Jerry Hey wrote:

Paul,

Seeing Richard Sohn's  report on the single rotor in which he achieved
an acceptable idle with a six inch intake forces me to the conclusion
that I need a test stand badly.
  Granted a test stand is a long way from a dyno, but still a lot of
intuitive data can be gathered.  We can observe static rpm performance
with different length intakes for example.

What I am looking for is a simple, cheap  stand that I can test run my
engine on.  I am hoping that someone has already designed this and has
some practical experience running an engine with prop  on the ground.
Can anyone provide a schematic of what a test set up would look like.
Where is the fuel.  the instrument panel,  etc.   I have  plenty of
room next to my shop and could easily build a shed roof over the test
set up.

Richard Sohn, come to think of it, must have a test stand.   Maybe Lynn
does too.  Tracy?   Photos, plans, advice?   All would be appreciated.

Thanks,  Jerry

It is almost as easy to make a dyno as it is to make a test stand.
This would be a pieces of cake for you. You don't really need to measure
the trust. That is handy to test props but not really necessary.

You did just get that message I just sent did you not?

Everett Hatch used this type of dyno and I think Power Sport still uses it.

Paul Lamar

 
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