Use Std Ultracote or Ultracote Parklite for 2X4 Glider?
I'm building a small sailplane for my grandaughter.
49 1/2" wingspan, probably 4 channels (rudder, elevator & 2 channels for aileron diff) W/Hitec 05S micro RX & HS-55 servos. I am going to use 1 micro servo in each wingtip for aileron differential & whatever size Nmh battery pack in the nose that will balance it out.
I am considering using Ultracote Parklite for covering to keep weight down. It's spec'ed @ 28oz W/1983 era radio equipment (2 servos). The author quoted 10oz for his radio equipment.
Is the weight savings of the Ultracoat Parklite worth the diminished durability? A roll of standard Ultarcote wieghs about 3.6oz while the roll of Parklite weighs about .5 oz. Since I will use almost all of the roll on the plane, I can save nearly 3oz AUW by using the Parklite.
I figure that I can save about 8oz total W/the lighter batteries/radio equipment & covering.
Info gathereed from HH website:
True red standard ultracoat = 0.30 oz/sq.ft.
True red parklite ultracoat = 1.07 oz/sq. YD (this equates to .119 oz/sq.ft.)
Based on using the whole roll, no waste (78"x23" or 12.458 sq. ft.) toal weights would be..
standard: 3.737 oz of material
parklite: 1.483 oz of material
savings would be 2.254 oz per roll
IMO since you are using standard equipment and it is for a child, I would use standard ultracoat for durability. That being said the thickness of the materials are different however I could not find data on standard ultracoat.
standard: Not listed?
parklite: 13 microns thickness
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