67 Contrail hybrid motors are now Tripoli certified!

152mm (1) 98mm (3) 75mm (17)
  54mm (12) 38mm (34)
 
Motor
Designation
Total Impulse
(Nt/Sec)
Burn Time
(sec)
Casing
Diameter
Casing Length
O6300 28,197 4.5 152mm 72 in.
M2800 6059 2.35 98mm 60 in
M2700 6034 2.3 98mm 60 in.
M1575 6546 4.2 98mm 60 in
M2281 5482 2.14 75mm 60 in
M1491 5675 3.35 75mm 54 in
M711 5507 7.22 75mm 54 in
L2525 4677 1.9 75mm 60 in
L1428 4733 3.1 75mm 60 in
L1222 3682 3.1 75mm 54 in
L800 3759 4.6 75 mm 54 in
L369 3828 10.5 75mm 54 in
K888 2400 2.67 75mm 40 in
K777 1833 2.6 75mm 40 in
K707 1385.8 1.9 75mm 32 in
K678 1847 2.8 75mm 40 in
K630 1340.6 2.2 75mm 32 in
K543 2096 3.6 75mm 32 in
K456 1628 3.7 75mm 32 in
K404 2441 6.4 75mm 40 in
K300 1909 6.5 75mm 40 in
K555 1686.4 3.04 54mm 48 in
K321 1569.9 4.89 54mm 48 in
K265 1684 6.26 54mm 48 in
K234 1656.9 7.04 54mm 48 in
J642 1115 1.73 54mm 36 in
J416 1118 2.68 54mm 36 in
J358 1108 2.79 54mm 36 in
J355 670 1.875 54mm 28 in
J292 791 2.33 54mm 28 in
J272 1138 3.88 54mm 36 in
J245 643.5 2.62 54mm 28 in
J234 1032.57 4.3 54mm 36 in
J800 928 1.2 38mm 48 in
J555 795 1.6 38mm 48 in
J345 891 2.7 38mm 48 in
J333 733 2.4 38mm 48 in
J246 673 2.8 38mm 36 in
J242 752 3.1 38mm 48 in
J222 928 4.3 38mm 48 in
J150 654 4.1 38mm 36 in
I747 341 .5 38mm 36 in.
I727 513 .7 38mm 28 in.
I500 336 1.0 38mm 28 in
I400 432 1.0 38mm 36 in
I333 556 1.7 38mm 36 in
I307 573 1.85 38mm 36 in
I290 884 1.5 38mm 36 in.
I255 430 1.7 38mm 28 in
I221 335 1.74 38mm 28 in
I210 497 2.72 38mm 36 in
I155 451 3.5 38mm 28 in
H340     38mm 28 in.
H303 170 0.6 38mm 20 in
H300 161 0.62 38mm 20 in
H277 292 1.15 38mm 28 in
H248 261.5 1.06 38mm 16 in
H246 222 0.9 38mm 20 in
H222 161 0.7 38mm 16 in
H211 206 0.97 38mm 20 in
H141 241 1.7 38mm 20 in
H121 225 1.85 38mm 20 in
G300 100 0.25 38mm 16 in
G234 117.95 .53 38mm 28 in
G130 100 0.86 38mm 16 in
G123 142 1.15 38mm 16 in
G100 146 1.43 38mm 16 in

 

 

 

 

 

   

Contrail Rockets Hybrid Motor Hardware

Contrail 75mm and 98mm hybrid motor systems consist of three pieces of hardware: the oxidizer tank, the combustion chamber, and the nozzle. All three are connected with hex-head flush mounting bolts. To assemble a Contrail 75mm motor, you select one of three different sizes of oxidizer tank, one of four different sizes of combustion chamber, and one of three different nozzles, and bolt them together.  75mm reload kits come with a fuel grain, a set of fill and vent tubes, an igniter, and a set of injectors that screw into the oxidizer tank. The fuel grain is cast in a paper liner; several different fuel formulas are available. 

Contrail 38mm and 54mm hybrids are monotube motors with an internal injector baffle that separates the fuel grain from the oxidizer compartment. The injector baffle can be in different positions depending on the length of the fuel grain (like the "floating injector" motors made by Ratt Works, Propulsion Polymers and Sky Ripper). There are five different 38mm motor lengths. The forward bulkhead/vent and injector baffle are the same for all 38mm motors (except for the J800, which requires a special high speed injector baffle), and they are all held in place by external snap rings. There are three different nozzles available: slow, medium and fast/x-fast. The injector orifice comes with the reload kit and is not part of the standard hardware set; it is used once and replaced. Two fuel grains are used: solid PVC, and a high regression rate fuel that is cast in a thin PVC liner.

