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 08-03-07, 06:46 AM   #1
feethanddooth
this one's optimistic...
Thread Starter
 
feethanddooth's Avatar
 
Join Date: Apr 2006
Location: central new jersey
Bikes: cannondale r400 2006 kona smoke 2005 scott cr1 team
Posts: 723
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
am having thoughts of changing a 21 speed in a 3 speed

my 54 cm cannondale is used for commuting only. i dont have the need for all the gears and its coming time to replace the crankset, rear cassette, and other parts. the bike was somewhat misused in my early riding years when i had no clue how to care for and maintain a bike.

any thoughts? any ideas? ive never done a revamping like this. in fact i dont even know where to start.
feethanddooth is offline   Reply With Quote
Old 08-03-07, 07:02 AM   #2
DMF 
Elitist Troglodyte
 
DMF's Avatar
 
Join Date: Jun 2006
Location: Dallas
Bikes: 03 Raleigh Professional (steel)
Posts: 6,924
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What's wrong with the parts? Gotten too dirty to clean?
__________________
Stupidity got us into this mess - why can't it get us out?

- Will Rogers
DMF is offline   Reply With Quote
Old 08-03-07, 10:53 AM   #3
acorn_user
Senior Member
 
Join Date: Dec 2005
Location: Charlottesville, Virginia
Bikes: Dawes Kalahari, Puch Prima Super Sport, Graham Weigh 853
Posts: 1,990
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
A three speed hub works best with flat bars and horizontal drop outs. I bet you could use vertical dropouts if you used a chain tensioner though.
Your cheapest option is probably a new crank (Sugino XD) cheap cassette and Sram chain. That should be well under $100.
acorn_user is offline   Reply With Quote
Old 08-03-07, 03:49 PM   #4
cny-bikeman
Mechanic/Tourist
 
Join Date: Apr 2007
Location: Syracuse, NY
Bikes: 2008 Novara Randonee - love it. Would have more bikes if I had time to ride them all. Previous bikes: 1968 Motobecane Mirage, 1972 Moto Grand Jubilee (my fav), Jackson Rake 16, 1983 C'dale ST500.
Posts: 6,440
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
Keep in mind that the gearing on a 3 speed is very w-i-d-e. Middle gear is 1:1, lower 3:4 and upper 4:3. That means jumps of 33% between gears.
cny-bikeman is offline   Reply With Quote
Old 08-03-07, 04:26 PM   #5
feethanddooth
this one's optimistic...
Thread Starter
 
feethanddooth's Avatar
 
Join Date: Apr 2006
Location: central new jersey
Bikes: cannondale r400 2006 kona smoke 2005 scott cr1 team
Posts: 723
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
no big deal im usually taking it very easy or going all out on my commutes. and i just want somthing different
feethanddooth is offline   Reply With Quote
Old 08-03-07, 10:10 PM   #6
Grand Bois
Senior Member
 
Grand Bois's Avatar
 
Join Date: Mar 2005
Location: Pinole, CA, USA
Bikes:
Posts: 16,839
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 141 Post(s)
I always wanted to try combining a three speed hub with a lightweight frame. I'm working on the project now. It's a '59 Carlton Reynolds 531 frame with a Raleigh Competition fork. It's a single speed for now. I need to get the wheels built.

http://good-times.webshots.com/album/559341390NROHtj

This looks like just what you need:

http://cgi.ebay.com/ws/eBayISAPI.dll...ayphotohosting

Last edited by Grand Bois; 08-03-07 at 10:28 PM.
Grand Bois is offline   Reply With Quote
Old 08-04-07, 06:29 AM   #7
Pompiere
Senior Member
 
Join Date: Nov 2005
Location: NW Ohio
Bikes: 1984 Miyata 310, 1989 Club Fuji, 1986 Schwinn Sierra, 2011 Jamis Quest, 1980 Peugeot TH8 Tandem, 1992 Performance Parabola, 1986 Ross Mt. Hood
Posts: 1,796
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
On the Cannondale, the aluminum frame may not like being squeezed down to the normal 110mm spacing that is normal for 3 speed hubs. You would need to make sure that you get a longer axle so you can add spacers. Sturmey-Archer made a long axle, so you should be able to find one.

I built a three speed from a Kabuki frame and a Shimano hub. I laced new alloy rims from Nashbar, but everything else is original. The ratios are spaced out, but I have 44, 59, and 78 gear inches using the 39 toooth chainwheel and a 18 tooth cog.
Pompiere is offline   Reply With Quote
Old 08-04-07, 06:41 AM   #8
feethanddooth
this one's optimistic...
Thread Starter
 
feethanddooth's Avatar
 
Join Date: Apr 2006
Location: central new jersey
Bikes: cannondale r400 2006 kona smoke 2005 scott cr1 team
Posts: 723
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Dirtdrop View Post
I always wanted to try combining a three speed hub with a lightweight frame. I'm working on the project now. It's a '59 Carlton Reynolds 531 frame with a Raleigh Competition fork. It's a single speed for now. I need to get the wheels built.

http://good-times.webshots.com/album/559341390NROHtj

very cool. thanks for the link!
feethanddooth is offline   Reply With Quote
Old 08-04-07, 06:44 AM   #9
feethanddooth
this one's optimistic...
Thread Starter
 
feethanddooth's Avatar
 
Join Date: Apr 2006
Location: central new jersey
Bikes: cannondale r400 2006 kona smoke 2005 scott cr1 team
Posts: 723
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
the cannondale needs a lot of work. wheels are starting to become untrue-able (word?). needs a very good clean and then ill start the re haul.

it isnt like i need to change things, just very interested in taking on a project especially with the cooler weather coming in a 2 months or so. plus i want to have a bike where i can make a mistake on and not be in shambles (like on my scott).
feethanddooth 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 02:45 PM.