View Full Version : AMW/Pro-X loads
Wiley
25th January 2011, 12:24 AM
CTI sells 'em so people must be flying them.
I'm also willing to bet that some of these people are members of this forum :D!
I've read the instructions for the 54mm AMW/Pro-X reloads on CTI's site, which are supposed to work for all sizes of 54's.
I see that the instructions call for two nozzle washers on top of the foreward bulkhead. I find this rather strange.
Do any of you previously mentioned folks know if the actual reloads assemble in the same manner as they do on the AMW/Pro-X site (here's the link for the instructions http://www.amwprox.com/documents/54-2550-REV3.pdf)?
Furthermore, what does the Tamed Tiger propellant look like? Particularly, how would it look in a 54-2550 (L985)?
cbrarick
25th January 2011, 12:34 AM
The second washer is just a spacer as the pro-x loads are just a tad shorter. I've not flown that one yet, but plan to. I've only flown skids and black bears. Ive got a K455 tamed tiger in my reload box waiting for the HP season to start....
tfish
25th January 2011, 01:15 AM
I'm only seeing 1 noz washer..
http://www.amwprox.com/documents/54-2550-REV3.pdf
Here is a video on how to put the AMW/Pro X 54mm motors together.
http://www.youtube.com/watch?v=GVCAA9X_vcI
Tony
Wiley
25th January 2011, 01:49 AM
Actually, the hardware description calls for two washers and the text indicates that you should install "the two nozzle washers..." on top of the foreward bulkhead.
I knew the double washers must be to take up space, what I didn't understand is why CTI didn't make the propellant stack two washers taller :wink:.
blackjack2564
25th January 2011, 01:50 AM
It can be confusing.
If you have nozzle washers, use 2.
There is a thicker washer available from CTI dealers,just for this, if you have that use 1.
Basically as in any snap ring case, you are trying to eliminate excess slop, and trying to keep the liner tight to the Nozzle & forward closure .
The CTI loads liners are a tad shorter, hence the washer/spacer solution.
I have used them both.
Wiley
25th January 2011, 02:03 AM
Thanks blackjack!
Being a premier motor connoisseur (a good thing in my book :D) have you used any of CTI's Tamed Tiger motors, or have you seen them fly?
Perhaps, try giving it an overall coolness factor from one to ten, with 1 representing BP and 10 representing White Lightning :wink:.
tfish
25th January 2011, 03:06 AM
If 10 is White Lightning. Why not just use white lightning? They make a white lightning load for your case.
http://www.thrustcurve.org/motorsearch.jsp?id=477
http://www.aerotech-rocketry.com/customersite/resource_library/Instructions/KBA_A-C_Instructions/54-2550_kba_ac_in_k08101.pdf
http://www.aerotech-rocketry.com/customersite/resource_library/kba_assy_dwgs/54mm_kba_ac/54-2550_k750w-p_assy.pdf
Tony
Wiley
25th January 2011, 03:24 AM
Mainly because of (low thrust) + (oddrock)(enormous)= bad math. :)
I see on the AMW/Pro-X site that they appear to be selling a different 54mm nozzle washer for every size of 54mm case. Is this true, or are they all the same size?
If they aren't, do I still use two 54-2550 washers with a 54-2550 motor, or will they take up too much space (I'm assuming that the bigger the case, the thicker the washer gets)?
blackjack2564
25th January 2011, 04:28 AM
Thanks blackjack!
Being a premier motor connoisseur (a good thing in my book :D) have you used any of CTI's Tamed Tiger motors, or have you seen them fly?
Perhaps, try giving it an overall coolness factor from one to ten, with 1 representing BP and 10 representing White Lightning :wink:.
I don't look at it like that.
If you fly long enough you will learn to maximize the load to what you are trying to accomplish when flying.
Studying thrust curves & applying that to your rockets size and weight, will determine your performance. That and what you are tying to do: Fly for altitude, hammer it hard for speed or just enjoy a nice "see it all flight"
Conditions dictate what to use also. Same rocket flown in low wind goes great on longburns, but in higher winds a motor with more punch is needed.
A given case will hold only so much propellant, it's what it is & how it burns, determines performance.
For example, pretty much across the board you sacrifice 15-25% performance when flying sparkies. Yes they look cool, but just about any other load for the same case, same cost will out perform it, and give higher flights.
This takes time and study to get it, more than I'm willing to type here.
Yes I've flown the TT , a more relative rating for me would be performance not cool facter, regarding that I would give it a 5, behind White Tiger & Scalded Tiger. ST really kicked but, almost like V-max.
I like to match propellant to the rocket & what I am trying to do. Color and names take the backseat to performance.
blackjack2564
25th January 2011, 04:43 AM
Mainly because of (low thrust) + (oddrock)(enormous)= bad math. :)
I see on the AMW/Pro-X site that they appear to be selling a different 54mm nozzle washer for every size of 54mm case. Is this true, or are they all the same size?
If they aren't, do I still use two 54-2550 washers with a 54-2550 motor, or will they take up too much space (I'm assuming that the bigger the case, the thicker the washer gets)?
There is so much going on with that, I can't keep up. I have flown the 1050, none used, 1750 1 used, 2550 2 used, with just about every propellant. I can make any of them fit.
Just make sure to have someone who's done it show you how. The washers aren't that much different looking.
They all have their place.
tfish is correct.... the KBA loads are the best bang for the buck across the board for the 2550 case. I've flown all of them, my favorite being the K-750.
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