MaxQ
Tripoli 2747
I recently acquired this unit with the intent of having an air-start of outboard motors upon lift off, w/o worrying about getting adequate "G load" to trigger the unit’s air-start function.
What I wanted was the "Pull-Pin" feature that is advertised with this unit.
After reading the manual, I’m not sure I got this feature.
Well, maybe to be clear on this... I got the feature alright, but maybe not in a way that can be used in the manner I envisioned.
Here are quotes from the manual that have me wondering….
P.2 Systems Overview
“ The air-start stage is designed to actuate on “G-Switch” close, this is NOT configurable.
The air-start stage is designed to allow people to air-start a cluster of motors as part of this staging…”
The way this is worded, it leads me to believe that air-starting is available only for staging and not upon initial lift – off.
P.3 Operation Overview
“The G switch used by the X-FIST closes at 2.1 G (+/- 10%) Please keep this in mind for SLOW launches.
If your rocket will have less than 2.1G’s (+/- 10%) of acceleration Please configure your system for pull pin operation.”
Conversely, this statement leads me to believe otherwise – contrary to the previous statement that "airstarting is not configurable", - ie. the whole system could be set up for “pull pin” and not G switch when dealing with low G “Slow” launches…
Here is the link to the manual…
https://www.geocities.com/researchtriangle/lab/6584/X_FiST_MANUAL.pdf
The “X-FiST” is a G-SWITCH / PULL-PIN activated 5 stage pyro / event controller. The unit can be used for air-starting of motors, stage separation, booster seperation, parachute deployment and event staging. The "X-FiST" was designed for ease of use and high current capability with advanced staging rockets in mind.
What I wanted was the "Pull-Pin" feature that is advertised with this unit.
After reading the manual, I’m not sure I got this feature.
Well, maybe to be clear on this... I got the feature alright, but maybe not in a way that can be used in the manner I envisioned.
Here are quotes from the manual that have me wondering….
P.2 Systems Overview
“ The air-start stage is designed to actuate on “G-Switch” close, this is NOT configurable.
The air-start stage is designed to allow people to air-start a cluster of motors as part of this staging…”
The way this is worded, it leads me to believe that air-starting is available only for staging and not upon initial lift – off.
P.3 Operation Overview
“The G switch used by the X-FIST closes at 2.1 G (+/- 10%) Please keep this in mind for SLOW launches.
If your rocket will have less than 2.1G’s (+/- 10%) of acceleration Please configure your system for pull pin operation.”
Conversely, this statement leads me to believe otherwise – contrary to the previous statement that "airstarting is not configurable", - ie. the whole system could be set up for “pull pin” and not G switch when dealing with low G “Slow” launches…
Here is the link to the manual…
https://www.geocities.com/researchtriangle/lab/6584/X_FiST_MANUAL.pdf
The “X-FiST” is a G-SWITCH / PULL-PIN activated 5 stage pyro / event controller. The unit can be used for air-starting of motors, stage separation, booster seperation, parachute deployment and event staging. The "X-FiST" was designed for ease of use and high current capability with advanced staging rockets in mind.
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