Mailing List flyrotary@lancaironline.net Message #45447
From: <DLOMHEIM@aol.com>
Subject: IVO Prop Info. (Have you checked this out Mike?)
Date: Sat, 14 Mar 2009 09:20:43 EDT
To: <flyrotary@lancaironline.net>
Mike Wills, et. al:
 
I have posted this info. on the list before but will do so again in case some haven't seen it before...
 
 
 
These go to the Ross Farnham's site in Canada and he has a lot of great information that documents his trials and tribulations in installing a Subie turbo in his RV-6A.  He has been flying behind a Subie with an IVO high pitch (45-105 blades vs. low pitch of 30-90) for a number of years and is therefore a great source to e-mail if you have questions on its' performance, routine maintenance requirements, etc.  He doesn't have a huge spinner on his installation but uses the stock one from VAN's and can still hit 181 kts. wide open and burning a bunch of fuel... 
 
The top link (above) discusses the IVO performance as demonstrated in a side by side flight comparison with a similar RV w/180 hp and Hartzell CS prop.  He found that the two were very similar in most of the profiles flown.  The bottom link is the "home page" to all his RV-6A information and I found his cooling discussions and intake / exhaust manifold fabrication pages a very interesting read...  
 
Doug Lomheim
9A / 13B 
OK City, OK
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