My son Peter is working on getting his 1989 finished RV-4 ready for IAC sportsman class airobatics.
He called me @ work, so I asked him to measure his gear legs, which we presume to be the 'short' legs.
He measured approx. 30" from the bottom of the gear leg socket on the engine mount, to the guesstimated center of the axle (wheel pant on).
I hope that is useful info...