quorneng
Master member
Nearly 2 years ago I decided to see if I could build a Sea Gull out of Depron rather than use 3D printing as Plane Print have done.
To my mind the videos of the Plane Print one fly rather fast resulting from their weight and the power required indeed many have found it necessary to fitted a bigger fan.
My objective was to make full use of thin 2mm sheet Deron and keep below 250g. To help with this I decided to make mine just a bit smaller than the Plane Print one and use a 35mm EDF with a 450mAh 3s. The general shape followed the Plane Print design.
With a span of 48" (1220 mm) and an all up weight of 196g it was always going to be a slow flyer.
I did not built it as a flying wing but hoped the very close coupled and modest tail surfaces would be just sufficient.
It is flown AET with no rudder.
The initial flights rather confirmed my fears making it a real handful to fly so it spent a some time just "hanging on the wall".
We have had some truly calm days over the last couple of months, apart from storm Amey!
After a small CG adjustment I found to my delight that if flown slowly at reduced power it actually flies rather well. A flight of just over 12 minutes from the tiny battery rather demonstrates the aerodynamic efficiency of the airframe and the improved g/W thrust of the small EDF when well throttled back.
I have just replaced the micro video recorder for my "hat cam" so despite some problems today I recorded a 4 minute flight. It is best viewed in full screen mode.
The very grey misty conditions were not kind to the camera colour contrast but it does give an idea of how it looks flying.
It even included some modest aerobatics!
To my mind the videos of the Plane Print one fly rather fast resulting from their weight and the power required indeed many have found it necessary to fitted a bigger fan.
My objective was to make full use of thin 2mm sheet Deron and keep below 250g. To help with this I decided to make mine just a bit smaller than the Plane Print one and use a 35mm EDF with a 450mAh 3s. The general shape followed the Plane Print design.
With a span of 48" (1220 mm) and an all up weight of 196g it was always going to be a slow flyer.
I did not built it as a flying wing but hoped the very close coupled and modest tail surfaces would be just sufficient.
It is flown AET with no rudder.
The initial flights rather confirmed my fears making it a real handful to fly so it spent a some time just "hanging on the wall".
We have had some truly calm days over the last couple of months, apart from storm Amey!
After a small CG adjustment I found to my delight that if flown slowly at reduced power it actually flies rather well. A flight of just over 12 minutes from the tiny battery rather demonstrates the aerodynamic efficiency of the airframe and the improved g/W thrust of the small EDF when well throttled back.
I have just replaced the micro video recorder for my "hat cam" so despite some problems today I recorded a 4 minute flight. It is best viewed in full screen mode.
It even included some modest aerobatics!
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