Mailing List lml@lancaironline.net Message #27632
From: Gary Edwards <gary21sn@hotmail.com>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: Re: Propeller for L 235/320
Date: Sun, 16 Jan 2005 12:06:32 -0500
To: <lml@lancaironline.net>
I am introducing a question from a friend , who doesn't speak English,owner of a Lancair 235. He changed his engine ,installing a Lycoming O 320 D3G in lieu of the O 235.
The propeller for the O 320 D3G was initially a three blades ,constant speed ,made by Arplast,but he is having some problems with it , as it is a prototype.
He has the possibility to get a Hartzell propeller,type HC-C2YL-1BF,coming from a Lyc. O320-D1F and asks if this propeller can be cut to 70" and fit his  
L 235/320,cruising at a mere 170/180 KIAS.
Has anybody some advice about that problem? Waiting for reading from you , propeller specialits. 
 
 
 
I recently put a MT 3-blade prop on my 235/320.   It has a built-in 4" extension and fit perfectly.  It is 63" in diameter and I feel that the ground clearance is minimal.  Remember that the 235 airframe is closer to the ground than the 320.  No way would I put on a 70" prop.  
 
With a prop as short as mine, I was told that a 3rd blade is necessary to handle the horsepower of the IO320.
 
Bob Belshe
 
 
I am with Bob on this one.  I have 64" prop on my 235/320.  With this prop, and the nose gear strut pumped up a little extra (3" showing), there is 8" of prop to ground clearance.  With a 70" prop, there would only be 5" of ground clearance. 
 
That is not good.
 
Gary Edwards
LNC2 N21SN
 
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