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Old 01-05-2020, 08:08 PM
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Default Using Up A8-3s

Happy 2020,

Since I have a bunch of A8-3s, I decided to build a bunch of BT-20 rockets to use the bunch. I am cloning Estes Sprites and Centuri Vector-Vs along with RDC moon-glo kits.

Astrosaint
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  #2  
Old 01-06-2020, 06:05 AM
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Quote:
Originally Posted by Astrosaint
Happy 2020,

Since I have a bunch of A8-3s, I decided to build a bunch of BT-20 rockets to use the bunch. I am cloning Estes Sprites and Centuri Vector-Vs along with RDC moon-glo kits.

Astrosaint

Wizards, Vikings and Sky Hooks are also great A8-3 birds.
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I miss being SAM 0058

Build floor: Estes Honest John, PemTech Kraken, Semroc Egg Crate, Semroc S.P.E.V

Rediscovered: Semroc Laser X, Semroc SLS Laser X

In paint: Centuri Stellar Hercules, Estes Monarch, Estes Nike Apache, Estes Sky Warrior, Semroc Squire

Body shop: Estes Jayhawk, TLP Perseus

Ready to fly: Centuri Zebra II, Estes Alpha, Estes Astron Farside X, Estes Astron Apogee, FRW Star Jart, Semroc Point
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  #3  
Old 01-06-2020, 08:15 AM
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Build a cluster rocket in addition to all those little minimum diameter birds. A pair of A8's will give you a good approximation of the fabled B14. If all you have are 3 second delays, the rocket will need to be fairly heavy. You could do something like a long Bertha or move up in diameter if you don't like tall rockets. In other words, any rocket that you've flown on a B6-4 and thought a B6-2 would be better, that's a good size for the twin A8-3. It's perfect for larger demos on small fields if you ever do anything for a school, scouts, or church and the field size is limited.
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Old 01-06-2020, 11:15 AM
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Quote:
Originally Posted by tbzep
Build a cluster rocket in addition to all those little minimum diameter birds. A pair of A8's will give you a good approximation of the fabled B14. If all you have are 3 second delays, the rocket will need to be fairly heavy. You could do something like a long Bertha or move up in diameter if you don't like tall rockets. In other words, any rocket that you've flown on a B6-4 and thought a B6-2 would be better, that's a good size for the twin A8-3. It's perfect for larger demos on small fields if you ever do anything for a school, scouts, or church and the field size is limited.


Greetings:

Well, I inherited about a 1,000 of these little motors from a closed out rocket education program. I gave out 2/3 of them for free to deserving kids and adults and will use the rest. They were all Pistco samples. I have done clusters but ignition using the new starters is a question mark these days.
[IMG][IMG]Atlee.gif[/IMG][/IMG] [IMG][IMG][SPRITE 20[/IMG][/IMG]
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  #5  
Old 01-06-2020, 11:32 AM
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Quote:
Originally Posted by Astrosaint
I have done clusters but ignition using the new starters is a question mark these days.

I do clusters with up to 4 motors all the time. The modern "starters" are no problem. Just make sure they are not damaged and use a 12v source instead of these little 6v or 9v Estes and Quest systems. If you are still paranoid about them, you can dip/paint them in nitrocellulose lacquer (nail polish). A visual inspection and individual continuity check will go a long way in successful clustering with modern "starters".

Cheap lawnmower batteries, gel cells, etc are good, even when they won't kick over an engine anymore.

BTW, I've got a big stash of A8-3's and C6-7's from Walmart closeouts over the years. I've done a bunch of C6-7 clusters because of that. Three C6-7's give you that D20 (actually a baby ~E15 with a peak thrust of about 45N) that a lot of people want Estes to produce.
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