Pratt Hobbies, Inc.
Rocketry Catalog
 Innovative Launch Systems and Accessories
for Model Hobbyists
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Contrail Rockets H211 3-Pack Reload Kit
Contrail Rockets H211 3-Pack Reload Kit

Details 
Three-pack of H211 reloads for the Contrail Rockets 38mm motor system. Requires 20 inch casing and Medium nozzle.
Price: $45.00
Out of Stock
Contrail Rockets 75mm 2050cc Tank Assembly
Contrail Rockets 75mm 2050cc Tank Assembly

Details 
Contrail Rockets 75mm 2050cc Oxidizer Tank Assembly. Includes sealed tank, five-port injector, and flush-mounting bolts.
Price: $300.00
Out of Stock
Contrail 54mm 48 inch Motor Hardware System
Contrail 54mm 48 inch Motor Hardware System

Details 
Contrail 54mm 48 inch long hybrid motor hardware system. Includes all four nozzles (slow, med/fast, XFast, XXFast), forward bulkhead and two injector assemblies (standard and XXFast).
Price: $380.00
Out of Stock
Contrail Rockets J345 3-Pack Reload Kit
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 I333 3-Pack Reload Kit
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
Contrail Rockets G300 3-Pack Reload Kit
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
Contrail Rockets M711 Reload Kit
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 L1222 Reload Kit
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 54mm 48 inch Motor Casing Only

Details 
54mm, 48 inch long motor casing for Contrail hybrid motors. No internal parts or nozzles are included.
Price: $135.00
Out of Stock
Contrail Rockets H300 3-Pack Reload Kit
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 54mm Nozzle

Details 
Graphite nozzle to fit Contrail Rockets 54mm motor hardware. Specify Slow, Med/Fast, XFast, or XXFast.
:
Price: $35.00
Out of Stock
Contrail Rockets H141 3-Pack Reload Kit
Contrail Rockets H141 3-Pack Reload Kit

Details 
Three-pack of H141 reloads for the Contrail Rockets 38mm motor system. Requires 20 inch casing and Slow nozzle.
Price: $45.00
Out of Stock
Contrail Rockets H121 3-Pack Reload Kit
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
Contrail Rockets G130 3-Pack Reload Kit
Contrail Rockets G130 3-Pack Reload Kit

Details 
Three-pack of G130 reloads for the Contrail Rockets 38mm motor system. Requires 16 in casing and Medium nozzle.
Price: $45.00
Out of Stock
Contrail Rockets G123 3-Pack Reload Kit
Contrail Rockets G123 3-Pack Reload Kit

Details 
Three-pack of G123 reloads for the Contrail Rockets 38mm motor system. Requires 16 in casing and Slow nozzle.
Price: $60.00
Out of Stock
Contrail Rockets G100 3-Pack Reload Kit
Contrail Rockets G100 3-Pack Reload Kit

Details 
Three-pack of G100 reloads for the Contrail Rockets 38mm motor system. Requires 16 in casing and Slow nozzle.
Price: $45.00
Out of Stock
Contrail Rockets K777 Reload Kit
Contrail Rockets K777 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 K777. Black fuel composition.
Price: $85.00
Out of Stock
Contrail Rockets K456 Reload Kit
Contrail Rockets K456 Reload Kit

Details 
One fuel grain and parts for the CR-75-1400 Contrail motor casing set with Slow nozzle and Mini combustion chamber. Tripoli certified as K456. Sparky fuel composition.
Price: $75.00
Out of Stock
Contrail Rockets 75mm 1400cc Tank Assembly
Contrail Rockets 75mm 1400cc Tank Assembly

Details 
Contrail Rockets 75mm 1400cc Oxidizer Tank Assembly. Includes sealed tank, five-port injector, and flush-mounting bolts.
Price: $285.00
Out of Stock
Contrail Rockets H277 3-Pack Reload Kit
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 H377 3-pack Reload Kit
Contrail Rockets H377 3-pack Reload Kit

Details 
Three-pack of H377 reloads for the Contrail 38mm motor system. Requires 28 inch casing and Fast nozzle.
Price: $60.00
Out of Stock
 
Contrail 54mm XXFast Injector

Details 
Three port injector for Contrail 54mm hybrid motors. Fits all casing lengths. Used with XFast nozzle only.
Price: $60.00
Out of Stock
 
Contrail 54mm Set of 4 Nozzles

Details 
Graphite nozzles to fit Contrail Rockets 54mm motor hardware. Set includes Slow, Med/Fast, XFast, or XXFast.
Price: $135.00
Out of Stock
Contrail 54mm J642 Reload Kit
Contrail 54mm J642 Reload Kit

Details 
One J642 reload for Contrail 54mm hybrid motor. Includes injector orifice, fill line, igniter. Requires 36 in. 54mm casing with X-Fast nozzle and three- port injector.
Price: $54.00
Out of Stock
Contrail 54mm J358 Reload Kit
Contrail 54mm J358 Reload Kit