The combinations of different motor casing lengths, different nozzles, different injector sizes, and different fuel formulas makes the Contrail hybrid motors the most flexible hybrid motor hardware available. Contrail Rockets has demonstrated a commitment to certify and produce as many practical motor combinations as possible. This makes the Contrail motor hardware an outstanding value.

 

You can purchase Contrail hardware in three different ways:

bullet

Motor Hardware Set: One set of components for a specific certified motor combination. You specify the nozzle and combustion chamber when you order. For example, if you want an L1222, you order the 3200cc 75mm Motor Hardware Set with a Medium combustion chamber and Medium nozzle. This hardware can also accept the M1494 load.
 

bullet

Motor Hardware System: One set of components for a specific casing size, with three nozzles included.  For example, the 38mm 28 inch System includes a 28 inch casing, an injector, a forward bulkhead, and all three nozzles. It will handle all motor combinations that fit in the 28 inch casing (J250, I500, I221, I115, H277).
 

bullet

Complete Motor Hardware System: All components for all certified motor combinations. Each System includes all casings, nozzles and parts available in that size.

Components are also sold separately. So, for example, if you get the 3200cc 75mm Hardware Set with a Medium combustion chamber nozzle for the L122 load, you can add a Long combustion chamber and Fast nozzle to allow you to use the L2525 and M2281 loads. The 38mm Injector Baffle and Forward Bulkhead are the same across all 38mm motor sizes, so once you have one 38mm Motor Hardware System you can simply add different motor casing lengths to the hardware you already have, and use more motor combinations. 

 

Details of the Contrail 75mm hybrid motor hardware (98mm and 152mm hardware is similar)

Fuel Grains are available in several different propellant compositions. Since this is a hybrid motor, the fuel grain has no oxidizer mixed with it like conventional solid propellant. It is shippable without hazmat restrictions and does not require special storage.

There are three Nozzles: Slow, Medium and Fast. The nozzle itself is a precision machined piece with a graphite insert; the throat of the graphite insert determines the nozzle speed. The nozzle bolts into the aft of the Combustion Chamber with flush mounted hex head bolts and is sealed with two O-rings. There is a groove just above the bell section of the nozzle for a snap ring that serves as a thrust ring and retention device.

 

The upper section of the Contrail motor is the Tank Assembly, which incorporates the five-port Injector.

The oxidizer tank vents through the center port of the injector. No extra hole or fitting in the rocket body is required for the vent line. The vent line is secured outside by a special fitting that can be attached to the launch pad in a position where it is easily visible.

The igniter has an internal tube that slides onto the central 1/8 inch vent tube. It also has two separate heater elements, requiring 24 volts instead of the usual 12 volts.

Each Reload kit contains a Fuel Grain, a bundle of tubing, an igniter, and five push-to-connect injector fittings. The bundle ("loom") of tubing has four outer tubes and once center tube. The center tube is the vent, and is always 1/8 inch clear tubing. Two of the outer four tubes are looped, and the other two are connected to the fill system to fill the oxidizer tank.

Fast motors use 1/4 inch diameter fill tubing. Medium motors use 3/16 diameter tubing, and Slow motors use 1/8 inch diameter fill tubing. Since the connectors are provided with each reload kit, the injector serves all three speeds.

Contrail reloads are non-pyrotechnic as shipped. They require the addition of Pyrodex pellets as igniter boosters. This allows them to be shipped and stored without regulatory issues.

   

 Certified 152mm Motor Combination

Motor N2O Tank Total Impulse
nt/sec
Peak Thrust
lbs
Nozzle Burn Time
seconds
Fuel Grain Total Motor Length
O6300 15000cc 28197 2850 Fast 4.51 Black Gold 72 in.

152mm Motor Hardware Price Schedule

Catalog Number Item Name Price
CR-152-SYS Complete 152mm Motor System: One tank, one combustion chamber, one nozzle

$2495

152mm Hybrid Motor Reload Chart

Motor Hardware Required Fuel Type Catalog Number Price
O6300 Standard Black Gold Fuel CR-152-O6300-BG $1000

 

 

 Certified 98mm Motor Combinations

Motor N2O Tank Combustion Chamber Nozzle Fuel Grain Total Motor Length
M2800 5300cc Standard XFast Black Gold 1524mm
60 in.
M2700 5300cc Standard XFast Black Smoke 1524mm
60 in.
M1575 5300cc Standard Medium Black Gold 1524mm
60 in.

