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 11-21-09, 10:31 PM   #1
hmarks
Senior Member
Thread Starter
 
Join Date: Aug 2009
Bikes:
Posts: 87
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Cannot decide between 58cm or 61cm!

So, I've been reading a lot and researching this on many different websites, but all it does is confuse me. I'm hoping an expert on here can help me out.

I'm 6'3", with long legs, a short torso, and long arms.

My inseam (not pant length) is 36".

These are the specs for the Motobecane Track from BD that I'm looking at:

For the 58cm the TT length is 57cm, standover is 32.5 inches
For the 61cm the TT length is 59cm, standover is 33.6 inches

I'm not going to be racing, just riding in the city, and I like riding with more of an upright position.

I'm leaning towards the 61cm, but I don't want it to be too big! Please help!
hmarks is offline   Reply With Quote
Old 11-21-09, 10:37 PM   #2
klaw091
Senior Member
 
Join Date: Oct 2009
Location: Queens, NY or Champaign, IL
Bikes: Schwinn World Sport
Posts: 261
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I do not think you have anything to worry about.

I am 5" 9", and both my fixed gears are 60" c-c.

but if you really want to be safe, you should go to a lbs and see what you're comfortable.

I personally enjoy a larger frame, my legs are stretched but not overly.

goodluck
klaw091 is offline   Reply With Quote
Old 11-21-09, 10:45 PM   #3
LordsOnly
Senior Member
 
Join Date: Dec 2008
Location: Toronto, ONT
Bikes:
Posts: 56
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by klaw091 View Post
I do not think you have anything to worry about.

I am 5" 9", and both my fixed gears are 60" c-c.

but if you really want to be safe, you should go to a lbs and see what you're comfortable.

I personally enjoy a larger frame, my legs are stretched but not overly.

goodluck
your comfortable on a 60? I'm also 5-9 and can't get comfortable on anything larger then a 55-55.5.
LordsOnly is offline   Reply With Quote
Old 11-21-09, 10:54 PM   #4
kizzle
Junior Member
 
Join Date: Oct 2009
Bikes:
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
im 6'1 and ride the 58cm. go with the 61cm
kizzle is offline   Reply With Quote
Old 11-21-09, 11:30 PM   #5
iBaloney
Senior Member
 
iBaloney's Avatar
 
Join Date: Oct 2009
Location: East Los Angeles
Bikes: (soon to be) 2010 Motobecane Track
Posts: 121
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
+1 on the 61cm. you'll still have good clearance over the TT.
iBaloney is offline   Reply With Quote
Old 11-21-09, 11:33 PM   #6
LoRoK
a.k.a. QUADZILLA
 
LoRoK's Avatar
 
Join Date: May 2007
Location: Portland!
Bikes: Super Pista, Basso, Big Dummy
Posts: 1,504
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Bikes are made for riding, so you'll want to have it sized for riding rather than for standing over it. Go to an LBS and get fitted.
LoRoK is offline   Reply With Quote
Old 11-21-09, 11:35 PM   #7
bionnaki
Senior Member
 
Join Date: Aug 2006
Bikes:
Posts: 886
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
for the thousandth time, dont worry so much about SO height. worry mostly about TT length.


If you're unwilling or unable to get fitted, at least run a fit calc like the competitive fit calculator. use the recommended TT length, and then decide from there.
bionnaki is offline   Reply With Quote
Old 11-22-09, 01:28 AM   #8
stryper
I just wanna ride
 
stryper's Avatar
 
Join Date: Oct 2008
Location: Chico Califo
Bikes: 2013 BMC Impec
Posts: 1,153
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
just like most every here says, get the 61cm. It will fit you right. The 58cm will be too small.
stryper is offline   Reply With Quote
Old 11-22-09, 01:36 AM   #9
schnee
Senior Member
 
Join Date: Sep 2005
Bikes:
Posts: 3,367
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm your height, and fairly close to your build. Get the 61.
schnee is offline   Reply With Quote
Old 11-22-09, 02:23 AM   #10
hairnet
Fresh Garbage
 
hairnet's Avatar
 
Join Date: Apr 2009
Location: Los Angeles
Bikes:
Posts: 12,485
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 48 Post(s)
Quote:
Originally Posted by stryper View Post
The 58cm will be too small.
Depends how flexible he is.
hairnet is offline   Reply With Quote
Old 11-22-09, 05:02 AM   #11
alexgate
Senior Member
 
alexgate's Avatar
 
Join Date: Jul 2008
Bikes:
Posts: 435
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I am 6 2 and my 58 feels slightly big on me. Moral of the storry, every one is built differently and you should get fitted.
alexgate is offline   Reply With Quote
Old 11-22-09, 05:49 AM   #12
zzyzx_xyzzy
headtube.
 
zzyzx_xyzzy's Avatar
 
Join Date: Sep 2008
Bikes:
Posts: 804
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I am also 6'3, with a 37" cycling inseam, long limbs shorter torso.

On the assumption that you would fit similarly to me, my "best guess" is 58cm will for sure be too small for you. Hell, I would seriously consider at least trying on a 64cm.

