Pratt Hobbies, Inc.
Rocketry Catalog
Model Rocket Kits for Classes and Groups
Launch Systems and Accessories

Fuel grain for RATT Works L500 hybrid motor. Includes special fill tubing, preheater grain and igniter.

Fuel grain, fill tube, preheater grain and igniter for RATT Works M900 hybrid motor.

The Micro Jayhawk from Aerospace Specialty Products is a detailed scale model of the Jayhawk target drone for Quest MicroMaxx motors.

The Micro WAC Corporal from Aerospace Specialty Products is a detailed scale model for Quest MicroMaxx motors. Includes all detail parts and water-slide decals.

The Micro Sandhawk from Aerospace Specialty Products is a detailed scale model of the Sandia Sandhawk sounding rocket for Quest MicroMaxx motors. Includes all detail parts and water-slide decals.

The Micro Corporal from Aerospace Specialty Products is a detailed scale model. Includes all detail parts and water-slide decals. Quest MicroMaxx launch system is required.

The Micro RP-3 from Aerospace Specialty Products is a detailed scale model. Includes all detail parts and water-slide decals. Quest MicroMaxx launch system is required.

For people who want to build their own fill system, the BFV Oversize Fill Valve has twice the flow capacity of the "standard" fill valve. It draws 2.9 amps of current and does not require "solenoid saver" circuitry.

For do-it-yourselfers, our Standard Solenoid Valve is your best choice for hybrid motor fill systems.

Reload kit for the RATT Works K240 hybrid motor. The kit consists of the fuel grain with graphite nozzle, preheater, and igniter.

RATT Works I80 hybrid motor casing set. Includes end closures, casing and injector. 29mm diameter, 29 inches long.

The Econo Valve is a less expensive option for building your own hybrid GSE. It should be used ONLY for smaller (G-H) motors.

The Micro Sonda IIB from Aerospace Specialty Products is a detailed scale model of the Sonda sounding rocket for Quest MicroMaxx motors. Includes all detail parts and water-slide decals.

If you need more fill hose to connect to your hybrid motor, this 5-foot extension kit will do the job. One end connects to the Module 2 Valve Manifold or similar fill system with 1/8 NPT female connector. The other end accepts the different sized push-to-connect connectors supplied with the ULS-M2 to fit different fill hoses.

Contrail 54mm 36 inch long hybrid motor hardware set, with one nozzle speed. Select the nozzle speed required by the load you want to fire when you order the hardware set.

Contrail 54mm Motor Hardware with 48 inch length casing. Select Slow, Medium or X-Fast nozzle, and single port or three-port (X-Fast) injector.

Complete set of all 54mm components. Includes three casings, three nozzles, two injectors, all hardware.

One J245 reload for Contrail 54mm hybrid motor. Includes injector orifice, fill line, igniter. Requires 28 in. 54mm casing with Slow nozzle and single port injector.

Updated version of our popular CanSat kit! Thekit contains everything needed to build and program a CanSat. The kit includes a set of sensors, a telemetry transmitter, and a computer to perform atmospheric measurements. The kit is modular so it can be customized and expanded. Version 2.0 includes more connectors for features like controlling servos, and two additional sensor ports.

Rocket Glue is the very best glue we've ever found for building model rockets in classrooms. Non-toxic and harmless, works on plastic, and fast grab. Available in 1 ounce bottles, three-packs of small bottles, and 4-ounce refills.

3-pack of 1 oz bottles of Rocket Glue, easier to share in a classroom rocket building session.

Rocket Glue is the very best glue we've ever found for building model rockets in classrooms. Non-toxic and harmless, works on plastic, and fast grab. Available in 1 ounce bottles, three-packs of small bottles, and 4-ounce refills.

If you are building your own CANSAT, or you would like to use the materials in the CANSAT kit as a backbone for your electronic payload, we can offer you the CANSAT hardware separately.

Test your igniters and ejection charges before launch to make sure they'll work! The Pocket Igniter Tester sounds a tone when it detects a complete circuit. Safe for use with low-current igniters (electric matches). Battery not included.

300cc HyperTEK motor system, includes one Standard fuel grain and all parts.

The HyperTEK J Motor Set comes with a stainless steel-faced injector bell, 440cc tank, two Standard fuel grains, one FX fuel grain, four orifices, and all needed parts.

KRYTOX grease is specified for most hybrid motors, for lubricating o-rings and any components that come in contact with the oxidizer. KRYTOX will not react with liquid nitrous oxide, unlike conventional hydrocarbon greases. Not for use on HyperTEK FX fuel grains.

6 gram Silicone Grease syringe for hybrid motors. Safe to use on HyperTEK FX fuel grains, where Krytox is not recommended. Also safe for all other hybrid motors.

The Pressure Gauge is available separately or as an upgrade to the ULS-M2 Valve Manifold. Tee-fitting with 1/4NPT threads included.

This Contrail motor hardware set is certified for L369, L800, L1222, L1428, L2525, M711, M1491 and M2281 loads. The 3200cc tank is included: select a nozzle and combustion chamber for the reload kit you want to use. Select the Slow nozzle and Medium combustion chamber for the L369 and M711; the Medium nozzle and Medium combustion chamber for the M800, L1222, and M1491; and the Fast nozzle and Long combustion chamber for the L1428, L2525, and M2281.

One fuel grain and parts for the CR-75-3200 Contrail motor casing set with Fast nozzle and Long combustion chamber. Tripoli certified as M2281. Fast Black Smoke fuel composition.

The Contrail Complete Motor System contains all parts necessary to use all Contrail Rockets certified 75mm reload kits.

Contrail Rockets 75mm 2050cc Oxidizer Tank Assembly. Includes sealed tank, five-port injector, and flush-mounting bolts.

Contrail Rockets 75mm 1400cc Oxidizer Tank Assembly. Includes sealed tank, five-port injector, and flush-mounting bolts.

Contrail Rockets MINI (7.875 in.) Combustion Chamber. Fits Contrail 75mm hardware.

This Hardware Set contains all parts needed for the Contrail 16 inch 38mm motor. Select a Slow, Medium or Fast nozzle depending on the reload you want to use.

This Hardware Set contains all parts needed for the Contrail 20 inch 38mm motor. Select a Slow, Medium or Fast nozzle depending on the reload you want to use.

This Hardware Set contains all parts needed for the Contrail 28 inch 38mm motor. Select a Slow, Medium, or Fast/X-Fast nozzle depending on the reload you want to use.

This Hardware Set contains all parts needed for the Contrail 36 inch 38mm motor. Select a nozzle speed depending on the reload you want to use

This Hardware Set contains all parts needed for the Contrail 48 inch 38mm motor. Select a nozzle speed depending on the reload you want to use.