Canadian Rocket Store


Little John 4" Scale High-Power Rocket Kit [K-3142]


Little John 4\" Scale High-Power Rocket Kit

In Stock. Ships Mar 25

Skill Level: 2

The 4" Little John by Madcow rocketry is a great first high-power rocket, both because of its ease of assembly, and good performance on a variety of motors. It is light enough to fly with 29mm motors. This 38 mm kit with featuring pre-slotted body tube, heavy-duty plastic nose cone, laser-cut 1/4" plywood fins, 38mm cardboard MMT, 1/4" plywood centering rings, 12-foot tubular nylon shock cord, eye bolts and washers, vinyl decals and Delrin rail buttons. All tubes are heavy-duty cardboard.

  • Length: 47.5"
  • Diameter: 4"
  • Weight: 39 oz.
  • Motor Mount: 38 mm.
  • Recommended motors: H - I
  • Recovery System: Parachute Not Provided (42" recommended)
  • CG: 32" from the nose tip.

This is a high-power kit.
You need to adjust CG, pick the parachute and retainer, therefore we suggest this kit for people with previous rocket building experience. Epoxy can cause an allergic reaction in some people. Adult supervision and wearing rubber gloves is recommended when working with epoxy.

This kit does not include an engine retention system. It is up to the builder to provide for motor retention. We recommend the 38mm diameter Aero Pack Engine Retainers (38P). They also give any rocket an extra professional-looking appearance.

 Assembly Instructions

  • Manufactured by: Madcow Rocketry