I'm confused about sizing.

[cabbieman]

I have a 52cm road bike. I measured it today from the middle of the crank to the top of the seat tube and it measures 49cm. There's obviously a 3cm discrepancy. Is my bike incorrect or am I measuring in the wrong place.

 

[broady]

Measure the top tube.
Some are measured by the virtual top tube to complicate things further

 

[cabbieman]

I also measured my friends 54cm bianchi and that came up as 52cm. I'll go and measure the top tube now

 

[Yellow Saddle]

Is it a sloping top tube or horizontal?

 

[cabbieman]

If I'm measuring correctly, the inside of the stem to the inside of the seat tube, that's 47cm

 

[cabbieman]

Horizontal. Just looked online and the picture shows more sloping.

 

[cabbieman]

http://www.chainreactioncycles.com/mobile/fuji-sportif-1-1-d-road-bike-2015/rp-prod149504

 

[vickster]

https://static.evanscycles.com/prod...ng-table/Fuji_2016_Sportif_Geometry_Chart.pdf

52cm seems to refer to the effective Seat tube

 

[cabbieman]

Thankyou vickster. It looks like they quote 48.5 which is about the same as my measurement. Their effective length is 52 but I don't know where they're taking that from. I was concerned I'd got a smaller bike than I thought I'd ordered.

 

[vickster]

It's not very big with a 53cm TT

 

[cabbieman]

It's not very big with a 53cm TT

I'm not sure what you mean. Do you think it's a compact set up because that's how it feels. I don't really have much experience

 

[vickster]

I'm not sure what you mean. Do you think it's a compact set up because that's how it feels. I don't really have much experience

How tall are you, just remarking that it's quite a small frame, which doesn't matter one jot if it's comfortable

 

[cabbieman]

I'm 5"8. I dont have any issues with it but was wondering if i could have in the future.

 

[vickster]

I'm 5"8. I dont have any issues with it but was wondering if i could have in the future.

Sounds the right size, why would you have issues in the future, are you still growing?

 

[Cycleops]

It sounds like they might measure the 'virtual' seat tube meaning where the top tube would finish if horizontal. This would account for a discrepancy of this size.
If its comfortable for you then I wouldn't worry.