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04-12-2012, 09:47 PM   #1
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## how to layout a cone

i need to make a cone out of sheet metal. how do i figure out the radius's i need and length between and how much to cut out to get the size and slope i need. i am assuming there is formula's out there for this and was hoping to be educated

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04-12-2012, 11:13 PM   #2
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I dont know a formula,Id practice on an old cereal box and use it for a pattern

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 04-13-2012, 10:01 PM #3 Member   Join Date: Dec 2011 Location: zentral Iowa Posts: 1,437 Rewards Points: 960 I'm thinking a cone is a triangle, wrapped together, right? Likewise, a cylinder is a rectangle wrapped together. There should be a formula to tell you the circumference of a diameter or radius. Once you figure out the bottom circumference, then you'll just wrap everything over 1" uniformly and you'll have it. Just draw a line 1" or whatever parallel to one edge and overlap that much. Are you making some caps for a school class or what?

 04-13-2012, 10:54 PM #4 Member     Join Date: Oct 2010 Location: NE Ohio Posts: 598 Rewards Points: 500 i got a cone calculator from goggle when I had to make a megaphone for my drag bike. It is in Excel format but can be used with open office and super simple to use for any size.
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 The Following User Says Thank You to joecaption For This Useful Post: jaydevries (04-14-2012)
04-13-2012, 11:12 PM   #6
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Quote:
 Originally Posted by Ravenworks i got a cone calculator from goggle when I had to make a megaphone for my drag bike. It is in Excel format but can be used with open office and super simple to use for any size.
What kind of dragbike?
It dont get much easier than a banana pipe on an old z1 turbo!
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04-14-2012, 09:40 AM   #7
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Quote:
 Originally Posted by plummen What kind of dragbike? It dont get much easier than a banana pipe on an old z1 turbo!
I thought I was "Old School" with my 1984 GPZ100 bored 1300

You can lay the cone out,however if it is made of metal you will have to get a sheet metal shop to "Roll It" for you

04-14-2012, 10:08 PM   #8
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thank you

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