98mm Motor Hardware Price Schedule

Catalog Number

Item Name

Price

CR-98-SYS Complete 98mm Motor System: One tank, one combustion chamber, one nozzle housing, two nozzle inserts (XFast, Medium)

$1000

98mm Hybrid Motor Reload Chart

Motor Hardware Required

Fuel Type

Catalog Number

Price

M2800 Standard tank, combustion chamber and nozzle housing,
XFast nozzle insert
Black Gold Fuel CR-98-M2800-BGXF $225
M2700 Standard tank, combustion chamber and nozzle housing,
XFast nozzle insert
Black Smoke Fuel CR-98-M2700-BSXF $225
M1575 Standard tank, combustion chamber and nozzle housing,
Medium nozzle insert
Black Gold Fuel CR-98-M1575-BGM $200

 

 

Certified 75mm Motor Combinations

Motor N2O Tank Combustion Chamber Nozzle Fuel Grain Total Motor Length Catalog Number Price
M2281 3200cc 18 in. (Long) Fast Fast Black 1524mm
60 in.
CR-M2281-FB $130
M1491 3200cc 12 in. (Medium) Medium Medium Black 1372mm
54 in.
CR-M1491-MB $95
M711 3200cc 12 in. (Medium) Slow Slow Black 1372mm
54 in.
CR-M711-SB $95
L2525 3200cc 18 in. (Long) Fast Black Gold Fast 1524mm
60 in.
CR-L2525-FB $130
L1428 3200cc 18 in. (Long) Fast Fast Sparky 1524mm
60 in.
CR-L1428-FS $95
L1222 3200cc 12 in. (Medium) Medium Medium Sparky 1372mm
54 in.
CR-L1222-MS $95
L800 3200cc 12 in. (Medium) Medium Black Gold 1372mm
54 in.
CR-L800-BGM $95
L369 3200cc 12 in. (Medium) Slow Sparky 1372mm
54 in.
CR-L369-SS $95
K888 2050cc 10 in. (Short) Medium Medium Black 1016mm
40 in.
CR-K888-MB $85
K777 2050cc 10 in. (Short) Medium Medium Black Gold 1016 mm
40 in
CR-K777-SM $75
K707 1400cc 8 in. (Mini) Medium Black Gold 813mm
32 in.
CR-K707-BGM $75
K678 2050cc 10 in. (Short) Medium Black Gold 1016mm
40 in
CR-K678-BGM $85
K630 1400cc 8 in. (Mini) Medium Sparky 813mm
32 in.
CR-K630-SM $75
K543 1400cc 8 in. (Mini) Slow Slow Black 813mm
32 in.
CR-K543-SB $75
K456 1400cc 8 in. (Mini) Slow Sparky 813 mm
32 in
CR-K456-BGS $85
K404 2050cc 10 in. (Short) Slow Sparky 1016mm
40 in
CR-K404-SPS $85
K300 2050cc 10 in. (Short) Slow Black Smoke 1016mm
40 in
CR-K300-BSS $85

75mm Motor Hardware Price Schedule

Catalog Number

Item Name

Price

CR-75-SYS 75mm Complete Motor System (all parts for all motor combinations)

$1450.00

CR-75-3200-COMP 75mm 3200cc Motor Hardware (select a nozzle and a combustion chamber for the reload you want) $550.00
CR-75-3200-SET 75mm 3200cc Motor Hardware Set (includes all nozzles) $825.00
CR-75-2050-COMP 75mm 2050cc Motor Hardware (select a nozzle and a combustion chamber for the reload you want) $475.00
CR-75-2050-SET 75mm 2050cc Motor Hardware Set (includes all nozzles) $550.00
CR-75-1450-COMP 75mm 1450cc Motor Hardware (select a nozzle and combustion chamber for the reload you want) $450.00
CR-75-1450-SET 75mm 1450cc Motor Hardware Set (includes all nozzles) $525.00
CR-75-3200-T 75mm 3200 cc Nitrous Tank Assembly $325.00
CR-75-2050-T 75mm 2050cc Nitrous Tank Assembly $300.00
CR-75-1450-T 75mm 1400cc Nitrous Tank Assembly $285.00
CR-75-CC-LONG 75mm 17.875 in. (Long) Combustion Chamber $145.00
CR-75-CC-MED 75mm 11.875 in. (Medium) Combustion Chamber $135.00
CR-75-CC-SH 75mm 9.875 (Short) Combustion Chamber $100.00
CR-75-CC-MINI 75mm 7.875 (Mini) Combustion Chamber $100.00
CR-75-NOZ-FAST 75mm Nozzle (Fast) $140.00
CR-75-NOZ-MED 75mm Nozzle (Medium) $115.00
CR-75-NOZ-SLOW 75mm Nozzle (Slow) $100.00

 

 

 
 

Contrail 38mm and 54mm Hybrid Motor Hardware

Contrail 38mm hybrid motors are monotube motors with internal components held in place with snap rings. There are five motor casing lengths available:  16 inch, 20 inch, 28 inch, 36 inch and 48 inch. Three nozzles are available: Slow, Medium and Fast. The Injector Baffle and Forward Bulkhead are identical throughout the motor range. The orifice that screws into the Injector Baffle is supplied with each reload kit, and is used only once.