Details 
One J358 reload for Contrail 54mm hybrid motor. Includes injector orifice, fill line, igniter. Requires 36 in. 54mm casing with Medium nozzle and single port injector.
Price: $44.00
Out of Stock
Contrail 54mm J355 Reload Kit
Contrail 54mm J355 Reload Kit

Details 
One J355 reload for Contrail 54mm hybrid motor. Includes injector orifice, fill line, igniter. Requires 28 in. 54mm casing with Medium nozzle and single port injector.
Price: $44.00
Out of Stock
Contrail Rockets I290 3-pack Reload Kit
Contrail Rockets I290 3-pack Reload Kit

Details 
Three-pack of I290 Sparky reloads for the Contrail Rockets 38mm motor system. Requires 36 in casing and Fast nozzle.
Price: $70.00
Out of Stock
Contrail Rockets H340 3-pack Reload Kit
Contrail Rockets H340 3-pack Reload Kit

Details 
Three-pack of H340 Sparky reloads for the Contrail Rockets 38mm motor system. Requires 28 in casing and Fast nozzle.
Price: $70.00
Out of Stock
 
Contrail 54mm 28 inch Motor Casing Only

Details 
54mm, 28 inch long motor casing for Contrail hybrid motors. No internal parts or nozzles are included.
Price: $95.00
Out of Stock
Contrail Rockets I747 3-pack Reload Kit
Contrail Rockets I747 3-pack Reload Kit

Details 
Three-pack of I747 reloads for the Contrail 38mm motor system. Requires 28 inch casing and XXF Upgrade Kit.
Price: $80.00
Out of Stock
 
Contrail 54mm Forward Bulkhead

Details 
Forward Bulkhead fits all lengths of Contrail 54mm motor casings. Seals N2O tank section of motor and provides fitting for vent tube.
Price: $50.00
Out of Stock
Contrail Rockets I255 3-pack Reload Kit
Contrail Rockets I255 3-pack Reload Kit

Details 
Three-pack of I255 reloads for the Contrail 38mm motor system. Requires 28 inch casing and Medium nozzle.
Price: $60.00
Out of Stock
Contrail Rockets H246 3-pack Reload Kit
Contrail Rockets H246 3-pack Reload Kit

Details 
Three-pack of H246 reloads for the Contrail 38mm motor system. Requires 20 inch casing and Medium nozzle.
Price: $60.00
Out of Stock
Contrail 54mm Top Hat fitting
Contrail 54mm Top Hat fitting

Details 
The 54mm "Top Hat" Retention Fitting fits between the standard forward closure that comes with Contrail 54mm hybrid rocket motors and the forward snap ring. The vent on the forward closure fits through a hole in the Top Hat. Installing the Top Hat gives you a strong, positive attachment point for your shock cord or motor retention system.
Price: $25.00
Out of Stock
Contrail Rockets H303 3-pack Reload Kit
Contrail Rockets H303 3-pack Reload Kit

Details 
Three-pack of H303 reloads for the Contrail 38mm motor system. Requires 16 inch casing and Fast nozzle.
Price: $45.00
Out of Stock
 
Contrail 38mm XXF Upgrade

Details 
Upgrade kit required to fire XXF loads. Includes special injector and nozzle.
Price: $60.00
Out of Stock
FullBoost Handheld Launch System
FullBoost Handheld Launch System

Details 
12 volts of ignition power in the palm of your hand! The FullBoost Handheld Launch System comes with 8 AA alkaline batteries already installed, so you're ready to launch immediately. When the batteries run down, snap the sides off the control box to open it and replace the AA cells. A 25 foot cable connects the FB to the launch pad, using common audio connectors so extension cords are easily added.
Price: $64.95
Out of Stock
Stensat Radio Beacon
Stensat Radio Beacon

Details 

The Stensat radio beacon is a small FM transmitter capable of generating AX.25 Unnumbered Information (UI) packets at 1200 bps AFSK and 9600 bps FSK. The 9600 bps FSK signal is compatible with G3RUH modulation. Power level is adjustable from 0 to 3 watts operating on a single 5 to 12 volt supply.
Price: $750.00
Out of Stock
Contrail 54mm Retention Bulkhead
Contrail 54mm Retention Bulkhead

Details 
The 54mm Retention Bulkhead is substituted for the standard forward closure that comes with Contrail 54mm hybrid rocket motors, and includes a vent like the standard closure. The Retention Bulkhead provides a strong, positive attachment point for your shock cord or motor retention system.
Price: $50.00
Out of Stock
Contrail Rockets I727 3-pack Reload Kit
Contrail Rockets I727 3-pack Reload Kit

Details 
Three-pack of I247 reloads for the Contrail 38mm motor system. Requires 36 inch casing and XXF Upgrade Kit.
Price: $80.00
Out of Stock

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