Scorch

Dave, please refresh my memory, you have two landing gear straps, and the item outlined in yellow, the square item is what? Why did you choose that item for the application? I'm sorry to have to ask, you already told me once, but I don't recall.

Thanks again, I really appreciate the help with the QHOR.

Dave McDonald

My Feedback: (19)

Scorch,
The square is simply the backplate from a control horn with a hole drilled in the center and fastened with a #4 sheet metal screw. Since I tend to use pull-pull a lot, I've got lots of spare backplates.......so I just grabbed it.

Unfortunately, somewhere around the 483rd crash, the 1/8" wire gear finally broke as I was straightening it. Oh well.....it survived about 458 more crashes and straightenings than the aluminum gear did.

So I bent a new 1/8" wire gear and attached it the same way. Only this time I used an old servo wheel at the apex of the "V" shape to trap the wire. Those old servo wheels have been sitting in a junk drawer for over 20 years, and I finally found a use for them!

Hope to see you Sunday!



Steve,
From Tattoo's description, it sounds like he's ready to come to Eldon, MO and help us create more divots.




Tattoo,
Ok.....I believe that you flew your SPA3D for 3 hours....
and I believe that you burned over 1/2 gallon of fuel....
and I believe that the SPA3D flys better than the Qhor...
and I believe that the SPA3D harriers better....
and I believe that the SPA3D hovers better....
and I believe that the SPA3D flys worse nose heavy....
and I believe that the SPA3D flys better with an aft CG...
and I believe that the SPA3D flys OK with a bent rail....
and I believe that you flew below yourself in a ravine....
and I believe that you're having a blast with the SPA3D....
but calm winds in Kansas?!?!?!?!?
GIMME A BREAK!!!!

mtthomps

My Feedback: (2)

I made the same kinds of straps in the previous picture by cutting strips of large zip ties and drilling 2 holes in them. Maybe I'm a spad purist.

Tattoo

It's actually been one of the least windy springs I can ever remember here (been in Kansas for 23 years)...I'm beginning to think something is going wrong with the earth's axis...after Spadfest...I'm wondering if Kansas's weather patterns have switched over to the Tennessee area or something and we're getting Arizona's weather

How far is Eldon from the Ks. border?

Also...don't forget the PoorBoy fly-in in Tulsa on the 28th!

Steven Sloan

Eldon is about 150 miles from Kansas City, we are just north of Lake Of the Ozarks. We have two very nice flying sites within ten miles of each. Grass runways and a few trees but more than enough room, even for the big boys!

Dave McDonald

My Feedback: (19)

Straightline distance is only about 105 miles.
Unfortunately, there aren't any major highways that allow a direct route.

Mapquest shows the driving distance from Fort Scott, KS to Eldon, MO to be about 145 miles with an estimated 4 hour driving time.

Mapquest shows the driving distance from Kansas City, KS to Eldon, MO to be about 190 miles with an estimated 3 1/2 hour driving time.

OCTANE75-RCU

Has anyone tried to fold the wing so there is no gap form the spar to the TE?

Tattoo

If you are meaning to "finish" the wing like the conventionally built spad wings...yes...in other words, conventional Spads. As for the QHOR and Spa3d wings for 3D flying, the answer is also yes. What we have seen is that as soon as you make the wing more ridgid, or attempt to "close up" the stepped airfoul...you end up with a plane very unstable at high alpha and rocks like the Six Million Dollar Man's lifting body just before it crashed.

BTW, if anyone is interested in a different way to mount the servos, here is an alternate way. Sorry for the fuzzy pic.

Tattoo

Here's the underside...just a cutting board "H" screwed to the rail with the servos mounted to it.

SeacretsOceanCity

Tattoo Nice idea, but what is the advantage? with the servo location.

