Tethys Rocket

Tethys Rocket

Regular price $148.95

The Tethys is a rugged rocket that you can fly on high impulse G through J motors.

The perfect first large-diameter bird at 3.9" diameter. Easy to build, with advanced features like a Kwik-Switch 2000 motor mount and multi-panel parachute. This 53-inch tall beauty flies on high-impulse G through J motors.
• Pre-slotted Quantum Tube airframe
• Dura-Chute nylon parachute
• Plastic nosecone
• Kwik-Switch interchangeable motor mount
• Piston ejection system
• G-10 fins
• Linear Rail Lugs for 10/10 launch rails

Click here for the complete Data Sheet

Click here for the kit instructions


Diameter: 3.9" | Height: 53" | MMT: 54/38/29mm Kwik-Switch
Parachute: 48" | Payload: None
Fin Array: 3 | Fin Thickness: 0.09"

The TETHYS is a robust and versatile kit for Level 1 and 2 flights. This rocket stands 53" tall, is 3.9" in diameter and has a 3 fin design. This rocket comes standard with a 54/38/29mm Kwik-Switch motor mount and can fly on H thru J motors. At ~62 oz., the 48" parachute is sized right for the stock kit to make a safe landing under most field conditions. This kit comes standard with our exclusive Linear Rail Lugs for use with 80/20 brand launch rails. The stock airframe is ideal for flights up to approx. 0.85 Mach.

Below you will find a number of upgrade options. Upgrading the parachute size may be necessary if you intend to build heavy or have a hard landing surface (i.e. gravel, pavement, desert playa, etc.). Some motors will accelerate this rocket to transonic or even supersonic velocities. Under these conditions, this kit may require the fin upgrade, foam encapsulation of the fin root, as well as other advanced construction skills.

  • Tethys Parachute Upgrade (For Hard Surface Landings) from 48 to 54 - $10.00
  • Tethys Upgrade, Add HAMR-KS Motor Retainer now and Save 15% - $39.90
  • Substitute Phenolic Airframe (for DIY fiberglassing only; see Complete FAQ) - $8.00
  • Upgrade to Pre-Glassed Phenolic Airframe for Tethys - $79.00

Add now and save:

  • Epoxy, Quick-Cure (5 min) - $16.99 (Normally $18.99)
  • Epoxy, Mid-Cure (15 min) - $16.99 (Normally $18.99)
  • Epoxy, Slow-Cure (30 min) - $16.99 (Normally $18.99)
  • Adjustable Density Expanding Foam - $16.99 (Normally $18.99)

Motor Recommendations | More Specifications

It is prudent to sim your kit/motor combination using the actual weight of your finished model to determine max velocity, altitude, ejection delay, etc. This will allow you to make an informed decision when selecting a suitable motor for your rocket. Please download and read the PML FAQ and/or consult with a NAR or Tripoli certified member to ensure your flights are fun and safe.



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