Hangar Flying

First, let me suggest that you post safety related questions of this (or any other) related nature on a forum that has more members, viewers and activity - you'll get far more response and from far more people.

Despite the aircraft having done three test pilot flights, I have to prove the safety aspects of the installation and the effects on 'stalling' speed - it nods at 50 kts.

At what CG does the nose bob at 50 KT (I assume KIAS - you don't state whether KIAS, KTAS or Kt GS). At what Gross Weight does it bob at 50 Kts (I'll assume IAS for expediency)? Have you tested the stall speeds at forward most CG (97") all the way back to aftmost CG (103"), and with weights from minimum achievable up to your proposed 1600 lb. MGW? At all intermediate combinations as well? And accelerated stalls, from 0 to 60 degrees of bank? Once you've done all that, you'll actually know the characteristics of your plane - until then, you don't.

I found that Micro Aerodynamics declare, and issue a placard, of airworthiness provided no more than 5 VGs are missing.

At least in the USA, there is no such thing as "airworthiness" for experimental aircraft - only type certificated aircraft can be "airworthy". Don't know if it's the same in the UK. In any case, Micro Aerodynamics can have no knowledge of and can make no categorical statements regarding the safety of a plans built, one off experimental amateur built aircraft - them saying "up to five missing VG's" is a good start at understanding the possibilities for your plane, but not particularly meaningful.

I can supply photos of the installation but am short of a suitable/professional diagram of placement and chord etc detail that would satisfy the scrutineers  Can anyone point me in the right direction?

So here:

http://cozybuilders.org/cad_files/

down near the bottom under "Miscellaneous" are some PDF's of VG size and placement used for COZY MKIV's. The Long-EZ would be essentially identical, measuring from the strake/wing intersection for the wing placement and from the fuselage side for the canard placement.

But whatever documents you provide, only a full test program and results presentation will show that the plane is, in fact, safe within the approved operating envelope under all circumstances.

YMMV because it depends on the geometry of the installation but I used the Aircraft Spruce part number 05-01177 in my Long-EZ.

I've collected up a number of Brock parts over the years and finally started putting it on a database.

If you have collected up parts the new guys could be reassured to start building them.  Send me the exact part number and the price.  (I use 75% of my last known Brock catalog for unused and 50% of the same for used but usable parts. 
Lots of manual speed brake and manual nose gear parts are roaming around.  Most of the other stuff is pretty easy to make - except the GU elevator hinge stuff - and I've fallen into a few of them recently too.

If you have Brock parts and want me to put them in a master list for sale, or if you think you need to manufacture everything these days as Brock has been gone a long time, get in touch, I can stop by my parts stored at the hangar and see if I might save you some work.  If Brock were charging for things today, his prices would be double - after all the US Dollar has been devalued by all those wars and spending beyond collecting taxes.

David Orr
949-939-1479 David at CanardFinder dot net

Project is now sold, thanks everyone!

Now on Ebay auction for the next 7 days.