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Here’s a simple, reliable, payload release, which is suitable for releasing lightweight external stores, parachutists, streamers and other fun payloads from RC planes. All it takes is a bit of scrap lite ply, some left over hardwood stock, and a few odd hardware bits. Depending on the spring you use the complete payload release (without fairings) will be about 1 1/2” long and weigh only a few grams.

You'll need:
3 x 1/2” lengths of 1/4” square wood (spruce or bass)
1/8” x 1/2” lite ply, approx. 1.5” long
.051” music wire (approx. 2” long)
3/32” diameter washer; solder the washer approx. 5/16” from one end of the wire
Spring from a ballpoint pen, etc.
Thin music wire (i.e. under .032”)


Please Be Safe!
• Remove the prop from an electric model before adjusting its servo throws and directions.

• Don’t drop anything you aren’t willing to have hit you on the head without a helmet!

• Always have a spotter to make sure the target area is clear before you drop, and to watch where the payload lands. Don’t try to watch it yourself or else your model may ‘drop’ in next to it!

• Don’t be a slob. If you drop and chop a streamer, clean up as much of it as you can find.

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