Bike measurement question
#1
Monkey in Training
Thread Starter
Join Date: Jan 2009
Location: Massachusetts
Posts: 325
Bikes: IRO Mark V
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Bike measurement question
IRO Fixie Mark V /Masi Speciale/ Planet X SL Pro
53cm/49cm/M(48)
TT 520/ 520/ 526
ST 460/ 490/ 480
HT 100/ 81/ 145
Chain 391/ 465/ 408
BB Drop 50/ 70/ 68
WB 950/ 1035/ 985
STA 75/ 74.5/ 73.5
HTA 72/ 71.5/ 72.5
I own the first one, the IRO fixie. I am looking at the other two. These are the closest I could find as far as sizing as far as top tube length and stuff. Is there really this much difference in sizing (IRO 53cm and Masi 49CM for example have the closest measurements) or am I looking at something wrong?
53cm/49cm/M(48)
TT 520/ 520/ 526
ST 460/ 490/ 480
HT 100/ 81/ 145
Chain 391/ 465/ 408
BB Drop 50/ 70/ 68
WB 950/ 1035/ 985
STA 75/ 74.5/ 73.5
HTA 72/ 71.5/ 72.5
I own the first one, the IRO fixie. I am looking at the other two. These are the closest I could find as far as sizing as far as top tube length and stuff. Is there really this much difference in sizing (IRO 53cm and Masi 49CM for example have the closest measurements) or am I looking at something wrong?
Last edited by mooxster; 02-02-09 at 11:53 AM.
#2
Banned.
Join Date: May 2004
Location: Orange County, California
Posts: 508
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The difference in "size" comes from the fact that manufacturers don't use a standardized method of determining "size". While they pretty much all start at the center of the bottom bracket, some measure to the center of the top tube, some measure to the top of the top tube and some measure to the top of the seat tube. Never use the "size" of a bike to determine what size you need.