Re: [papercreters] MIXERS;

NO no it's just a little tip bent up lawn mower blade looking thing I got at a yard sale, but you did give me an idea to change the blade out to the one you found it might take some stress off the motor. How much and where and kiss is my best friend? oops wait a sec that chain may get clogged fast

 

Ken

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From: spaceman <Spaceman@starship-enterprises.net>
To: papercreters@yahoogroups.com
Sent: Wednesday, March 14, 2012 6:42 PM
Subject: Re: [papercreters] MIXERS;

I had to google brush blade and I got a picture of what looks like a circular saw blade with a chainsaw wrapped around it. Is this it?

So the bottom of your shaft fits into a hole in a 2x4 in the bottom of the mixer to keep it from flopping around much? That sounds uncomplicated and effective. I'm a big fan of KISS.

On 3/14/2012 7:26 PM, ken bolin wrote:

Oh ya you can not see the blade it is a 8in brush blade ,with a aluminum 3/8in shaft coupled to the 1/2in shaft on the motor, I use a shopsmith coupler I had.The Y is for easier clean out of the last 2in in the bottom of the barrel because the shaft sits on a 2x4.I just plug it in to a 15ft heavy duty drop cord as a switch, wobble is 1/2in at high RPMs and about inch at low unless it hits a phone book then it goes nuts (hence break down the book). I centered the shaft/motor/bottom plate hole with a laser so it's about dead center over all. It does get hot (but it's just a 1hp motor) so I plan when the moneys there to move up.

 

Ken

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From: spaceman <Spaceman@starship-enterprises.net>
To: papercreters@yahoogroups.com
Sent: Wednesday, March 14, 2012 6:07 PM
Subject: Re: [papercreters] MIXERS;

That looks nice and simple. Is your blade shaft coupled directly to the motor shaft (looks that way)? What is the purpose of the Y, just a convenient place to hang the wrench? How big is your blade? How do you turn it on and off? Do you get any wobble without a bottom support? Inquiring minds need to know!!!  

Ya want blueprints? Here Ya Go! In spite of the large legal disclaimers, with a shorter blade and an electric motor this one worked out OK, I just have to straighten the blade shaft before the next use.

spaceman

On 3/14/2012 6:24 PM, ken bolin wrote:

BOYS BOYS STOP VENTING and show some dang blue prints I am ready to build something lol.Draw it out on a napkin dang it and take some pictures, by the way this my latest (see attached) that's a 1 hp 110vt on top.

 

Ken

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From: JayH <slurryguy@yahoo.com>
To: papercreters@yahoogroups.com
Sent: Wednesday, March 14, 2012 2:46 PM
Subject: [papercreters] MIXERS;

It's a lot safer because I can build a completely contained unit that has no power cord to worry about.  One can have the batteries in a sealed battery box.  All the connections can be run inside sealed areas. 

Then roll the mixer, batteries, motor, mixing tank, and all, right up close to the worksite.  Configure an isolated on off switching system were the operator never gets close to the electricity, and neither does the water. 

I don't see that being done nearly as easily with an AC unit.

The idea of dragging a power cord around through puddles of slurry runoff sounds to me like a death wish. 

I think GFI protection is a great invention, but I don't want to count on it as a primary protection for my heart, only as a last resort emergency backup when things go terribly wrong.

spaceman wrote:
Why would you rather use a large DC motor over an AC one? The DC voltage used to drive that motor is as dangerous as the AC and in many cases more so because of higher amperages. Edison was a liar, read Nicola Tesla's work. For over 100 years that particular lie has been in the "common knowledge", that AC is more dangerous than DC. Both require good grounding systems and common sense. Knowledge of electricity is a definite plus.

With a DC motor you can run a low voltage, say 12 volts, but you are going to need large wires to supply the amperage required. Or you can use a higher voltage like 48 with smaller wires and a lower amperage. Basically the same idea with AC motors, you can run 110v, 220v, or even higher. Either way a watt is a watt and it takes close to a thousand of them to make a horsepower. Theoretically 746 but motors aren't 100% efficient, there are hysteresis losses and heat. Anyway, the point is that 5hp worth of DC power supply is not safer than 5hp worth of AC power supply. The energy is the same.

If you keep the motor out of the water and keep the water out of the motor and keep everything nicely bonded and grounded, up to standards, then either can be safe.

My electric barrel mixer has a 1hp 220v motor on it but the blade shaft is bent so it vibrates. I need tuits, too much else going on to fix it right now.






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