AEROTECH N4000W-PS RMS Motor Instructions

June 12, 2024
aerotech

Grain Bonding Instructions
for the N4000W-PS RMS Motor

N4000W-PS RMS Motor

NOTE: PLEASE SCAN THIS QR CODE AND WATCH THE LINKED VIDEO BEFORE PROCEEDING WITH MOTOR ASSEMBLY! https://youtu.be/QIU-V2_Ry-A ALSO REFER TO INCLUDED N4000W MOTOR ASS’Y DRAWING

https://youtu.be/LQQwxQaVY_I

  1. Check liner for cracks and squareness. Wipe the inside of liner with a damp rag or paper towels taped to a stick or handle. This removes dust and adds some moisture which helps the Gorilla Glue or Elmer’s Glue-All Max to cure properly.AEROTECH N4000W PS RMS Motor - MOTOR ASSEMBLY
  2. Dry-fit each of the grains into the case and make sure they slide easily inside the case. If not, sand lightly until they do.AEROTECH N4000W PS RMS Motor - MOTOR ASSEMBLY 1
  3. Apply Gorilla Glue or Elmer’s Glue-All Max to the outside surface of the forward (uninhibited) grain and install in the nozzle end of liner with a twisting motion.
  4. Install the first grain spacer O-ring, placed against the end of the forward grain.
  5. AEROTECH N4000W PS RMS Motor - MOTOR ASSEMBLY 3
  6. Apply Gorilla Glue or Elmer’s Glue-All Max to the outer surface of the ‘A’ grains, one at a time. Install the first ‘A’ grain into the liner with a twisting motion, with the uninhibited end toward the forward grain.
  7. AEROTECH N4000W PS RMS Motor - MOTOR ASSEMBLY 2
  8. Apply 30-minute epoxy to the pre-inhibited ends of the ‘A’ grains, one at a time.

AEROTECH N4000W PS RMS Motor - MOTOR ASSEMBLY 4

  1. Install the second ‘A’ grain into the liner with a twisting motion ,with the pre-inhibited end facing the pre-inhibited end of the first ‘A’ grain.AEROTECH N4000W PS RMS Motor - MOTOR ASSEMBLY 5
  2. Install the second grain spacer O-ring into the case after the second ‘A’ grain is installed.AEROTECH N4000W PS RMS Motor - MOTOR ASSEMBLY 6
  3. Repeat steps 5-8 exactly for the ‘B’ and ‘C’ grain sets, except that no grain spacer O-ring is installed after the second ‘C’ grain.
  4. Use the nozzle to push the second ‘C’ grain to the proper depth in the case.AEROTECH N4000W PS RMS Motor - MOTOR ASSEMBLY 7
  5. Clean the nozzle end of the liner and the nozzle flange with acetone to remove all traces of glue.AEROTECH N4000W PS RMS Motor - MOTOR ASSEMBLY 8
  6. Apply grease to the nozzle end of the liner and nozzle flange to prevent expanding glue from bonding the nozzle to the liner.AEROTECH N4000W PS RMS Motor - MOTOR ASSEMBLY 9
  7. Follow the included 98mm RMS instructions to complete motor assembly. Stand the finished motor on the nozzle end and allow to cure for 24 hours before use.

Made in USA
P/N 20115-1 2/26/23 Rev. A
©2023 RCS Rocket Motor Components, Inc., All rights reserved

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