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  1. #1

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    KAOS AND RELATED PLANES AND INFO

    This thread is to be a "sticky" for the wealth of information regarding the Kaos and other related planes. Please post information here including sources, building tips and the like. I can merge other threads into this one if the need arrises.

    Enjoy,

    EXCAP232

  2. #2
    rainedave's Avatar
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    RE: KAOS AND RELATED PLANES AND INFO

    Thank you, EXCAP232. I think this will prove a popular and useful thread.

    Although not strickly a Kaos - unless you want to call the Kaos a Sun Fli Mk V - I'm finishing up a 36" 1/2A Sun Fli IV. So here's a pic. I can email plans.
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  3. #3
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    RE: KAOS AND RELATED PLANES AND INFO

    Here's a look and a link to a 1/2a Kao-tic. It's still in the "refinement" stage, but I've mostly built the airframe. It should have an AUW of ~12-13oz and a good reed valve Cox will put out close to that in thrust.

    http://www.ulmer-rc.com/files/kao-tic.zip
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    Coming soon to a grass field near you...

  4. #4
    8178's Avatar
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    RE: KAOS AND RELATED PLANES AND INFO

    Oh goody!

    My modified, kit built Tower Kaos 40. 5 lbs. 3 oz. and powered with a Irvine 53 ABC engine with muffler baffle removed and spinning a Top Flite 10-7 power point prop at high RPM. The power of the 53 over powers the drag of the thick wing pulling it along smartly with unlimited vertical. The airframe is covered with MonoKote and the radio used is a Futaba 9C Super with a Futaba PCM receiver. I started out with an OS 46 FX but it wasn’t quite fast enough for me.

    Early on I made the mistake of using the manufacturers recommended prop that was too big for my style of flying and after going to the 10 – 7 it really came alive. The 10 – 7 lets the engine unload in level flight and hold a high RPM on the extended vertical. I do not know how fast it is but it easily keeps up with the diamond dust deltas that fly at our field. I think the speed would be close to my Tiporare.

    The Tower kits come up on ebay often but I have another kit stashed for backup.

    My son took a few video clips but was so mesmerized by the impressive speed and performance missed the spins and slower maneuvers. The video quality could be better but it does give you a pretty good idea the kind of performance that is provided with the light airframe and substantial power.

    The video includes:

    1. Take off.
    2. Right to left pass.
    3. Left to right pass with a vertical pull up to unlimited vertical rolls. Luckily you can not hear all of my son’s comment about the vertical performance β€œholy s****!”
    4. On the far right end of the field, vertical climb to a Β½ roll and split S back down to line up for a right to left slow roll the length of the field.
    5. Landing.

    The video is at http://media.putfile.com/Kaos-40-Kit

    I believe the whistling sound is cause by the wheels on the fixed gear hanging out in the high speed air stream. It is a lot of fun to fly but because of the combination of small size and high speed it takes some focused attention.



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  5. #5
    rainedave's Avatar
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    RE: KAOS AND RELATED PLANES AND INFO

    Man, 8178, you even make the basic, no frills (but noble) Kaos look fantastic! I may have to get the Super Kaos 40 plans from RCM and save up for one of new Webra .55s that just came out a while back. Or maybe a Jett .50. Actually, that would be wat too fast for my thumbs.

  6. #6
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    RE: KAOS AND RELATED PLANES AND INFO

    Thanks raindav! It is just a standard Tower Kaos 40 kit with a narrowed fuselage, a more rounded top and an enclosed nose on the front. My rule is, build them light and the more power the better. For my flying style, it is imposable to be too fast with a β€œclassic” pattern aircraft. On my next one I’ll lower the engine thrust line a little for a better nose shape.

  7. #7

    RE: KAOS AND RELATED PLANES AND INFO

    In 1981, I placed 2nd in Sportsman at the Southwest Championships in Dallas, Texas with an "Utter" Chaos, which I believe Bridi produced for Hobby Lobby. It was a slightly longer tail moment than original Kaos fuse with a Curare wing. I had an OS Max .61 FSR and a pipe on it. Simple fixed tri-gear. I outflew Curares, Arrows, and Dirty Birdys with it. Legendary design, the Kaos.
    Regards,
    GPB
    Representative of<br>
    GCBM R/C Enterprises


  8. #8

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    RE: KAOS AND RELATED PLANES AND INFO

    Well, since this is an info thread and no one has posted this yet, here are places to get your Kaos from

    Kits - Bluejay Models

    http://www.bridiairplanes.com/


    Plans - RCM plans

    http://www.rcmmagazine.com

    Go to the RCM Store, then Plans, and then search for "Kaos" and "Super Kaos"


    You might want to get the plans soon, though, as RCM could vanish at any moment given their business situation...


