AeroTech Delays

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This is an update to the listing titled "Aerotech Delays" submitted by Ted Cochran some time ago. This listing includes coverage for the newer Redline motors and a motor by motor matrix for all Aerotech high power reloads. I ran it by Craig Christiansen at RCS/Aerotech and the response was "This looks good".

AEROTECH RDK & RDK+ DELAYS
June 29, 2004

Motor	Hardware	T. Imp.	Delay	RDK KIT	RDK+ Kit
29 MM Hardware
F37W	29/60	50	6, 10, 14	02, 03, 04	03+, 05+, 07+
F62T	29/60	50	6, 10, 14	01, 02, 03	02+, 04+, 06+
G54W	29-100	90	6, 10, 14	02, 03, 04	03+, 05+, 07+
G104T	20/100	90	6, 10, 14	01, 02, 03	02+, 04+, 06+
G75J	29/180	155	6, 10	03, 04, XX	05+, 08+, XX+
H165R	29/180	167	6, 10, 14		01+, 18+, 06+
H128W	29/180	175	6, 10, 14	02, 03, 04	03+, 05+, 07+
H238T	29/180	175	6, 10, 14	01, 02, 03	01+, 04+, 06+
H97J	29/240	200	6, 10	03, 04, XX	05+, 08+, XX+
H210R	29/240	220	6, 10, 14		01+, 04+, 05+
H180W	29/240	230	6, 10, 14	02, 03, 04	03+, 05+, 07+
H220T	29/240	220	6, 10, 14	01, 02, 03	01+, 04+, 06+
H268R	29/360	311	6, 10, 14		01+, 18+, 05+
I200W	29/360	330	6, 10, 14	02, 03, 04	03+, 05+, 07+
38 MM Hardware
H73J	38/240	180	6, 10	08, 15, XX	14+, 16+, XX+
H148R	38/240	218	6, 10, 14		09+, 11+, 13+
H123W	38/240	230	6, 10, 14	07, 06, 08	11 +, 12+, 15+
H242T	38/240	230	6, 10, 14	05, 07, 06	09+, 10+, 12+
H112J	38/360	280	6, 10	08, 15, XX	14+, 16+, XX+
I218R	38/360	330	6, 10, 14		09+, 11+, 13+
I161W	38/360	350	6, 10, 14	07, 06, 08	11+, 12+, 15+
I357T	38/360	350	5, 10, 14	05, 07, 06	09+, 10+, 12+
I154J	38/480	360	6, 10	08, 15, XX	14+, 16+, XX
I285R	38/480	414	6, 10, 14		09+, 11+, 13+
I300T	38/480	440	6, 10	05, 07, 06	09+, 10+, 12+
I211W	38/480	460	6, 10, 14	07, 06, 08	11+, 12+,15+
I366R	38/600	546	6, 10, 14		09+, 11+, 13+
I195J	38/600	478	6, 10	08, 15, XX	13+, 16+, XX+
I284W	38/600	590	6, 10, 14	07, 06, 08	11+, 12+, 15+
I435T	38/600	600	6, 10, 14	05, 07, 06	09+, 10+, 12+
J420R	38/720	649	6, 10, 14		09+, 17+, 13+
J350W	38/720	700	6, 10, 14	07, 06, 08	11+, 12+, 15+
J825R	38/1080	952	6, 10, 14
J570W	38/1080	1060	6, 10, 14	07, 05, 08	11+, 12+, 15+
54 MM Hardware
J90W	54/852	770	6, 10, 14	16, 17, 18, XX	34+, 35+, 36+, XX
J315R	54/852	780	6, 10, 14, 18		22+, 24+, 29+, 32+
J180T	54/852	800	6, 10, 14	12, 13, 14, XX	24+, 27+, 30+, XX
J275W	54/852	850	6, 10, 14, 18	11, 12, 13, 14	25+, 28+, 31+, XX
J460T	54/852	850	6, 10, 14, 18	9, 10, 11, 12	21+, 23+, 26+, 29+
J540R	54/1280	1180	5, 10, 14, 18		37+, 25+, 29+, 32+
J135W	54/1280	1200	6, 10, 14	16, 17, 18, XX	34+, 35+, 36+, XX
J415W	54/1280	1280	6, 10, 14, 18	11, 12, 13, 14	25+, 28+, 31+, XX
J800T	54/1280	1280	6, 10, 14, 18	9, 10, 11, 12	21+, 23+, 26+, XX
K185W	54/1706	1500	6, 10, 14	16, 17, 18, XX	34+, 35+, 36+, XX
K695R	54/1706	1520	5, 10, 14, 18		22+, 25+, 29+, 32+
K550W	54/1706	1700	6, 10, 14, 18	11, 12, 13, 14	25+, 28+, 31+, XX
K1100T	54/1706	1500	6, 10, 14, 18	9, 10, 11, 12	21+, 23+, 26+, 29+
K1275R	54/2560	2170	Plugged
K700W	54/2560	2400	Plugged

