1 inch Kosdon goodness

[3stoogesrocketry]

Well as the title says , its a Frank Kosdon throwback .

Right to left , 2 x 35ns , 1 x 105ns , 1 x 310 .

Next week im taking delivery of 70 fast loads for these beauties ( 40XE40 20XG140 10XH470 ) and I will post pictures of them when I get them .

 

[5x7]

I am interested in closeups of the delay element and delay parts.

 

[3stoogesrocketry]

A full review is coming. The 105ns motors nozzle is unlike any ive ever seen

 

[5x7]

I think I have a 105 nozzle, In what way is it different?

 

[Cameron Anderson]

There is no way these are vintage loads, are they?

 

[3stoogesrocketry]

There is no way these are vintage loads, are they?

They are vintage loads.

 

[3stoogesrocketry]

I think I have a 105 nozzle, In what way is it different?

 

[5x7]

Yes, that’s odd, can you tell what the throat dia on that one is?

 

[3stoogesrocketry]

Picked up a few more goodies today .

20 E40's
10 G140's
4 H470's

 

[Theory]

really miss the Kosdon motors

i have fond memories of them

 

[AdAstraPerAspera]

Do you know what size those snap ring are? I have one of these cases and a few loads, but no snap rings.

 

[green dragon]

Good stuff - nice find.. definately vintage Kosdon motors, I remember talking to Frank when he was raving about the really cool ziplock bags he'd gotten .
I still have quite a few of those myself.

also, the 1" od motors use .875" snaprings.

 

[3stoogesrocketry]

Good stuff - nice find.. definately vintage Kosdon motors, I remember talking to Frank when he was raving about the really cool ziplock bags he'd gotten .
I still have quite a few of those myself.

also, the 1" od motors use .875" snaprings.

Here's a little project I'm working on . SU carbon fiber case bonded . 22mm ID 24mm OD . This is a low pressure motor. I want to build a SU H470 carbon dart.

 

[Neutronium95]

Here's a little project I'm working on . SU carbon fiber case bonded . 22mm ID 24mm OD . This is a low pressure motor. I want to build a SU H470 carbon dart.

That is insane in the best possible way.

 

[AdAstraPerAspera]

also, the 1" od motors use .875" snaprings.

Thanks for the info.

 

[tfish]

Here's a little project I'm working on . SU carbon fiber case bonded . 22mm ID 24mm OD . This is a low pressure motor. I want to build a SU H470 carbon dart.

I have some of these reloads, cases and nozzles. I'm having a hard time figuring out what nozzle throats go with what reloads..

H225
H135
H470
H200
I420

Tony

 

[hball55]

I have some of these reloads, cases and nozzles. I'm having a hard time figuring out what nozzle throats go with what reloads..

H225
H135
H470
H200
I420

Tony

Tony, you need that link you once sent me? The I420 uses the .328 nozzle 38/510 case.

below?


AMW / Kosdon Nozzle & Liner Index Chart


Updated: July 4, 2010

Motor Size	Nozzle Throat Diameter	Liner Length	Casing Length
38mm
38mm x 390 Ns Kosdon	0.281”	7.875”	9.80"
38mm x 390 Ns AMW
38mm x 510 Ns Kosdon	0.328”	9.00”	12.35”
38mm x 640 Ns Kosdon	0.365"		14.55"
38mm x 640 Ns AMW	0.370”	12.5835"	14.55”
38mm x 800 Ns Kosdon	0.438”		18.73”
38mm x 900 Ns Kosdon			22.67”
38mm x 1116 Ns Kosdon			29.11”
54mm
54mm x 330 Ns	0.281"
54mm x 700 Ns	0.359"
54mm x 1050 Ns	0.437”	10.470”	12.85”
54mm x 1400 Ns	0.485”	13.550”	15.85”
54mm x 1750 Ns AMW	0.563”	16.900”	19.35”
54mm x 2250 Ns Kosdon	0.5938”	20.063”	22.48”
54mm x 2550 Ns	0.656”	26.00”	28.66”
54mm x 3300 Ns Kosdon	0.875”	~39.00”	43.85”
76mm
76mm x 1700 Ns	0.453”	8.350”	12.18”
76mm x 2500 Ns	0.453”	10.750”	14.50”
76mm x 3500 Ns	0.5937”	15.750”	19.60”
76mm x 4800 Ns	0.750”	~21.250”	24.50”
76mm x 6000 Ns	0.7813”	27.250”	30.90”
76mm x 7600 Ns	0.928”	37.000”	40.90”
76mm x 10,000 Ns		51.75”	55.70”
98mm
98mm x 11,000 Ns AMW	.926"		34.25"
98mm x 17,500 Ns AMW	1.125"	43.50”	47.25”
98mm x 16,000 Ns Kosdon

Red is a not confirmed





Update: Dec 11, 2012;


I fixed some date pertaining to the 38mm 390 & 640
motors; Made a separate entries for Kosdon & AMW do to apparent
differences..


