Aerotech RMS 98/10240 BLACK MAX Assembly And Operation Instructions Download Page 1

DO NOT OPEN RELOAD KIT UNTIL READY TO USE.

PARTS:

RMS™-98 HARDWARE

98mm aft closure

1

98/10240 Case

1

98mm 

plugged 

forward closure

1

RELOAD KIT

Nozzle (black plastic part)

1

Liner (3-5/8" O.D. black plastic tube)

1

Propellant grains

4

Fwd & aft o-rings (3/16" thick X 3-5/8" O.D.)

2

Smoke charge grain (2.0” long short solid part) 1
Smoke charge insulator (1-1/2" O.D. tube)

1

Forward seal disk (3-5/8" O.D. phenolic disk)

1

Forward seal disk o-ring (3/32” thick X 3-3/8” O.D.)

1

ITEMS NEEDED FOR USE:

• Synco™ Super Lube™ or other grease
• Hobby knife
• Electric match w/thermalite, Firestar™ or other igniter
• Masking tape
• Wet wipes or damp paper towels

SAVE THE RELOAD KIT PLASTIC BAG FOR THE USED RE-
LOAD PARTS. DISPOSE OF BAG AND PARTS PROPERLY.

HIGH-POWER RMS™

HIGH-POWER RMS™

HIGH-POWER RMS™

HIGH-POWER RMS™

HIGH-POWER RMS™

 Assembly and Operation Instructions

 Assembly and Operation Instructions

READ THIS BEFORE YOU BEGIN:

• Study the illustrations and sequence of assembly.

THE SEQUENCE OF ASSEMBLY IS

EXTREMELY IMPORTANT. READ ALL INSTRUCTIONS BEFORE USE. USE RMS™
MOTORS AND RELOAD KITS ONLY IN ACCORDANCE WITH ALL INSTRUCTIONS.

Review the parts list and become familiar with all parts before assembly.  

IF ANY PARTS

ARE  MISSING  OR  DAMAGED,  CONTACT  RCS  AT  1-435-865-7100  or  email  at
[email protected].

DO NOT USE ANY PARTS OF THE RMS™ SYSTEM THAT ARE DAMAGED IN ANY
WAY.

  If in doubt, contact RCS at the number above for assistance.

DO NOT MODIFY THE MOTOR IN ANY WAY.  

Modification of the motor or the reload

kit parts could result in motor failure, lead to the destruction of both your rocket and motor
and may cause personal injury, death and/or property damage. Modification of the motor
or reload kit in any way will invalidate your motor warranty.

USE  ONLY  AEROTECH/RCS  RMS™  RELOAD  KITS  AND  MOTOR  PARTS  TO
REFURBISH  YOUR  RMS™  MOTOR. 

  The  AeroTech/RCS  reload  kits  have  been

designed specifically for use in your particular AeroTech/RCS RMS™ motor.  Use of
imitation components may destroy your motor, rocket and payload and will invalidate
your motor warranty.  Only use AeroTech/RCS RMS™ reload kits intended for your
specific  AeroTech/RCS RMS™ motor. 

 

DO NOT INTERCHANGE PARTS!  

  Do not use

AeroTech/RCS RMS™ reload kits or motor components for any other purpose than to
refurbish an AeroTech/RCS RMS™ motor.

DO NOT REUSE ANY OF THE DISPOSABLE PARTS OF THE RMS™ RELOAD KIT.

This includes the liner, nozzle and o-rings.  These components have been designed for
one use only and must be discarded after firing.  Reuse can result in motor failure during
subsequent operation and will invalidate your motor warranty.

• Motors are hot after firing.  Although the RMS™ operates at a lower temperature than

most disposable motors, the higher thermal conductivity of the aluminum motor parts
may make it seem otherwise.  If necessary to handle a motor before it has cooled down,
use a rag or similar article.

