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Re: NEON- Re: air supply problems & surge tanks
jim marshall wrote:
>
> I have just moved my air blower outside into its own shed to reduce
> noise in the shop. While doing this, I took the opportunity to
> increase the size of the plumbing between the blower and the manifold.
> In my old arrangement, the 2.5 outlet from the roots blower was
> immediately reduced to 1 pipe and a tee. The side outlet of the tee
> connected to the air regulator, while the straight thru connection
> enlarged to 3 PVC for the additional 40 feet to the manifold. This
> arrangement supplied a reasonably steady supply of air but was noisy
> and required adjustment to the mixtures on my cannon and cross fires
> anytime the ribbon fire was in use. My new configuration is about the
> same as my old one, except I stay at 2.5 until I hit the 3 PVC. Now
> I have plenty of air to drive all fires simultaneously.
>
> Unfortunately, the air supply now contains a 8 to 10 cps pulse that I
> suspect can only be dampened with a surge tank. Any thoughts?
>
> Assuming that what I suspect is correct, what are the physics of a
> surge tank? Is it just an empty tank or does it contain some
> arrangement of baffles to cancel out the modulation in the air stream?
> Could I build a surge tank from a 30 or 55 gallon drum?
>
> Any advice would be appreciated.
>
> JimJim, I use a 55 gal palstic drum that works great! You can get one
through a local supplier. Mine cost $5.00. Put it in line just after
the blower.
Dick