C6-3 Engines

C6-3 Engines


3 – C6-3 Engines
4 – Starters
4 – Starter Plugs

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery.


Availability: In stock


Recommended Rockets

You may also like…

The Estes C6-3 engine is a single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 4 ounces, including the engine. Each package includes 3 engines, 4 starters and 4 plugs.

ATTENTION: Residents of California, New Jersey, Rhode Island and North Dakota please review the Terms of Sale for state specific restrictions or Click Here for State Specific Restrictions.




2.8 in. (7 cm)


18 mm

Estimated Weight

.83 oz. (23.5 g)

Total Impulse

10.00 N-sec

Time Delay

3 Seconds

Estimated Max Lift Weight

4.0 oz (113 g)

Max Thrust

15.30 Newtons (3.4 lbs)

Thrust Duration

1.60 Seconds

Initial Weight

0.83 oz (23.4 g)

Propellant Weight

0.43 oz (12.2 g)

Quantity Per Pack


6 reviews for C6-3 Engines

  1. The Wrocketman

    Short Delay for heavy rockets…

    After reading some of the reviews, I think a review of what the delay phase means in the flight of a model rocket is all about is a good idea. Bottom line- you want to use the delay length that allows your rocket to slow down from the power phase before ejecting the chute. Too long a delay and your rocket noses over and heads for earth accelerating at 9.8 meters per second squared. If it gets going fast enough- when the chute does eventually get ejected (hopefully before your precious rocket “lawn darts” into ground) it rips the shroud lines right off the plastic chute and your rocket falls the rest of the way to the ground without the aid of the chute to slow it down (usually suffering some damage on landing). To short a delay and your rocket has not slowed down from the power phase when the chute gets ejected and is still probably going too fast- ripping the chute apart, and your rocket falls to ground (consequences?- see above).

    So what is the good news here? Estes already did the homework for you! Use the engine with the delay length they recommend. My vintage Mars Lander uses a C6-3 because it is a FAT HEAVY ROCKET. I highly DO NOT RECOMMENDED varying from the suggested delay length if you wish your rocket to have many happy successful flights. So, if a C6-3 is recommended for your bigger, heavier rocket- then by all means send it up on one, you will see it go as high as it will go on a standard size engine.

  2. firstimeaviator

    great product

    my engines were awesome for where I live they went about 400-500 yards away from my launch pad and preformed flawlessly

  3. dave

    strong and reliable

    estes engines are easy to use work well and are reliable.

  4. Ron

    Outta Sight!

    The C engines really kicks it up a notch compared to B’s. At this level the rocket flies out of my visual range, but it does emit a trail of smoke before ejecting the parachute. At this level I can’t tell the difference between C6-3 or C6-5, which has a longer delay before ejecting the parachute. I usually first launch with the B engine, that gives me an estimate of its trajectory then launch the C for the best effect. So far I’m able to recover the rocket with a couple C launches under my belt. Oh yeah, last flight I didn’t put enough wadding and the chute was melted and torn off during the ejection. Rocket landed fine but the chute floated in the air for at least 8-10 minutes. Miraculously my son and I were able to recover the chute as well.

  5. MJA RocketWorks

    Good on still days

    The C6-3 is okay. It’s very powerful, but the delay time is a little too soon. I prefer C6-5s for its longer delay time. The way I see it, the longer a rocket’s in the air after its chute deployed, the better chance of it being in a tree. The C6-3 is still good as a substitute engine on perfectly windless days.

  6. Billy

    Favorite Engine

    This is my favorite engine as it is always reliable, relatively cheap, and has the perfect delay time on it.

Add a review

Your email address will not be published.