Not splines but mine has some grooves milled into it, just for aesthetics or summat.
I've got a similar seat post, an ITM, 26.8mm, but it does fit into a normal seat tube though.
Not splines but mine has some grooves milled into it, just for aesthetics or summat.
I've got a similar seat post, an ITM, 26.8mm, but it does fit into a normal seat tube though.
aesthetics or summat.
Ah yes have seen that before but not often. An alternative to have a "split" in the seat tube being gripped / squeezed together by a clamp or bolt.
The bolt brings the two shaped parts together to directly clamp the seat post rather than clamp the seat tube to the seat post. Unusual but quite neat.
I think you confused everyone with "splined" in the title.
I think grooves in the seat post were from the days when weight reduction was king.
Brake levers, chainset and anything possible were drilled to save weight.
I think grooves in the seat post were from the days when weight reduction was king.
I think grooves in the seat post were from the days when weight reduction was king.
Brake levers, chainset and anything possible were drilled to save weight.
Indeed. They're called "flutes." Top flight racing machines had them machined in(!) to remove material and save weight.
Bikes for us mortals had them cast in, which required a greater wall thickness to accommodate this, so didn't save weight but looked tres cool.