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 09-21-10, 09:07 AM   #1
chico1st
30mi/day commuter
Thread Starter
 
Join Date: Apr 2008
Location: Toronto, Canada
Bikes:
Posts: 794
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
how do i know if i have the right wheel size?

i have a bike... ill put up pictures soon. It came with 26" wheen (used of course) and 170mm cranks but I scrape my pedals on turns very easily... its not a big deal as its a city bike but how do i know if its the crank length or wheel size that is off.
chico1st is offline   Reply With Quote
Old 09-21-10, 09:14 AM   #2
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 19,737
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 467 Post(s)
measure the radius ... axle to inside of the fork crown or
rear bridge between either of those tubes..

and bb to ground, and pedal at the bottom of stroke to ground.

and report back ..

Last edited by fietsbob; 09-21-10 at 10:39 AM.
fietsbob is online now   Reply With Quote
Old 09-21-10, 10:04 AM   #3
tatfiend 
Gear Hub fan
 
Join Date: Nov 2008
Location: Reno, NV
Bikes: Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
Posts: 2,830
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If it has anything other than disc brakes wheel size has to be close to correct or the brakes would not work unless it has been fitted with very long reach caliper brakes or the frame has been modified by a frame builder to relocate brake bosses.

Another thing that can lead to easy pedal dragging is some old very wide pedals such as the "counterbalanced" pedals of the 1970s or so. Combine those with much narrower than originally fitted tires and you have a recipe for pedal drag. I just bought an old Nishiki with counterbalanced pedals still installed.
__________________
Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro

Visit and join the Yahoo Geared Hub Bikes group for support and links.
http://groups.yahoo.com/group/Geared_hub_bikes/
tatfiend is offline   Reply With Quote
Old 09-21-10, 10:35 AM   #4
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 19,737
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 467 Post(s)
you could coast thru corners , and bring the pedal closest to the inside of the corner up.

It's what most people do .. Shift your weight to the outside pedal .
.. it lowers the C of G a bit.


want a Criterium race bike to pedal around corners ? .. get one.. 12" bb height

whats yours?

Last edited by fietsbob; 09-21-10 at 10:40 AM.
fietsbob is online now   Reply With Quote
Old 09-21-10, 12:36 PM   #5
cyclist2000
Senior Member
 
cyclist2000's Avatar
 
Join Date: Sep 2009
Location: Up
Bikes: Masi (retired), Giant TCR, Eisentraut, Jamis Aurora Elite, Zullo (trainer bike), Cannondale, 84 Stumpjumper, Waterford(N+1), Tern D8 (N+1), looking for a Ti frame
Posts: 3,037
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Or provide the brand, model, year and height of bike.
cyclist2000 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 08:56 AM.