H9 Extra 260 w/DA 50 Snapping/Crash
#52
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RE: H9 Extra 260 w/DA 50 Snapping/Crash
Here are some Picture of the Hanger 9 35% Extra 260 ARF DA 100CC
Pilot: Dave Scott
Location: Fond du Lac. WI
Date 06/21-2008
Slide show
[link=http://www.fdlaa.com/2008/Slideshow/DS/]Slideshow[/link]
Hanger 9 35% Extra 260 ARF
[link=http://www.fdlaa.com]fdlaa.com[/link]
Pilot: Dave Scott
Location: Fond du Lac. WI
Date 06/21-2008
Slide show
[link=http://www.fdlaa.com/2008/Slideshow/DS/]Slideshow[/link]
Hanger 9 35% Extra 260 ARF
[link=http://www.fdlaa.com]fdlaa.com[/link]
#53
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RE: H9 Extra 260 w/DA 50 Snapping/Crash
I'm usually an observer here but I also have a 260 with a DA50. Mine pull hard to the left also but it was a simple problem the ailerons had a pretty bad twist in them. After a little work with a heat gun the problem went away. I really flies very nice with factory settings.
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RE: H9 Extra 260 w/DA 50 Snapping/Crash
I have/had an extra 260 with a DA50 also. I noticed on mine the left wing leading edge warped up about a 1/4 inch. After 10 hrs of hard 3D the firewall and engine mount box came apart (the plywood failed). I got it fixed and beefed it up a little and it flew great...except for the hard rolling tendancy pulling out of a dive or during transition from slow flight to true Harrier.
Not to worry though. Last week someone asked me how fast it would go and I showed them...I got aileron and rudder flutter[X(] 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.
I have 103 landings on the CF gear with little to no delamination. I still think it's a great aircraft. One of the reasons the plane may seem a little more difficult to pull out without snap rolling could be the chord thickness of the wing. Although this plane is much bigger it had the same wing root thickness as my Showtime 50.
David
Not to worry though. Last week someone asked me how fast it would go and I showed them...I got aileron and rudder flutter[X(] 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.
I have 103 landings on the CF gear with little to no delamination. I still think it's a great aircraft. One of the reasons the plane may seem a little more difficult to pull out without snap rolling could be the chord thickness of the wing. Although this plane is much bigger it had the same wing root thickness as my Showtime 50.
David
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RE: H9 Extra 260 w/DA 50 Snapping/Crash
I Have a Hanger 9 260 with a DA 50 It flies great one of the nicest planes I have. It is a little hard for me to see so I added some bright red to the bottom leading edge about 8" wide and it looks much better
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RE: H9 Extra 260 w/DA 50 Snapping/Crash
You guys have got to be kidding, I was looking at this plane for my first "giant scale" but now it is definately off my list. I dont think this is a true 50cc aircraft. It is has a specified weight of 11 to 15 lbs that is quite a spread. I would think it would fly great at 11 to 12lbs. but 15? My buddies QQ 86 weights in at just under 16lbs, now that is low wing loading. Sorry guys, I think this is a glow plane that Horizon is trying to pass off as a 50cc model to get into the market cheaply.
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RE: H9 Extra 260 w/DA 50 Snapping/Crash
ORIGINAL: lockjaw-express
Mr McConville,
I have my expo set at -70%, as I do all of my 3D planes.
Mr McConville,
I have my expo set at -70%, as I do all of my 3D planes.
I flew one airplane I accidently set the expo to -. What a hand full it was.
Tim
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RE: H9 Extra 260 w/DA 50 Snapping/Crash
Great Forum! Good info from experienced piolots. Plane reacted left on take off? Just a thought or two. Was a match box used on the Aileorns? I'm in the final ground trimimg stages of a 35% H9 260. First time for me using a Futaba match box for ailerons. I struggled through a learning curve getting the throw rates equal. If the left side was wrong it would seem possible to cause this uncontrolled snap on a perfectly good plane with a perfectly good pilot. After setting everything up I shut down the plane and radio for the evening. Next day I found that when I would turn everthing on I both ailerons moved in the same direction like flaps. I noticed I had not set the matchbox back to "0" after trimming. After doing so now everything is fine. I assume this caused my "flap" problem.
Although not likely the case here, I recently had an older 33% Cap 232 that flew on rails. One day all of a sudden it went haywire. I was about to crach from out of controll so I pulled into a hove and the plane spun on verticl axis and I was able to figure what was what. Assuming it was a receiver problem I brought the plane back at slow curising speed with no more problems. (odd!) However, when speed increased the plane snapped left. After landing with trembling hands I went to clean the plane only to find the large monocote blue stipe on the bottom of the left wing had delaminated and hung on both aileron servos effectively creating air pocket rendering the plane uncontrollable on all but near landing speed. Is it possible for new monocote to let go during maiden flight?
Although not likely the case here, I recently had an older 33% Cap 232 that flew on rails. One day all of a sudden it went haywire. I was about to crach from out of controll so I pulled into a hove and the plane spun on verticl axis and I was able to figure what was what. Assuming it was a receiver problem I brought the plane back at slow curising speed with no more problems. (odd!) However, when speed increased the plane snapped left. After landing with trembling hands I went to clean the plane only to find the large monocote blue stipe on the bottom of the left wing had delaminated and hung on both aileron servos effectively creating air pocket rendering the plane uncontrollable on all but near landing speed. Is it possible for new monocote to let go during maiden flight?
#59
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RE: H9 Extra 260 w/DA 50 Snapping/Crash
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…
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. [link=http://www.rcuniverse.com/forum/m_7846501/tm.htm]My New Sukhoi Build[/link] 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? [8D]
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…
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.
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.
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. [link=http://www.rcuniverse.com/forum/m_7846501/tm.htm]My New Sukhoi Build[/link] 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? [8D]
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RE: H9 Extra 260 w/DA 50 Snapping/Crash
Aerozona,
I don't really know why you have issue with a 1500mah 4.8v ignition pack. That is the recommended battery size from the DA manual. and should give about two hours of flight time.
I don't really know why you have issue with a 1500mah 4.8v ignition pack. That is the recommended battery size from the DA manual. and should give about two hours of flight time.
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RE: H9 Extra 260 w/DA 50 Snapping/Crash
ORIGINAL: 3D_Junkie
Aerozona,
I don't really know why you have issue with a 1500mah 4.8v ignition pack. That is the recommended battery size from the DA manual. and should give about two hours of flight time.
Aerozona,
I don't really know why you have issue with a 1500mah 4.8v ignition pack. That is the recommended battery size from the DA manual. and should give about two hours of flight time.
I mean no disrespect here...Thats the DA recommended MINIMUM requirement! I have been involved with the Southwest Region of IMAC for over 6 years now and have not seen yet 1 IMAC competitor in compitition or practice, that uses anything even remotely close to a 4.8v nicad anything! And geeze, there must be a reason for that, well let me see...nicad 4.8 is very unreliable not to mention unstable AND they dont want to loose their investments maybe???
You run what ever you choose, I'll stick to 6v nimehi 2700's and 7.4 Li-Poly for my hard earned bucks investment in my planes and my radio, thank you very much!