Originally Posted by
fa63
Why should a custom frame be designed around a zero setback seatpost? I have two custom frames and to be able to use a zero setback seatpost, the seat tube angle would need to be about 70 degrees, at which point there wouldn't be much clearance for the tire without resorting to long chainstays... So sometimes it is just not practical or the best thing to do.
I'm guessing that's why you went with a custom frame - because you need setback or very slack seatpost angles.
A setback seatpost is to permit riders to use stock smaller frames without being cramped.
It sounds like you're asking if something that's used to compensate for a poorly fitting frame should be considered for your custom frame. I'd say no.
I think Scooper's comment that if you don't need it, why should the OP ask for setback?