Contrail 54mm hybrid motors are similar to the 38mm series. Four nozzles are currently available: Slow, Medium/Fast, X-Fast and XX-Fast (an X-Slow and ridiculously fast nozzle are in work). Two injectors are used: one uses a single port, and one uses three ports. As with all Contrail motors, each reload kit includes the right size injector orifices and appropriate fill tubing, configured in loops if necessary.

Contrail 38mm and 54mm motors are ignited with a special resistor igniter that requires 24 volts. Pyrodex pellets are required for ignition. Pyrodex pellets are commonly available at gun and recreation stores (including many Wal-Mart and K-Mart stores, or online) and do not require special storage or permits. Full details are in the Contrail instructions; contact us if you have any questions.

 

 

 

 

 

 

 

 

 

 

Certified 38mm Motor Combinations

Motor Designation Casing Length
(inches)
Fuel Grain Nozzle Speed Average Thrust
(Nt)
Peak
Thrust
(Nt)
Total Impulse
(Nt/Sec)
Burn Time
(Sec)
Price
3-pack
J800 48 HP XXF* 758 4840 928 1.2 $80
J555 48 HP **X-Fast 497 2500 795 1.6 $70
J345 48 PVC Fast 318 1222 891 2.7 $50
J333 48 HP Fast 305 1227 733 2.4 $60
J242 48 PVC Medium 242 875 752 3.1 $45
J222 48 HP Medium 216 786 928 4.3 $60
J246 36 HP Medium 238 490 673 2.8 $60
J150 36 HP Slow 155 490 654 4.1 $60
I727 36 HP XXF       .7 $80
I400 36 HP **X-Fast 398 1006 432 1 $70
I333 36 PVC Fast 329 853 556 1.7 $50
I307 36 HP Fast 308 777 573 1.85 $60
I290 36 Sparky Fast         $70
I210 36 PVC Medium 182 648 497 2.72 $45
I747 28 HP XXF*       .5 $80
I500 28 HP **X-Fast 479 1069 336 0.7 $70
I255 28 HP Medium 255 736 430 1.7 $60
I221 28 PVC Medium 203 433 335 1.74 $45
I155 28 HP Slow 155 366 451 3.5 $60
H340 28 Sparky Fast         $70
H277 28 HP Fast 252 793 292 1.15 $60
H246 28 PVC Fast 246 746 262 1.1 $60
H246 20 HP Medium 238 653 222 0.9 $60
H303 20 PVC Fast 283 752 170 0.6 $45
H300 20 HP Fast 259 710 161 0.62 $60
H211 20 PVC Medium 211 674 206 0.97 $45
H141 20 PVC Slow 141 297 241 1.7 $45
H121 20 HP Slow 121 294 225 1.85 $60
H222 16 HP Medium 225 619 161 0.7 $60
G300 16 PVC Fast 288 689 100 0.25 $45
G130 16 PVC Medium 115 706 100 0.86 $45
G123 16 HP Slow 123 413 142 1.15 $60
G100 16 PVC Slow 101 230 146 1.43 $45

Notes:

    * XXF motors requires a special injector baffle and nozzle, sold separately.

    **"X-Fast" uses the Fast nozzle, so there are only three nozzles in the complete set (Slow, Medium, Fast). "X-Fast" refers to the combination of the Fast nozzle and 5/16 inch injector fitting (the fitting comes with the reload pack).

 

 

Certified 54mm Motor Combinations

Motor Designation Casing Length
(inches)
Fuel Grain Nozzle Speed Average Thrust
(Nt)
Total Impulse
(Nt/Sec)
Burn Time
(Sec)
Price
(Single load)
J245 28 Black Gold Slow  245 644 2.62 $44
J292 28 Sparky Slow 291 791 2.33 $44
J355 28 Black Gold Medium 357 670 1.875 $44
J234 36 Black Gold Slow  239 1033  4.3 $44
J272 36 Sparky Slow 276 1138 3.88 $44
J358 36 Black Gold Medium 358 1108 2.79 $44
J416 36 Sparky Medium 416 1118 2.68 $44
J642 36 Black Gold X-Fast 633 1115 1.73 $54
K234 48 Black Gold Slow  234 1657 7.04 $44
K265 48 Sparky Slow 265 1684 6.26 $44
K321 48 Black Gold Medium  320 1570  4.89 $44
K555 48 Black Gold X-Fast 554 1686 3.04 $54