    Mark
    Waco Brotherhood #4

  9. #9
    rainedave's Avatar
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    RE: KAOS AND RELATED PLANES AND INFO

    I have redrawn the Sun Fli IV in Cad. The drawing is scaled to 36" for a Norvel w/throttle or a TD, but being cad it can be scaled back up to 60" in a second. The only change I made was to leave the sheeting off of the stab and build up the fin instead of using solid sheet. You can easily measure off the drawing to choose wood sizes. The airfoil might be a bit different, too. The original gets thinner at the tip, so I used an NACA 0018 at the root transitioning to an NACA 0014 at the tip. This looks very close to my eye. If you scale it up just use your discretion as far as structural elements such as wing center glassing, ply fuse/saddle doublers, etc.

    Oh, just PM me your email address.
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  10. #10
    8178's Avatar
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    RE: KAOS AND RELATED PLANES AND INFO

    I added more info to my post #4 above.

  11. #11

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    RE: KAOS AND RELATED PLANES AND INFO

    Excellent, another post about my favourate sports model. I have been flying the 46 sized Kaos since I bought a kit in 1979 or 80. Since then I have always had one and they have all been from the plans that can with the kit. When I crash one I work none stop until I have finished a new one(about two weeks). The last few have had the OS46LA for power which is about right for for good fun sport flying,good idle, and reliable(4Ibs 13oz). I had my first look at the ARF KAOS last year and noticed that it is larger and with a slightly thicker wing section. It seemed to fly just as well. Looks like an in between size of the original 40 and the 60 models. I have had a good copy of the 60 size plans for a few years now with the intention of building one for a OS61FX. But I am now thinking of trying the OS50 in it as I would again think that this would give me the nice light model with a good power to weight ratio with out being "over the top" with power. What do you guy's think. Matt
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  12. #12
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    RE: KAOS AND RELATED PLANES AND INFO

    Matt, those two engines are very close in the actual power output. I watched a friend swap out his OS .61FX for the .50SX and both engines flew his .60 size Spitfire very nicely. But, there was one big problem. The .50SX is about 20% lighter making the correct CG difficult to achieve. Starting from scratch, work on keeping the tail light!
    Coming soon to a grass field near you...

  13. #13

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    RE: KAOS AND RELATED PLANES AND INFO

    Thanks for the advice, starting from scratch I should be able to achieve the correct CofG with the placement of the radio. I went from an enya 45 to the OS LA in the 40 size models and by planning where the gear went in had not troubles with the light motor and the CofG. Matt

  14. #14
    8178's Avatar
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    RE: KAOS AND RELATED PLANES AND INFO


    ORIGINAL: matt13

    I had my first look at the ARF KAOS last year and noticed that it is larger and with a slightly thicker wing section. It seemed to fly just as well. Looks like an in between size of the original 40 and the 60 models. Matt
    I believe the Tower Kaos 40 ARF is modeled after the old Tower Kaos 40 kit. The Tower Kaos kit has a wingspan of 55” and wing area of 566 sq in. They made it larger than the original Bridi kit stretching it into a small 60 size aircraft. The kits I have also include the plywood frame parts used to build an Ultra Sport so apparently the Ultra Sport was based on the Kaos.

  15. #15

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    RE: KAOS AND RELATED PLANES AND INFO

    Here a photo of a Super Kaos 60 I got from a fellow flyer in Sierra Vista, Az.
    who didn’t like the way it flew. It turned out that the wing had a twist in it
    from the covering job. I straighten the wing with a heat gun, added the Wings
    MFG. canopy, installed a Super Tiger X-60 with Tiger pipe and ended up with
    one great flying plane. Lots of well spent hours locking down the novice and
    advance pattern with this plane. This kaos and I was dialed in and ready to kick
    some butt. It was lost two days before the 80/81 Tucson Winter Nats to a dead
    stick, high winds, high speed fly through of a Mesquite tree. I still have the
    canopy and it will go on my next SK-60, which I’m working on now. I still
    brought home the bacon (third place novice) from the Nats with my backup
    plane, a modified Wings Love Machine. This is one great plane to learn the ropes
    with. I’ll post some photos of the new SK-60 (and maybe SK-40) in a month or so.

    Ron
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  16. #16
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    RE: KAOS AND RELATED PLANES AND INFO

    Ron, that Wing Mfg canopy gives the plane a whole new look which I really like. It looks like it probably adds more side area over the CG, too. Beautiful planes.

  17. #17

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    RE: KAOS AND RELATED PLANES AND INFO

    Rainedav,
    That canopy does add a lot to it's looks but it needed retracts to complete
    the look. But who needed retracts to fly the lower classes back in those days?
    I can't remember this plane having any of the troubles that others talk about,
    so may the canopy did help in those areas. The fellow I got the above kaos
    from was a little P'd off when he saw how well it really flew and when I told
    him about the wing twist correction. I offered it back to him a couple of times
    but I think pride and building a Nosen 310 got in the way.
    The one I'm working on now will have retracts and a better coving job. I
    plan to use Goldberg retracts (just because I have a set) and maybe a piped
    Enya 60X. It should be a good looking plane to watch in a low high speed
    flyby with the gear up and that canopy.

