The cato to end all catoes!!!

[jsdemar]

So you need your case shortened and nozzle throat opened...let me know!

Speaking of thread policing... That is a bad idea. Once a case has gone through stress and over-heating, it's not worth wasting the money to re-use it. Even if you put calipers on it, verify dimensional integrity, it still has lost its tempering. New aluminum is cheaper than a damaged rocket.

 

[FredA]

should be a #52, and it looks like it is a #48

This can be a pretty large step in peak pressure....could be the full reason [as in causing the liner failure] or just the reason for the rapid disassembly once the case was marginalized by the hot spot.

Good sleuthing to find the nozzle switch!

 

[patelldp]

Speaking of thread policing... That is a bad idea. Once a case has gone through stress and over-heating, it's not worth wasting the money to re-use it. Even if you put calipers on it, verify dimensional integrity, it still has lost its tempering. New aluminum is cheaper than a damaged rocket.

Completely agree. I bet the rear snap ring groove is ballooned slightly.