Changing a gas motor to electric on a mortar mixer

[mx842]

I just came across an old mortar mixer cheap but it doesn't have an engine on it. I was wondering if I could convert it over to an electric motor. I have a 5Hp electric motor I could use. The only problem is that the motor is 3 phase which I don't have but was thinking about building a phase converter out of another electric motor I have to run the mixer motor.

I know it sounds like a lot of trouble to do this but I have these electric motors and I don't have a gas motor with gear reduction on it. I was just wondering if anyone else has ever done this before and if so how did you gear the electric motor and in the end how did it work out?

 

[BHD]

should work, the three phase motor on a static converter is about 2/3'S of plate rated power.

the static converter energies the third winding to act like a starter winding and then the motor runs on the other two windings,

I ran a lot of shop tools on static and rotary converters until I got three phase,

since the mixer should not need to be started under load, the static converter should work, if you plan on starting it under load then a rotary converter should be used, (the converter needs to sized to the motor ran,

 

[mx842]

should work, the three phase motor on a static converter is about 2/3'S of plate rated power.

the static converter energies the third winding to act like a starter winding and then the motor runs on the other two windings,

I ran a lot of shop tools on static and rotary converters until I got three phase,

since the mixer should not need to be started under load, the static converter should work, if you plan on starting it under load then a rotary converter should be used, (the converter needs to sized to the motor ran,

Yeah, that's what I was planing and hopefully once I get it spinning the paddles it will keep going until the batch is done then shut off, clean out then start over. I need to check what the motor RPM's are to see how much I need to slow it down or speed it up. I guess I can do that with pulley size to make my own gear reduction.

I guess I could do that with a gas motor too but everybody I have talked to says I have to have a engine with a gear reduction drive on it to get it to work right.

 

[buickanddeere]

You could even make it reversing so the internal paddles push the mix out.

 

[Capricious]

Engines with the 6 to 1 reduction are not that expensive:

Briggs & Stratton 800 Series Horizontal OHV Engine with 6:1 Gear Reduction — 205cc, 3/4in.dia. x 2in.L Shaft, Model# 12T152-0049-F8 | 121cc - 240cc Briggs & Stratton Horizontal Engines| Northern Tool + Equipment


Gear Reduction Engines




Selling the electric motor would pay for some of it.

 

[mx842]

Yes that is an option of-course but I hate to buy a new engine for something like this. I already have the 2 motors so why not use them. Have you tried to sell anything like that these days. I had these and a bunch of other stuff on Chaig's list for months and all I got was ten thousand calls from people that wanted to do me a favor and take them off my hands so I didn't have to haul them to the dump. On top of that I got my account high jacked and before it was all over I ended up with to viruses and almost lost my whole computer. In the past I have sold and bought a lot of stuff on there but it's gotten really bad with all the scams people run on there.

I'm not saying I never would buy one of those motors on it I would rather use what I have.

 

[Capricious]

"...Have you tried to sell anything like that these days. I had these and a bunch of other stuff on Chaig's list for months and all I got was ten thousand calls from people that wanted to do me a favor and take them off my hands so I didn't have to haul them to the dump. On top of that I got my account high jacked and before it was all over I ended up with to viruses and almost lost my whole computer...."




sorry.

 

[bigdeano]

I recently got a 10 horse 3ph 230 1750 motor running on 1ph. I used a total of 220 uf run caps and 900 uf start caps from one hot leg to the open leg. The start caps are hooked thru a potential relay (6X560). Grainger has it on clearance sale. It takes about a second to reach full speed and runs smooth and quiet. With a 5 horse motor you only need half the caps. I bought the run caps at Surplus Center.

It's running a large car alternator that I'm using as a dc welder. Works very well.

 

[bigdeano]

Duplicate post for some reason.

 

[skylarkguy]

Why not make it PTO powered and run it off your tractor?