doxilia

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Larry,

the wing you need for your big Kaos is fairly straight forward to do if you're experienced with CAD. An airfoil program is not needed as the Kaos series airfoils are constant span wise. In other words, there is no airfoil change or percentage thickness change as one moves out toward the tip.

Basically you need to first draw the panel planform view spacing the ribs as desired. Don't worry about them being separated by a constant distance but rather get the ribs spaced for a maximum strength wing. Essentially you want a rib at the fuse side. Also a higher rib density about the LG and root helps and ribs can be a little further apart toward the tip. It is also better to use more lightened ribs than fewer solid ribs.

Once your panel is lofted, you can extract the chords of each rib and using a constant TE thickness you can scale the master root rib to the required chords. A slightly faster method is to simply use a NACA 0016 (or whatever symmetric airfoil you prefer - original Kaos used ~18% thickness) airfoil design software (Compufoil or Profili is not needed) and generate your 16-20 ribs per your desired TE thickness and chord lengths.

I hope this helps.

David

cloudancer03

My Feedback: (22)

Great thread, beautiful planes.makes me want to build .eureka rc has them.i

MTK

Really...! Too bad Rusty. I think some RCU monitors don't really understand their jobs and are too quick at the draw to censor. There are a few good ones too but that doesn't make it even....

And BTW- Your remembering of pattern history prompts me to remember it too. Similar memory from late 70's to present.

BERUSTY

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Thanks Matt!!

i am working on a 110% Miss Norway and think your glass work like you have done for the Extreme flight Extra would be perfect.

Please let me know if you are interested, costs and mold information.

[email protected]

Rusty Dose
Team Futaba

flywilly

My Feedback: (121)

Hey Rusty,
I'd love a %110 Miss Norway kit - if your 'elves' are willing.
I have the MAN plans for Ed Keck's Spinks, but got an MK Spinks kit instead. Great flying airplane, but a bit different from Ed's Spinks design in both wing and fuselage.
I grew up in Massachusetts which was Dave Brown's home state, too. He would come to Mass every summer for a contest or two and to visit family. Back in the '70s Dave was flying at the NERCM contest (big back then, over 100 pattern entries, plus scale too) and had a non fatal midair. He landed uneventfully. Placed his Curare in a fuselage cradle, unbolted the wing, disappeared into his motor home (RV for you youngsters), brought out a new wing which he bolted onto the old fuselage, fueled up, fired up and finished the sequence. I was pretty impressed.
Please keep sharing your memories, they are very enjoyable!
-Will

BERUSTY

My Feedback: (3)

Miss Norway kit?

I will check with Elf Foamy and Elf Laser for the parts cost and let you know Will. It will take a week or so.

8)

Rusty

BERUSTY

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Classic Evolution: The Dirty Birdy

Joe Bridi and his lessor known design partner Lou Stanley, followed their Kaos and Super Kaos with the Dirty Birdy. The Dirty Birdy had long flowing lines, a swept leading edge with a straight trailing edge to take advantage of new technology innovations including high performance engines and smaller more reliable retracts. Like many of the Bridi efforts, Radio Control Modeler (RCM) published a construction article written by our pal Ben Strasser.

My Dirty Birdy is built from the Blue Jay wood kit and was originally built as a simple, capable practice model with conventional retracts (argh!!!) and a muffled OS .65 AX. The fuselage was glassed and painted by a local painter and Dave Guerin Monokoted the wings and stab in 2011/2012.

I did enlarge motor area for a Webra Speed and pipe so I can replicate the engine used on the original. Like many of my classics, it could be ready to fly in a couple of weeks.

Rusty Dose
Team Futaba

BERUSTY

My Feedback: (3)

Classic Transition: Dick Hanson Slim Zlin by Merle Hyde

Classic Pattern as we know it reached a zenith around 1979 just as the turn around schedules were being flown in FAI. The Tournament of Champions rules changes in 1978 was another catalyst for creating scale like models that were not 120 mph lawn darts.

Dick Hanson reworked the Curare into his Tiporare series of models. Mr. Hanson had another challenge...how to build a competitive model to fly at 5,000 feet, where he lived. He championed simple and lite building techniques and as a man dedicated to NOT follow the pack he created the Slim Zlin. The scale looking model of the Czech aerobatic champion offered a new tool to fly slower and be competitive with the new turn around schedules.

My model is from the work shop of Merle Hyde (Chippy's Dad) and is an engineering marvel. The model has a removable tail, wing tips (for different flight results) and a really cool soft mount. The soft mount also mounts the cowl so all thrust adjustments keep the spinner aligned. The finish is clear MonoKote and K&B Superpoxy paint and set up for an enclosed Rossi .60 RE and tuned exhaust.

It is super cool and could also be flown in a weekend if I get motivated.

Rusty Dose
Team Futaba

BERUSTY

My Feedback: (3)

Classic Cassella: The Pulsar Biplane and the Skybolt

I know almost nothing about Norm Cassella other than he was from New Jersey and designed and campainged a fantastic biplane called the Pulsar. The sleek design was fast and groovy and reflected the pattern monoplane smoothness and grace. The kit included a stout and heavey polyester gel coated glass fuselage and foam wings. The top hinged ailerons and eliptical wing tips created challenges best tackeld by an experienced builder but the solid cabane allowed for proper incidence.

The Skybolt is a larger model with a scale appearance. Same construction techniques. Pictures are of my kits.

