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Smittybuilt winches
Kleinchris,
This Smittybuilt winch uses a permanent magnet type motor. In all of the articles I've read on winches, they frown on these things. Series wound motors are much better.
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The new Smittybilt XRC-8 Winch encompasses all the best features you would want in a winch. Every XRC-8 (8000 lb) winch features a 4.1HP ---- Permanent Magnetic ------- Motor and a Planetary Gear System with 265:1 gear ratio that will deliver you power and reliability without hitting your pocket book.
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Please look into the differences between permanent magnet and series wound motors. I believe you'll find that the permanent magnet types have a very poor reputation.
Joel
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Smittybuilt winches
Kleinchris,
Up to about 3000 lbs pulling power, a permanent magnet type motor is fine. Above that, a series wound motor is much preferred.
The difference between the two types is very difficult to explain here, but I'll try.
In a permanent magnet motor, the field is constant. This means that the power doesn't change with the demand placed on it.
A series wound motor has a field that varies depending on amperage draw. The harder you work the motor.....the higher the current demand.......the stronger the field becomes.
There is a drawback to series wound motors. When under a no-load condition (free wheeling), the series wound motor tends to over rev. A permanent type motor won't do this.
Joel
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Earthwrks,
I tried to find something on the internet that would help answer your questions. One of my favorite internet sites is gizmology.net
Murf is correct, in that the gear box installed on the end of the motor's shaft will provide just enough resistance to prevent a series wound motor from destroying itself.
The link below will take you through the advantages and disadvantages of the various DC motors. While series wound motors are more powerful, hybrid motors have been developed to overcome their shortcomings.
This link will provide the answers to at least a few of your questions.
When you're done reading the info on the DC motors, please check out the other interesting things found at Gizmology.net It's a neat place.
Joel
Link:
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Kenny,
I always believe it best for a fella to discover the truth for himself......and preferably NOT the hard way.
Too bad it cost you a thumb for your excavator, though. hehehe.
Joel
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