• Read and follow the safety code of the Tripoli Rocketry Association (TRA) and comply

with all federal, state and local laws in all activities involving high power rockets.

Chapter 1. Forward Closure Assembly

1-1.

Apply a light coat of Synco™ Super Lube™ or other
grease to all threads and both o-rings. This will facilitate
assembly and prevents the threads from seizing.

1-2.

Fig.-1:

 Insert the smoke charge insulator into the smoke

charge cavity until it is seated against the forward end
of the cavity.

1-3.

Fig.-2:

 Apply a liberal amount of grease to one end of

the smoke charge element. Insert the 

greased 

end of

the  smoke  charge  element  into  the  smoke  charge
insulator until it is seated against the forward end of the
smoke charge cavity. Set the completed forward clo-
sure assembly aside.

2-1.

Fig.-3: 

Using  a  hobby  knife  or  similar  tool,  carefully

deburr (chamfer) both inside edges of the liner tube (3-
5/8” O.D. black plastic tube).

98mm Plugged

Forward Closure

Smoke Charge

Insulator

Smoke
Charge
Cavity

Smoke Charge
Element

Fig.-1

Chapter 2. Case Assembly (Cont’d)

2-2.

Fig.-4:

 Place the greased forward seal disk (3/32" thick

X 3-3/8" O.D.) o-ring into the groove in the forward seal
disk.

2-3.

Fig.-5

:::::

 

Insert the smaller (o-ring) end of the seal disk

into the open end of the liner tube until the seal disk
flange is seated against the end of the liner.

2-4.

Fig.-6:

  Perform the remaining assembly steps with the

liner held in a horizontal position. Install the propellant
grains into the liner, seated against the forward seal
disk. 

NOTE:

 Three propellant  grains are shown in all

illustrations. RMS-98/10240 motors use four (4) grains.

2-5.

Fig.-7:

 Push the liner assembly  into the motor case aft

(nozzle) end first until it is equally recessed from both
ends of the case. 

NOTE:

 A coating of grease on the

outside surface of the liner will facilitate installation and
casing cleanup after motor firing.

2-6.

Fig.-8:

 Place the greased forward (3/16" thick X 3-5/8"

O.D.)  o-ring into the forward (bulkhead) end of the case
until it is seated against the forward seal disk.

2-7.

Fig.-9:

 Thread the forward closure assembly into the

forward end of the motor case by hand until it is seated
against the case.

2-8.

Fig.-10:

 Insert the nozzle into the aft end of the motor

case, with the nozzle flange seated against the liner
assembly.

2-9.

Fig.-11:

  Place  the  greased  aft  (3/16"  thick  X  3-5/8"

O.D.) o-ring into the groove in the nozzle.

2-10.

Fig.-12: 

Thread the aft closure into the aft end of the

motor case by hand until it is seated against the case.

NOTE:

 There will be considerable resistance to thread-

ing in the closure during the last 1/8" to 3/16" of travel.
It  is  normal  if  a  slight  (1/16”  to  3/32”)  gap  remains
between the closure and the case and the grains rattle
slightly in the liner after tightening.

Liner Assembly

Case

Fig.-8

Fig.-9

Forward O-Ring

Forward Closure Ass'y

Apply Grease to

Forward End  of

Smoke Charge

Fig.-12

Aft Closure

Case

Fig.-11

Fig.-10

Nozzle Flange

Aft

(Nozzle)

End Views

Liner

Assembly

Liner

Fig.-7

Case

Forward

(Bulkhead)

End Views

Forward
Seal Disk

Aft O-Ring

Fig.-2

Fig.-6

Fig.-4

Forward  Seal
Disk  (Phenolic
Washer)

Greased Forward
Seal Disk O-ring

Fig.-5

Forward Seal
Disk Assembly

Liner

Fig.-3

Chapter 2. Case Assembly

Deburr (Chamfer)
Both inner Edges

Liner

Propellant
Grains

Seal Disk

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