TMT announces recertification of 52 Kosdon TRM motors

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2009 Archived News by Tripoli Motor Testing

Sunday, June 14, 2009

I am very pleased to announce official paperwork has been received from Dr. Frank Kosdon, as required, in the effort to return his previously certified motors/reloads to the member approved list.

The below listed Kosdon Enterprises, Truly Recyclable Motor (TRM) reloads were submitted and have been verified with archival TMT and NAR S&T documentation and are approved for immediate use by Tripoli members in good standing, and for all rocketry organizations granting reciprocal approval. These motors are certified on an interim basis for one year, ending on 30 June 2010, with full recertification to be granted for each reload kit through comprehensive TMT or NAR S&T empirical testing prior to that date.

Legend for all lines:

Official Name, TMT Designation, Class metric, Case OD, Length, Total NS, Average, BurnTime, Weight

S = Slow, F = Fast, DH = Dirty Harry

24 MM
H200S-13, H207, 55% H, 24, 383, 247.4, 207.4, 1.2, 117.8
H365F-15, H382, 62% H, 24, 383, 259.1, 381.7, 0.7, 122.3
H470F-P, H511, 84% H, 24, 489, 293.7, 511.2, 0.57, 151

29 MM
H155F-7, H172, 0% H, 29, 203, 160.8, 171.9, 0.97, 80
G40S-P, G37, NAR, 29, 206, 110.56, 37.35, 2.96, 48.4
G75S-7, G75, NAR, 29, 206, 142.11, 75.19, 1.89, 67.5
G65DH-11, G72, 71% G, 29, 206, 136.6, 71.6, 1.9, 93.6
H105DH-P, H116, 35% H, 29, 289, 216.3, 116.1, 1.87, 143.5
H70S-P, H73, NAR, 29, 291, 179.53, 73.28, 2.45, 81.7
H135S-11, H134, NAR, 29, 291, 170.09, 133.6, 1.73, 112
H255F-9, H261, 66% H, 29, 292, 266, 260.5, 1.03, 125.3
I385F-12, I439, 2% I, 29, 384, 326.3, 438.5, 0.77, 154
I560F-20, I551, 26% I, 29, 597, 404.2, 550.9, 0.73, 246.1

38 MM

I300F-P, I319, 22% I, 38, 254, 390.7, 318.8, 1.2, 181.2
I145DH-9, I145, NAR, 38, 258, 357.47, 144.72, 2.47, 182.7
I170DH-11, I167, 66% I, 38, 314, 433.21, 167.26, 2.59, 287
I220S-9, I224, 67% I, 38, 314, 534.4, 224.3, 2.4, 253.7
I420F-12, I438, 66% I, 38, 314, 532.9, 437.7, 1.2, 244.6
J280S-11, J297, 5% J, 38, 368, 671.1, 296.5, 2.27, 314.1
I255DH-10, I273, 88% I, 38, 368, 602.8, 273.4, 2.2, 353.3
J450F-10, J619, 5% J, 38, 368, 673.3, 619.4, 1.1, 308
J345S-18, J361, 19% J, 38, 476, 761.2, 361.8, 2.1, 380.5
J630F-20, J659, 23% J, 38, 476, 787.4, 659.5, 1.17, 374.5
J675F-20, J710, 27% J, 38, 476, 814.5, 710.5, 1.17, 386.6
J850F-21, J884, 41% J, 38, 576, 899.9, 883.8, 1, 450
J530S-10, J549, 55% J, 38, 737, 991.7, 549.4, 1.8, 561.7
J975F-23/P, J1018, 61% J, 38, 740, 1033.4, 1018.5, 1.03, 552.7

54 MM
I120DH-P, I120, NAR, 54, 251, 571.47, 119.81, 4.77, 393
I150S-6, I145, NAR, 54, 251, 632.37, 145.37, 4.35, 339
J340F-10, J433, 23% J, 54, 251, 787.3, 432.8, 1.88, 361.3
J180DH-13, J193, 38% J, 54, 326, 884.2, 193.4, 4.57, 605.5
J230S-8, J232, NAR, 54, 326, 945.89, 231.84, 4.08, 500.8
J480F-17, J523, 79% J, 54, 326, 1144.2, 523.2, 2.2, 522.5
J295DH-17, J306, 94% J, 54, 403, 1243.2, 306, 4.03, 792.8
K350S-9, K344, NAR 54, 403, 1317.62, 344.93, 3.82, 682
K700F-18, K692, NAR, 54, 403 1426.69, 692.57, 2.06, 682
L850S-12, L951, 3% L, 54, 727, 2643.2, 950.7, 2.8, 1265.4
L1860F-23, L2018, 3% L, 54, 727, 2643, 2017.6, 1.3, 1254.8

