Subject: Headers
From: Rotary Engine
Date: 11/17/2010, 5:59 PM
To: AAA Put this in the To box


Paul,

I have been trying to get the exhaust runners to 36" and end at the same
location.  What is more desirable having the tubes end at the same location
or both ending up 36" in length?  Space is tight and the slide throttle
being above does not help.  Thanks for any assistance.

Joe Berki
Limo EZ

A little of both :). It is probably better to be on the short
side and have both come out in the ejector throat in the same
place.

I assume you have NACA Report 818 so the area and length
ratios are correct. If done right it can have a significant
effect on cooling.

If you don't have it and cannot get it
from the NACA web site  I can upload it to the ACRE web site
and you can download it from there. Too big to publish.

Here are a couple of charts and a table from that report.

Paul Lamar


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