Diameter fitting of Road Bike Seat posts
#1
Senior Member
Thread Starter
Diameter fitting of Road Bike Seat posts
I measured my seat post on road bike to be 26.8mm
and found same model on ebay with same measurements
now I want to get a new seat post for my road bike
Do I have to find exact measurement of 26.8mm
or what measurements can i work it into?
i am thinkin within 26.5 to 28 mm? or how far bigger would fit and smaller?
perimeters i am looking for?
since post is 26.8 what would be the ideal size i should consider
Reason for want new seat post, I want one with more easier bolts to secure the saddle, as the one bolt thing is awkward at times.
and found same model on ebay with same measurements
now I want to get a new seat post for my road bike
Do I have to find exact measurement of 26.8mm
or what measurements can i work it into?
i am thinkin within 26.5 to 28 mm? or how far bigger would fit and smaller?
perimeters i am looking for?
since post is 26.8 what would be the ideal size i should consider
Reason for want new seat post, I want one with more easier bolts to secure the saddle, as the one bolt thing is awkward at times.
#2
Senior Member
Only 26.8mm will fit.
Make sure that the 26.8mm you measured is accurate. Does it matched any engraved numbering on the post?
Also measure it at 3-different heights on the post.
And measure at the sides and at front/rear positions.
Total number of measurements 3 heights * 2 orientations = 6 measurements
Should be all 26.8mm. Otherwise take the area of largest measurement and see if it will slide down into the seat-tube.
Make sure that the 26.8mm you measured is accurate. Does it matched any engraved numbering on the post?
Also measure it at 3-different heights on the post.
And measure at the sides and at front/rear positions.
Total number of measurements 3 heights * 2 orientations = 6 measurements
Should be all 26.8mm. Otherwise take the area of largest measurement and see if it will slide down into the seat-tube.
#3
Banned
the variations should only be in the thousandths of a MM..
[1st digit past the decimal Point is Tenths, second Hundredths , 3rd is thousandths ]
standard seat post sizes jump in 0.2mm increments. but rarely exactly 0.200mm ..
[1st digit past the decimal Point is Tenths, second Hundredths , 3rd is thousandths ]
standard seat post sizes jump in 0.2mm increments. but rarely exactly 0.200mm ..
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vermilionx
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07-26-12 09:47 AM