PhD I always get the cases wrong.
Similar to kWh but that one I remember.
From: Chuck McCown via AF
Sent: Monday, May 22, 2023 10:59 AM
To: AnimalFarm Microwave Users Group
Cc: ch...@go-mtc.com
Subject: Re: [AFMUG] Air vac
I know two venturies in series will increase the air flow, and airflow is the
name of the game. Got get the spoils moving fast.
I have come to learn that suction/vacuum is analogous to voltage and CFM is
like current and CFM X vacuum = a units called airwatts.
That is the energy in the air stream and that is what you want to maximize.
Orifices and restrictions are like resistance and you can actually use the ohms
law ratio to calculate this stuff.
So more PSI into a venturi does not create more airwatts as each venturi has an
optimal pressure and flow. I am studying this exact issue with some German
pHds that wrote a white paper on these things.
I think I have a call with them tomorrow.
From: Steve Jones
Sent: Monday, May 22, 2023 9:34 AM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] Air vac
I use an auger to dig them, vac to clear them. Same thing with the
airspade/airvac combo. I dont do posts less than 48 inches. Whats really
pushing this is the last project was installing 2 inch duct for the power
company, the old primaries were failed concentric, as it turns out the stuff is
dangerous, it faults on its own, jabbing shovels and post hole diggers at it is
a recipe for disaster and water is its mortal enemy. Im chasing more contracts
with that power company to replace more of that concentric. Im not gonna get
the cutting power of water, but ill have dry spoils to put back in the hole.
I wish I hadnt done all the drugs, id be able to understand the maths on this,
im wondering if I cant split the input and double the lift with two venturis
On Mon, May 22, 2023 at 9:23 AM <dmmoff...@gmail.com> wrote:
So you dug post holes with a shop vac? Is it sandy where you are? I feel
like I hit about 10,000 rocks per post hole. Many too big for a vac hose, and
many just big enough to clog it.
I might have to try it anyway.
From: AF <af-boun...@af.afmug.com> On Behalf Of Steve Jones
Sent: Sunday, May 21, 2023 6:12 PM
To: AnimalFarm Microwave Users Group <af@af.afmug.com>
Subject: Re: [AFMUG] Air vac
I'm having better luck with the prototype than a shop vac already, just
trying to improve the lift. Toting a generator isnt really an option.
I also just have a shop vac hose, if theres moisture the dirt collects on the
sides with a shop vac and loses lift. That's how I've always dug post holes.
On Sun, May 21, 2023, 3:53 PM Chuck McCown via AF <af@af.afmug.com> wrote:
I think you would have better luck with a strong shop vac and a 30 gallon
drum. I have seen guys do that and it worked OK. Air powered vacuum producers
work but I don’t know how well. Sometimes they are called eductors or
ejectors.
Take a look at this one:
https://www.globalindustrial.com/p/2-in-line-vac-only-aluminum?infoParam.campaignId=T9F&gclid=CjwKCAjwgqejBhBAEiwAuWHioM68tuz0PVLcvHFy4CRspRtvhy5gEQQryMrUkOoNv4MVeUTRSWTkvxoCrv8QAvD_BwE
Best Regards,
Chuck McCown
McCown Technology Corporation
8401 N Commerce Dr
Lake Point, Utah 84074
801-250-9503 Office
435-830-4306 Cell
www.mccowntech.com
www.microtrench.pro
www.terabitnetworks.com
From: Steve Jones
Sent: Sunday, May 21, 2023 11:56 AM
To: AnimalFarm Microwave Users Group
Subject: [AFMUG] Air vac
I need advice from you nerds.
I'm a broke joke, so hydrovac isnt in my budget. Besides, I want dry spoils
to put back in the hole.
This revision works for venturi. I have multiple size reducer but right now
I'm just doing 3/4 to to inch. The 3/4 to 1 then 1 to half back to 1.5 for the
venturi side seemed to have the best lift, but the hardware store didnt have
everything, so it's all in 2 inch right now
I'll dump to a 2000lb peanut sack if I can find one, but for now I'll just
use a 30 gallon drum and dump on the mega movers.
This is for use in conjunction with the airspade I did have some coin to
get.
Venturi math gets complicated and I'm full retard so I need to find he best
ways to increase negative pressure and where to drill the ports.
I also wonder if theres an option to recapture the exhaust into the
airspade.
I need you nerds to go full geek.
If I can get valves correct I'll have the local machinist make me a couple
that are pressure rated.
This is to mimic the airvac I also cant afford.
This proof of concept has the lift to clear potholes and handholes, but I
need to clean it up and get more efficiency.
A side discovery is that this setup is perfect for blowing straw and seed
with glue
----------------------------------------------------------------------------
--
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
--
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
--
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
--------------------------------------------------------------------------------
--
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
--------------------------------------------------------------------------------
--
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
--
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
