INCIDENCE settings

[Pat Hewitt]

I would like to learn more about incidence settings on our wings. I have a
chance to buy a plane that has preset settings such as O, .25, .50, or .75 but
how do I make the correct choice. I am sure the best is to have an just able
system but please lets not go there I just want to understand how you pick the
correct one.

Thanks

Pat Hewitt
Paola, Ks. 






------ Original Message ------
Received: 11:35 AM CDT, 09/30/2005
From: jonlowe at aol.com
To: discussion at nsrca.org
Subject: Backplate Pump for OS 1.60

After seeing the discussion about putting an OS 1.40 pump in the 
backplate of an OS 1.60, I got to thinking.  The OS 1.40 pump/backplate 
is over $150 from Tower, then you have to get a special 1.60 backplate 
for another $100 or so.  In the old days, Perry made special backplates 
with integral pumps for .61s.  I had one with a bad pump.  Perry 
doesn't make the backplates anymore, but they put in a new pump in my 
backplate for less than $50.  As long as we are thinking about making 
up special backplates, what about copying the old .61 design for the 
1.60, and sending them to Perry to have pumps put in?  This would 
certainly clean up the installation of the 1.60, eliminate a couple of 
failure points for the separate pump setup, and be a lot cheaper than 
using the 1.40 pump.  I have a couple spare old Perry backplates that 
could be used as samples for a machinist that I'd be willing to loan 
out.  Anyone willing to take this on?

Jon Lowe
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