Tattoo

Well...it's like this...after bashing it around pretty good yesterday...the last couple flights I was getting a hesitation around mid-point in the rudder servo (BTW...this activity is hard on rudder servos)...I though it was just dirty pot syndrome...so today I go to investigate...and realize I have to take the whole fricking profile fuselage off to get the rudder servo out of the rail. Of course I'm a lazy SOB, and didn't like having to do this. Once I got the servo out...I found I had broken a gear tooth...and really don't know how it was working at all actually. Well...considering the fact that I still suck at hovering...but am getting better pretty fast...and am really having a blast "right on the edge" all the time...I figured I will continue to be hard on rudder and elevator servos for some time to come...but I'll be darned if I'm going to have to mess with the profile fuselage again to work on a servo...hince the Poly servo mount...which I may add weighs just under an ounce and brough my CG back to where I want it...and puts my Spa3d's weight at one cat's hair under 4 1/2 pounds.

Chris-B-chips

will it flat spin?

Steven Sloan

Tattoo had a fun fly at LORCS yesterday, looked like a spad fest. There was a lot of very nice planes, but you seen more plastic in the air. QHOR was the only thing I took. Dave Mc introduced several good flyers to pizza boxes, X-boxes, and QHORs a very good time was had by all.

Tattoo

Righton!!!

YES!!! And VERY well!

hoveralot

Finally, I flew my SPA3D yesterday but my ST .40 engine was having some trouble that couldn´t fix (I think is a tank problem) in the field but was able to fly it 6 times in short periods, what an excellent design, this thing holds in hover very easy, harriers are nice too (no wing rock) and I did 6 dead stick landings without any trouble, in fact this airplane glides much much better than the knife and Super Wasp, I always got a hard time when this two airplanes lost power but with this one it just comes down in a harrier attitude so I just let it dive a little bit an then flares for perfect 3 point landing.

I just bought 2 GMS .47 so next time it will have a good engine to do Flat spins, tail touches and elevators.

My configuration is as follows:

34" wingspan
23" chord
34" 1/2 x 1/2 rail
4" ailerons
Stab and Rudder same size as the 36" version
Engine mount 3" x 5" 3/8" Plywood
ST .40 engine (not enough power at 4000 feet over sea level)
11x4 prop
rudder and elevator servos sideways over the rail

BUCKETOBOLTS

My Feedback: (1)

What kind of rpm's were you getting with the ST40? JUst trying to decide if I'm going to use a FP40 w/MCP or a FX46?

flyboone

My Feedback: (3)

Use the .46fx. You will have much more fun with it.

Jason

hoveralot

I was not able to take an rpm reading but sure enough it was not powerfull for hover and TR. As Flyboone mentioned, it´s better to go with a .46 like the FX.

Next weekend I will try the ST .40 in a different plane to get some readings.

Scorch

Gentlemen,

I need a source for 4mm coroplast in central Missouri Jefferson City or Columbia. Where can I get this stuff?

Thanks.

Dave McDonald

My Feedback: (19)

In Jeff City, I'd suggest contacting Luetkemeyer Signs. I think they were selling 4x8 sheets for about $12.

toywizard

Thats sounds about right. I paid .50 per square ft for a 4x8 sheet from our local sign / print shop.

Their "scraps" really were.

Goinstraightup

My Feedback: (26)

I just paid $7.50 for a 4 x 4 sheet from the local sign shop. That was plenty to make a 46 size QHOR/PQHOR/SPAD3D.

Texas 3D

My Feedback: (16)

well, I think I will build me a SPA3D soon. Have the Choroplast and a 46FX looking for a home, so why not build one.
One question though : Out of what material and how do you guys make the control horns ? Do you bend them ? Where to buy material ?
Also, when it says in the plans "crease flutes", what exactly do you mean Tattoo ? Just cut the flute open ?
Also, have you tried to use 2 aileron servos so you can run flaperons, or are flaperons not necessary ?

Thanks

Hacker

Ulf, i just use regular store bought horns...adds 1.98 $ too cost of plane.
where you make the wing fold just use a phillips head screwdriver and run it along the flute with enough pressure to put a "crease mark"in the flute (make crease marks on inside of wing) do at least three flutes then fold wing over ...creases make the fold uniform and easier to do.
i use 2 aileron servos but i dont use flaperons...show us the pics when your done

Tattoo

I make mine from 2 1/2" OD PVC gutter pipe I bought from ACE hardware. I simply hack a slice off the pipe like a piece of salami...cut each side so I have 4 "corner" pieces, then angle them and drill em. With tin snips, it goes real fast.

Kraut also uses two aileron servos, but he's not using flaperons either.