Jerry Hey wrote:

Here are the results of the static load test.  The Schertz beam is .063
mild steel.  The unsupported section is 30 inches. Using feeler gages
between the .5 inch thick steel plate and the top of the Schertz Beam,
it was determined that at 6.5" from the center  the beam deflected .012
Inches.   This was not visible to the eye.   Mild steel seems to be
strong enough to do the job.  Of course, we are planning on using 4130.
  Jerry

Excellent work Jerry. Thanks a bunch for doing this. The thing about mild
steel
is the fatigue life. If there is any vibration it is likely to crack long
term.

Paul Lamar


Is there a big load difference between having the beam at this location vs.
having the load carried at the PSRU mounting plate?  In my application,
having this mount closer to the engine will be a lot easier (a pusher/pylon
width issue).

Also, is there a "best price" source for the Barry mounts who will sell in
small quantities?  The ACRE link to one source doesn't work.

Scott Gettings

You can get them from McMaster Carr but they don't carry all dash numbers.
Go to the Barry Controls web sites and look up the list of distributors.
If that dose not work call them and get a distributor in your area.
They should be about $7.95 each which should not bankrupt you.

A 2002 -11 should be about right.

BTW Lycoming dynafocals are close to $100 each.


Paul Lamar
 
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