38mm Components

A note about 38mm bay design - the tube diameter does not allow for much room to stack components, as you can in 54mm bay designs.  The 38mm line introduces a short battery sled which provides a way of holding and retaining a battery in an area next to a radial switch and an altimeter sled.  With some of the smaller altimeters, it is possible to do a custom long sled that incorporates a battery retainer instead of requiring a second sled for just the battery.  I have already designed and made available a long PerfectFlite StartoLoggerCF sled with a 9 volt battery retainer.  On an even smaller note, with a specific 300mah 2S LiPo battery, it is possible to stack a battery and an extra short sled (78mm long) for a compact 38mm bay that fits in a 6 inch long coupler tube.

Also, please make sure you order the correct 38mm coupler sized product. The parts that come in different sizes will have a choice of coupler tube size.  There is a thin wall size that fits Blue Tube 2.0 and there is a think wall size that fits MadCow's 38mm coupler tube.

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38mm CT 2 Post Deploy Float Bulkhead Kit

BHC2P-00300
The 2 post deploy float bulkhead is designed to be a sealed wall against deployment ejection gases when epoxied in place and allow for two contact connections to an electric match or igniter.
$2.95

38mm CT 2 Post Deploy Cap Kit

CC2P-00303
The CT 2 post deploy end cap is designed to be a sealed wall against deployment ejection gases when mounted in place and allows for two outside connections to an electric match or igniter.
$2.95

38mm Shock Cord Tie Plate Kit

SKTP-00308
The shock cord tie plate is intended to be used in a minimum diameter rocket to attach the electronics bay to longer shock cords needed for parachutes, nosecone, and fin can.
$2.45

38mm CT Deploy Mounting Ring Kit

DSC-00325
This ring provides three 4-40 threaded inserts for mounting caps and bulkheads which can be for deployment or such things as antenna connections and there are three 6-32 machine screw nuts at 120 degree intervals for mechanically securing the ring inside of a coupler tube if needed. Also, there are three additional threaded inserts for securing switchs and connector plates.
$2.45

38mm CT Radial Switch End Plate Kit

SWCR-00320
The radial switch end plate was designed to be part of an electronic bay to arm and disarm altimeters using an arming screw through the outside wall of a rocket.
$3.45

38mm CT End Plate Kit

EPC-00323
The end plate kit was designed to provide a sled mounting tab. The end plate can be mounted to any of the other 38m parts that has SMT Designs' standard hole pattern.
$1.45

Short Length 38mm 9 Volt Battery Sled Kit

SLB9V-00311
This is a short length sled that supplies a mount and retainer for a 9 volt battery for a 38mm CT coupler tube bay.
$3.45

Compact Length 38mm EasyMini Sled Kit

SLAMEM-20142
This is a compact length sled for the AltusMetrum EasyMini dual deployment altimeter. There is an optional battery holder available that can be added that sits underneath the sled.
$2.45

Standard Length 38mm EggTimer Quantum Sled Kit

SLETQM-03171
This is a standard length sled for the EggTimer Quantum dual deployment altimeter. There is an optional battery holder available that can be added that sits underneath the sled.
$3.25

Compact Length 38mm MissileWorks RRC2+ Sled Kit

SLMWC2P-20145
This is a compact length sled for the MissileWorks RRC2+ dual deployment altimeter. There is an optional battery holder available that can be added that sits underneath the sled.
$3.45

Standard Length 38mm MissileWorks RRC3 Sled Kit

SLMWC3-03146
This is a standard length sled for the MissileWorks RRC3 dual deployment altimeter. There is an optional battery holder available that can be added that sits underneath the sled.
$3.25

Compact Length 38mm StratoLoggerCF Sled Kit

SLPFCF-20141
This is a compact length sled for the PerfectFlite StratoLoggerCF dual deployment altimeter. There is an optional battery holder available that can be added that sits underneath the sled.
$2.45