24MM PLUGGED THREADED FORWARD CLOSURE - AeroTech

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Tarantula

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Does anyone know of a 3rd party that makes a 24MM PLUGGED THREADED FORWARD CLOSURE for 24mm AT Motor Cases?

AeroTech currently offers 29mm and up.

I am working on a 24mm Minimum Diameter design, and would like a more positive motor retention than tape.

TNX
 

dhbarr

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Does anyone know of a 3rd party that makes a 24MM PLUGGED THREADED FORWARD CLOSURE for 24mm AT Motor Cases?

AeroTech currently offers 29mm and up.

I am working on a 24mm Minimum Diameter design, and would like a more positive motor retention than tape.
I've run my 29mm with a tiny bolt sticking up through a nut in the charge well, worked a treat. Don't forget to take the bolt out between firings, it'll corrode up pretty quick.

EDIT: Slapped one into the 24/40, which I'd never actually tried before.
 

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Tarantula

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Thanks. I have ordered an AT 24/60 case. I'll try your method when it arrives.

I have a 29mm Dr. Rocket case, and the passfire hole appears to be way smaller than your 24mm AT.

For grins, I tried some 4-40 threaded rod and it fits loosely in the passfire hole in the 29mm Dr. Rocket closure. I bet #6 would be a better fit but I don't have any to try. I have some #8 and it is too large.

What size stud is that in your 24mm AT closure?


29mm.Dr.Rocket.png


29mm.Dr.Rocket-4-40.png
 

dhbarr

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Thanks. I have ordered an AT 24/60 case. I'll try your method when it arrives.

I have a 29mm Dr. Rocket case, and the passfire hole appears to be way smaller than your 24mm AT.

For grins, I tried some 4-40 threaded rod and it fits loosely in the passfire hole in the 29mm Dr. Rocket closure. I bet #6 would be a better fit but I don't have any to try. I have some #8 and it is too large.

What size stud is that in your 24mm AT closure?


View attachment 474795

View attachment 474797
4-40 at a guess. It's just a random threaded object from the parts drawer.
 

waltr

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Measure the hole diameter with calibers, or use drill bits to find a 'Go/no go' diameter.

It is also possible a Metric size screw will fit better.
 
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