Pratt Hobbies, Inc.
Rocketry Catalog
 Innovative Launch Systems and Accessories
for Model Hobbyists
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Contrail Rockets 1400cc Hardware Set

Details 

This Contrail motor hardware set is certified for K456, K543, K630, and K707 loads. The anodized aluminum casing set fits 75mm motor mounts; no external vent is necessary. You must select a Slow nozzle, and a Mini combustion chamber for the K543 and K456 loads, and a Medium nozzle and Mini combustion chamber for K630 and K707 loads.
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Price: $450.00
Out of Stock

A6-4 Motors, 25-pack

Details 

Bulk pack of 25 Quest A6-4 rocket motors with igniters.

NOTE: Model rocket motors must be shipped separately. Please either plan for more time for a ground shipment via US Mail, or request faster (more expensive) delivery.

List Price: $73.00
Price: $59.00
Out of Stock

Contrail Rockets 75mm Slow Nozzle

Details 

Contrail Rockets SLOW Nozzle. Fits all 75mm Contrail Rockets combustion chambers. Includes graphite insert and hex flush mounting bolts.
Price: $100.00
Out of Stock

Contrail Rockets 75mm Medium Nozzle

Details 

Contrail Rockets MEDIUM Nozzle. Fits all 75mm Contrail Rockets combustion chambers. Includes graphite insert and hex flush mounting bolts.
Price: $115.00
Out of Stock

Contrail Rockets 75mm Fast Nozzle

Details 

Contrail Rockets FAST Nozzle. Fits all 75mm Contrail Rockets combustion chambers. Includes graphite insert and hex flush mounting bolts.
Price: $140.00
Out of Stock

Contrail Rockets M1491 Reload Kit

Details 

One fuel grain and parts for the CR-75-3200 Contrail motor casing set with Medium nozzle and Medium combustion chamber. Tripoli certified as M1491. Black fuel composition.
Price: $95.00
Out of Stock

Contrail Rockets L1428 Reload Kit

Details 

One fuel grain and parts for the CR-75-3200 Contrail motor casing set with Fast nozzle and Long combustion chamber. Tripoli certified as L1428. Sparky fuel composition.
Price: $130.00
Out of Stock

Contrail Rockets K888 Reload Kit

Details 

One fuel grain and parts for the CR-75-2050 Contrail motor casing set with Medium nozzle and Short combustion chamber. Tripoli certified as K888. Black fuel composition.
List Price: $130.00
Price: $85.00
Out of Stock

Contrail Rockets 75mm Medium Combustion Chamber

Details 

Contrail Rockets MEDIUM (11.875 in.) Combustion Chamber. Fits 75mm Tank Assemblies and Nozzles.
Price: $135.00
Out of Stock

Contrail Rockets 2050cc Hardware Set

Details 

This Contrail motor hardware set is certified for K888, K777, K678, K404 and K300 loads. The anodized aluminum casing set fits 75mm motor mounts; no external vent is necessary. You must select a Slow nozzle and a Short combustion chamber for the K300 and K404 loads, and a Medium nozzle and Short combustion chamber for K678, K777 and K888 loads.
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Price: $475.00
Out of Stock

Contrail Rockets 75mm Short Combustion Chamber

Details 

Contrail Rockets SHORT (9.875 in.) Combustion Chamber. Fits Contrail 75mm Nozzles and Tank Assemblies.
Price: $100.00
Out of Stock

Contrail Rockets M711 Reload Kit

Details 

One fuel grain and parts for the CR-75-3200 Contrail motor casing set with Slow nozzle and Standard combustion chamber. Tripoli certified as M711. Black fuel composition.
Price: $95.00
Out of Stock

Contrail Rockets L2525 Reload Kit

Details 

One fuel grain and parts for the CR-75-3200 Contrail motor casing set with Fast nozzle and Long combustion chamber. Tripoli certified as L2525. Black Gold fuel composition.
Price: $130.00
Out of Stock

Contrail Rockets L1222 Reload Kit

Details 

One fuel grain and parts for the CR-75-3200 Contrail motor casing set with Medium nozzle and Medium combustion chamber. Tripoli certified as L1222. Sparky fuel composition.
Price: $95.00
Out of Stock

Contrail Rockets H277 3-Pack Reload Kit

Details 

Three-pack of H277 reloads for the Contrail Rockets 38mm motor system. Requires 28 inch casing and Fast nozzle.
Price: $60.00
Out of Stock

Contrail Rockets H300 3-Pack Reload Kit

Details 

Three-pack of H300 reloads for the Contrail Rockets 38mm motor system. Requires 20 inch casing and Fast nozzle.
Price: $60.00
Out of Stock

Contrail Rockets H121 3-Pack Reload Kit

Details 

Three-pack of H121 reloads for the Contrail Rockets 38mm motor system. Requires 20 inch casing and Slow nozzle.
Price: $60.00
Out of Stock

Sky Ripper 29mm 3-Motor Casing Set

Details 

The Sky Ripper 29mm G-H Casing Set includes three casings, nozzle, injector, end closure and hardware.
Price: $115.00
Out of Stock

