Re: home made wind tunnel

["dad land" <eaglemot@bellsouth.net>]

very good question!will a low speed tunnel still give us usable
data?.........how 'bout a smoke wand, a manometer for high/low pressure
areas/ and a scale tied to the front of the vehicle to measure the pull of
the wind and differencves of measure after changes made?  .dad
> So what is the difference in usable data between a low speed tunnel (say
70
> MPH) and a high speed one at (125 to 150 MPH)?
>
> On a homemade (low speed) tunnel what (affordable) instrumentation would
one
> need? Example what is needed to measure MPH if that's really important to
> know. What type of simple strain gauge set up would be needed for drag and
> down force measurement?
>
> John

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