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- Jun 19, 2015
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+1 on the payloadbay.com
Print it out and glue it to a piece of $2.99 foam board from Wal-Mart.
Print it out and glue it to a piece of $2.99 foam board from Wal-Mart.
How do you know it's going to fly minimum diameter and high velocity? Haven't you heard the terms: "You can always adapt down" and "confetti doesn't fly fast"? (Okay, I made the second one up.)
And rockets, I have picked up a lot of shoddy advice over the years... well, months. Anyways, you can ask me so you have a scapegoat when things fail. Just no lawsuits please!
Well, he said it was minimum diameter 29mm and flying an H, so that kinda adds up to attempting to fly fast. If I may say so, I've seen a lot more good and supportive advice on this forum than the other kind. If anything, they trend toward the codependent.
Snap it off. Then get a fin guide from the internet (payloadbay.com) and use it to make proper fins. EDIT; nvm, just saw your other post.Oh, boy I think I'm going to need some HELP!
View attachment 316305View attachment 316306
The first two fins were good, but the last fin didn't go over too well. I redid the simulation on RockSim with the canted fin. It still was stable. But, I want a second opinion. What are your guys ideas??
Thanks,
29mm MD + H195 + cardboard rocket = a need for tracking. If it stays together, it is going to disappear except in the bluest sky conditions.
Give some thought to your launch space. Can you recover this thing? An H-195 is a AT reloadable case, no? What would a 3 mile drift do to your odds of finding the thing?
I have a 29mm MD carbon fiber rocket (heavier than cardboard and wood fins but stronger) that gets way up there (2000'?) on Estes F motors. If I used 4 times the motor (H) I would expect to never see it again without some kind of tracking device. Smart Launch app says 9974'. You might get to see all the powder plus various other parts released at a much lower altitude when the 60+ Gs tests some joint to failure.
I have "6 tracking devices" I have my older brother, he can see a tiny rocket thousands of feet high. Second, I have a parachute that will shine from the sun, (it's silver & sparkly) Third, you will probably hear the ejection charge, you can track it that way. Fourth, the altimeter will beep, I tested it, it is ear piercing loud! Fifth, you should be able to see it in the corn because it will be red & blue. Sixth, I usually put glitter in my MD rockets, or rockets that will go high.
A quick reality check:
I launched a 38mm machbuster to about 4000-5000 feet with a few dozen people watching. The only person who saw it eject had binoculars. He was able to track the chute, but nobody else saw it. It landed in pretty much bare dirt and some low grass. It was over a hill from the launch area, so we lost visual before it hit the ground. I searched for an hour with a good bearing and didn't find it. Someone else looking for another rocket brought it in, from about half a mile from the launch site. The chute had shredded (long story) so it fell pretty fast. On another occasion, I was able to track an altimeter that had ejected from a rocket on a mowed grass field. I could hear it from about 30' away, out in the grass with no rocket to muffle it.
You're sending a smaller rocket to 8-10 thousand feet. You won't see it at apogee. You MIGHT see the chute, but I think it's unlikely unless it's a super-calm day. You won't hear the ejection charge, other than a muffled thump that won't help you locate it. You won't see the rocket in anything more than knee-high grass, and even that might be a stretch. If it's in corn, you'll never find it unless you can get within 50 or so feet. Your rocket will land a mile or more away, so you won't be able to get a good bearing to get you that close.
I've launched a rocket that I didn't expect to find again, but I did that on a single-use motor. If you fly this, you'll be buying a new casing. Seriously, do your savings a favor and fly it on a D and then an F single use. If you think you can still find it on an H, go for it. I would be surprised if you can find it on the F.
[video]RECORDBREAKERII 001[/video]
This a video of me explaining everything. Sorry if the audio isn't bad. I had a lot of ugh, and umms in there. Sorry.
[video]RECORDBREAKERII 003[/video]
This video is a up-close of my MD rocket.
[video]RECORDBREAKERII 004[/video]
And there is my launch pad, from PVC. Each piece is 3 ft. long.
Is there a good finish for this rocket? Something that will make it shine & smooth??
Thanks,
inexpensive tracker if you have a ham license there is a $20.00 2 meter RF kit that can be foundOK, thanks for the tips!
Oh, bye the way I'm flying a DMS motor, so no casing.
If I lose it, so what. There is nothing really expensive other than the $30 altimeter. I've lost a altimeter in a rocket similar to this. I got the rocket back, but the nose cone separated. Unless I can find a tracker that is really small & cheap, it will have to go "tracker less."
Thanks,
inexpensive tracker if you have a ham license there is a $20.00 2 meter RF kit that can be found
Got a link to that deal?
Just my $0.02 USD: since you seem dead set on this course of action, at least think about doing your maiden flight on a 29mm BP. An E16 ought to fit the bill.
Got a link to that deal?
Hmm, I might, I'm considering. I'm kinda on a budget so I'm not sure.
Thanks,
So when are you going to fly this? Be sure to post pics & videos.
You can get a package of E or F motors for less than the cost of the altimeter you're willing to lose with this flight. If you're on a budget, save the money on replacing the altimeter.
Don't the E16s CATO alot?Just my $0.02 USD: since you seem dead set on this course of action, at least think about doing your maiden flight on a 29mm BP. An E16 ought to fit the bill.
Don't the E16s CATO alot?
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