5.5 gram wing loader
06-18-2022, 02:06 AM
#1
Thread Starter
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,563
Likes: 0
Received 71 Likes
on
67 Posts
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.
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.
06-20-2022, 12:19 AM
#3
Thread Starter
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,563
Likes: 0
Received 71 Likes
on
67 Posts
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.
Further wing extension for more stability.
06-22-2022, 12:29 AM
#4
Thread Starter
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,563
Likes: 0
Received 71 Likes
on
67 Posts
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.
Twilight flying.
Twilight test hoveron new 8x4.
Twilight.
08-05-2022, 01:29 AM
#8
Thread Starter
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,563
Likes: 0
Received 71 Likes
on
67 Posts
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.
New frame replacement for the internal set up.
Wing load reduction with the new frame design.
08-07-2022, 11:36 PM
#9
Thread Starter
Join Date: Nov 2010
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 1,563
Likes: 0
Received 71 Likes
on
67 Posts
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.
Ready for carbonizing.
