This timer can be used for ignition of sustainer motors in multistage rockets and
ignition of air-started auxiliary motors for added thrust, burn time, or special
It can also be used for accurately timed deployment of recovery devices in lieu of
the sometimes variable delay times associated with the motor's built-in delay grain.
Delay time can be easily set with 0.1 second resolution via an on-board pushbutton.
If your simulation suggests a 5.4 second delay, why settle for a 4 second or 7 second
delay from the motor?
The miniTimer4 uses a built-in accelerometer for initiating the delay time from main
motor ignition or burnout (user selectable). The accelerometer also allows the timer
to report maximum acceleration (in Gs) and speed (in MPH) after the flight.
The variable trigger threshold provides failsafe activation of the timer with virtually
any motor, ranging from low thrust motors (2G for 0.5 second) to fast-burn high thrust
motors (5+G for 0.2 seconds).
The only external items necessary are a battery, igniter, and on/off switch. Ignitercontinuity and battery voltage are reported via a built-in beeper, which doubles
as a post-flight locator siren.
The miniTimer4’s extremely high current capability allows the use of virtually any
igniter type, as well as massive multi-igniter clusters. When powered by a suitable
battery, firing a 50 engine cluster is easily achievable!