Mailing List flyrotary@lancaironline.net Message #30427
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Re: Rotor identification
Date: Sat, 25 Feb 2006 19:55:25 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Certainly do not look the same to me.  They may be the same weight but they do not appear to be the same compression by the appearance of the depression in each.  I agree if they are the same weight then the difference in compression may cause it to run a bit rougher than if they were the same compression but you should be able to fly home with them with no problem.
 
Ed
----- Original Message -----
Sent: Saturday, February 25, 2006 7:03 PM
Subject: [FlyRotary] Re: Rotor identification

In a message dated 2/25/2006 6:49:45 PM Eastern Standard Time, crayd@cableone.net writes:
I bought this pair of used rotors to build up a new motor so I can retrieve my RV-6. They look different in the compression chamber "tub" area, otherwise they look identical. They both are marked "D" for the weight code. Can anyone identify these and verify if they are OK to use ? I am thinking if the compression ratio is different, it may run rough even if they weigh the same. I remember Ed posting something about a way to measure the depth, but I cannot find it in my sea of saved emails.
 
Chuck Dunlap
N616RV 13B

 
Try this size using Irfanview.
 



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