Join Date: Jun 2009
Bikes: Rans Tailwind, Electra Townie with hub motor, Burley Koosah
You can get a nice angle back on the seat by moving to the different holes in the bracket under the seat. I think there are four in front, and four in back.
I found when I angled the back of the seat back, my butt slipped in the crack behind the bottom of the seat and the back of the seat.
This is a common problem on the Koosah. They sell kits to deal with this for $150, but I just adjusted the seat the way I found comfortable with just 2 of the four bolts that hold the seat on, and then drilled new holes were I wanted the seat to stay in the plastic on the bottom of the seat. Then I put the bolts back in the new holes.
The seat is now totally comfortable, and it didn't cost a dime.