Will this motor work with a coote?

Thats a 3 phase motor. You have single phase. You cant use it unless you have a static or rotory phase converter. Your better off finding a single phase 110 volt motor. Where did you get it?

Its also a C-face motor, that means it has no mounting base so your mounting options are limited.
 
It will work, but 3450 rmps may be too fast for amateur grinding, I would suggest gettin ga 1hp 1750 rpm 110volt baldor motor, and either sell this one or save it for a future high powered setup. For it to run you would need a 3 phase 220volts input, and at 1.5 hp you would probably finder it better to call an electrician to install the high voltage line, rather than buying a phase/voltage converter.
 
You need a phase converter or vfd for it, you might be able to find one used and have a really nice setup cheap.
 
Interesting that you bring this up kuz I'm at this point also and have discoverd that a vfd makes this motor very versatile....I'm with AcridSaint that this is a keeper and worth using! Get an electrician to show you how to hook it up!
Bill A.
 
Just buy a 1-2 HP TEFC Single Phase Motor. Try 1725 RPM instead of the 3450 RPM in my opinion. I run my coote on a 1 HP TEFC Motor which should run around 170 and up or a 1.5-2 HP Motor. Grizzly Industrial carries excellent motors.

http://www.grizzly.com/products/searchresults.aspx?q=motor

3 Phase 460 Volt is generally for industrial buildings. I doubt you're ever gonna find that in a house. Sometimes you can't even find 220 volt in a modern house!

And get the step pullies from Norm Coote as well to change speeds!!!! Don't wanna grind really fast and you'll burn the metal real quick.
 
65535 said:
It will work, but 3450 rmps may be too fast for amateur grinding, I would suggest gettin ga 1hp 1750 rpm 110volt baldor motor, and either sell this one or save it for a future high powered setup. For it to run you would need a 3 phase 220volts input, and at 1.5 hp you would probably finder it better to call an electrician to install the high voltage line, rather than buying a phase/voltage converter.
Click to expand...

A 3 phase line installed in your house should run about $30,000. ( yes, $30,000!)
You could buy alot of belts for that. A rotary phase converter runs about $345. http://www.americanrotary.com/rotary-phase-converters.html

You can run multiple motors on one converter as long as they are not bigger than what the converter is rated for.
I have been using a rotary phase converter to run my Bridgeport for the last 3 years and have had no problems.

Michael
www.adammichaelknives.com
 
But at the cost of $345 bucks + the initial $300 bucks he used to buy the motor, he could just return the motor and buy a 110-220 volt single phase and use the rest for sanding belts! Which aren't cheap either 2-10 bucks a belt depending on the belt. Average is around 3-4 bucks. Just don't buy a Harbor Freight motor!

I was recommended a 1725 RPM motor by Norm coote with step pullies. That is already on the fastest setting with the pullies more fast than you will ever need to be able to grind. i'd suggest using the lowest setting to practice and get good on. I guarantee you'll fry your blades if you put the 3450 RPM motor on it (especially direct speed).
 
I don't think he bought the motor, I got the impression he came upon it. He'll be able to beat that $345 price tag if he shops around the used market. If he gets a VFD he's already got what most makers want. Nothing wrong with a 3-phase/vfd combo.

Add: The Grizzly runs at 3600 RPM with an 8 or 10" wheel, so I don't see it being any different. Folks do complain about it being fast, but there are a number of people who are very happy with them. With a VFD or pulleys this will not be an issue anyhow.
 
My point was that its not an option to have 3 phase run into your house.

Check Ebay for rotary phase converters or VFDs and you would have one hell of a setup with that motor.
I would see what a VFD would run for that motor and go that route.

In fact, Ive been looking for a 3 phase baldor to run with the VFD that I have sitting in my basement.
 
Acrid is correct, I came across this motor free of charge. Dont ask. Now then the VFD (Im not sure what it is, does, or looks like) may be obtainable for the same low price as the motor. :)

I was not aware that it was a 3 phase when I got it, it sounds like that wont be an issue with the addition of the VFD?

On this page http://www.cootebeltgrinder.com/Specifications/index.html the recommendation is for a 1 hp motor running @ 3450rpm.

Adam care to sell the VFD if I cant find one? Or perhaps youd like to buy this motor I have? Its very nice (but HEAVY).

This grinder will be my primary knife machine... my centerpiece if you will (unless my wife breaks down and lets me get the Tormach! Oh how nice would that be?! For the lighter stuff and finishing Id probably whip out the 1 X 30 Delta that I am currentley useing.

Anyone ever build there own grinder from the ground up?

Please any and ALL info good bad or ugly will be appreciated.
 
Strigamort, could you clarify something for me, please? Do you have household 220V available? Sorry if I'm missing it. Thanks.
 
Unless you have a phase converter, stick to single phase motors running @ 1750 RPM.

I'd recommend this one:

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=4107

It's made in the USA and you get 1.5 HP for $139.99. It's also a TEFC (totally enclosed fan cooled) motor.

If you have an electric dryer in the garage, chances are it's 220V (look for a huge plug -you'll know it when you see it). I'd run it on 220V instead of 110V. It's easier on the motor.

Best of luck! :thumbup:
 
do a search for Yaskawa on ebay and look at all the VFD's that show up.
you want 220 volts in and make sure the amp draw will work with your motor.
 
Strigamort said:
On this page http://www.cootebeltgrinder.com/Specifications/index.html the recommendation is for a 1 hp motor running @ 3450rpm.
Click to expand...

It says on the page a 1725 RPM motor is recommended for a 8 and 10" inch wheel models.

Unless you are in one hell of a rush to remove metal like MAD and realize the possibilty of destroying the temper on your blades after they have been heat treated, i wouldn't go with a 3450 or 3600 RPM motor. Those are just way too fast even with step pullies with your setup. The thinner the material you'll be sharpening after you heat treat, the quicker you're gonna cook the temper right out of it, especially if you're gonna be using a jig and grinding against the vertical plate. You will have better control over the steel if it's not moving quite as fast and believe me with a nice fresh belt, material will come off fast already at 1725 RPM with step pullies at the slowest setting.

I have heard that some professional knifemakers can't seem to control the grind on their blades when resharpening and they end up cooking the temper out of the blade, then repolishing out the burned area and acting as if there was nothing wrong with the blade.

Just trying to save you a lot of headache and a lot of junked blades :D

I say sell the motor that you have acquired for free and buy either a 110-220 volt motor at 1725 RPM Single Phase and forget all the VFD and spending all that extra money to get the same results as if you would have just bought the slower motor in the first place!
 
My 1725 RPM KMG has pulleys to deliver 3450RPM to a 4" drive wheel at 100% on the controller. That calculates to 3612SFPM at max speed. Sometimes the high speed comes in handy, but slower is good, too.

On a 10" drive wheel, using a 2" motor pulley and 5" drive pulley, a 3450RPM motor will deliver 3612SFPM. 1725 will thus deliver 1806SFPM, which is somewhat slow during some operations, but excellent for finishing.

It is always nice to have variable speed, but if I could only have a single speed, I would go with the 1725RPM. You can always crank it up somewhat with a step pulley. Obviously, if you could find a VFD and have 220V in your house it is the best of both worlds.
 
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