For riding in the city, if I could spec my own frame, i'd give it a 66cm seat tube and 62cm top tube. This I would be able to standover and have the bars in a high-forward position -- which I've found gives the same back angle on the hoods as a shorter/lower position, but the forward position is less cramped in the drops. So I can stay in the drops for longer, ride faster and more comfortable overall.

Everyone says that TT length is what matters. This is only partly true. The truth is it's the combination of TT and saddle-to-bar drop, which work against each other. The less saddle-bar drop you have, the further forward you can stretch. Arms forward opens up the chest for easier breathing and tilts your shoulders so you have less neck strain looking forward; a lot of people prefer that.

This makes it hard for long legged folks testing bikes because every time they get on a test bike they have to set the saddle high, so that have too much saddle-bar drop. So the bike that actually has the right horizontal reach feels bad because the drop is too much; the bike a couple sizes smaller feels better on the hoods, so you get that one, and then you never use the drops.

I have a bike with a 60cm ST, 59cm TT. It came with a 110mm stem that actually felt like too much of a reach to the hoods -- (actually, it was too much drop to the hoods) so I swapped it for a 100mm stem. Rode that for a long time until I was messing around with a larger bike one day. Light bulb went off, I ordered the longest stem I could find with a 25 degree rise -- so the bars are higher AND further forward. Feels much better and I use the drops more.
zzyzx_xyzzy is offline   Reply With Quote
Old 11-22-09, 07:27 AM   #13
Inertianinja
Senior Member
 
Join Date: May 2009
Location: NYC
Bikes: Felt AR1, Cervelo S2
Posts: 2,760
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I was just in a similar sitation, and sadly you really have to try the bikes to see.

a smaller bike will have you raising the seatpost higher, so you'll be leaning further down to reach the handlebars, and your weight will be further forward. I don't have experience with FG riding, but when I tried it I didn't feel in control.

I went up a size and the ride was more relaxed, I liked it.

I'm 6ft, 34 inseam
I normally ride a 21.5" hybrid
some shops recommended a 55cm for me **over the phone**
all recommended 57-58 once I was on the bike.
Inertianinja is offline   Reply With Quote
Old 11-22-09, 09:15 AM   #14
xB_Nutt
Get on your bikes & ride!
 
xB_Nutt's Avatar
 
Join Date: May 2006
Location: Lextown
Bikes: See signature (it varys day to day)
Posts: 1,070
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Another vote for the 61
__________________
Litespeed Classic
Soma Double Cross DC
xB_Nutt is offline   Reply With Quote
Old 11-22-09, 01:33 PM   #15
filtersweep
Senior Member
 
filtersweep's Avatar
 
Join Date: Mar 2004
Bikes:
Posts: 2,615
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
There is more to life than just the TT measurement--- since the overall geometry will affect actual reach. For example, I purchased a 57cm track frame that has a TT measurement of 56.1 cm ctc. While this is true, the 57 seatpost was measured to the top of the seatpost mast--- which extends a few cm above the TT (and certainly well above the center of the TT). This means that I end up with even more of a "set back" than a more traditional "square" geometry." For me, a 56 TT is normally a bit on the short side--- and I was debating moving up a size to a 59 (thinking it would be more of a true 57, given that it isn't measured ctc). To make a long story short, this is currently my largest frame-- even though it shows the shortest TT measurement on a geometry chart. Does that make any sense (frame is not measured like a triangle). I suggest posting the brand or geometry chart to give you richer information. A 61 cm frame could be huge.... or it could be just right (many low end frame makers don't seem to make any extreme frames).geom.jpg

Last edited by filtersweep; 11-22-09 at 01:40 PM.
filtersweep is offline   Reply With Quote
Old 11-22-09, 03:31 PM   #16
andmalc
Senior Member
 
Join Date: May 2007
Location: Belleville, Ontario, Canada
Bikes: Wabi Classic fixed, Raleigh Sojourn, Xootr Swift folder
Posts: 172
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm 5' 10" with a 34" cycling inseam (so long legged) and bought the 58 frameset of the MB Phantom Cross Uno which I believe is built with the same frame as the Messenger. This was too small for me so I ordered the 61 which was absolutely not too big but I'm still not comfortable. Why? Because I'm sure the geometry chart is wrong and the seat tube angle is not 72.5 degrees but much steeper, more like 74, which means more of the top tube is forward of the bottom bracket and so better for a rider with average or relatively shorter legs vs. torso. Even with an extra long set back seatpost I could never get my seat back far enough to give my legs room to move.

I can say the Uno/Messenger chart is wrong because I lined up the 61 Uno frame with my 59 Steamroller frame with a 73 degree SA (which is actually about the same vertical size as the Uno though longer in the TT) and could clearly see that the seat tube angle of the Uno is steeper than the Steamroller.

Last edited by andmalc; 11-22-09 at 03:57 PM.
andmalc is offline   Reply With Quote
Old 11-23-09, 12:37 AM   #17
hmarks
Senior Member
Thread Starter
 
Join Date: Aug 2009
Bikes:
Posts: 87
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
thanks for all the replies! looks like i'll be going with the 61!
hmarks 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 03:10 AM.