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Jolly Logic Chute Release


  • Model: JL CR
  • Manufactured by: Jolly Logic

The new Jolly Logic Chute Release wraps around the rocket parachute and holds it closed with an elastic band until it the rocket descends to a chosen altitude. Then, using an electronic servo, it releases the band and allows the parachute to open. This allows simple motor-eject rockets to reduce the distance that the rocket drifts while on parachute, which is especially important for high flights, windy days and small fields. YOU control when your parachute opens!

  • Holds your parachute closed until your rocket descends to an altitiude you choose

  • Reduces the distance your rocket drifts while on parachute

  • Fits in model rockets as small as 38mm in diameter, if packed carefully

  • For flights to any altitude over 200 feet (60 meters)

  • Rechargeable from any USB port (cable included)

Chute Release Box


Dimensions: 54 x 31 x 10 mm (2.1 x 1.2 x 0.4 in)
Weight: 17.5 g (0.6 oz)
Altitude: For flights higher than 200 feet
Release altitudes: 100, 200, 300, 400, 500, 600, 700, 800, 1000 feet (30, 60, 90, 120, 150, 180, 210, 240, 300 meters)

Rocket requirements: Motor-ejection, and sufficient space for Chute Release and parachute
Battery: Recharges in any USB port
User guide: view here

Will it fit in my rocket?

We will learn more about specific rockets as we go, but as a rule of thumb the answer is generally “YES” if the rocket is greater than 40mm in diameter and long enough so that the parachute isn’t already tightly packed, “IT DEPENDS” for 38-40mm, and “NO” for less than 38mm.

Your parachute is ejected at the top of your flight as usual by your motor’s ejection charge, but Chute Release holds your parachute closed until your rocket falls to the altitude that you chose as the release altitude.

Here is a video from Jolly Logic showing you how to set the release altitude on Chute Release, and perform an easy ground test:

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