david mccandless wrote:

Hi Paul,
just back from the Chapter meet, its 1130 pm here. Thanks for the
balance info and the diagrams and equations; not sure how I'll use them
but they sure look the part! Are they from K.Yamamoto's book? 

Yes they are.

Can I
start off with the simple knife edge balance you describe, and then try
it on a run up, no power of course and just see how it feels? 

You need to do those calculations as the simple way may develop
a "imbalance couple" and the engine might go into a whirl mode.

I have
been told that I should still use both balance weights as Jon Lauter
said, as this is essential for the dynamic balance. 

I totally agree with Jon on that.

Ian Beadle had a
problem with a cracked exhaust last week, but managed to limp home OK.
He now has a new exhaust with a small design change. 

Ian, go up on the wall thickness. Ed uses .140 inch (3.5 mm) thick SS and 
they don't even discolor let alone crack. :-)

Would very much
like a copy of your presentation notes for the OSH forum on cooling.

I don't have them done yet but there will be a bunch of slides.

BTW my chapter are into Bindoon for a flyin about the middle of July,
I'll take the Stinson. C U, Dave McC

Here is another picture I took of Dave's beautiful Stinson while I was in
Perth. I just love Stinson Voyagers.

Paul Lamar
 
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