$10.29
ENGINES FOR MODEL ROCKETS
3 – A8-5 Engines
4 – Starters
4 – Plugs
PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery.
In stock
The Estes A8-5 engine is an upper stage stage engine designed for model rocket flight. This engine can also be used as a single stage engine in rockets weighing less than 5 ounces, including the engine. Each package includes 3 engines, 4 starters and 4 plugs.
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WARNING
| Length | 2.8 in. (7 cm) |
|---|---|
| Diameter | .7 in. (18 mm) |
| Estimated Weight | .55 oz. (15.6 g) |
| Total Impulse | 2.50 N-sec |
| Time Delay | 5 Seconds |
| Estimated Max Lift Weight | 2.0 oz (57 g) |
| Max Thrust | 13.30 Newtons (3.0 lbs) |
| Thrust Duration | 0.50 Seconds |
| Initial Weight | 0.55 oz (15.7 g) |
| Propellant Weight | 0.14 oz (4.1 g) |
| Quantity Per Pack | 3 |
Sarah (verified owner) –
Used in place of A8-3
I used this in place of the A8-3 because my local hobby store sells out of engines quickly. I launched the Sky Writer using an A8-5 on a windless day and I caught it without leaving my chair!
David –
A impulse for light models
I’ve used this in place of the A8-3 in very light models. Sometimes the 3 second delay isn’t enough and the chute comes out while its still ascending. Even though its classed as an “upper stage” engine, if your model is very light or has great aerodynamic properties that can take advantage of a long coast, give this motor a try.