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Bret Packard replied to the topic "L2 project – WHAMmer" – 6 years, 1 month ago
I’m sorry Warren but I don’t understand your chute example. What is 1/4#? Does that mean 1/4 scale or 1/4 pound? As I said above, the dry weight is about 106 oz. or roughly 6.5 lbs. The 38/720 hardware weighs… Read more»
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Bret Packard posted a new topic "Batman's L3 Build Blog" – 6 years, 1 month ago
Just thought I would throw the link up for anyone who might be interested. The blog will follow the build and encompass some of my rocketry related ramblings.http://www.batmansrocketworks.blogspot.com/
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Bret Packard posted a new topic "Upcoming April Launch" – 6 years, 1 month ago
Did any of the super wet snow we got down in Denver hit up in Pawnee? Hopefully it will mitigate some of the fire danger if it gets good and soaked in.
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Bret Packard posted a new topic "Pro 54 Closure Adapters" – 6 years, 1 month ago
Anyone ever tried one of these? They have them for Pro54 and Pro38 hardware apparently. I was thinking it looks like it would work for a threaded forward closure.https://aeropack.net/webstore/product.asp?productid=353243224569305Would be pretty handy if they work well. I can’t see how… Read more»
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Bret Packard posted a new topic "Vacuum pressure" – 6 years, 1 month ago
How much is really needed for bagging fins. I’m sure more is better but how much real difference is there in the final product if you go from say 10″ to 20″ of vacuum?
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Bret Packard posted a new topic "CRASH Online?" – 6 years, 1 month ago
Anyone know what’s up with the CRASH website? I tried to get on it the last couple days to check their calendar and it seems to be gone.
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Bret Packard posted a new topic "Launch Condtions for MHM?" – 6 years, 1 month ago
When do we expect to have a definite go or no go for MHM? I need to know how hard to work on all the stuff I’ve been procrastinating on 😛
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Bret Packard posted a new topic "24mm Cesaroni reloads" – 6 years, 1 month ago
Are any of you vendors planning to stock these reloads and be at MHM? I want to fly a couple on my cluster rockets and prefer to support club vendors who showup to launches, cuz I for one LOVE having… Read more»
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Bret Packard posted a new topic "Altimeter hole placement Nike Smoke" – 6 years, 1 month ago
Allright guys, my 1/4 scale Nike Smoke is ready to…well, smoke, and my 1/3 scale is right behind it. So for those of you who are familiar with the rocket, where do you/would you put your vent holes? With the… Read more»
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Bret Packard posted a new topic "E-matches at MHM" – 6 years, 1 month ago
Anyone on site for Mayhem going to have E-matches? I just realized I am out and I’m not sure who if anyone is selling them these days. Thanks.
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Bret Packard posted a new topic "Little Dog Harness Attachment" – 6 years, 1 month ago
How are you guys anchoring your recovery system on your LD’s? I figure I’ll go with an epoxied eyebolt in the motor ejection well when I fly it DD, but I’d like to be able to fly it motor ejection… Read more»
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Bret Packard posted a new topic "determining composite layers" – 6 years, 1 month ago
Is there a resource or rule of thumb for deciding how many layers are needed on a composite airframe tube. I want to try rolling a 38mm carbon tube, 5.7oz cloth, and trying to keep it light. For this exercise,… Read more»
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Bret Packard posted a new topic "Garmin Astro 220" – 6 years, 1 month ago
If anyone has one they can bring to the meeting I would appreciate it. I just bought a new dc20 from ebay and I want to make sure it works properly. Thanks!
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Bret Packard posted a new topic "engineering mylar" – 6 years, 1 month ago
I have a buddy who is a civil engineer and it occured to me today that we submit our As-Built drawings to the governmental jurisdictions on mylar. So I grabbed partial roll of it from him to try out. Going… Read more»
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Bret Packard posted a new topic "Headed to Florida for a rocket launch!" – 6 years, 1 month ago
There is a fundraiser that I attend every year for the Wings Over the Rockies Air and Space museum. This is an organization that I support both personally and through my business because of the awesome work they do for… Read more»
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Bret Packard posted a new topic "Texalium" – 6 years, 1 month ago
Anyone used this? Looks like it would look awesome as a finish layer on a set if fins.http://www.solarcomposites.com/composites/compositefiberglass.html#Blue
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Bret Packard posted a new topic "I need some peel ply, mylar etc." – 6 years, 1 month ago
There seem to be alot of types of peel ply. Can someone recommend a vendor and a specific peel ply for glassing tubes. 1″ – 4″ cardboard and phenolic is what I am using now to practice. I also need… Read more»
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Bret Packard posted a new topic "Recovery Harness Attachment" – 6 years, 1 month ago
What method do you guys prefer for high performance designs of 4″ diameter or more? My preferred method is to use a kevlar strap and epoxy each end on opposite sides of the motor mount tube. The strap is long… Read more»
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Bret Packard posted a new topic "Vacuum Generators" – 6 years, 1 month ago
Anyone tried one of these? Am I properly understanding that this creates a vacuum from my air compressor?http://www.fibreglast.com/product/Vacuum_Bagging_Starter_Kit_02229_A/Vacuum_Bagging_Pumps
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Bret Packard posted a new topic "75mm vs 98mm" – 6 years, 1 month ago
Staying along the lines of my research for a L3 project, I have been looking at motor options. Why is it that 98mm reloads are so much more expensive than an equivlent 75mm load? For example, the Pro75 6 grain… Read more»
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