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 07-28-05, 08:05 PM   #1
ckleps
Senior Member
Thread Starter
 
Join Date: Jan 2005
Location: Chicago
Bikes: 2002 Bianchi Veloce 2005 Gary Fisher Marlin
Posts: 516
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Help the idiot with wheel/crankset questions.

"The idiot" is of course refering to me. I needed to get a commuter bike for grad school and figured that if I was getting a used bike and already have two geared bikes I'd convert it to a fixed gear. Unfortunatly I didn't do as much research as I should have. All I looked for was a bike with somewhat horizontal dropouts. I'm now looking at the bike and it has 27inch rims. Do I need to buy a 27inch wheelset or could 700cc wheels fit? The other thing I failed to look for was a bike with chainrings that are detachable from the crankset, so I guess I need a whole new crankset. First place I look is harris cyclery and they have cranksets, but do I need to know anything about which one to buy? Will they all fit on my bike or is there something I should pay attention to in terms of some spec? Finally I just finished reading sheldon browns article on conversions and was just wondering if I'm understanding it correctly. Including the wheelset and crankset I will need a sprocket, a lockring, and spacers. Is this it?
Thanks in advance for any assistance. I know I asked alot, I'm just hoping someone is really bored at work
Peace
ckleps is offline   Reply With Quote
Old 07-28-05, 08:12 PM   #2
ink1373
nothing: lasts forever
 
ink1373's Avatar
 
Join Date: Aug 2004
Location: minneapolis
Bikes:
Posts: 1,502
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
700c wheels will fit just fine. you may need to get long-reach brake calipers, though.

lots of used cranksets can be found on ebay. anything with 165mm length and a semi-standard bcd is good. if you're looking to buy a new set, sugino RDs are a pretty nice standard. you won't dislike them.
ink1373 is offline   Reply With Quote
Old 07-28-05, 08:15 PM   #3
dolface
Iguana Subsystem
 
dolface's Avatar
 
Join Date: Nov 2004
Location: san francisco
Bikes:
Posts: 4,016
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
700's will fit fine, and you don't necessarily have to get a new set of cranks; if you can get a decent chainline with the cranks that came on the bike and don't mind rockin' the double rings you're good to go.

for more tips check this site if you haven't already http://sheldonbrown.com/fixed-conversion.html

have fun!
dolface is offline   Reply With Quote
Old 07-28-05, 08:19 PM   #4
ckleps
Senior Member
Thread Starter
 
Join Date: Jan 2005
Location: Chicago
Bikes: 2002 Bianchi Veloce 2005 Gary Fisher Marlin
Posts: 516
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ink1373
700c wheels will fit just fine. you may need to get long-reach brake calipers, though.

lots of used cranksets can be found on ebay. anything with 165mm length and a semi-standard bcd is good. if you're looking to buy a new set, sugino RDs are a pretty nice standard. you won't dislike them.
so the issue with wheel size isn't the frame but the brakes? So with bigger wheels instead on touching the rim they would end up touching the tire instead? I looked at those cranks at harris and thought I'd go with them but I don't know about compatibilty with my BB. People are always talking about english and italian and I don't know what that means. How do I check what kind of BB I have?
ckleps is offline   Reply With Quote
Old 07-28-05, 08:21 PM   #5
ckleps
Senior Member
Thread Starter
 
Join Date: Jan 2005
Location: Chicago
Bikes: 2002 Bianchi Veloce 2005 Gary Fisher Marlin
Posts: 516
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by dolface
700's will fit fine, and you don't necessarily have to get a new set of cranks; if you can get a decent chainline with the cranks that came on the bike and don't mind rockin' the double rings you're good to go.

for more tips check this site if you haven't already http://sheldonbrown.com/fixed-conversion.html

have fun!
The current rings are 52 and 40. Could I use either of those, it seems like I always see people with 48 tooth rings?
ckleps is offline   Reply With Quote
Old 07-28-05, 08:21 PM   #6
ink1373
nothing: lasts forever
 
ink1373's Avatar
 
Join Date: Aug 2004
Location: minneapolis
Bikes:
Posts: 1,502
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
its pretty doubtful that you have an italian BB. that refers to the type of threading on the BB shell.
ink1373 is offline   Reply With Quote
Old 07-28-05, 08:24 PM   #7
dolface
Iguana Subsystem
 
dolface's Avatar
 
Join Date: Nov 2004
Location: san francisco
Bikes:
Posts: 4,016
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
what kind of frame is it?
dolface is offline   Reply With Quote
Old 07-28-05, 08:27 PM   #8
ckleps
Senior Member
Thread Starter
 
