While reading this thread last night I had an idea. How about custom
adapter plate for the KH bicycle style seatpost that allows you to
adjust the angle of the seat without the need for rails. Rails are
undesirable for a trials uni because the create a finger trap. But
even on a trials uni it is nice to have adjustability for the seat
angle.
The standard welded unicycle style seatposts are also not holding up to
hard use. They break at the weld. The aluminum versions are cracking
at the seat plate mount.
A custom adapter plate for the KH seatpost would solve those problems.
Make the adapter out of steel so it would be strong and wouldn't suffer
the cracking problem that the aluminum plates have. The KH seatpost is
strong so it should avoid the bending problems. You get the best of
both worlds and keep the weight reasonable at the same time. No more
rail, adjustable angle, a strong seatpost, and reasonable in weight.
Then I took a look at Unicycle.com UK and saw this: 'Seat Post -
Suspension Adaptation' (http://tinyurl.com/8g3yd). Same general idea.
So the idea isn't new.
The new and improved KH adapter concept:
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