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Old Mar 05, 2013, 05:58 PM
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Don Stackhouse's Avatar
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I fly mine with an old Futaba gold-case Tx, with the motor on the throttle stick and the spoilers on the 5th channel, the retract switch (yes, that means spoilers are either open or closed). For sport flying that works quite well. If I was using it for competition, with timed climbs and no use of partial throttle (or any use of power after the initial launch), and precision landing tasks, I would probably run the motor on the retract switch and put the spoilers on the throttle.

Even then, for initial flights, where the plane is not necessarily trimmed out yet, I would set up the motor on the throttle stick so I could make those first few launches with partial throttle. Once the plane was trimmed out, and I knew how it would respond to full throttle, I would then switch things for the competition setup.
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Old Mar 08, 2013, 05:55 AM
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United States, OH, Galena
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My 3-piece wing Chrysalis is ready for its maiden flight, hopefully today.
The spoilers haven't been installed yet, although the servos are in place.
The wings are covered in tissue over Doculam, stuck with Polycrylic water-based polyurethane varnish. The tail feathers are tissue + Polycrylic. The fuselage is black silk with Polycrylic. Flying weight is 37 ounces with the Eflite 480 motor, 12x6 Graupner CAM folding prop, Castle Thunderbird 36 ESC, Glacier 3S 2200mAh Lipo battery, Hitec HS-80MG and HS-50 servos and FrSky D8R-II Plus telemetry receiver.
The coat of arms on the left wing is that of Normandy.
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Old Mar 08, 2013, 01:21 PM
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United States, MI, Lansing
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blackfoot,
is the silk just a preference for you or do you feel like its easier than film?
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Old Mar 08, 2013, 02:31 PM
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He put tissue over film on the wings.

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Old Mar 08, 2013, 02:31 PM
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He put tissue over film on the wings.

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Old Mar 08, 2013, 03:16 PM
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why would you put tissue over film? is the film like monokote?
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Old Mar 08, 2013, 04:43 PM
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United States, MI, Hastings Charter Township
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This is a common freeflight technique. The mylar is typically a clear mylar in the 1/2mil to 2mil range. The combination of mylar and doped tissue weighs around 30g/sq. meter. Monokote is around 62g/square meter. The tissue also adds a lot of strength to the mylar. So the weight savings can be quite significant.
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Old Mar 08, 2013, 05:24 PM
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United States, OH, Bradford
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But the weight savings on this airplane is not as important as the stiffness you are sacrificing.

I do plan to try your stiffness test on an Ultracoated wing, as soon as I can find the time. My day job has me pretty swamped at the moment.
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Old Mar 08, 2013, 06:22 PM
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Columbus, OH
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Quote:
Originally Posted by jnmardister View Post
why would you put tissue over film? is the film like monokote?
It gives a plane an imitation silk appearance. Very pretty.
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Old Mar 09, 2013, 12:50 AM
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Quote:
Originally Posted by jnmardister View Post
blackfoot,
is the silk just a preference for you or do you feel like its easier than film?
Well, I already did have the silk anyway, but more to the point is that I find it greatly reinforces the balsa wood, looks very nice and last but not least, it FEELS so nice when stroked like a pet cat no film can match that
Maiden flight was great, I first tried a test glide from shoulder height, it went straight so I gave it 1/3 power and let it climb a hundred feet. It only required three clicks of down and two of right. Then I tried full power, it almost can climb vertically, but not quite. A 50°to 60° climb seems best (Did I read in Martin Simmons' book "Aerodynamics for Model Aircraft" that the highest climb rate is at a 54° angle?) and requires a fair bit of down elevator to maintain the angle. I really like the way this machine flies and looks, and will fit the spoilers as soon as a rainy days comes along - it is not so easy to land it without, it keeps on gliding and gliding...Also tried a few fast dives and could not detect any sign of flutter.
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Old Mar 09, 2013, 12:53 AM
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Quote:
Originally Posted by Trisquire View Post
It gives a plane an imitation silk appearance. Very pretty.
Hi Trisquire, you are so right
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Old Mar 09, 2013, 03:17 AM
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United States, OH, Galena
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Inside Chrysalis.
There is room for even a 2600 mAh 3S Lipo. Because it is 1 oz heavier than the 2200 mAh, it is positioned about 3/4" further back to keep the CG in the same place.
I was so happy flying the Chrysalis yesterday that I pretty well drained the 2600 mAh battery down.
Surprise when I recharged it: it took 2560 mAh
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Old Mar 09, 2013, 07:34 AM
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SE Minnesota
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servo fastening

How did you fasten your servos? Also, did you tin the ends of the control cables with solder? I'm about ready for that step.
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Old Mar 09, 2013, 07:49 AM
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Quote:
Originally Posted by JOHNNYDXYZ View Post
How did you fasten your servos?.
Exactly as shown in the instruction sheet, two 1" squares of 3/32 balsa glued together + servo tape.
Quote:
Also, did you tin the ends of the control cables with solder? I'm about ready for that step.
I did tin the ends with silver solder (Novak Electronics brand) I got from my LHS, as advised by the designer.
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Old Mar 09, 2013, 09:31 AM
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United States, OH, Bradford
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Congrats on the maiden flights!

I'm glad your covering seems to be doing the job. I still plan to duplicate your torsion test, for a reference point. My experience with the stiffness fiber-based coverings has been poor. Both Micafilm and Coverite (which is quite a bit heavier than Monokote or Ultracoat / Oracover) turned out to be surprisingly "soft". Yours seems to be "the exception to the rule."
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