Join Date: Jan 2005
Location: Chicago
Bikes: 2002 Bianchi Veloce 2005 Gary Fisher Marlin
Posts: 516
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by dolface
what kind of frame is it?
Its a schwinn world I believe. Has a sticker that says made in taiwan if that helps.
ckleps is offline   Reply With Quote
Old 07-28-05, 08:30 PM   #9
dolface
Iguana Subsystem
 
dolface's Avatar
 
Join Date: Nov 2004
Location: san francisco
Bikes:
Posts: 4,016
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
hmm, it might have that weird schwinn bb shell, in which case you'll need a bb-shell adapter if you're going to replace the cranks. you'll need a new bb too.

any chance of pics?
dolface is offline   Reply With Quote
Old 07-28-05, 08:32 PM   #10
frameteam2003
Senior Member
 
Join Date: Feb 2005
Location: Pleasanton Tx
Bikes: old,older.and very old
Posts: 1,119
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
More important--what type of cranks are on it now---Cottered,tapered,splined?Might need a new spindle too.Maybe just drill out the brads holding the second ring.---sam
frameteam2003 is offline   Reply With Quote
Old 07-28-05, 08:58 PM   #11
ckleps
Senior Member
Thread Starter
 
Join Date: Jan 2005
Location: Chicago
Bikes: 2002 Bianchi Veloce 2005 Gary Fisher Marlin
Posts: 516
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by dolface
hmm, it might have that weird schwinn bb shell, in which case you'll need a bb-shell adapter if you're going to replace the cranks. you'll need a new bb too.

any chance of pics?
Just took these in a cramped dark garage. If they don't show what you need to see let me know and I'll try to get a better shot.
ckleps is offline   Reply With Quote
Old 07-28-05, 09:46 PM   #12
dolface
Iguana Subsystem
 
dolface's Avatar
 
Join Date: Nov 2004
Location: san francisco
Bikes:
Posts: 4,016
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
ok, cool. it looks like it's a new-enough bike that it's got a normal-sized bb shell (almost certainly english) and 3-piece cranks.

so you're good; if you can get a decent chainline w/ what's on there, go for it. if not, at a best guess, a $25 shimano cartridge bb and an inexpensive set of cranks and you'll be all set.
dolface is offline   Reply With Quote
Old 07-28-05, 09:55 PM   #13
ckleps
Senior Member
Thread Starter
 
Join Date: Jan 2005
Location: Chicago
Bikes: 2002 Bianchi Veloce 2005 Gary Fisher Marlin
Posts: 516
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by dolface
ok, cool. it looks like it's a new-enough bike that it's got a normal-sized bb shell (almost certainly english) and 3-piece cranks.

so you're good; if you can get a decent chainline w/ what's on there, go for it. if not, at a best guess, a $25 shimano cartridge bb and an inexpensive set of cranks and you'll be all set.

great. Thanks for the assistance. I'm sure its been said before but nice avitar. I walked from the field museum to landmark cinema theatre on clark in a brand new pair of shoes to see that movie, long walk. Ended up with a blister with a 2 inch diameter on my foot, but it was well worth it.
ckleps is offline   Reply With Quote
Old 07-28-05, 09:58 PM   #14
dolface
Iguana Subsystem
 
dolface's Avatar
 
Join Date: Nov 2004
Location: san francisco
Bikes:
Posts: 4,016
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
you're welcome, thanks, and we'll wanna see pics of your new ride when it's done
dolface is offline   Reply With Quote
Old 07-29-05, 08:24 AM   #15
stevo
Senior Member
 
Join Date: Jun 2003
Bikes:
Posts: 997
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
the pics indicate you already have wheels. why do you ~need~ to by more?

regardless, yes, the issue is simply whether the current brakes have enough reach to contact the 700c rim. Odds are, they do. Then again, they may not.
stevo is offline   Reply With Quote
Old 07-29-05, 09:37 AM   #16
ckleps
Senior Member
Thread Starter
 
Join Date: Jan 2005
Location: Chicago
Bikes: 2002 Bianchi Veloce 2005 Gary Fisher Marlin
Posts: 516
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by stevo
the pics indicate you already have wheels. why do you ~need~ to by more?

regardless, yes, the issue is simply whether the current brakes have enough reach to contact the 700c rim. Odds are, they do. Then again, they may not.
The wheels are really old, the spokes and hubs have rust on them so I figured it would make more sense to get new prebuilt wheels instead of rebuilding the rear wheel, because I really don't trust it.
ckleps 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 07:15 AM.