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Doug Gerrard replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
I will probably use a small chute on the flight, just left it out for the test. For the drouge compartment I have 5″ for chute space but another 9″ for the coupler. When I tested at 0.3 gms it… Read more»
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Bruce R. Schaefer replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Doug, that was perfect, and at 0.5 grams. I noticed that you didn’t use a chute. I’ve never tried it without one. Do you get reliable results if you don’t? I mean it makes sense, tired of damages chutes!
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Conway Stevens replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Ahhh. had me worried that i had been doing something wrong there doug. I was like how much.. wow I did that little and nothing really happens. LOL.. Yes with a piston you can use moderatly less. I on the… Read more»
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Doug Gerrard replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
oops, I did forget to mention that I use a piston. That will affect the charge required, all the more reason to do ground testing. Just thought you should know.Doug
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Bruce R. Schaefer replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
You’re a brave man, Ken. I won’t be doing any ground testing until after Oktoberfest most likely. But I would really like your help in keeping things from blasing through fences. 🙂 I’m saving the electronics installation, ground testing, etc…. Read more»
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Ken Plattner replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Bruce, I’d love to help. I’m going to be out all next week through the weekend, but anytime after I get back will work for me. Just let me know.Ken.
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Bruce R. Schaefer replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Doug, I’m going to download the video at work tomorrow. I’m still only dial-up here at home. Listen, my video of me destroying my test stand and upper section of a 3″ rocket with 2 GRAMS is a lesson… Read more»
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Doug Gerrard replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Bruce, if you haven’t check out the video I put on my site you should look at it before you test. I have 24″ of 6″ tube and the online calculators said I needed at least 3 grams just to… Read more»
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Conway Stevens replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Using one of the calculators as a guide. Start there and use a charge for that appropiate space. See how weak or strong it is when you test it. Then make adjustments from that point. Lets say it shears the… Read more»
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Bruce R. Schaefer replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
I’ll ask my wife to hold the blanket, and our dog can hold the other end. I know hers is paid up. No, won’t work, she’ll have to hold both somehow, our dog hates loud noises. 🙂 Conway, I think… Read more»
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Conway Stevens replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Actually when I ground test I do a net/catch assembly with a large blanket or 2Absolutely, always rig something to catch the potential projectile. Many ask a couple friends to hold the blanket in front of the rocket. That works… Read more»
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Doug Gerrard replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Actually when I ground test I do a net/catch assembly with a large blanket or 2Absolutely, always rig something to catch the potential projectile. Many ask a couple friends to hold the blanket in front of the rocket. That works… Read more»
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Conway Stevens replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Actually when I ground test I do a net/catch assembly with a large blanket or 2. keeps it from going throug the fence. And I have tested up to 7 to 8 grams before.
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Bruce R. Schaefer replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
I’m going to use, and ground test first but haven’t yet, the Quickburst 1-12gm. canisters for my L3. Heard very good things about them. I’ll probably test at a launch, since I don’t want to shoot anything through my fence…. Read more»
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Conway Stevens replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Cool Doug. Thanks for the info. I bought a box of 100 of the Quickburst and they do look very simular to Davey’s. But I to wish I could get the long 3m length. I use the left over wires… Read more»
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Doug Gerrard replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
I always like Davey Fires but as I mentioned I just can’t find them anywhere. I picked up Quickburst at LDRS and they are in just about everyway comparable to Davey Fires. They list their spec on the package (and… Read more»
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Conway Stevens replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Doug as all of my experince has been on Davey Fires or Oxral how did you like the Quickburst?
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Brad Morse replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Thats interesting on the ematch differences there. Any Idea why? Has anyone used the quickburst ematches yet?The reason is because some of the ematches have differing amounts of pyrogen. IIRC, the difference between a 28B and a 28BR is that… Read more»
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Doug Gerrard replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
My tests were done with Quickburst. Mostly because I have a hard time finding any others.Doug
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Conway Stevens replied to the topic "Nothing beats ground testing!" – 6 years, 10 months ago
Thats interesting on the ematch differences there. Any Idea why? Has anyone used the quickburst ematches yet?
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