Quote:
Originally posted by bigben2k
The difference is that this particular Johnson unit (Co30) has an impeller that's directly driven by the motor, where the Swifty's MCP600 is magnetically driven.
So it's more efficient to drive the impeller directly, but it adds to the complexity: everything has to line up right, otherwise it'll leak, as this unit seems to be.
So if you can handle the lack of reliability of the Johnson (and are brave enough to experiment with a patch or repair), then the Johnson is for you. Otherwise, stick with the trusted mag-drives.
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Or, if you can afford it, the mag-drive Johnson CM30P7-1.
Same performances as the CO30, but no leaks
Price is 268US$ here in Belgium...
CD
