Hi,

I recently bought an older road bike (mid 80's), and it has a nice alloy seatpost on it, with finely machined flutes up the side. I've seen this style before, but I don't understand it.

Why flutes? Appearance? Grip? Anti-seize? Weight Reduction? Aerodynamics? Its a neat seatpost, and I've got no problems with it, I'm just curious as to the engineering choice...

peace,
sam