[DeTomaso] Flex-a-lite question

[Jeff Cobb]

On Feb 23, 2014, at 1:04 PM, Larry Finch wrote:

>   All,
>   I've come to the conclusion the Hall Pantera Meriah fans are getting


> This tells me the fan blades are expected to
>   perform whether rotating CW or CCW. But I've always heard blades are
>   optimal for one direction only, and show reduced efficiency when
>   rotating opposite to the intended function.
That is true, when a fan blade is designed to be used in opposite directions its efficiency is lower and most of the time noisier. The convenience of a dual flow fans overwhelms its efficiency. Of course the s shaped blades are quieter.

Jeff Cobb
Cell 225-907-4514
www.liveoakconcours.org				


-------------- next part --------------
   On Feb 23, 2014, at 1:04 PM, Larry Finch wrote:

     All,
     I've come to the conclusion the Hall Pantera Meriah fans are getting

   This tells me the fan blades are expected to
     perform whether rotating CW or CCW. But I've always heard blades are
     optimal for one direction only, and show reduced efficiency when
     rotating opposite to the intended function.

   That is true, when a fan blade is designed to be used in opposite
   directions its efficiency is lower and most of the time noisier. The
   convenience of a dual flow fans overwhelms its efficiency. Of course
   the s shaped blades are quieter.

   Jeff Cobb
   Cell 225-907-4514
   [1]www.liveoakconcours.org

References

   1. http://www.liveoakconcours.org/