Rocketry Planet

LAS VEGAS, Nevada USA — Effective 7/1/98, AeroTech began updating the Easy Access RMS™ 29/240 reloadable rocket motor and the H220T (Blue Thunder™) reload kit to require the use of a new RMS 29mm forward seal disc (P/N #29FSD) in the reloading process of the H220T.

These changes have been made in order to minimize the chance of "blistering" or bulging the exterior surface of the 29/240 motor casing just below the forward closure threads (due to excess hot gas flow between the 29mm phenolic liner and the inner surface of the aluminum casing) during operation of the H220T reload kit. By making the forward seal disc a required part of H220T reload kit assembly, AeroTech will drastically reduce future occurrences of this form of motor casing damage, thus insuring the long-term safety and reliability of this particular RMS motor.

Therefore, the 29mm forward seal disc will be incorporated into the entire line of RMS 29/240 hardware and result in the following:

• The retail price of the RMS™ 29/180-240 system set, the 29/240 motor and the 29/240 casing will increase $10.00 to $83.95, $69.95, and $32.95 respectively.
• The H220T reload kit will be changed by the removal of the one (1) fiber insulator washer and the addition of a 7/8" O.D. x 1/16" inch thick forward seal disc O-ring. The cost of the H220T reload kit will be $21.95.
• However, the H97J and H180W reload kits will NOT require the 29mm forward seal disc and will remain unchanged as they both utilize incompatible paper propellant grain liners.
• *None* of the 29/180 reload kits will require the 29mm forward seal disc as they all utilize incompatible paper propellant grain liners.

IMPORTANT NOTICE: For those current owners of RMS 29/180-240 systems, 29/240 motors or 29/240 cases who will need a forward seal disc in order to use the updated H220T reload kit, AeroTech is extending the following special offer:

For a period of approximately one year, beginning July 6, 1998, owners of AeroTech Easy Access high power products may directly order from AeroTech by either phone, fax, or mail, up to six (6) 29/240 Update Kits (Part No. 29FSDUG) for $5.00 ea. including postage. (The "29/240 Update Kit" includes a 29mm forward seal disc, six seal disc o-rings, and a copy of a new RMS H220T reload kit assembly instruction sheet). This special offer ends July 1, 1999 and is available ONLY through AeroTech.

If you have any questions about the "29/240 Update Kit" or Easy Access/RMS high power rocket products in general, please email Ed LaCroix at:

This email address is being protected from spam bots, you need Javascript enabled to view it  or by calling (602) 780-2946 weekdays from 8-5pm PST.