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RX-250-LPN Model Rocket Kit (24mm)
The RX-250-LPN is an Indonesian sounding rocket. The RX series of rockets was first developed in the mid 1980’s. The RX-250-LPN was designed to lift scientific instruments to an altitude of 70 km and was flown between the years of 1987 and 2007.
This new scale kit is nearly two and a half feet tall and features a balsa nose cone, laser-cut basswood fins, water-slide decals and quick-change engine hook. Designed primarily for 24mm C, D & E engines, it can also be flown on selected 18mm engines with an adapter (not included). A bright metallic parachute returns it to the ground for flight after flight.
Length: 27.75"/70.5 cm
Diameter: 1.326”/33.7 mm
Weight: 3.5 oz/99 gm
18" Parachute Recovery
Scale: approx. 1/7.42 (0.135)
Skill Level: Intermediate
Requires 3/16" Launch Rod
Center of Pressure: 23.3" from tip of nose
Recommended Engines: C11-5; D12-7; D22-7; E15-7; E20-7; F44-8; with an 18/24 Adapter (not included): B4-2; B6-2; C6-3; C12-6; C18-6; D16-6; D20-6
What you'll need to build this model:
Adhesives (Wood glue, such as Elmer’s Carpenters Glue, can be used throughout and is recommended for most construction. Other adhesives [epoxy, Cyanoacrylate aka "CA", etc.] may be used if you are familiar with their use and prefer them.); Hobby Knife with sharp #11 Blade; Ruler; Pencil; Masking Tape; Sandpapers (Medium - 180 or 220, Fine 320 or 400, & [optionally] Extra-Fine - 500 or 600); Sanding Sealer (or other balsa filler coat); Thinner (appropriate for the type of sanding sealer used); Small Paint Brush (to apply sealer); Spray Paint (such as Rust-Oleum, Krylon, or Testors is recommended. Be sure not to mix different types or brands of paint without testing.) - primer (optional), white, red, & clear (optional).
Recommended, but not required: Metal Angle or other tube marking tool; Sanding Block; Tack Cloth.
Optional: Material to fill body tube seams and/or any imperfections in wood parts, such as Elmer’s Carpenters Wood Filler, Interior Spackling Paste, etc.; decal setting or solvent solution (such as Micro-Set or Micro-Sol).
What else you'll need to fly this model:
Electronic launch system; launch pad with 3/16" launch rod; recovery wadding; engines (see list of recommended engines above).