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Genesis of LMR & HPR.

18mm Mass Market Series

MICRO-INTERROC


MICRO-INTERROC is U.S. Rockets most versatile small model rocket vehicle. Designed to accept rated power of 240 N-s, MICRO-INTERROC is a screamer. Classic styling and multiple "Interchange Mount-tm" design provide a highly versatile choice of motors, all changeable at the launch site! Streamer recovery brings your rocket home. Try 3x 13mm A3-4T, 1x 18mm C6-5, 1x 24mm D12-7, 1x 29mm F20-8.

SPECIFICATIONS
Skill 2
Host Mount 29mm
Interchange
Mounts
24mm
18mm
3x 13mm
Recovery Streamer
Diameter 1.22"
Length 21"
Weight 85g
Drag (CD) 0.65e
CP(") UNK
SKU# 1180
Price $26.95
Definition Of Terms
MICRO-INTERROC can be slightly modified to accept new dual deployment systems and altimeters. The payload can be deployed on both sides of the coupler or the payload tube. This rocket is recomended for sport fliers who want to learn U.S. Rockets exclusive design features on the cheap. And the sheer power range is shockingly wide as well. It flies surprisingly well on B6-4. Best flights are with USR E25-8 or F18-8. MICRO-INTERROC has been successfully tested with as high of power and thrust as 240H240-12. Its very strong and lightweight construction makes it fly surprisingly high compared to other rocket kit brands. Test it for yourself!
All U.S. Rockets 18mm Mass Market series kits feature pre-cut fins, heavy duty airframe tubes, strong elastic shock cord, illustrated assembly and flight instructions, and all the high quality parts needed to successfully assemble and fly a high performance model rocket. Launcher, motors, glue, sandpaper, sealer and paint not included.



pkg
Package.

pkg
Package.


Finished main airframe.


Component parts.


Component parts.


This modeller put lines on the fins to aid sanding
the tapers in a symmetrical and consistent way.


3x 13mm "Interchangable Motor Mount"-tm fits in the 29mm
"Host Mount"-tm, which in this case is the airframe tube.


Tissue and glue are put in the small gaps to
prevent ejection charge gas leakage on deployment.


24mm "Interchangable Motor Mount"-tm fits in the 29mm
"Host Mount"-tm, which in this case is the airframe tube.


3x 13mm "Interchangable Motor Mount"-tm fits in the 29mm
"Host Mount"-tm, which in this case is the airframe tube.


18mm "Interchangable Motor Mount"-tm fits in the 29mm
"Host Mount"-tm, which in this case is the airframe tube.
The 18mm motor mount tube should extend 1/4-1/2" to
allow applying tape to retain the motor in the rocket
unlike this prototype.
"Interchange Mounts"-tm have a thrust ring tube glued to
them to eliminate the need for masking tape at that point.
Entire "Interchange Mount"-tm systems can be prepared
before the launch and interchanged at the field to save
time and increase the launching rate.

Nose cone styles vary among kit batches including plastic and balsa.

13mm (0.49") is Estes mini 1/4A/1/2A/A diameter, 18mm (0.69") is Estes
1/2A/A/B/C diameter, 24mm (0.93") is Estes C/D/E diameter.
24mm is USR C/D/E/F/G/H. 29mm (1.125") is Estes E/F diameter.
29mm is USR E/F/G/H/I/J.


Centuri Engineering Company merged with Estes Industries
decades ago. Before that some amazing products existed that
we enjoyed, and serves to inspire rockets like the Micro-Interroc.
USR models accept any length motor.




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