Re: [Killietalk] PVC air manifold vs. lots of airline tubing

[Fred Behrmann <athensaquatics at juno_com>]

  Nicely said, You get what youse pays for! Noise suppression manifolds
can be constructed very cheaply for blower units , also. My blower has
been running for 8 years now and Rosario LaCortes even longer. We both
have back ups and have Never had to use them.   Sincerely, Athens
Aquatics  
On Fri, 29 Dec 2006 00:09:21 -0500 "Bill Shenefelt"
<william_shenefelt at verizon.net> writes:
> Hi Lee;
>  As you stated the linear wins hands down "from the Getgo".  Don't 
> run out 
> and spend $100 on two dynamasters to save paying an extra $89 for 
> the 
> equivalent in a Jehmco.  If you already have something that is 
> working, it 
> is a matter of pay me now (up front) or pay me later, and longer.    
> A nice 
> argument to convince the wife that spending some cash will make the 
> electric 
> bill drop and it will pay for itself in a few years.  Just hope it 
> does 
> enough for her to notice.  Add in the lack of noise if that bothers 
> her at 
> all and you just might win out.  My wife ignores me when it comes to 
> my fish 
> and fish expenses so I tried one of the big Jehmcos (120)  hoping it 
> would 
> handle things.  But being a slob, I probably was leaking here and 
> there, had 
> some unused valves open etc and just one of the big Jehmcos would 
> not do it 
> for my setup.  Rather than go out and spend $900 for two of them 
> immediately, if and when my blower dies, I may just bite the bullet 
> and buy 
> two big Jehmcos but not just yet.  Two of them will draw nearly the 
> same as 
> my 1/3 hp blower.  I don't know the output vs. power consumption but 
> I would 
> assume that under load for decent pressure and volume, the factory 
> specs are 
> close.  If you are using only the air you could have produced by a 
> dynamaster piston, you are still paying for the full Jehmco output 
> and 
> energy consumption.   The cost per cubic ft produced does not 
> matter.  What 
> matters is the cost for the cubic feet needed.  Lower the used 
> output and 
> the pressure would go up so no savings in power there.  Drop the 
> backpressure too much and lower the load on the motor too much and 
> you get 
> heat instead of work, but still consume power.  Hate to think I 
> would stoop 
> to playing with valving to minimize power consumption with an ac 
> ammeter in 
> line and recording a consumption curve for it.   Were I to go to a 
> Jehmco 
> setup, I would do it for the long term maintenance, and lack of 
> noise.  Very 
> nice little units.
> Bill Shenefelt
> http://sheneskillies.com 
> 
> 
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> 
 
 
Sincerely,
Fred Behrmann
Athens Aquatics
37 W. Bridge Street
Catskill, NY 12414    Phone:(518) 943-2630
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