Reply by REO

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Posted on Anyone try upgrading their HF DC impeller?

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928 posts in 2070 days

#1 posted 04-10-2013 11:30 PM

There is a lot to consider to be sure! what is the operating current draw of the present motor without any ducting either to or from the fan? I don’t believe the fan blade from grizzley was to heavy. it was trying to move to much air with the given power. the current is directly effected by the volume of air that it is moving and Inversely effected by pressure. it takes less current to run a plugged fan than it does to run an open one.different fan styles have different effects on pressure, volume and staying clean.
what part of performance are you hoping to make better? higher pressure(suction) or more volume. other things that change are the opening size and style. with the same fan housing and blade more air can be moved if there is a properly shaped inlet rather than a blunt square edge. also the amount of clearance between the fan blades and the entrance side of the housing is important. is the existing blade set to far back from the inlet surface. You may have seen where someone got lucky and found a “drop in upgrade” if you have please be sure to report your findings.

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