Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-02-10, 04:06 PM   #1
jakemoffatt
Senior Member
Thread Starter
 
Join Date: Apr 2005
Bikes:
Posts: 344
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
How far can i go from my bike size (58cm) and still be comfortable?

Hi,

I am in the market for a single/fixie and I ride a 58cm road bike today. I'm 6'0 tall with a 32" inseam. Would I be happy on a 56cm or would I hate myself?

Thanks,

Jake
jakemoffatt is offline   Reply With Quote
Old 05-02-10, 06:25 PM   #2
NormanF
Senior Member
 
Join Date: Mar 2007
Bikes:
Posts: 5,370
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
You'll have to test ride bikes to see if they're a good fit. I'm 5'7 and I ride a 52 cm CX SS bike and I ride a 55 cm Lemond road bike. So I would suggest going one size smaller if you want to get a CX bike which sounds perfect - I recommend the Bianchi San Jose.
NormanF is offline   Reply With Quote
Old 05-02-10, 06:41 PM   #3
tsl
Plays in traffic
 
tsl's Avatar
 
Join Date: May 2006
Location: Rochester, NY
Bikes: 1996 Litespeed Classic, 2006 Trek Portland, 2013 Ribble Winter/Audax
Posts: 6,961
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 34 Post(s)
Bear in mind that most bikes out there are "sized" by seat tube for leg length. In my experience, top tube length is the more meaningful figure.

This is because people are proportioned differently, and it's easy to adjust seat height. But to change the top tube length requires a welder.

I am two inches shorter than you, yet my inseam is two inches longer. I'm proportioned differently--long legs, short torso to your long torso and short legs.

All my bikes have a top tube between 56 cm and 56.5 cm. Their "sizes"--again based on seat tube--are 55, 56, and 58.

So you can see that comparing "sizes" is fairly meaningless to overall fit.

My guess is that you'll feel very cramped on a 56. But only a test ride will tell for sure.
tsl is offline   Reply With Quote
Old 05-02-10, 09:03 PM   #4
Loose Chain
Senior Member
 
Loose Chain's Avatar
 
Join Date: Sep 2009
Location: USA
Bikes: 84 Pinarello Trevisio, 86 Guerciotti SLX, 96 Specialized Stumpjumper, 2010 Surly Cross Check, 88 Centurion Prestige, 73 Raleigh Sports
Posts: 1,620
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 79 Post(s)
I doubt he is six feet with only a 32 inch inseam, he is using pants length and not PBH.

Go by your top tube length more than "frame" size because different manufactuers call frame sizes differently and it is easy to fixate on a number. My 54cm Surly fits similar to my 56cm Pinarello that fits similar to my 18 inch Stumpie that fits similar to my 57cm Guercitto. What they all have in common is a top tube length of 56cm give or take a little. I am 5-10 and have a cycling inseam, PBH of 85.9cm.

Using the LeMond Formula of .883 X PBH for saddle height the other thing they all have in common is I have the saddle height adjusted similar on all of them with small differences to account for differing shoes etc.
Loose Chain is offline   Reply With Quote
Old 05-02-10, 11:04 PM   #5
Drew Eckhardt
Senior Member
 
Drew Eckhardt's Avatar
 
Join Date: Apr 2010
Location: Sunnyvale, CA USA
Bikes:
Posts: 5,186
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 86 Post(s)
Quote:
Originally Posted by jakemoffatt View Post
Hi,

I am in the market for a single/fixie and I ride a 58cm road bike today. I'm 6'0 tall with a 32" inseam. Would I be happy on a 56cm or would I hate myself?

Thanks,

Jake
It depends how the frames are measured (56 center to center can be 57.5 center to top), how long the (potentially "virtual" for compact frames) top tube is, and whether you can swap out the stem for appropriate height + reach.
Drew Eckhardt is offline   Reply With Quote
Old 05-04-10, 08:08 PM   #6
BarracksSi
Bike ≠ Car ≠ Ped.
 
BarracksSi's Avatar
 
Join Date: Jul 2007
Location: Washington, DC
Bikes: Some bikes. Hell, they're all the same, ain't they?
Posts: 13,858
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm close to your height, and I feel best on a 58 road bike. So far, anyway. I can ride a 60 with a shorter stem, and a 56 with a longer one. Getting more specific, I prefer Campy and Sram on shorter bikes because of how my hands fit on their shifter hoods, and Shimano's fine on longer bikes.

And, as usual, the seat tube measurement has become one of the most worthless measurements on any bike ever since the first frame with a sloping top tube was built (not counting women's and mixte frames).
BarracksSi is offline   Reply With Quote
Old 05-05-10, 11:51 AM   #7
corkscrew
Senior Member
 
Join Date: Mar 2009
Location: Boise, ID.
Bikes:
Posts: 1,252
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm 5'11, and I feel cramped on a 56.

It really is a personal thing. My brother is my height and felt more comfortable on a 54cm cross bike than the larger sizes.
corkscrew is offline   Reply With Quote
Old 05-07-10, 11:32 AM   #8
PaulRivers
Senior Member
 
Join Date: Jul 2008
Location: Minneapolis, MN
Bikes:
Posts: 5,597
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 77 Post(s)
It's hard to say - I'm also 6'0 tall with a 32" inseam myself, and I had a far, far more comfortable ride when I went from my old 58" bike to a 56" frame - much, much, much more my size.

As you can see from the other responses, it varies greatly from person to person though. :-)
PaulRivers 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 03:51 AM.