165 or 170mm cranks for a 59cm road frame conversion?
#1
Senior Member
Thread Starter
Join Date: Sep 2008
Posts: 342
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
165 or 170mm cranks for a 59cm road frame conversion?
I'm building up a 1980 Colnago 59cm road frame to use SS/FG for now. I'm used to using 170mm on my current track frame, but am wondering if I might have pedal strike issues with that length on the Colnago. Any one out there have experience with a similar frame and care to comment?
#2
Get on your bikes & ride!
Join Date: May 2006
Location: Lextown
Posts: 1,069
Bikes: See signature (it varys day to day)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
I think you will be fine with 170s. I am running 167.5s with no strike and my buddy runs 170s on his Merckx conversion. If you are really concerned measure the distance form the bb to the ground on both your Rush and the Colnago. Also do you use clipless pedals? I think you gain a little clearance by using clipless instead of old school pedals with clips and straps.
__________________
Litespeed Classic
Soma Double Cross DC
Litespeed Classic
Soma Double Cross DC
#3
Comanche Racing
Join Date: Feb 2009
Location: Deep in the heart of Texas
Posts: 2,820
Bikes: Presto NJS build, Specialized Allez Pro w/ full Dura Ace and Ksyrium SLs, 1990something Specialized Sirrus
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
yeah i ran 170s on my bike for a little while w/ no problems on my Bianchi Strada conversion, but if it gives you extra peace of mind, go w/ 165. Probably best to play it safe on this one...
#5
MFA
Join Date: Apr 2006
Location: Denver
Posts: 1,186
Bikes: 1973 Italvega Nouvo Record; 1965 Hercules; 1982-83 Schwinn Mystery MTB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I've run 170's on my conversion for many years, without any pedal strike. Don't believe the hype.
#6
Senior Member
Join Date: May 2008
Location: Davis/Lafayette, CA
Posts: 2,014
Bikes: too many
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
i run 170's on my 57cm trek frame and get occasional strike. not really a big deal, you get used to it
#7
Senior Member
Thread Starter
Join Date: Sep 2008
Posts: 342
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Cool, thanks for the replies. I think I am going to go with 170's then, and maybe finally make the switch to clipless pedals from old school track pedals/toe clips if I have issues. I'm used to 170's already and would rather keep my bikes consistent if possible.