Description

This article is from the Model Rockets FAQ, by Wolfram von Kiparski with numerous contributions by others.

5.8 Are the Aerotech composite motors the same size as Estes/MRC/Quest motors?

Aerotech makes the following 'standard' retail motors in -4 and -7
second delays. The first two motors are the same size as Estes A-C motors.
The next two are the same size as Estes D motors. There are some other
24mm motors that are available from Aerotech that are longer than
Estes D motors. Some of these 'non-standard' Aerotech 24mm motors are listed
after the four 'standard' ones. The F and G motors may be obtained from
some dealers and mail order sources, but are not packaged for retail sale.

      Motor         Size           Power            Same Size As
      D21           18x70mm        20NS             Estes/Quest/MRC A-C
      E25           18x70mm        22NS             Estes/Quest/MRC A-C
 
      E15           24x70mm        40NS             Estes D motor
      E30           24x70mm        40NS             Estes D motor
 
      F32           24x124mm       80NS             Non-standard size
      F44           24x101mm       70NS             Non-standard size
      G42           24x144mm       90NS             Non-standard size
      G55           24x177mm      125NS             Non-standard size

Aerotech makes and sells reloadable motor casings and reloads in 18,
24 and 29 mm sizes. The 18mm is the size of an Estes C motor. The
24mm is the size of an Estes D or Aerotech E motor. The 29mm is the
size of an Aerotech G motor. Aerotech High Power, formerly ISP Consumer
Rocketry division, makes a 60NS F and 100NS G casing, both 29mm in
diameter.

 

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