Tuesday, December 9, 2008, 3:32:27 PM, dan kasha wrote:
> I believe that this is enough, but wanted to check. Also, what is
> the reason for the minimum? Is it to protect the post, the
> frame, or both? I bet people have stories on this.
When I was a small kid, I had a bike that became too small for me, and IIRC it ended with me raising the seat as far as I could (leaving just enough of the seat post inside to clamp it, i.e. maybe about 20-30mm), and promptly breaking the seat lug off the bike. Of course, that was a cheap children's bike, but I would imagine the same could happen on a on-topic bike. I am no expert and cannot say how adequate would be the 70mm you mention, though.