ESTES PSII Super Big Bertha - Build Thread

Having said that.....I think the F40 is the perfect Pro-Series II motor......

BEC said:

It sure puts up the prettiest flights, doesn't it?

The improvements did cost you some altitude....the two F15 flights for which I have data went to 820 and 929 feet (but no Chute release, and the altimeter was the smaller, lighter FireFly).

I shot the second color on my replacement SBB today. It again was built essentially stock (except for adding a baffle). It weighed just under 9 ounces before paint. I'll have a final weight in a day or two.

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It sure does fly great. I knew it wasn't going to be a high flier with the extra weight... I didn't mind though. It looks great low and slow. Would love to see a pic of yours when you get it finished.

RocketFeller said:

We flew my son's Super Big Bertha last Thursday at the weekly rocket club meeting at our school. We used an adapter and flew it on a D12-3. It was a perfect flight to around 200-300' (just a guess, no altimeter on board) with deployment just as it arced over.

Ours was 12.6 ounces ready to fly, the only deviation from stock build was a nylon parachute.

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That sounds awesome. Mine isn't much heavier than that.

BSNW said:

That is a beautiful ride! I bet it would also be glorious on an F40-W for a nice long slow boost OR even a G64W! No problem with your chute release. I think the H128 would be too fast....more like artillery. I say try the F40!
Andrew

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I've been actually thinking about trying it on a F42. I need to either find the file for the SBB or create it in OpenRocket and see what happens... curious to see if it can handle the slow burn of a F23JW. I think that would look real impressive.

My second one is ready to fly. Just over 9.5 ounces with no motor. It may get its first flight tomorrow - but the club launch is expected to be attended by three Scout groups, so I’ll likely be too busy to fly more than once or twice myself.

Try it on a G40...you'll love it!