http://www.mmrca.org/lance/sledframe.html

Check out Lance Cambell's project for inspiration. There are threads out there of electric pusher-prop foam models of the SR-71 as well as EDF models. The videos that I have seen show that the SR-71 CAN be flown. I know the light foamies are so much different from the heavier glow/turbine type's but if the power is there, the flight should replicate the smaller model. I have an Enforcer kit in the box that I was thinking of bashing into a Wren powered SR-71. As described in my other post, single engine between the rudders, Hot Spot style. I guess it could be fitted lower inside the fuselage as the one picture shows. I have got the RC Airplane plans for the pusher prop through the wing for the SR-71 also that I may incorporate into my Enforcer bash. If I could get my hands on a fiberglass fuselage, all the better.