AT 270

[new2hprParticipant]

Perhaps he was meaning it was heavy relative to the SU K250? That is probably very true.

I’ve been eyeing the motors in that range K250,270,350 for my Competitor 3 L2 flight. Gotta build the thing first, tho.

Ken

[Anonymous]

Indeed, the K350 is heavier relative to the Aerotech K250. The Loki load is also a good deal longer, coming in at nearly 29″. Rockets that I built for the L330 are too short for the Loki K350, and due to design issues, I have some real challenges there. All I can do is hang the motor out the aft end – which is exactly what I plan to do. It seems like a cheesy way to go, though 😳

The good news on the K350 is that you have a much better anchor point up top, and you get rid of the medusa nozzle. I am not a fan of medusas (that would be kindling for another thread). The K350 is a fine load, and I look forward to flying it. I just don’t think it is “the” load for a K altitude attempt.. and sadly, I don’t see anything else that even comes close. The new K250 is 2x the cost and ~450NS less total impulse.

[Doug GerrardParticipant]

All I can do is hang the motor out the aft end – which is exactly what I plan to do. It seems like a cheesy way to go, though

Hey! BDCR flew a number of times that way. It was designed for the AT M1315 but someone got it in there mind that I should fly the M2200 and M2500 from AMW. Since motor retention was from the forward end, I just added a 9 inch piece of tubing. I guess it did look kind of strange but it flew fine.

Doug

[Anonymous]

Doug, that is good to know – It looks OK in Rocksim, I’ll check the CG/CP on game day.

Wayne Mrazek – Hybrid Pioneer and all around AWESOME guy flew “Quadrophenia” – a 4xM cluster – with all of them hanging out.

I am assuming most have heard of Wayne’s untimely passing a few weeks ago? Wayne was a great man in and out of rocketry and he will be missed. Sometime around the campfire I’ll tell a cool story about him. Awesome guy.

[Doug GerrardParticipant]

Always good to check the CP/CG with a mod like that. Mine was not minimum diameter and had over sized fins. I would like to hear the story about Wayne. John, are you going to be in CO for NCR’s launch next month? I am going to make every effort to be there.

Doug

[JetMechQC]

Will the 54/2560 case fit the firestorm 54?

[Author]

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