I recertified at NARAM last year using an H-180 retained by an Estes 29MM plastic retainer. There are fewer threads engaged with the high power reload casings but there were no problems. Perfect flight. Perfect recovery.
for use with the hobbyline 29/40-120 they work fine. the 'hi-power style' 29mm has a thicker aft closure which doesn't allow the cap to thread on as far, has caused some concern(although I haven't heard of anyone losing a case yet).
There was a failure at a DARS launch last year with an Aerotech 29mm high power case. While the motor was found later, it didn't return with the rocket.
Does anyone know of the root cause of the failure?
estes with a 29/40-120
A pair of estes right after firing a pair of I200W's, (and multiple prior F/G flights)
Won't get more more abuse than that. I have no hesitation using them for anything.
Estes retainers are not a good choice for Aerotech 29 mm High Power cases. The rear closures are thicker and because of this, not enough threads are engaged to be reliable in my opinion (works fine for for Hobby Line cases). Use Aerotech's new screw on retainer or an Aeropack retainer (or retro-fit kaplow clips).
Okay Terry, Im taking your advise and ordering the Aerotech Retainer for my Mirage. The Estes will not go to waste though. I have plenty use for them. I wanted the aluminum Aerotech one anyway and I want no doubt of reliability in the back of my mind at launch.Estes retainers are not a good choice for Aerotech 29 mm High Power cases. The rear closures are thicker and because of this, not enough threads are engaged to be reliable in my opinion (works fine for for Hobby Line cases). Use Aerotech's new screw on retainer or an Aeropack retainer (or retro-fit kaplow clips).
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