    Ron

  18. #18

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    RE: KAOS AND RELATED PLANES AND INFO

    With retracts it would look very much like the Dirty Birdy!

  19. #19

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    RE: KAOS AND RELATED PLANES AND INFO

    Greetings,
    I have a fellow pilot looking for the plans to a Sterling Lancer 0.60 size.
    Sterling lost all files in the fire just before the sale to Estes.
    Anyone have a set we can get a copy from.
    Best regards,
    EXCAP232

  20. #20

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    RE: KAOS AND RELATED PLANES AND INFO

    Chaps,
    For those wondering about modern vs `old' engines I have a Super Kaos .60 with an original but new (unused) Lee special .60 (K&B/Veco) of early `70's vintage up front and to achieve balance the battery pack (JR 1100 mAh) is back about the middle of the wing, with the rest of the radio gear behind it. Keeping the tail light is not the problem with fitting `new' motors in these older designs, picking a light enough engine will be the problem. The OS LA series is one solution but I don't think that they will require any special building techniques in order to achieve balance. Of course you can fit an original engine, but those old mufflers are pretty noisy compared with the modern ones, and if you overheat or dingle the thing getting spares can be a problem. Sure sounds good when it winds up coming out of a reversal though.
    Evan.

  21. #21

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    RE: KAOS AND RELATED PLANES AND INFO

    Just picked up a super kaos .40 with Como 51 and tuned pipe as my second plane. It looks great, can't wait to get her up in the air... 1 small problem: No plans! I need to know what is a good CG location to start with???

    Thanks
    -BeeFCaKe

  22. #22
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    RE: KAOS AND RELATED PLANES AND INFO

    RCM plan for Super Kaos JR. shows the balance point 4" back from the leading edge at the wing root.

    Ray

  23. #23

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    RE: KAOS AND RELATED PLANES AND INFO


    ORIGINAL: pimmnz

    Chaps,
    For those wondering about modern vs `old' engines I have a Super Kaos .60 with an original but new (unused) Lee special .60 (K&B/Veco) of early `70's vintage up front and to achieve balance the battery pack (JR 1100 mAh) is back about the middle of the wing, with the rest of the radio gear behind it. Keeping the tail light is not the problem with fitting `new' motors in these older designs, picking a light enough engine will be the problem. The OS LA series is one solution but I don't think that they will require any special building techniques in order to achieve balance. Of course you can fit an original engine, but those old mufflers are pretty noisy compared with the modern ones, and if you overheat or dingle the thing getting spares can be a problem. Sure sounds good when it winds up coming out of a reversal though.
    Evan.

    -------------


    Just about any modern .50 - .53 will consistently turn the requisite 11x7 prop as fast, or faster, than even the Lee Custom K&B .61 PDP engine, which is nearly impossible to find these days. It will also weigh about the same weight.

    Frankly, the K&B .61 (new or used) or the HB .61, plain or PDP, new or used, is the perfect choice for these planes, unless you are out for "stupid power".

    When running a Fox .60 Eagle (baffled piston) on my Kaos 60 (original open front), I never had to worry about being nose heavy or tail heavy. It serentipitously balanced right on the mark.

    I'm not argueing with anyone. We're just shooting the bull here. <G>
    \"Practice makes prefect\"

    Saito Club Member #52

  24. #24

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    RE: KAOS AND RELATED PLANES AND INFO

    Buying a Tower Hobbies Kaos ARF. 2 questions:
    1. What's the biggest engine I can put on it without messing up the balance? I was looking at the following:

    Super Tigre 51
    Displacement: 0.51 cu in (8.3 cc)
    Bore: 0.905 in (23 mm)
    Stroke: 0.787 in (20 mm)
    Output: 1.48 hp @ 15,500 rpm
    RPM Range: 2,500-15,500
    Weight w/o muffler: 12.7 oz (363 g)
    Weight with muffler: 18.4 oz (522 g)
    Includes: muffler; glow plug
    Recommended Props: 9.5x6, 10x6

    Super Tigre 61
    Displacement: 0.61 cu in (9.95 cc)
    Bore: 0.945 in (24.0 mm)
    Stroke: 0.866 in (22.0 mm)
    RPM Range: 2,500-16,500 rpm
    Output: 1.75 hp @ 16,000 rpm/1.85 hp @ 16,500 rpm
    Weight w/o muffler: 20.0 oz (567 g)
    Weight with muffler: 26.8 oz (759 g)
    Includes: muffler; glow plug
    Recommended Props: 11x7, 11x7.5

    As you can see the 61 is considerably heavier.

    Question 2: Will standard servos work for this bird. 6.0V at 52 oz. torque?

  25. #25

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    RE: KAOS AND RELATED PLANES AND INFO

    jigeye, Go with the 51 and any standard servo. 4.8 volt should do you.
    You can go with a 11-6 prop with the 51 as well. I think you will be happy
    with that equipment setup. The man to ask is 8178 as he had/has a few
    of the Tower ARF Kaos. You can do a search for his thread on this Kaos.

    Ron


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