Focus ARF
Component weights
The weights shown below in the blue box are ACTUALS --
Component | Wt, grams | Ready to Fly | |
Wing, Right | 466 | 378 | lightening holes |
Wing, Left | 485 | 397 | lightening holes |
Elev/stab | 173 | 159 | lightening holes |
belly pan | 71 | 71 | |
pushrod | 20 | 20 | |
canopy untrimmed | 116 | 95 | trimmed |
Wing Tube | 121 | 61 | Carbon wing tube |
Rudder / Fin | 87 | 79 | lightening holes |
Motor Box & parts | 105 | ||
Wheel Pant | 66 | 0 | left them off |
Cowl | 169 | 169 | |
L/G and hardware | 169 | 134 | carbon L/G |
hardware pack | 44 | ||
Wheels etc | 90 | ||
Pushrods | 58 | Airframe Totals | |
Fuse | 803 | 773 | Grams |
Total savings | 270 | 3043 |
The weights shown below here are projections / estimates.
Running Total | ||||
ounces | grams | Grams | Pounds | |
Engine - 140RX | 30 | 850.5 | 3893.5 | 8.6 |
Motor Mount | 5 | 141.8 | 4035.3 | 8.9 |
Servos x 4@ 1.75 | 7 | 198.5 | 4233.7 | 9.3 |
Throttle Servo | 1.3 | 36.9 | 4270.6 | 9.4 |
Spinner | 3 | 85.1 | 4355.6 | 9.6 |
Prop | 5 | 141.8 | 4497.4 | 9.9 |
Battery | 6 | 170.1 | 4667.5 | 10.3 |
Rcvr & Padding | 3 | 85.1 | 4752.5 | 10.5 |
Tank and Plumbing | 7 | 198.5 | 4951.0 | 10.9 |
Header and Pipe | 7 | 198.5 | 5149.4 | 11.3 |
Pics of the lightened surfaces that (along with carbon wing tube and landing gear among other mods), helped get the beast down to a Nats weight of 10.65 lbs: I did the holes by drawing them w/ a paper template on the wing top anc bottom then used an X-Acto knife to cut / remove material from the holes.
As of December the plane has more than 150 flights on it and no sign that the airframe was weakened by all this. And btw, it hit the ground on June 8 '03 (Flight 5) and destroyed the nose, but the wings weren't hurt at all even though it hit a wingtip pretty hard.
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