The Estes 1613 pack contains three C6-3 model rocket engines plus four starters and four starter plugs. The C6-3 is a single-stage 18 mm engine for rockets weighing up to 4 oz (113 g) including the engine, and it is the recommended engine for many popular Estes kits, including the Colonizer, MAV, NASA SLS and Blue Origin New Shepard.
Key Features
- 3 C6-3 engines with 4 starters and 4 starter plugs
- Single-stage engine with a 3-second ejection delay
- 10 N·s of total impulse for higher flights than A and B engines
- Recommended for the Colonizer, MAV, NASA SLS, Blue Origin New Shepard, Saturn V (1:200 scale / Ready to Fly) and other compatible kits
Specifications
| Engine | Estes C6-3 (single stage) |
|---|---|
| Diameter | 18 mm |
| Length | 2.8 in. (7 cm) |
| Total impulse | 10.00 N·s |
| Max thrust | 15.30 N (3.4 lb) |
| Thrust duration | 1.60 s |
| Time delay | 3 s |
| Max lift weight | 4.0 oz (113 g) |
| Engine weight | 0.83 oz (23.5 g) |
| Propellant weight | 0.43 oz (12.2 g) |
| SKU | 78TE1613 |
What's Included
- 3 Estes C6-3 engines
- 4 starters
- 4 starter plugs
Ideal For
Flying the Estes Colonizer starter set and other 18 mm rockets rated for C6-3 engines.
Frequently Asked Questions
What does C6-3 mean?
"C" is the total-impulse class (5.01–10 N·s), "6" is the average thrust in newtons, and "3" is the delay in seconds before the ejection charge deploys the recovery system.
Does this pack include recovery wadding?
No. Use Estes recovery wadding (sold separately as Estes 2274) for rockets with parachute or streamer recovery.
Is there a warranty?
Estes warrants the engines against defects in materials or workmanship for one year from purchase. Engines can't be returned by mail.
Ships via US Postal Service only. A physical mailbox or PO Box is required for delivery.





