Custom Motors


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MDRA

Oct 12

METRA

PYRO

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Contact for International Orders


	The Official Magazine of Tripoli Rocketry Association




		EX Rocket Motor design software


	Sponsor Sugar Shot To Space

Design Your Own Motor

Maximum Case Length is 35”. Enter Throat Dia in 64ths.

38mm			54mm		76mm
Propellant Length			Propellant Length		Propellant Length
Nozzle Throat Dia			Nozzle Throat Dia		Nozzle Throat Dia
Nozzle Length			Nozzle Length		Nozzle Length
Case Length			Case Length		Case Length
Liner length			Liner length		Liner length

Diameter	Case Length	Case Price		Complete Motor Price	To order, EMAIL to confirm
38mm				38mm	total price with shipping.
54mm				54mm	Include the case length and
76mm				76mm	nozzle throat diameter.
						EMAIL
	Nozzle Price	Bulkhead Price		Step 1- Enter your propellant length
38mm				Step 2- Enter the throat diameter in 64ths...e.g. 24
54mm				Click anywhere to update.
76mm				Change values in white boxes only.

ExcelEverywhere

Fraction	Decimal	Fraction	Decimal	Fraction	Decimal	Fraction	Decimal	Fraction	Decimal	Fraction	Decimal	Fraction	Decimal	Fraction	Decimal
1/64	0.016	9/64	0.141	17/64	0.266	25/64	0.391	33/64	0.516	41/64	0.641	49/64	0.766	57/64	0.891
2/64	0.031	10/64	0.156	18/64	0.281	26/64	0.406	34/64	0.531	42/64	0.656	50/64	0.781	58/64	0.906
3/64	0.047	11/64	0.172	19/64	0.297	27/64	0.422	35/64	0.547	43/64	0.672	51/64	0.797	59/64	0.922
4/64	0.063	12/64	0.188	20/64	0.313	28/64	0.438	36/64	0.563	44/64	0.688	52/64	0.813	60/64	0.938
5/64	0.078	13/64	0.203	21/64	0.328	29/64	0.453	37/64	0.578	45/64	0.703	53/64	0.828	61/64	0.953
6/64	0.094	14/64	0.219	22/64	0.344	30/64	0.469	38/64	0.594	46/64	0.719	54/64	0.844	62/64	0.969
7/64	0.109	15/64	0.234	23/64	0.359	31/64	0.484	39/64	0.609	47/64	0.734	55/64	0.859	63/64	0.984
8/64	0.125	16/64	0.250	24/64	0.375	32/64	0.500	40/64	0.625	48/64	0.750	56/64	0.875	64/64	1.000

6061-T6 Motor Case
Compatible with standard commercial liners and casting tubes.
6061-T6 aluminum.
Includes 2 internal snap rings and 1 thrust washer.
38mm&76mm includes external spiral retaining ring.

Fine Graphite Nozzle
Throats in 1/64 increments.
Includes silicone o-ring

6061-T6 Plugged Bulkhead
54mm-1/4”-20 tapped thread.
76mm-5/16”-20 tapped thread
Includes silicone o-ring.

Free Liner/Casting Tube Set
with the purchase of a Complete Motor Set and matching Tru-Core 4-grain Set.

Cases and Complete motors may be shipped separately. For ordering cases and complete motors, please inquire by email for a total price with shipping and handling.

MOTOR TIPS

24mm and 29mm Motor Sets
Will Soon Be Available !

True Coned Graphite Nozzles !

Using RDK or HDK Delays !

Scott T.-

Video
See this 24mm 5G motor test burn. 200Ns-0.56secs. Est. 1000psi.
No bulges-no damage.


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