Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the Newton-Rider International Giveaway for a Foldable Bicycle Helmet


How do you measure this bike for frame size?
#1
How do you measure this bike for frame size?
It is a mans bike, aluminum frame, with 700c Wheels?
Is it still from the top of the seat tube down to the center of the crank?
[Image: IMG_00002357_zpslzisjqku.jpg~original]
"Where ever we go, there we are"
  Reply
#2
(04-15-2015, 08:58 PM)elmore leonard Wrote:  How do you measure this bike for frame size?
It is a mans bike, aluminum frame, with 700c Wheels?

There is no iron clad rule for size measurement of a frame. There are however some commonality's that exist from maker to maker. Some use cm, some use in. , an others simply xsmall, small, med, large.etc etc.. most all are taken from the center of the Bottom bracket and straight up the seatube to a point designated by each manufacturer. This point is where things change a bit. Some are measured to the center of the top tube, some the top of the top tube, some the top of the seat tube frame styles can influence this point of measure, such as a girls frame or a frame with a sloping top tube or a frame in which the rear stays are above the top tube. In any event you would be close to with a gents frame to measure from the top of the top tube to the top of the seat tube split the difference and be close enough for all practical purpose. For the step thru o lay frame go to the top of the seat tube. Road bikes mostly go by cm. and all others by in.. But again no iron clad rule to that either. If you can find documents from the maker, it will show you how they have measured the bikes they make.

That would suffice Elmore, I had responded before seeing the picture appear
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
  Reply
#3
(04-15-2015, 09:19 PM)painkiller Wrote:  
(04-15-2015, 08:58 PM)elmore leonard Wrote:  How do you measure this bike for frame size?
It is a mans bike, aluminum frame, with 700c Wheels?

There is no iron clad rule for size measurement of a frame. There are however some commonality's that exist from maker to maker. Some use cm, some use in. , an others simply xsmall, small, med, large.etc etc.. most all are taken from the center of the Bottom bracket and straight up the seatube to a point designated by each manufacturer. This point is where things change a bit. Some are measured to the center of the top tube, some the top of the top tube, some the top of the seat tube frame styles can influence this point of measure, such as a girls frame or a frame with a sloping top tube or a frame in which the rear stays are above the top tube. In any event you would be close to with a gents frame to measure from the top of the top tube to the top of the seat tube split the difference and be close enough for all practical purpose. For the step thru o lay frame go to the top of the seat tube. Road bikes mostly go by cm. and all others by in.. But again no iron clad rule to that either. If you can find documents from the maker, it will show you how they have measured the bikes they make.


That would suffice Elmore, I had responded before seeing the picture appear

(04-15-2015, 09:19 PM)painkiller Wrote:  
(04-15-2015, 08:58 PM)elmore leonard Wrote:  How do you measure this bike for frame size?
It is a mans bike, aluminum frame, with 700c Wheels?

There is no iron clad rule for size measurement of a frame. There are however some commonality's that exist from maker to maker. Some use cm, some use in. , an others simply xsmall, small, med, large.etc etc.. most all are taken from the center of the Bottom bracket and straight up the seatube to a point designated by each manufacturer. This point is where things change a bit. Some are measured to the center of the top tube, some the top of the top tube, some the top of the seat tube frame styles can influence this point of measure, such as a girls frame or a frame with a sloping top tube or a frame in which the rear stays are above the top tube. In any event you would be close to with a gents frame to measure from the top of the top tube to the top of the seat tube split the difference and be close enough for all practical purpose. For the step thru o lay frame go to the top of the seat tube. Road bikes mostly go by cm. and all others by in.. But again no iron clad rule to that either. If you can find documents from the maker, it will show you how they have measured the bikes they make.



That would suffice Elmore, I had responded before seeing the picture appear

(04-15-2015, 09:19 PM)painkiller Wrote:  
(04-15-2015, 08:58 PM)elmore leonard Wrote:  How do you measure this bike for frame size?
It is a mans bike, aluminum frame, with 700c Wheels?

There is no iron clad rule for size measurement of a frame. There are however some commonality's that exist from maker to maker. Some use cm, some use in. , an others simply xsmall, small, med, large.etc etc.. most all are taken from the center of the Bottom bracket and straight up the seatube to a point designated by each manufacturer. This point is where things change a bit. Some are measured to the center of the top tube, some the top of the top tube, some the top of the seat tube frame styles can influence this point of measure, such as a girls frame or a frame with a sloping top tube or a frame in which the rear stays are above the top tube. In any event you would be close to with a gents frame to measure from the top of the top tube to the top of the seat tube split the difference and be close enough for all practical purpose. For the step thru o lay frame go to the top of the seat tube. Road bikes mostly go by cm. and all others by in.. But again no iron clad rule to that either. If you can find documents from the maker, it will show you how they have measured the bikes they make.


That would suffice Elmore, I had responded before seeing the picture appear

Thanks for the reply PK. I post first now and add the pictures with the edit feature so I don't lose the text. I post from a BlackBerry Playbook tablet which is a bit finicky at times when two windows are open at the same time........
 I often wonder why the bike frame size is not stamped on the top of the cross bar for buyers and sellers to see. It would be easy to do. This Raleigh bike measures 16" from the bottom bracket to the top of the seat tube.
"Where ever we go, there we are"
  Reply
#4
Boy do not know why we have three empty repeat messages, perhaps the blackberry is not as good for posting as a computer, operator error.

Anyway there ere a lot of creative frame designs. However the standard measurement used to be top of top tube at seat tube to the center of the crank, or top of seat tube to center of crank, which would apply here. That worked well for triangular frames.
Never Give Up!!!
  Reply


Forum Jump:

[-]
10 Latest Posts
Road bike brakes upgrades
Yesterday 06:57 PM
Newton-Rider, a helmet like no other
01-15-2021 05:01 PM
Colnago R41 Handlebar
01-14-2021 10:24 PM
How much do you bike per year?
01-14-2021 04:50 PM
BMX Shoes
01-14-2021 04:42 PM
Colnago C64 setup advice
01-14-2021 04:26 PM
Do you wave to other cyclists?
01-14-2021 01:12 PM
1983 Trek 720
01-13-2021 10:30 AM
Riding all day on the winter solstice
01-13-2021 07:43 AM
NewBikeShopper (intro & opinion request)
01-12-2021 09:11 PM

[-]
Top 5 Posters This Month
no avatar 1. Criminal
20 posts
no avatar 2. Zviedrs
6 posts
no avatar 3. RollOn
5 posts
no avatar 4. Yevhen
5 posts
no avatar 5. Nikko
4 posts