76 MM
J130S-15, J162, 75% J, 76, 244, 1118.1, 161.8, 6.9, 610
J250F-7, J274, 82% J, 76, 244, 1166.9, 274.4, 4.27, 596.5
K410S-13, J424, 89% K, 76, 368, 2420.4, 424.5, 5.7, 1195.9
K777F-10, K809, 97% K, 76, 368, 2524.9, 809.3, 3.13, 1168.7
L585DH-8, L609, 21% L, 76, 495, 3093.8, 608.6, 5.1, 1929.8
L630S-7, L644, 34% L, 76, 495, 3429.9, 643.6, 5.33, 1661
L1175F-30, L1205, 39% L, 76, 495, 3567.1, 1205.1, 2.97, 1667
L1500F-11, L1548, 85% L, 76, 622, 4730.5, 1548, 3.07, 2222.7
L820S-15, L845, 75% L, 76, 623, 4469.9, 845.2, 5.27, 2222.7
M1130S-P, M1170, 12% M, 76, 775, 5763.6, 1169.5, 4.9, 3069.1
M2240F-P, M2350, 16% M, 76, 775, 5947, 2349.8, 2.55, 3057.8
M1015DH-P, M1059, 3% M, 76, 781, 5282.7, 1059.2, 5, 3547
M1845S-P, M1952, 46% M, 76, 1038, 7512.8, 1952.2, 3.83, 3882.2
M3200F-P, M3202, 48% M, 76, 1041, 7565.7, 3201.6, 2.35, 3895.8

There are a few additional motors to add to this list, but are withheld until further verification can be made of the cert data. If there are any questions about the list or a possible omission/correction, reply off-list.

H. Paul Holmes
Chairman, Tripoli Motor Testing

Reader comments:

#1 Re: Article: TMT announces recertification of 52 Kosdon TRM motors

Lord help us all...Hide the women and children...24MM H'S!!!!! AAAAHHHHHHH!!!!

DAllen on 06-14-2009 09:17 PM

#2 Re: Article: TMT announces recertification of 52 Kosdon TRM motors

Am I reading this right? 24mm H motors! Now I see why people loved these motors so much (I wasn't into rocketry yet when Kosdon saw it's gory days... I was less than ten years old).

RedMaxFlyer on 06-14-2009 09:17 PM

#3 Re: Article: TMT announces recertification of 52 Kosdon TRM motors

I'm assuming that these only fit Kosdon cases. Are they available anywhere, anymore?

The Fatman on 06-14-2009 11:18 PM

#4 Re: Article: TMT announces recertification of 52 Kosdon TRM motors

I think Ken Allen with Performance Hobbies has the motors.
https://blastzone.com/perf...ies/store.asp?groupid=56

skycopp on 06-15-2009 09:34 AM

#5 Re: Article: TMT announces recertification of 52 Kosdon TRM motors

Congrats to Frank. I believe Jack at What's Up Hobbies will eventually be stocking some of them.

Garoq on 06-15-2009 10:43 AM

#6 Re: Article: TMT announces recertification of 52 Kosdon TRM motors

Still KICKING myself for not buying some cases cheap back when not even a hint of this was in the air.

UncleVanya on 06-15-2009 11:24 AM

#7 Re: Article: TMT announces recertification of 52 Kosdon TRM motors

One really cool thing about the 38mm 640ns case is that you can do a level one and level two with the same motor case. Just buy a different reload, this is great for the person that is on a budget.

Darin

MACH5 on 06-15-2009 05:40 PM

#8 Re: Article: TMT announces recertification of 52 Kosdon TRM motors

Cool beans, that enables my dad's L2 and L3 to be a go on Kosdon motors!

UPscaler on 11-13-2010 04:22 PM

#9 Re: Article: TMT announces recertification of 52 Kosdon TRM motors

Quote:

"The below listed Kosdon Enterprises, Truly Recyclable Motor (TRM) reloads were submitted and have been verified with archival TMT and NAR S&T documentation and are approved for immediate use by Tripoli members in good standing, and for all rocketry organizations granting reciprocal approval. These motors are certified on an interim basis for one year, ending on 30 June 2010, with full recertification to be granted for each reload kit through comprehensive TMT or NAR S&T empirical testing prior to that date."

Upscaler, you may want to have your Dad check with the local club first. This is an old artilce, and although tmt has extended the interim certification for all 52 Kosdon motors after the 6/30/10 date came and went, no anouncement has been made about any Kosdon motor being retested for certification before or since June 30th, 2010. It would seem that tmt decided to bend the rules and certify them anyway. You may want to read the last sentence of this "Official Statement" again, just to be safe. Apparently they've since change their mind on certification.

SmokinJoe on 11-13-2010 09:51 PM

#10 Re: Article: TMT announces recertification of 52 Kosdon TRM motors

Dave at Red Arrow also stocks many of these. I think Ken at Performance is the only one I know of stocking the 24's.

I have the 29/150, 38/390 and the 38/640.

Scott, this reprint has the old cert data on the motors. This was not the latest release from TMT reinstating them in lieu of the retesting done over the last 18 months which coincidentally align with this press release as well.

Anyways, check with your TRA club and make sure they are fine with it at their events. They are not usable at NAR insured events, yet anyways, so be smart and don't fly them there. Don't take advantage of an RSO that is not in tune with current events and certs. If you fly them solo, make sure you are covered by your own insurance of some sort.