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pipe tuning formula

06/19/2008 4:55 PM

OK, so... I'm building a fountain and a pond in the back yard and I got the idea of putting some water chimes in it. I've ordered some 2 inch copper floats. The floats will bob about in the water and bump up against copper pipes (chimes) that will be suspended horizontally just above the surface of the water.

So far, so good, right?

I'm using common 1" copper plumbing pipe for the chimes. My question is - what's the formula for calculating how long to cut the pipe to produce a particular pitch?

I did some googling and found a formula for cutting other chimes based on a reference chime, but nothing that tells me an absolute frequency.

Any thoughts?

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Guru

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#1

Re: pipe tuning formula

06/19/2008 6:05 PM

Given the variation in pipe, useing a reference chime is probably your best bet. Tune the first one and then use it as a reference. You can use a guitar tuner to tune the first one. You can buy a decent guitar tuner at the Guitar Center on Nasa 1 and the Gulf freeway for about $15 - $30.

Or drop me an e-mail and I'll let you borrow one of my tuners...

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#9
In reply to #1

Re: pipe tuning formula

06/20/2008 9:24 PM

Thanks, I'm thinking I'll use one of my doorbell chimes and tune the reference by ear, at least until my hands wear out from cutting and re-cutting the tube.

Or, I can use the Korg Triton Studio that I bought my partner at the Guitar Center on Nasa RD 1.

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#2

Re: pipe tuning formula

06/19/2008 11:39 PM

This sounds like a great idea. I hope you will email me directly after your on line I would like to see pictures.

Type M copper should offer the highest pitch per linear length

Type L an K are close to each other.

I would cut equal lengths of different types of copper and strike them and listen.

Sorry this answer is "off subject" but I thought I would offer a way to get to the

goal of good tone.

miketheboilerguy@aol.com

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#4
In reply to #2

Re: pipe tuning formula

06/20/2008 9:25 AM

I'll be using whatever Home Depot has. I'm sure there will be a youtube video when all is done.

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#3

Re: pipe tuning formula

06/20/2008 12:00 AM

Hi bhankiii

Why use copper? Have you just got some laying around? If you would use brass or SS you might get a much nicer sound. Or use all three to make it special. The tuning aspect will stay but your sounds will be more varied. Enjoy. Ky.

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#5
In reply to #3

Re: pipe tuning formula

06/20/2008 9:27 AM

I want to use copper because the rest of the fountain is copper - or at least copper colored. And I use copper quite a bit in my home decor. Besides, it's easy to find and easy to work with.

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#6
In reply to #5

Re: pipe tuning formula

06/20/2008 2:27 PM

Well I guess it's a matter of visually esthetic taste with you. So the copper looks nice and function follows form, okay.

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#7
In reply to #5

Re: pipe tuning formula

06/20/2008 4:16 PM

hello bhankiii:

if you are bent on using copper pipes, can you not fashion a brass band where the chimes will strike. I fear if you do not, the copper will be dented and not last long at all.

How about using ss, or any other hard metal which gives a good sound (copper tends to make a rather dull sound), and get it copper plated?

As to pipe size for scaled notes try the http://sunzi1.lib.hku.hk/hkjo/view/26/2601627.pdf

Go past the first bit of this pdf and you will come to 'The Theory and Practice of Tuning Pipes'.

Hope this helps.

jfmfit

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#8
In reply to #7

Re: pipe tuning formula

06/20/2008 9:20 PM

Thanks, but that's really more about air pipes - like a flute. I'm concerned with the sound that the metal makes when struck.

I don't think my copper pipes will take too much of a beating. The copper floats will only be propelled by the force of the waves in the pond.

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Anonymous Poster (1); bhankiii (4); jfmfit (1); ky (1); miketheboilerguy (1); Steve S. (1)

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