The Estes 1593 pack contains three 1/2A6-2 model rocket engines with four starters and four starter plugs. The 1/2A6-2 is a low-power, single-stage 18 mm engine for rockets up to 2 oz (57 g). It's a popular "first flight" engine that keeps standard-size rockets low and close, so they're easy to recover on smaller fields.
Key Features
- 3 1/2A6-2 engines with 4 starters and 4 starter plugs
- Low-power 18 mm engine, good for first flights and small fields
- Short 2-second delay for low, quick flights
- Recommended for the Estes Wizard, Alpha III and other compatible kits
Specifications
| Engine | Estes 1/2A6-2 |
|---|---|
| Diameter | 18 mm |
| Length | 2.75 in. (7 cm) |
| Total impulse | 1.25 N·s |
| Max thrust | 8.90 N (2.0 lb) |
| Thrust duration | 0.30 s |
| Time delay | 2 s |
| Max lift weight | 2.0 oz (57 g) |
| Engine weight | 0.48 oz (13.6 g) |
| Propellant weight | 0.10 oz (2.7 g) |
| SKU | 78TE1593 |
What's Included
- 3 Estes 1/2A6-2 engines
- 4 starters
- 4 starter plugs
Ideal For
First flights, small schoolyards and test-flying new builds.
Frequently Asked Questions
What does 1/2A6-2 mean?
"1/2A" is the total-impulse class (0.626–1.25 N·s), "6" is the average thrust in newtons, and "2" is the delay in seconds between burnout and the ejection charge.
Do I need recovery wadding?
Yes, for parachute or streamer recovery. It's sold separately (Estes 2274).
Is there a warranty?
Estes warrants its engines against defects in materials or workmanship for one year from purchase. Keep the warranty information that comes in the package. Engines can't be returned by mail.
Ships via US Postal Service only. A physical mailbox or PO Box is required for delivery.