flyrotary@lancaironline.net Mailing List Archive

Message

Kevin, I think it was based on the fact that aluminum will generally fail sooner than steel if it is flex or loaded and unloaded repeatedly in the same manner

However, its questionable how much flexing a stationary fitting does. I understand that you will find aluminum fittings on the newer Lycomings.

The alloys have improved considerably. I mean they make structural landing gear parts out of aluminum on the big airplanes and those parts do take a hell of a beating. So could be more of an old wives tail than fact. Just my opinion of course.

Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC

----- Original Message -----

From: kevin lane

To: Rotary motors in aircraft

Sent: Monday, August 23, 2004 10:08 PM

Subject: [FlyRotary] Re: Sorry Rusty - no bind

please don't take this as being critical, I'm just asking - is it true or not that engine fittings should be steel, not aluminum? or is that just a myth? does aluminum fatigue faster than steel? what do certified piston planes use?

Kevin Lane Portland, OR
e-mail-> n3773@comcast.net
web-> http://home.comcast.net/~n3773
(browse w/ internet explorer)

----- Original Message -----

From: Russell Duffy

To: Rotary motors in aircraft

Sent: Monday, August 23, 2004 5:53 PM

Subject: [FlyRotary] Re: Sorry Rusty - no bind

Sorry to disappoint you, Rusty (actually, not sorry at all {:>)).

Neither am I. Actually, I wish you'd hurry up and get that dang thing running. I could've sworn you were retired... :-)

I am sure I am to plug the center hole of (the rear drain hole of the 2.17). But, to make certain I have sent Tracy and e mail to confirm it. Better than finding out in the air I was wrong {:>)

I believe you're right, and you might not get an answer from him since he's on vacation. I'll attach a few pics, for your amusement. One shows the bottom of both drives. The drain holes on the C drive are of course behind the tape.  The other two pics show the B, and C drives for comparison.

Cheers,

Rusty (sometime before I retire Ed <g>)

>> Homepage: http://www.flyrotary.com/
>> Archive:   http://lancaironline.net/lists/flyrotary/List.html