RE: Cold Duck - Build
aerowoof, that is correct, 3 ½”.
rainedav,
Measured at the root of the wing, the center of the gear blocks are 5” back from the leading edge. That position is pretty good compromise, letting you rotate the nose gear off the ground at fairly slow speed but there is enough weight on the nose gear for good steering in windy conditions. I fly off tarmac, so ground handling is important.