Kosdon TRM Motors ??

[deandome]

Details below & on Rocketry Planet, but here are the questions.

What are TRM motors..in particular, the 24 & 29mm sizes? Is this system/hardware new, or are these new reloads for old Kosdon/AMW-type hardware (like the Aerotech/Kosdon motors)? Is all this Kosdon...he actually makes & sells them...or is it Kosdon/Aerotech (I can't find any Kosdon Enterprises website)?

I thought Kosdon motors were snap-ring, but I've never seen snap-ring 24 or 29mm stuff. It sounds kinda like these are new loads for an old hardware system..but I can't imagine that they''d rely on that; they'd have to sell new hardware, too.

What gives?



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

[troj]

What are TRM motors..in particular, the 24 & 29mm sizes? Is this system/hardware new, or are these new reloads for old Kosdon/AMW-type hardware (like the Aerotech/Kosdon motors)? Is all this Kosdon...he actually makes & sells them...or is it Kosdon/Aerotech (I can't find any Kosdon Enterprises website)?

Kosdon motors have been around for a long time. AMW started out life as Kosdon East, before getting their own motors certified, but keeping basically the same hardware.

I thought Kosdon motors were snap-ring, but I've never seen snap-ring 24 or 29mm stuff.

Nothing new.

Heck, SkyRipper has 29mm snap ring hybrids.

-Kevin

[deandome]

Thanks..that's kinda what I figured...AMW and/or Gorilla hardware will work w/38mm & up.

But like I said, I can't see coming out with all the 24 & 29mm stuff unless someone plans on selling new hardware in those sizes...there's only so many "nostalgists" out there, and people would love an alternative to the 24mm AT hobbyline options.

Any word on that?

[MarkII]

Performance Hobbies has most of the hardware and quite a few of the reloads. No delay kits right now, though.

A 24mm (1") H!!!

MarkII

[5x7]

Performance Hobbies has most of the hardware and quite a few of the reloads. No delay kits right now, though.

MarkII

Note that Performance hobbies lists the small motors as 1". The TMT announcement lists them as 24mm. However it was always my understanding that they really are 1", so will not fit in a 24mm tube.

[daveyfire]

(I can't find any Kosdon Enterprises website)

Frank has been around for a long time. I don't have accessible my old copy of HPR with the pictures of the first TMT session in it (I think it was Jan/Feb 1992? the one with Lovett Reddick and his Electronic Bruiser on the cover...) but Frank's there static firing an M3700. AHPRA has a good writeup on their website about one of Frank's more famous motors: http://www.ahpra.org/o10k.htm

I scanned the latest Kosdon catalog a while back. It's still the latest one. You can always call Frank directly with questions, too.

[THarrison]

I would encourage all the curious new guys to call Ken at Performance and give Kosdon a try... you won't be disappointed. While I am strictly an EX flier now, this is the one manufacturer that can get me to buy commercial.

Todd Harrison

[MarkII]

Let me repeat: a 25.4mm dia. H! Put that in your Eggscaliber!



MarkII

[deandome]

Wouldn't that be kinda hard, seein' that the MM is 24mm?

Let me repeat: a 25.4mm dia. H! Put that in your Eggscaliber!



MarkII

[MarkII]

Wouldn't that be kinda hard, seein' that the MM is 24mm?

Toss motor tube, engine block, engine hook and centering rings. Substitute a length of ST-10 for the motor tube and use Semroc CR-10-13's to center it in the airframe. You could argue that these components would be too light for the motor, but then, so is the rest of the kit.

Or else just substitute the kit of your choice that would be absurdly over-powered by a Kosdon TRM H200-250. A Big Daddy, perhaps? A Liquidator? A Blue Ninja? You would have to customize any existing kit, because no one makes one with a 1" diameter motor tube. But this is a side issue. (Details, pesky details... )

MarkII