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  #1  
Old 10-02-2019, 10:19 AM
Dave Pritts Dave Pritts is offline
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Default Nose Cones on Payload Section

Recent Mid Power builds include Payload sections with recovery system below in the booster section, popped by motor's ejection charge as normal. I would like to keep the nose cone removable to allow access for altimeters, etc. Tape around the shoulder has failed for me. Maybe Rivets or Screws,

Any opinions on what's the best way to secure nose cone?
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  #2  
Old 10-02-2019, 12:38 PM
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astronwolf astronwolf is offline
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Quote:
Originally Posted by Dave Pritts
Recent Mid Power builds include Payload sections with recovery system below in the booster section, popped by motor's ejection charge as normal. I would like to keep the nose cone removable to allow access for altimeters, etc. Tape around the shoulder has failed for me. Maybe Rivets or Screws,

Any opinions on what's the best way to secure nose cone?

By "tape around the shoulder" do you mean a friction fit? That doesn't always work. Instead, I wrap tape on exterior of rocket where the nose cone - body tube meet. This is not a friction fit. You want to make it look nice, then use aluminized mylar tape. I've also used colored electrical tape which seems easier on the underlying finish but does a nice job at securing nose cones.
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Old 10-02-2019, 02:29 PM
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ghrocketman ghrocketman is offline
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Screws are a more-positive non-finish-marring retention method.
That said, I have had zero cone retention issues using friction fitting through H-power.
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  #4  
Old 10-02-2019, 02:32 PM
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Screws also work. I have used metal and nylon screws on different projects. With cardboard tubes, you probably want to reinforce the holes in both the tube and nosecone since they can wear over time and get large enough that the screws fall out. A little CA around the edge of the holes in the tube is a quick reinforcement.
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  #5  
Old 10-02-2019, 04:18 PM
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sandman sandman is online now
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Yes, screws work for me too.

I use teeny tiny wood screws.
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Old 10-02-2019, 04:19 PM
Dave Pritts Dave Pritts is offline
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how do you gauge how tight to make it without making it destructive to get the cone in and out.
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  #7  
Old 10-02-2019, 04:21 PM
Dave Pritts Dave Pritts is offline
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teeny as in #4 or # 6 by about 3/8?
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  #8  
Old 10-02-2019, 04:22 PM
Dave Pritts Dave Pritts is offline
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seems like nylon screws would hold down the weight. What size would you use on a 3" and a 4" rocket?
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  #9  
Old 10-02-2019, 04:30 PM
Dave Pritts Dave Pritts is offline
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Friction fit is what I have been using with mixed results. Can't tell if I have it tight enough because I don't get to fly my MPR birds a lot. The electrical tape idea sounds interesting although I'd like a cleaner look if possible.
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  #10  
Old 10-02-2019, 05:11 PM
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On my Estes Mammoth, I wanted to be able to bust it in half for easier transport. I used very small screws (around #3 Id guess) in 3 locations (since its a 3-finned rocket, I wanted symmetry.) I toughened the holes in the tube with thin CA. The screws go into the coupler, and I toughened these holes with CA as well.

If you want a quick-to-connect/disconnect solution, Apogee sells nice two-piece removable rivets. A 10-pack is $3.86.

https://www.apogeerockets.com/Build..._Plastic_Rivets
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