly above the center of the earth
Bikes: Varies by day
Posts: 3,856
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
6-speed to 7 or 9?

I just scooped up an old Cannondale 400 on e-Bay. Nice frame, seems like... The wheels on it have non-stock Campy hubs with a Shimano "Crane" rear derr., and a 6-speed sprocket. My questions are as follows:

1. Can I (while keeping the same hub) swap out for a 7-speed cogset while still using the same chain and front chainrings?

2. Can I (while keeping the same hub) swap out for a 9-speed cogset by changing the chain and front chainrings?

3. Is the Shimano Crane index-shifter-compatible?

4. Is this frame worth upgrading?

5. Assuming I'm willing to change hubs, shifters, and chainrings for a modern 9 or 10 speed drivetrain, who makes deep-v 700c clincher rims with rear offset drilling (and offset "v") to equalize spoke tension?

I know this is a scattershot of questions, but newbies like me want to know. Thanks **very** much for your help.
FarHorizon is offline   Reply With Quote
Old 02-23-05, 09:57 PM   #2
sydney
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Bikes:
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by FarHorizon
I just scooped up an old Cannondale 400 on e-Bay. Nice frame, seems like... The wheels on it have non-stock Campy hubs with a Shimano "Crane" rear derr., and a 6-speed sprocket. My questions are as follows:

1. Can I (while keeping the same hub) swap out for a 7-speed cogset while still using the same chain and front chainrings?

2. Can I (while keeping the same hub) swap out for a 9-speed cogset by changing the chain and front chainrings?

3. Is the Shimano Crane index-shifter-compatible?

4. Is this frame worth upgrading?

5. Assuming I'm willing to change hubs, shifters, and chainrings for a modern 9 or 10 speed drivetrain, who makes deep-v 700c clincher rims with rear offset drilling (and offset "v") to equalize spoke tension?

I know this is a scattershot of questions, but newbies like me want to know. Thanks **very** much for your help.
1) I'm assuming it's a freewheel,so yes. 2) no. 3) no. 4) It aint worth spending a small fortune on. 5) duno
sydney is offline   Reply With Quote
Old 02-23-05, 10:14 PM   #3
Al1943
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
"9 or 10 speed drivetrain, who makes deep-v 700c clincher rims with rear offset drilling (and offset "v") to equalize spoke tension?"

Velocity make the Arrowhead rear rim, a shallow-v, with an offset that's suppose to help reduce the spoke tension differential. I doubt that anyone makes a rim or hub and rim combination that will equalize the tension differential on an 8,9, or10-speed wheel. I don't know what the rear wheel dropout spacing is on your Cannondale, maybe 126mm. You would need 130mm to upgrade to 9, or 10-speed and you can't spread an aluminum frame safely.

Al
Al1943 is offline   Reply With Quote
Old 02-23-05, 10:26 PM   #4
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: 16,934
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 31 Post(s)
Assuming your current dropout width is 126 to 128mm, exchanging your 6-speed freewheel for a 7-speed and putting your shifters in friction mode is your most reasonable upgrade path. I did this on the Bianchi, which is blessed with friction shifters, with great success, replacing a 13-15-17-19-21-23 freewheel with a 13-15-17-19-21-23-26.
__________________
"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 02-23-05, 10:40 PM   #5
muccapazza
brain damaged bovine
 
muccapazza's Avatar
 
Join Date: Feb 2005
Location: back on the dental floss ranch, wielding zircon encrusted tweezers
Bikes: Schwinn wrecked ol' Probe 1x2, 84 Bianchi Limited,Cannondale F400,Raleigh 20 folder,78 Schwinn LeTour III Fixed Gear,Redline Conquest Pro,71-73 Gitane TdF,Gitane Grand Sport de Luxe,78 Raleigh Super Course,80 Schwinn World Sport
Posts: 625
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Another cool option is something I picked up from Sheldon Brown's informative site. Since you are agreeable to possibility of upgrading hubs, shifters, and chainrings, you could get a 126mm hub, 9 speed cluster (has to be one you can take apart, like a 105 model), chain, and inner chainring. You take the cluster apart, and discard one of the cogs (a large one up near the wheel would be the easiest bet), put the remaining cogs with the 9 speed spacers on the freehub, use the 9-speed chain and 9-speed indexed shifters, and voila! 8-speed bike. I did this upgrade to my cannondale 400, it works a treat, you just have one useless position on your 9-speed shifter that doesn't work. It's explained much better at the sheldonbrown.com website. Anyway, it's a viable option for you to think about. Cheers and good luck with the project, have fun.

edit: this page has lots of good info, it's where I first got the idea to try it. http://sheldonbrown.com/k7.html

Last edited by muccapazza; 02-24-05 at 01:09 AM.
muccapazza 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 02:11 AM.