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5.5 gram wing loader

Old 06-18-2022, 02:06 AM
  #1  
Joseph Frost
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Default 5.5 gram wing loader

After seeing some of these indoor coaxial spinning ultra light models, at 50-60 grams AUW, I have got a new challenge on my hands, to build it as light as possible with the standard micro motor as I can't get a hand on one of those in this country. Bugger!
Few of my recent mini Bi-planes I have built were much too heavy for what I had in mind, actually bit of the handle, but a good lesson to keep the weight to minimum for "slow-low and close" outdoor flying fun.
Much better success with few mono wing ones, I have paid more attention to minimize the AUW, but still too heavy at some 8.5 grams w/load for my liking.
The latest I just finished as another experiment and a great lesson curve, I have managed to reduce the wing load to 5.5grams per decimeter square, with an

Few of my recent mini Depron creations , starting with too heavy Bi-planes.

Better success with these mono wing 3mm Depron builds.

Nice but still bit too heavy.

At to 220g AUW it comes to 8.5g/dm2 wing load, still too heavy.

My new project keeping it lighter.

Hoping to keep it under 150 grams.

Touch of colour to add on some weight, LOL.

Modification of few props while static test runs.

6mm Depron cut out wheels.

Just about ready.
AUW at 150 grams which was my target or bellow.
This model gave me a good idea to reduce the weight even further so my next target is 120 or bellow.

Last edited by Joseph Frost; 06-18-2022 at 02:10 AM.
Old 06-19-2022, 01:45 AM
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Joseph Frost
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Took it out for couple of test runs, unfortunalely too breezy to get a real picture.



Airborne!
Old 06-20-2022, 12:19 AM
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Joseph Frost
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Still didn't get a chance to fly it in dead calm, but in light breeze I have found it slightly Ail. unstable so decided to spread its wings, LOL.

Further wing extension for more stability.
Old 06-22-2022, 12:29 AM
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Joseph Frost
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Took it out again in just about dead calm, during twilight, test running GWS 8x4 prop, pretty nice, used only some 80mA out of the 300 packs in 3 min. flights.

Twilight flying.

Twilight test hoveron new 8x4.

Twilight.
Old 06-23-2022, 07:27 PM
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Joseph Frost
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Twilight footage test running GWS8x4.
(Dead Calm 150 gramer twilight test run on 8x4))
Old 06-25-2022, 12:05 AM
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Joseph Frost
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I have never expected to have so much joy flying this model; even captured a shooting star while flying this eve. LOL.

Make a wish!
Old 07-03-2022, 05:47 PM
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Joseph Frost
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Latest twilight fun.
(Dead Calm150 twilight run)
Old 08-05-2022, 01:29 AM
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Joseph Frost
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At 5.5 grams/dm it came too heavy to my expectation, despite being a nice flier, so scrapping it out and replacing the full frame with larger, lighter new design, on its way.

New frame replacement for the internal set up.

Wing load reduction with the new frame design.
Old 08-07-2022, 11:36 PM
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Joseph Frost
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After further check my new flying surface area will be 37dm, 12dm larger than replacemet so the wing load will be reduced from 5.5 to ~3.6, making it much slower, as my main target for slow-low and close.

Ready for carbonizing.

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