To avoid the unnecessary flaming/provocation laugh that I have received at the recent thread of Shaving material off heavy rim, I list herewith statements to disclaim my responsibility of flaming that might arouse:-
1. I could be new to all of you and I understand my User name is not presentable under European's eyes, however, I am proud of being a Hong Kong Chinese.
2. I am a qualified engineer with B Sc Second Class Honours (1st Division) in Mechanical Engineering from UK, Chartered Engineer for decades. So please equip yourself with the necessary basic engineering knowledge before you open-fire/start the flaming.
3. I will try to be humble and polite to answer any question. However, if I sense provocation of a fight, there is no guarantee that I do not fight back similar to my responses at the above thread.
This is my original design of a tuned seat post, how it works is quite similar to recent pencil thin seat stay design aiming to make the seat post/seat tube under controllable flex. Feel free to copy the design and implement into your products if you think it is a good idea, all I am asking is to name the design ''Kai-ming's seatpost''.
That is a 27.2mm carbon seatpost with 27.2/31.6mm sleeves fixed to the post permanently (but can be removed easily). The lower sleeve is screwed to the post end while the upper sleeve is AA glued/Epoxy to the post which can be easily debonded by placing a big flat screw driver at the cut slot and turn. I have had problem of slippage of seatpost in carbon frame set, turning the collar too tight might damage the expensive frame set. There is no slippage any more + lower torque at the collar, i.e. a lighter/weaker collar will do the job. Grease can be put at the sleeve/frame interface, so no worry on the fused seatpost/frame problem.
These holes on the seatpost are mainly for making the section flexible which will bend inside the seat tube of the frame under the load of a rider, reduced weight is just icing on the cake.
The post is lighter than any post that I have ever own.