Johnny4

Swapping motors on dust collector

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Hey all,

Newbie mechanic question here. If I wanted to upgrade my dust collector (Supermax 1 hp) to a 1.5 hp, is it honestly as simple as getting a new motor, or is are there a bunch of steps that must occur in between? My dad seems to feel that you just “put in a different motor and wire it up.” He also comes from a generation of DIYers

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I'm not an expert on moving air, but I think the impeller and housing are sized to be appropriate for the motor size.  Going from 1 to 1.5 hp the impeller may be too small.  Others with more definite knowledge will, hopefully, chime in.

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If the original collector had the blower & motor matched properly, then a bigger motor will do nothing at all to increase performance. Does it ever trip out on overload? If the answer is no, then a bigger motor will do nothing for you.

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Just out of curiosty.  What if the new motor had a higher RPM??  Would that increase the airflow without damging other parts?

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It is possible to vary airflow by changing the speed of the impeller, but it is not a linear relationship. IMO, the most cost effective way to improve your DC performance is to list it on CL and buy a better one.

  • Haha 1

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19 hours ago, wtnhighlander said:

It is possible to vary airflow by changing the speed of the impeller, but it is not a linear relationship. IMO, the most cost effective way to improve your DC performance is to list it on CL and buy a better one.

Made me laugh but very true!

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Yep. The only other option that would actually help is to swap the bag for a cartridge filter, which will give you more airflow. If you've got the space, a bigger DC is probably cheaper.

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Thanks everyone. I figured this was not a “plug and play” situation. Hope all is well where you are!

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