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TRUE MINIMUM DIAMETER MOTOR RETENTION

Bulkhead Motor Retainers for Minimum Diameter Rockets

Bottom view of 38mm thru 98mm retainers with stainless steel motor mounting studs

 

Top view of 38mm thru 98mm retainers with threaded holes for accessory mounting

 

Top view of 38mm thru 98mm retainers with optional stainless steel eye-bolts

 

  • For 38mm Thru 98mm Airframes Or Motor Mount Tubes
  • Offers Fast, Clean, Tape-Free And Tool-Free Motor Change
  • Made from Precision Machined Aluminum, Red Anodized
  • Nothing Protrudes Beyond Airframe Outside Diameter
  • Retainer Is Bonded Inside Airframe Above Motor
  • Requires Forward Closures With Threaded Hole
  • Simply Screw Motor Onto Stud On Bulkhead Retainer
  • Aft-Closure Or Snap-Ring Seats Against End Of Airframe
  • Threaded Hole On Forward End For Accessory Mounting
  • Optional Eye-Bolt Attached To Forward End Of Bulkhead
  • Optional Extension Couplers For Flying Shorter Motors

Part Numbers and Descriptions:

M38: for 38mm airframe and motor mount tubing
M38B: has bypass holes for use with AeroTech P/N 38FCRRA
Motor mounting stud on bottom of retainer is 5/16-18.
Accessory mounting hole on top of retainer is threaded 10-24.
M38E: includes a 3/16 inch welded eye-bolt.
M38BE: has bypass holes and 3/16 inch welded eye bolt.

M54: for 54mm airframe and motor mount tubing
Motor mounting stud on bottom of retainer is 5/16-18.
Accessory mounting hole on top of retainer is threaded 10-24.
M54E includes a 3/16 inch welded eye-bolt.

M75: for 75mm airframe and motor mount tubing
Motor mounting stud on bottom of retainer is 3/8-16.
Accessory mounting hole on top of retainer is threaded -20.
M75E includes a inch machine eye-bolt.

M98: for 98mm airframe and motor mount tubing
Motor mounting stud on bottom of retainer is 3/8-16.
Accessory mounting hole on top of retainer is threaded 5/16-18.
M98E includes a 5/16 inch machine eye-bolt.

M54 on AeroTech 54mm motor with
RouseTech threaded forward closure
M54 on Cesaroni Pro54 motor with
MC54delay/eject-closure adapter
M98 on Dr Rocket 98mm motor with
Dr Rocket threaded forward closure


Compatibility:
M75 and M98 have a 3/8-16 stud. The following motors either come with a 3/8-16 threaded hole in the forward closure or are available with a forward closure having a 3/8-16 threaded hole:
AeroTech, AMW, Cesaroni Pro75 and Pro98, Gorilla, Dr Rocket, Loki, RouseTech Monster Motors

M38 and M54 have a 5/16-18 stud. The following motors either come with a 5/16-18 threaded hole in the forward closure or an adapter is available from Aero Pack to match the 5/16-18 stud size:
AeroTech, AMW, Cesaroni Pro38 and Pro54, Gorilla, Dr Rocket, Loki, RouseTech Monster Motors

Note: The M54 will not fit Blue Tube 54mm tubing.

Contact us if you have a forward closure with a different threaded hole size.

M54 in Performance Rocketry Carbon-Fiber Mongoose 54 airframe booster section

AeroTech P/N 38FCRRA Aero Pack M38B M38BE (optional eye-bolt)
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Cesaroni Pro38 and Pro54 Delay/Eject-Closure Adapters

MC38 and MC54 adapters attach to top of delay/eject-closure on Cesaroni Pro38 and Pro54 motors.

Allows Pro38 and Pro54 motors to thread onto Aero Pack M38 and M54 bulkhead retainers in minimum diameter rockets.

 

Pilot pin on adapter seals small hole in delay/eject-closure and aligns adapter so it stays straight while screwing in using a 7/8" wrench or socket.

 

Adapters are reusable.

 

Precision machined from 6061-T6 and Type II red anodized.

 

Adapters are for retaining motors to Aero Pack bulkhead retainers only and not to be used for attaching recovery hardware.

 

The Aero Pack MC38 and MC54 adapters have been tested and approved by Cesaroni Technologies Inc.

 

 

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Extensions for Flying Shorter Motors in Rockets

with Minimum Diameter Bulkhead Motor Retainers

 

*Machined from 6061-T6 and red anodized

*Incorporates stainless threaded inserts at both ends

*Includes stainless threaded rod and 2 stainless jam nuts

*Attaches to motors forward closure

*Length of each extension is adjustable

*Extensions can be connected together for flying any length motor

*Available separately or in sets

 

5/16-18 Extensions for M38 & M54 3/8-16 Extensions for M75 & M98

 

M1E3.0 on Cesaroni Pro54 motor with MC54 adapter and M54 retainer

 

M1E3.0 on RouseTech 54mm extended forward closure and M54 retainer

 

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