Submitted by: Richard Hagen

Given how important it is to nail the delay time when you are deploying parachutes using the RMS delay charge, it is important to ensure that you are using the appropriate delay grain and delay spacer in every motor you build. While it's rare to encounter a mis-packed delay part, they may get mixed up between separate RMS reload kits by mistake. As a result, the following list has been compiled from postings on the RMR newsgroup and by nosing around the vendor racks at LDRS.

These three tables list information on delay components for most Aerotech RMS motors. (Missing data, and corrections to any of the data listed, are welcome.)

The first table shows the lengths of the delays and the color of the appropriate delay spacers for the reloads that fit the RMS 18/20, 24/40, and 29/40-120 ("consumer") casings.

RMS 18/20	4	7	10
	Short	Medium	Long
D-13W	black	none	none/blue stripe
D-24T	Yellow	green	none/blue stripe
E-27T	None/Short delay grain
RMS 24/40	3	5
E11J	None	None/Blue str	NA
F12J	None	None/Blue str	NA
	4	7	10
D9W	?	?
D15T	Silver	Pink	?
E28T	silver	Pink	none
E18W	Black	None	None/blue str
F24W	black	none	None/blue str
	6	9	12
F39T	lt blue	red	?
RMS 29/40-120		4	7
E16W	pink	black	none
F40W	pink	black	none
G64W	pink	black	none
	5	7
F22J	none	none/blue str	NA
G33J	none	none/blue str	NA
	5	8	11
E23T	?	silver	?
F52T	white	silver	orange

The second table shows the length of the delays and the appropriate reload delay kit, or RDK, number for reloads that fit 29mm, 38mm, and 54mm high power RMS casings. These kits contain several reload charges, and are sold separately by Aerotech. Note that since the delay charge burns at different rates depending on the propellant in the motor, the same delay train may be used for different delay lengths in different reloads. The RDK-3 kit, for example, burns for 6, 10, or 14 seconds depending on which motor it is used in.

RMS 29/60-240	6	10	14	NA
	Short	Medium	Long	XLong
F62T	1	2	3
G104T	1	2	3
H238T	1	2	3
H220T	1	2	3
F37W	2	3	4
G54W	2	3	4
H128W	2	3	4
H180W	2	3	4
G75J	3	4	NA
H97J	3	4	NA
RMS 38/240-720	6	10	14	NA
H242T	5	7	6
I357T	5	7	6
I300T	5	7	6
I435T	5	7	6
H123W	7	6	8
I161W	7	6	8
I211W	7	6	8
I284W	7	6	8
J350W	7	6	8
H73J	8	15	NA
H112J	8	15	NA
I154J	8	15	NA
I195J	8	15	NA
RMS 54/852-1706	6	10	14	18
J460T	9	10	11	12
J800T	9	10	11	12
K1100T	9	10	11	12
J275W	11	12	13	14
J415W	11	12	13	14
K550W	11	12	13	14
J180T	12	13	14
J90W	16	17	18
J135W	16	17	18
K185W	16	17	18

This table lists delay grain height and delay spacer color for the RMS Delay kits for 29mm, 38mm, and 54mm RMS casings.

