I don't know about the flaps on the Nobler but it looks to me this guy could steal most of your girlfiends away.  

Things about flaps...that makes ya go-------------hummmmmmmmmmmmm?
In the late 70's I was assigned to a wind tunnel test that was being conducted by a Swiss team of high performance sail plane glider nutzski's that were looking for ways to distribute the excessive forces that hinged flaps and ailerons were causing not only stress but also cause excessive stalls and including loss of altitude at higher altitudes where the air becomes  thinner?

For competition sail plane and sailboat rich folks...nothing is too krazzzeeee' or expensive for big boys with too much $$$ to spend on their toys. (Boeing in those daze days..were taking all kind of weird stuff from all kinds of BIG$$$ BOYS WITH TOYS.

For most of us model makers and the design team of Aero engineering staff...the first road block was simply trying to find  the right material with the correct amount of stiffness and flexibility that would allow the flaps (without a normal hinge line)to be workable...
but remain and afixed  solidly at the wingtips but still be flexible enough for  the pilots controls that would allow the wing itself to simply warp into the up or down configuration when control input to the flexible trailing edge of the sail planes long wings?

This test was a real  HB~>BANGER for everyone. Building a flutter model wing actually with such capibility was not a problem for a test but the R&D development time frame.

Sadly this sail plane flexible control surfaced project ran out of tunnel time and budget and the team ended up taking the test back to the Russian facility for further studies....

Often I keep thing back to just MAYBE A FIXED FLAP CONCEPT...FOR CLPA MODELS...could have some kind of merit...especially on HIGHER ASPECT WINGS..

After reading this drivil (too many cups of Starbucks java again)...I almost deleted this post.
Any thoughts on flexible moving surfaces on our wings n' elevators.

I like big stiff flaps, they make the model look important OR is that impotent.

Great to have you back Leo...and you are RIGHT ON about LOOKING IMPORTANT...and also perhaps EQUALLY CORRECT when you said IMPOTENT!  

Especially when trying to take off a grass field that hasn't been mowed for a while...
In the good old daze-days... (1956 Collins Iowas school yard) brings back memories  of all those  busted honey colored transparent funny looking  plastic props...while trying to HOP OFF GRASS with flapped stunters.

I couldn't believe my eyeballs...the first time that happened and I actually thought that I had turned my handle upside down by mistake...when the prop wash re-direct the airflow onto the flaps instead of elevator...the result being that the flaps took over the elevators dirty double duty...LIFTING THE TAIL...AND TURNING THAT OLD PANTHER INTO A WEED WHACKER.

Well, the kid looks OK, but he can't spell for nuttin'!

Jim

Ha! Must be related to the SHULTZ CLAN? Spullin' twernt' ez fur me?

FOURTY FARTY' HAD A PARTY?

This looks a bit like a Greenaway LJ. The idea was huge flaps that didn't deflect much. Worked pretty well.

Hi there, I recognised myself as the pilot with my Fourty Six-II model. I was part of the Dutch Team in the 1984 Chicopee World Championships. After the competition I travelled around for 6 weeks and spent some time with Windy Utknowski. I remember Windy told me the design was from Big Jim Greenaway. Het was kind enough to lend me his Reno Sweeper for a local Stunt Competition. I never flew a .60 before. We went practising and it felt good right after takeoff, without warning I threw it into the reverse wingover. I loved it. That week-end I competed at the Garden State Circle Burners against a lot of other pilots and finished 2nd. Jimmy Casale won the competition. I regret not having that model to compete in the WCh. I still have the trophy in my building room.

After returning home I constructed a big flap model, which did not work very well. The next season I constructed the Fourty Six II which was very good. In 1988 I flew 14 competitions in Europe, 7 wins, 6 second and 1 third place. My best season ever. The picture is from 1987.

Big flaps work but.... if they are warped you lose line tension everywhere. During the season I replaced the flaps 4 times. For weight reasons I decided to increase wing area and decrease the flaps. In 1994 I used roughly the same model for the World Championships in Shanghai, placed 21st and was very happy with the performance.

When leaving the USA Windy Urtknowski gave me a couple of pictures. Top one is Big Jim with one of the big flap models. Bottom pic is the Sweeper Reno that Windy was kind enough to let me fly. These guys really know what they are doing.

More interesting stories? Well after the 1996 WCh in Sweden I retired from active competition. The story seemed to end there. Then electric came along and I helped Bruno van Hoek to make it to the 2006 WCh in Spain, It worked but we did not know why. The years following that we learned more about electrical flight, made out own timer and this year I did one competition to prove my concept is working.

More on this in the engineering section of this forum.



 

Things about flaps...that makes ya go-------------hummmmmmmmmmmmm?
In the late 70's I was assigned to a wind tunnel test that was being conducted by a Swiss team of high performance sail plane glider nutzski's that were looking for ways to distribute the excessive forces that hinged flaps and ailerons were causing not only stress but also cause excessive stalls and including loss of altitude at higher altitudes where the air becomes  thinner?

For competition sail plane and sailboat rich folks...nothing is too krazzzeeee' or expensive for big boys with too much $$$ to spend on their toys. (Boeing in those daze days..were taking all kind of weird stuff from all kinds of BIG$$$ BOYS WITH TOYS.

For most of us model makers and the design team of Aero engineering staff...the first road block was simply trying to find  the right material with the correct amount of stiffness and flexibility that would allow the flaps (without a normal hinge line)to be workable...
but remain and afixed  solidly at the wingtips but still be flexible enough for  the pilots controls that would allow the wing itself to simply warp into the up or down configuration when control input to the flexible trailing edge of the sail planes long wings?

This test was a real  HB~>BANGER for everyone. Building a flutter model wing actually with such capibility was not a problem for a test but the R&D development time frame.

Sadly this sail plane flexible control surfaced project ran out of tunnel time and budget and the team ended up taking the test back to the Russian facility for further studies....

Often I keep thing back to just MAYBE A FIXED FLAP CONCEPT...FOR CLPA MODELS...could have some kind of merit...especially on HIGHER ASPECT WINGS..

After reading this drivil (too many cups of Starbucks java again)...I almost deleted this post.
Any thoughts on flexible moving surfaces on our wings n' elevators.

I monkeyed with the concept for awhile on a flat-wing combat plane..."flex-tail", I believe I christened it the "Stone Stabilator"!  It worked really, really well on some, not so well on others.  I couldn't find a construction method to make the flex predictable from one model to the next.  Each was unique in amount of flex, shape of flex, BC authority required, etc.  Not much good for mass production as I had in mind. 

Photos of windy with the BJ's models Bij Jim designs Windys Artistry the white ship is the BJ 900 flaps 5" at root
Jose Modesto

Ahh, Shultzie,

Those huge flaps would work great at 7,000 feet altitude with 90 degrees temperature.  Or, lower down if
you limit their throw to 10 degrees!

Jim Pollock   

Jose,

Now you're going to make me pull out the pictures of MY LJ. Sigh .... It's not as pretty as yours.