Rusty Dose
Team Futaba

flywilly

My Feedback: (121)

Hi Rusty,
Love Dick's Slim Zlin. I had a wood/foam version (before he went to a glass fuselage) that flew great. I have a glass version in my workshop that I hope to finish this winter (I don't have as many elves working for me... ). The Slim Slim evolved into the Runaround/Runaway and ultimately into the EMC2. All Dick's designs are terrific performers.
I was fortunate to meet Norm Cassella and watch him fly the Pulsar at many pattern contests. He was a very enthusiastic modeler! Lots of Pulsar kits got sold, but few ended up flying pattern - a great sport airplane with fantastic knife edge capabilities.
This the longest 'teaser' I have ever read. Build threads and flight reports on the Dalotel, %110 Miss Norway and Slim Zlin. Maybe you need an elf to write all this stuff up!
THANKS for sharing!
-Will

BERUSTY

My Feedback: (3)

Rusty's #1 Elf: Tom Dose, 10

Will you are so nice to comment. My career takes most of my time. I am lucky that my youngest son Tom maybe more crazy about airplanes than I am. Chip (12) and Tom competed in the Free Flight Nats in 2007 building 3 hand launch and 3 catapult gliders each.

His little hands are helpful for installing screws in cramps places. He is developing into a fine pilot...fearless. We attended the E-Fest in 2012 and received the magazine cover in the mail! Every where he goes he makes friends.

I am a very lucky Dad!!!!

Rusty Dose
Proud Dad

BERUSTY

My Feedback: (3)

Classic Retracts

A few methods of installing retracts in foam wings.

Rusty Dose
Team Futaba

lonestoner

Looks really compact and neat.

BERUSTY

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Classic 1979 F3A World Championships

The Photo shows Brown, Radcliff and W. Matt, a very young Qui Que Somenzini and Hanno's Magic aka..."Mistake".

Rusty Dose
Team Futaba

MTK

Boy do these bring back memories. Especially driving three retracts with one servo. Wasn't unusual to spend days in retract set-up alone. Typically the result was trouble free operation for several 100 flights.

I learned from one craftsman in my club back in the day that you indeed could drive all three gear and their associated fully articulating doors with one servo and mechanical linkages. Took a terrific amount of thought on the nose gear to figure out the mechanics of opening the door and getting it out of the way and getting the gear out....then reversing the sequence upon retraction, all with mechanical linkages. Making that work consistently for 100's of cycles was a thing of beauty.

doxilia

My Feedback: (3)

Rusty,

where did you hear about that alias for Hanno's 1981 WC model?

Perhaps you're thinking of the pseudonym "Tragic"? Note the rhym to it?

David

BERUSTY

My Feedback: (3)

Hanno's Magic...I have heard Tragic and Mistake as nick name based on non-english speaking translations!...bad airplane in either case.

Rusty

speed-panzer

My Feedback: (1)

There has been plenty of gossip about the Magic. Who can tell facts that it was a bust?

I think Hanno designed it and all its technically details to an extreme, complicated degree. ...but that kind of fascinates me!
Obviously it was a bunch of hard work to maintain the Magic and keep it in competition shape, but the Prettner Father-and-Son team managed well enough to win.
After that success, they turned completely away from that approach, and designed the Calypso, the "trainer plane" - and made it again 1st....

Dominik

BERUSTY

My Feedback: (3)

Magic was a success for the Prettner's!

The model had a variable pitch prop, enclosed pipe, spoilers/flaps... My Calypso is a very fine model that is very simple and fun to fly with the Super Tigre S-61 and an APC 11 x 9 prop. I particularly like the speed brakes on the landing gear which are quite effective and idiot proof.

I think the pilot and dual cockpit also enhances the flight capabilities. 8)

Rusty Dose
Team Futaba

flywilly

My Feedback: (121)

The MK Magic duplicates the version published in a (European - R/CM&E?) magazine which I believe is faithful to Hanno's original design. Here in the US, there was a glass and foam 'knock-off' of the Magic made by a very well known establishment. Many of these were sold, built and flown (even Tony F. had one) and they all had the same idiosyncratic flight characteristics which led to the moniker 'Tragic'. A few years ago I acquired the glass and foam version and compared it to the MK plans. There were many 'minor' differences including a significant variation in the wing incidence, plus wing and stab location. All of which I believe contributed to the unfortunate appellation for the Magic. Hanno won a WC with it in '81; I think the design has been 'tragically' maligned.

MTK

Rusty, no kidding? A bad airplane?

I don't think I even saw one fly but I was quite fascinated by the complexity of that model. Lots to learn from that one. Did he have separate spoilers and flaps on it? I don't remember.

A few years later I tried the combo flap/spoiler, splitting the areas above and below the wing 40:60. That combo of areas resulted in pure drag without pitching, up to around 35 degree deflection as I recall. Thirty five degrees is all it had...

One of these days I may outfit a 2 meter wing with that long learned (but not forgotten) lesson and play the speed game.

BERUSTY

My Feedback: (3)

Magic flight characteristics?

I have never flown one but have tried to read what was available. Mortal pilots complained of knife edge mix issues, reliability and challenges of an enclosed pipe in warm conditions. I belelieve Hanno's was having issues in Spain due to the heat?

I heard similar stuff about the Calypso model which proved to be erroneous with proper CG, engine prop combo and set-up.

Kits come up from time to time.

Rusty

BERUSTY

My Feedback: (3)

Classic Giants of the RCU Community: Rainedave

Rainedave has been one of my favorite contributors to RCU over the years and unfortunately has not been heard from for a long time. His XLTaurus is a combination of artistic genius and great humor. Enjoy!

Rusty Dose
Team Futaba

BERUSTY

My Feedback: (3)

1974 Lancaster Ohio (edited)

Rusty Dose
Team Futaba

TonyF

My Feedback: (92)

Nope. That was at a contest in Lancaster, Ohio. I think 1974.