Nozzle data was pulled from the TMT testing data on the KBA
I170 (390 case) & J500 (AMW 640 case)


Added Kosdon 38mm 800, 900, & 1116 Ns & 98mm x 16,000
Ns hardware to the list

 

[crossfire]

Picked up a few more goodies today .

20 E40's
10 G140's
4 H470's

Who would have had so many old motors from Frank? Frank lives on

 

[jsdemar]

I have some of these reloads, cases and nozzles. I'm having a hard time figuring out what nozzle throats go with what reloads..

H225 (4 gr x 2" fast???) = 0.261"
H135 (1 1/8" motor? ... 5 gr slow) = 0.290"
H470 (4 gr x 4" fast) = 0.377"
H200 (3 gr x 4" slow) = 0.328"
I420 (1 1/2" motor? ... 4 gr fast) = 0.323"

 

[3stoogesrocketry]

Who would have had so many old motors from Frank? Frank lives on

That's just the fast 25mm loads. I also have 12 250ns H200 Slow loads and 6 250ns H105 Dirty Harry loads. I met Frank at LDRS 19(?) At Orangeburg SC and he personally assisted in building my first Kosdon reloads. I picked up most of my stuff from Ken Allen or Dave Triano

 

[crossfire]

That's just the fast 25mm loads. I also have 12 250ns H200 Slow loads and 6 250ns H105 Dirty Harry loads. I met Frank at LDRS 19(?) At Orangeburg SC and he personally assisted in building my first Kosdon reloads. I picked up most of my stuff from Ken Allen or Dave Triano

Any J1500s
I flew my Shadow Raven with a Kosdon a 38mm J1500. It really did leave pad like a rifle shot. So fast. It makes VMAX look slow. There is a video on MWP 9 2010 video. You can hear Wildman saying he never seen rail wipe like that.

 

[3stoogesrocketry]

Any J1500s
I flew my Shadow Raven with a Kosdon a 38mm J1500. It really did leave pad like a rifle shot. So fast. It makes VMAX look slow. There is a video on MWP 9 2010 video. You can hear Wildman saying he never seen rail wipe like that.

I lost my RavenEx ( duel deployment version ) on a J1500 down at MDRA for the mach madness event . It was mach 2 plus going up , ad unfortunately close to mach coming back in. We walked the semi fresh plowed field in one 20 foot diameter circle but never found the hole. Finding a original J1500 is going to be hard. The 25mm H470 I have go in a almost 21 inch long case and burn in .6 of a second .

 

[tfish]

Tony

 

[tfish]

I have some of these reloads, cases and nozzles. I'm having a hard time figuring out what nozzle throats go with what reloads..

H225
H135
H470
H200
I420

Tony

H225 H255 F 29mm x 11.44" case 0.290 noz
H135 S 29mm x 11.44" case 0.290 noz
H470 F 1" x 19.25" case 0.3770" noz (special Bates grains)
H200 S 1" x 15.06" case 0.3280 noz
I420 F 38mm x 12.35" 0.3230

bonus info: "J1500
J975 J 38mm x 29.11 0.5940 noz 4-6.25"


Tony

 

[cwbullet]

Great loads. Are they EX now?

 

[AdAstraPerAspera]

Great loads. Are they EX now?

I believe there is a provision for flying previously certified, out of production motors at commercial launches...

 

[tsmith1315]

Comment on NAR-TMT combined motor list from: https://www.tripoli.org/content.aspx?page_id=22&club_id=795696&module_id=494525

"OOP motors are NOT “de-certified”. You may continue to use them until supplies are exhausted. "

 

[mrwalsh85]

It is also my understanding that DE Certified motors are not considered fair game for launches. For instance, there is an Ellis Mountain J that is known as the "Boom Stick"... I don't remember the designation. There were enough incidents that I think this motor was decertified. I'm sure there are other examples.

 

[CoyoteNumber2]

Comment on NAR-TMT combined motor list from: https://www.tripoli.org/content.aspx?page_id=22&club_id=795696&module_id=494525

"OOP motors are NOT “de-certified”. You may continue to use them until supplies are exhausted. "

Interesting. The Combined Motor List linked on that page states:

This list may indicate that a motor is "expiring" on a given date. This means its certification for general use will be withdrawn on the indicated date. The expiration date is three years after the motor is deemed de-certified, to give flyers time to use up any motors they have already purchased. After the expiration date passes, the motors can no longer be used.

I wonder which is correct.

It is also my understanding that DE Certified motors are not considered fair game for launches. For instance, there is an Ellis Mountain J that is known as the "Boom Stick"... I don't remember the designation. There were enough incidents that I think this motor was decertified. I'm sure there are other examples.

J228. Somehow I got lucky - all five of mine worked great.

 

[tsmith1315]

I wonder which is correct.

Both. That's why the NAR-TMT combined motor list emphasizes that "OOP motors are NOT de-certified."

It's only de-certified motors that expire.