Aerozona
Posts: 203
Joined: 7/17/2007
From: Glendale,
AZ, USA
Status: offline
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To start off with I call things as I see them right or wrong and no matter who or what the person is…we ALL put our pants on one leg at a time!
First, this is a public forum. It doesn’t belong to any individual or person or Mike McConville. If you had a serious enough problem that you didn’t want others to comment on or be a part of then you should have dealt with Mike by PM or Email!
Second is my personal take on this and again this is a public forum. I’m really questioning your stated experience here. You have said and posted things here that are not consistent with an experienced builder or flyer. (non that I know of anyways!)
As you prepare to build a plane, especially a giant scale aircraft, there are some inherent things that ANY good builder looks after, does not guess at, does not for get to do, does not try to skip over as the plane moves towards the maiden day. These things come naturally to you as a good builder, as you build not after the maiden flight. Some of these things are weight distribution of components, C/G values, electrical system draws & component wiring values, control surface incidences, control throw values, hardware quality and capacities or limitations.
You stated after the crash…
quote:
Extra Addict,
I weighed the following:
DA50
Ignition System
1500ma Futaba 4.8v Pack
Slimline Pitts Muffler
Choke Servo (Futaba 9602)
Total: Approx. 5lbs + Plane
I never weighed the plane, but I cold not keep it from snapping. It always wanted to snap off to the left.
I lowered the throttle to 1/2, and tried to trim, but it snapped and I could not recover. I never tried to check the incidence.
These are just some of the things I’m seeing here that ARE consistent with an inexperienced builder or flyer for sure!
Good builders, not necessarily over experienced, all follow the planes manual as a guideline to the planes success. If you’re an experienced builder you will already know where you can vary somewhat from the manual’s suggested settings and make it come out right. If you’re not a seasoned or veteran builder, then you build the airplane following all the manual’s suggested setting and set-up to the letter!
An experienced builder/flyer already knows there is a lot more to building a great flying plane than just what is in the manual. You have to learn this from experience and can’t get it out of a book. Check out my latest build, SU26MM and you’ll get an idea of what I’m talking about. My New Sukhoi Build Engine box reinforcement, airframe check & reinforcing all glue joints, coatings, electrical component choices & placement, additional hardware and component hold-downs and fasteners, just to name a few that aren’t in the manual. And the most important…all done and checked, and then triple checked again BEFORE the maiden flight!
I really hate to see any flyer loose a good plane for any reason. I have been there myself and it’s a learning curve that we all have to go through. In finishing up I honestly have to say that I do believe that you didn’t have your weight distribution correct or you simply “jerked” on your controls with a plane that was a lot more than you were really ready for.
In my stable I have 11 Hangar 9 planes ranging from an Alpha 60 trainer to my newest Sukhoi SU26MM and they all were great builds and fly just fine! I probably have twice as many again that I have built for others and all with the same great flying characteristics that is Hangar 9. Not one ill-flying one in the bunch!
Again, sorry for your loss but maybe you might want to take a look in other areas for some of the crash faults besides the planes manufacture? 
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"If your plane goes up, it WILL come down...your choice of decent is CRITICAL"
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Printable Version
All Forums >> TEAM RCU >> TEAM RCU - Mike McConville >> RE: H9 Extra 260 w/DA 50 Snapping/Crash 
RE: H9 Extra 260 w/DA 50 Snapping/Crash - 
at about 80 mph(guess). Just prior to impact the aileron servos and rudder servo sheared leaving me with only throttle, smoke, elevator and ignition. Although it didn't go well after that it could have been worse. Luckily no one was hurt. I ordered a new tailwheel assembly, left wing, and engine cowling and lots of plywood. That and several hours of work and she'll fly again...I hope. I was amazed that the plane did so little damage after basically landing in a knife edge spin. 
One good thing, the left wing, the bent one was the one that got damaged. So it will probably fly better anyway when it's rebuilt anyway. 
