K990=54/2800 RELOAD
It was a copy and paste from Paul. Typos happen. From the post:
K850DM-16A
This motor is a 54 MM-2560 case reload in the Dark Matter propellant. Specifics are as follows:
Total Impulse 1869.13 NS
Max Thrust 1094.56 N
Average 922.6 N
BurnTime 2.028 Seconds
TMT Metric K922 (45% K)
Total Weight 2041 G
Propellant Weight 1224 G
K990DM-14A
This motor is a 54 MM, 24 long Single Use motor, also in the Dark Matter propellant. Specifics are as follows:
Total Impulse 1867.13 NS
Max Thrust 1075.85 N
Average 931.9 N
BurnTime 2.04 Seconds
TMT Metric K931 (45% K)
Total Weight 2109 G
Propellant Weight 1224 G
Per above, the K850 is a reload for the 2560 case while the K990 is a single use DMS motor likely using the same case as the L1000W DMS. A difference of 2 NS between the two, or .012 s in burn time, or 9.3 N of average thrus - virtually identical. The difference in classification (K850 versus K990) would be product differentiation I would imagine (L1000W DMS versus L1090 RMS, among others, although they didn't do that for the H550ST DMS/RMS for some reason).
Regarding which one is the actual DMS/RMS version? I'll defer to whatever Charlie said .
I believe I flew the first ever certified K2050 in my Nike Smoke yesterday at TCC October Skies -
It was spectacular. More later.
How large is the rocket?
I believe I flew the first ever certified K2050 in my Nike Smoke yesterday at TCC October Skies -
It was spectacular. More later.
I believe I flew the first ever certified K2050 in my Nike Smoke yesterday at TCC October Skies -
It was spectacular. More later.
Wow! That rocket and flame look like a SAM test from the '50s!
Greg
G80 FWL!! Ross Dunton used to sell these for $9.99 and they would not last. Fantastic little motor.....
I can't be the only one whose fingers are itching for an updated price list...
For what motor?
Take your pick! The 54mm DM motors, the new offerings for the 24/60 case or the 29/40-120 case, the K2050ST... many new and interesting loads!
K2050-$112.99
K400classic-$129.99
....
Used to by 20 or more every time they were offered!
Same here! Wish I had bought tons more.
will have to try the Super Thunder next if its not a plugged motor.
Can some one remind me how to plug a motor using grease? Is this considered modifying the motor?
I use a plugged forward closure for my plugged reloads. You just install the delay grain as usual. If you are using an open forward closure, you assemble the delay as you would normally but put grease on the end of the delay grain facing the charge well, and leave the well empty of course. I think some folks fill the ejection well with grease, but I don't.
Using a plugged reload in a motore case with a plugged fwd closure is not considered modification. Not sure about using a plugged motor reload with an standard open closure.
Speaking of the L1000- are the thrust rings ok on these now? Thinking of picking one of these up at some point.
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