	Delay kit	delay height	(decimal)	Spacer
29mm	RDK 1	11/32	0.34375	white
29mm	RDK 2	15/32	0.46875	blue
29mm	RDK 3	19/32	0.59375	red
29mm	RDK 4	23/32	0.71875	none
38mm	RDK 5	15/32	0.46875	white
38mm	RDK 7	19/32	0.59375	blue
38mm	RDK 6	23/32	0.71875	red
38mm	RDK 8	27/32	0.84375	none
38mm	RDK 15	27/32	0.84375	none
54mm	RDK 9	15/32	0.46875	2 x 1/4"
54mm	RDK 10	19/32	0.59375	1/8" + 1/4"
54mm	RDK 11	23/32	0.71875	1/4"
54mm	RDK 12	27/32	0.84375	1/8"
54mm	RDK 13	31/32	0.96875	none
54mm	RDK 14	?	?	?
54mm	RDK 16	31/32?	.96875?	2 x 1/4?
54mm	RDK 17	1-3/32	1.09375	1/8" + 1/4"
54mm	RDK 18	1-7/32	1.21875	1/4"
Note: RDK7 & RDK6 are listed in reverse order–this is correct. Note: All 54 mm spacers are white. Note: The RDK 15 uses a slower burning composition than other 38mm delays, and the delay grain has a black stripe on the outside.

RMS+ (new style) Delays

In 2000, AeroTech has simlified the delay structure to make them easier to install and more reliable. The tables below reflect the new RMS+ delays.

RMS 29/60-240 Short Medium Long

F62T 2+ 4+ 6+

G104T 2+ 4+ 6+

H238T 1+ 4+ 6+

H220T 1+ 4+ 6+

F37W 3+ 5+ 7+

G54W 3+ 5+ 7+

H128W 3+ 5+ 7+

H180W 3+ 5+ 7+

I200W 3+ 5+ 7+

G75J 5+ 8+ NA

H97J 5+ 8+ NA

RMS 38/240-720 Short Medium Long

H242T 9+ 10+ 12+

I357T 9+ 10+ 12+

I300T 9+ 10+ 12+

I435T 9+ 10+ 12+

H123W 11+ 12+ 15+

I161W 11+ 12+ 15+

I211W 11+ 12+ 15+

I284W 11+ 12+ 15+

J350W 11+ 12+ 15+

J570W 11+ 12+ 15+

H73J 14+ 16+ NA

H112J 14+ 16+ NA

I154J 14+ 16+ NA

I195J 13+ 16+ NA

This table lists delay grain height and delay spacer color for the RMS+ Delay kits for 29mm and 38mm RMS casings.

	Delay kit	delay height	spacer ht	Spacer
29mm	RDK 1+	.314	0.405	pink
29mm	RDK 2+	.375	0.344	red
29mm	RDK 3+	.438	0.281	purple
29mm	RDK 4+	.469	0.250	orange
29mm	RDK 5+	.563	0.156	aqua
29mm	RDK 6+	.594	0.125	blue
29mm	RDK 7+	.656	0.063	black
29mm	RDK 8+	.719	none	none
38mm	RDK 9+	.406	0.438	silver
38mm	RDK 10+	.469	0.375	black
38mm	RDK 11+	.500	0.344	red
38mm	RDK 12+	.594	0.250	orange
38mm	RDK 13+	.625	0.219	yellow
38mm	RDK 14+	.656	0.188	green
38mm	RDK 15+	.719	0.125	blue
38mm	RDK 16+	.781	0.063	black

Submitted by: Ted Cochran

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