KRYTOX grease for hybrid motors

Details 

KRYTOX grease is specified for most hybrid motors, for lubricating o-rings and any components that come in contact with the oxidizer. Will not react with liquid nitrous oxide. 0.5 ounce tube.
Price: $25.00

Contrail Rockets K543 Reload Kit

Details 

One fuel grain and parts for the CR-75-1450 Contrail motor casing set with Slow nozzle and Mini combustion chamber. Tripoli certified as K543. Black fuel composition.
List Price: $95.00
Price: $75.00
Out of Stock

Contrail 38mm 48 inch Motor System

Details 

The Contrail Rockets 48 inch 38mm Motor System includes all three nozzles.
Price: $210.00
Out of Stock

Contrail Rockets G300 3-Pack Reload Kit

Details 

Three-pack of H248 reloads for the Contrail 38mm motor system. Requires 16 inch casing and Fast nozzle.
Price: $50.00
Out of Stock

Contrail Rockets G234 3-Pack Reload Kit

Details 

Three-pack of G234 reloads for Contrail 38mm motor system. Requires 28 inch casing and Fast nozzle.
Price: $60.00
Out of Stock

Contrail Rockets J800 3-Pack Reload Kit

Details 

Three-pack of J800 reloads for the Contrail 38mm motor system. Requires 48 inch casing and XXF Upgrade Kit.
Price: $80.00
Out of Stock

Contrail Rockets J345 3-Pack Reload Kit

Details 

Three-pack of J345 reloads for Contrail 38mm hybrid motor system. Requires 48 inch casing and Fast nozzle.
Price: $50.00
Out of Stock

Contrail Rockets J246 3-Pack Reload Kit

Details 

Three-pack of J246 reloads for the Contrail 38mm motor system. Requires 36 inch casing and Medium nozzle.
Price: $60.00
Out of Stock

Contrail Rockets J222 3-Pack Reload Kit

Details 

Three-pack of J222 loads for Contrail 38mm hybrid motor. Requires 48 inch casing and Medium nozzle.
Price: $60.00
Out of Stock

Contrail Rockets J150 3-Pack Reload Kit

Details 

Three-pack of J150 loads for the Contrail Rockets 38mm hybrid motor system. Requires 36 inch motor casing and Slow nozzle.
Price: $60.00
Out of Stock

Contrail Rockets 75mm Long Combustion Chamber

Details 

Contrail Rockets LONG (17.875 in.) Combustion Chamber. Fits 75mm Tank Assemblies and Nozzles.
Price: $145.00
Out of Stock

Contrail Rockets G300 3-Pack Reload Kit

Details 

Three-pack of G300 reloads for the Contrail 38mm motor system. Requires 16 inch casing and Fast nozzle.
Price: $45.00
Out of Stock

Robot Arm Kit

Details 

The robotic arm is a simple kit with three metal geared servos and acrylic components. The robotic arm includes an Arduino compatible processor board and three potentiometers to control the servos.  No soldering required.  Requires 9V battery.
Price: $79.00

Contrail Rockets J555 3-Pack Reload Kit

Details 

Three-pack of J555 reloads for the Contrail Rockets 38mm motor system. Requires 48 inch casing and Fast nozzle.
Price: $70.00
Out of Stock

Contrail Rockets J333 3-Pack Reload Kit

Details 

Three-pack of J333 reloads for the Contrail Rockets 38mm motor system. Requires 48 inch casing and Fast nozzle.
Price: $60.00
Out of Stock

Contrail Rockets J242 3-Pack Reload Kit

Details 

Three-pack of J242 reloads for the Contrail Rockets 38mm motor system. Requires 48 inch casing and Medium nozzle.
Price: $45.00
Out of Stock

Contrail Rockets I307 3-Pack Reload Kit

Details 

Three-pack of I307 reloads for the Contrail Rockets 38mm motor system. Requires 36 inch casing and Fast nozzle.
Price: $60.00
Out of Stock

Contrail Rockets I210 3-Pack Reload Kit

Details 

Three-pack of I210 reloads for the Contrail Rockets 38mm motor system. Requires 36 inch casing and Medium nozzle.
Price: $45.00
Out of Stock

Contrail Rockets I500 3-Pack Reload Kit

Details 

Three-pack of I500 reloads for the Contrail Rockets 38mm motor system. Requires 28 inch casing and Fast nozzle.
Price: $70.00
Out of Stock

Contrail Rockets I221 3-Pack Reload Kit

Details 

Three-pack of I221 reloads for the Contrail Rockets 38mm motor system. Requires 28 inch casing and Medium nozzle.
Price: $45.00
Out of Stock

Contrail Rockets 75mm 3200cc Tank Assembly

Details 

Contrail Rockets 75mm 3200cc Oxidizer Tank Assembly. Includes sealed tank, five-port injector, and flush-mounting bolts.
Price: $325.00
Out of Stock

Contrail Rockets I333 3-Pack Reload Kit

Details 

Three-pack of I333 reloads for Contrail Rockets hybrid motor. Requires 36 inch casing and Fast nozzle.
Price: $50.00
Out of Stock

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