Seatpost sizing

[kkaye]

Raleigh USA Technium road frame -- don't know the year, but 130 mm spacing with semi-vertical dropouts. I need to find a seatpost for it.

As close as I can measure it, the seat tube ID is 1.022 inches, or 25.95 mm. I assume a 25.8 seatpost is therefore correct. Can anyone confirm this? Thanks.

Mike Yankee

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[Phrantic]

At 25.8 or 26.0, a high-carbon plain steel, maybe seamed, maybe seamless, such as Tange HiTen or Tange Mangaloy or the equivalent.

[Phrantic]

The Technium system allowed many gauges of tube in the same joints. Various Technia used 25.8, 26.0, 27.2. .

Try the 25.8 and see that it isn't overly tight farther in the seat tube.

[DrSpock]

From Sheldon Brown's website...many seatpost sizes:

http://www.sheldonbrown.com/seatpost-sizes.html

[DrSpock]

What type of tubing is used for the seat tube?