I have a few KBA K-750 reloads. They take a 54-2550 case, but from what I can tell it's not an Aerotech case. What case(s) are these loads built for?
Kosdon
Kosdon by Aerotech (KBA).
That motor will fit in the AMW 54/2550 case. You'll have to get the whole motor assembly, with nozzle, bulkheads, etc. I think the only source for those is AMW/prox.com. I have a K-750, and also the K-1750 to fly, looking forward to both!
Phil L.
Have a new gold colored 54/2550 Kosdon motor casing that I can spare.
$90 plus actual shipping.
John
[QUOTE Loki 54/2000 will work, but case only.
I ended up just getting the AMW 54-2550 from Gloria. The only thing I need to do is verify the nozzle bore is 0.660in. The AMW website didn't have any information on the bore size. I got 5 of these K-750 loads super cheap and figure I can use the hardware for EX as well.
Ken has the nozzles and forwards. You can use a Loki fwd, and Ken show you a trick to use the Kosdon tracking smoke or Aerotech delays and a stack of o-rings. I keep them around so I can use any forward with any brand rrload.
If you use a KBA load in anything but a Kosdon or AMW case, or with mods like you describe, it becomes a TRA Research motor.
John,
I would be using the AMW casing, nozzle, and forward closure which should be certified as it's mentioned in the instructions. Thanks for the clarification though. It doesn't really matter much for me anyway as to whether I fly it as EX or certified.
If you use a KBA load in anything but a Kosdon or AMW case, or with mods like you describe, it becomes a TRA Research motor.
Since guessing he was already certified, just assumed everyone knew that. Not unless he is only flying at a NAR launch.
AMW nozzles
54/1050 0.4375
54/1400 0.484
54/1750 0.563
54/2550 0.656
54/1050 0.4375
54/1400 0.484
54/1750 0.563
54/2550 0.656
75/1700 & 75/2500 = 0.453"
75/3500 = 0.609"
75/6000 = 0.793"
75/7600 = 0.928"
I recommend greasing the liner well. They are thin/brittle liners (since AT doesn't have to warranty the case). I still have a K1750 left but I'm reluctant to use it. The other loads burned through the liner and scorched by AMW cases pretty bad. I've flown each of them at one time. The red M was in somebody else's case.
This is would make it a research motor I think, but you could try to soak the liner in Firefox's fire retardant liquid. Then, wrap the liner in pyro tape. Then grease. That should given sufficient protection against burn through.
The reload info sheet usually states the bore size of the nozzle, just in case it's not the same as AMW.
Throwing in a Loki nozzle would be a problem.
To add to what John said, it's a problem not just for the throat diameter in most cases (it is a .656 for the 54/2800), but the size/shape, liner step dimensions are all going to be different between Loki Research and others. Sure it can be "make" to work, but don't assume that it will work just because the throat is the right size, because it won't work without modification to something somewhere.
John, I can send you a sample of my convolute liners if you'd like to try the fit around your KBA grains. Send me an email if you'd like to try.
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