Ed, seattube length and toptube length are not strictly dependable on each other, right? so frames come in 56x55 and 56x56 sizes for instance. what's "very long" btw? 13cm? or longer?
i'm not making a fuss of this, but i'm just wondering to myself, which exactly seatpost length (showing out of seattube) and stem length would make people go, "fuck, the frame's small for you"?..
As other has said, top tube length is very important and if a bike fit well, don't worry.
I need a 57cm seat tube and a 55cm top tube if I want to ride with a 100mm stem (personal preference), but there's rarely any frame in that size (probably once in a blue moon), I went for a frame that's 55x55 square, sure there's a lots of seatpost and the stem need to be flipped upright to be in a comfortable position, but it fit perfectly (and done so by Bike Whisperer).
Seatpost won't affect how the bike handle when increase a couple millimetres or so, but a stem length increased a couple millimetres will.
Yes I'd says 130mm would be very long but that's entirely down to you.
As other has said, top tube length is very important and if a bike fit well, don't worry.
I need a 57cm seat tube and a 55cm top tube if I want to ride with a 100mm stem (personal preference), but there's rarely any frame in that size (probably once in a blue moon), I went for a frame that's 55x55 square, sure there's a lots of seatpost and the stem need to be flipped upright to be in a comfortable position, but it fit perfectly (and done so by Bike Whisperer).
Seatpost won't affect how the bike handle when increase a couple millimetres or so, but a stem length increased a couple millimetres will.
Yes I'd says 130mm would be very long but that's entirely down to you.