Now, this may be totally obvious for those of you who've already built a couple of street trackers, but I must admit to have been a little dumbfounded about how to best attach the seat unit and seat pad.
My seat pad from "First Class Glass" came with a set of rubber mounts and screws. You're supposed to push the rubber mounts into the seat base from underneath, make corresponding holes for the screws in the carbon fibre seat unit (the central of the three holes in the picture), thread the screws through the holes and into the rubber mounts. As you tighten the screws, the rubber mounts inside the seat padding expand and lock everything in place. So far so good. But how do you fix the seat unit in place on the frame, without bulky screws and washers between the seat pad and the carbon fibre? An email to the ever helpful J-W of Dutch Brothers gave me the answer: BigHeads. Mine are – as you can see – home made (from stainless), but they do the job perfectly.