Here's the thread.
http://www.vansairforce.com/community/showthread.php?t=10244&highlight=turbine+video
Link to video:
http://www.youtube.com/watch?v=a6M3A4ImsjQ
I ran my RV-10 without the wings on and it was probably the most powerful engine put on an RV. No WOT.
Apparently a breaker left open by an avionics tech the day before was forgotten by the cockpit crew. This caused the downlock to disengage and the retract sequence to start.
Anybody done their first engine runs with the wings off? Any problems?
My dad ran up his 7A w/180 h.p. CS (w/o wings) and the only issue encountered was when going wide open throttle it pulled so hard the brakes wouldn't hold it! A chain to the pick up truck solved that issue...
Doug Lomheim
RV-9A / 13B FWF
Van's very specifically recommends against it for the other (non-12) RV models. I'm not sure if that applies to the 12. If it does, why would you go against their recommendation?
Not sure I understand the engine check before going to the airport. The engines are new and run tested at the factory. Making hook up corrections at the airport should there be a problem is no different whether the wings are on or not. May be harmless but I wouldn't put the twist and vibration on the fuse w/o the dampening affect of the wings unless there was no other choice. Just sayin.
Dick Seiders
Wow! What a response to one little question!
Didn't mean to start a debate!!![]()
that is a lucid, well thought out, and technically (sounding) supportive basis for such a practice doing no harm. I still wouldn't do it.
Chose not to do so here since I know nothing about the RV-12. Maybe worth checking the design to see if similar?Whilst building the RV-3 fuselage, it suddenly struck me there was a discontinuity in major longerons in the lower fuselage between the main and rear wing spars...
It made me go back to the plans and check I had not omitted something... and then realised, no I had not, the "load" path is provided by the wing structure itself.
If you do choose to run the engine without the wings bolted on, think through how the "box" rigidity of the fuselage (in twist) is compromised by no wing box, and also the straight line path from engine to tail (i.e. tying the tailwheel down does not really help since there is a structure "gap" between the wing spars). Trying to quantify these elements is nigh on impossible - the only people qualifed to answer are Vans, and we know their opinion on the matter
Andy