If you want to assemble a plane buy an RV12. If the kit doesn't go together you have done it wrong as they have drilled all the holes and made all the bits. If you want to build a plane buy the Morgan. Its a lot of work .
A RV12 takes between 1000 to 2000 hours to "assemble", a Morgan takes between 400 to 800 hours to "build" using no more than standard shed tools. The Morgan is quite easy and reasonably satisfying to build (could be a lot better also).
Your point is solid but its fact there are thousands of homebuilt aircraft flying designed and built by amateurs - yes, thanks to a lot of work by previous engineers over a long period of time making it possible and of course NASA.
There's also some 20(?) Morgans flying and for some time and veritably do what they were designed to do, sometimes facts over-rule any theory.
I have built 2 Morgans over personally and I have done a full structural engineering and FEA analysis - They are sound and robust and even somewhat overbuilt for the purpose. If I were to be in that terrible situation, I tell you I wouldn't mind being in a Morgan relative to some others I have analysed.
It seems the sierras are a solid design, CASA hasn't said anything against it. I read somewhere that this plane is too light on pitch (lighter than most kit builds). Has anyone flown both the rv12 and sierra?
We are lucky that we didn't have to wait for blokes like Lawrence Hargrave, Octave Chanute, Otto Lillienthal, Wilbur and Orville, Glenn Curtis and a host of others to complete their aeronautical engineering degrees.
The airplane involved in the incident with the ferris wheel is probably unique. I've yet to see conclusive proof that it was actually constructed in Morgan's factory. Where is the proof that the fuel line was fitted in that way by Morgan? Fuel filters have to be changed as part of regular maintenance. Who is to say that someone has been lazy when they last changed this one?
Every airplane we operate is built and maintained with a "she'll be right, mate!" attitude. It just depends on the person involved where on the descending scale from 'near perfection' to "how'd you get away with that?" the expression of the attitude falls.
I thought it was only ostriches than had their heads in the sand, not Emu's, Old Man Emu ?
Anyway i understood CASA validated the questionable building problems by stopping the company building factory built aircraft and from now onwards they can only sell kits unless they DEMONSTRATE compliance with ASTM/LSA standards. That's the way i understood the report and fallout.
I do agree not every plane ever built needs to be certified or built by engineers BUT the buyer or pilot/passengers needs to be at least made aware of these facts. Would something else have taken out the ferris wheel plane in the future like a control stick coming off because of the bodgy job, or the wires attached to the fuel lines wearing through and catching fire, who knows. I just know my partner wont let me buy a plane while the media is full of accidents every week as front page news. She forgets that i ride my V Max to the airport to look around and almost every trip come close to death also.
Very small diameters are not suited for worm drive hose clips (re fuel lines) They distort and may cause a leak. The "barb"on the inner fitting should resist the fuel line coming off. Often the rubber has to be cut lengthwise to get the fuel line off when it's been there a while. Zip ties?? I don't like the look of them but it's possible they would pass a pull off test if the design of the tie was good. Like all things thetywould have a "life", (as the fuel lines do).
Nyloc nuts are OK in some places where no heat is likely to affect them. You can't re use them indefinitely and the thread they go on has to be undamaged, and the correct number of threads sticking through. Nev
The best fuel line clamps IMHO are Norma Cobra clamps which are one piece stainless steel hose clamps that don't come undone & are very low profile with no bits poking out to catch anything. They are removable and re-usable. They are made specifically for the diameter of hose you have. I have used these exclusively in my build. There are special pliers for installation & removal but you don't need them as a good set of ordinary pliers and a fine point screwdriver to aid in removal is all that is needed. See http://normapacific.com/Listing/Products+-+Hose+Clamps/NORMACLAMP%AE+Cobra+One+Piece+Hose+Clips