Reply by crank49

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Posted on Anyone try upgrading their HF DC impeller?

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4032 posts in 2997 days

#1 posted 05-03-2013 01:22 AM

Backward inclined impellers have a wider tollerance for loading.
They trade a little volume capacity for stability.

The forward inclined impellers, like HF uses, get a little more air flow from a given horse power motor but can more easily be overloaded.

Overload situations to be careful of with forward inclined impellers, like HF, are running without a bag, opening up the inlet to let more air in, running on a cold day.

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