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Re: Lycoming 0-145
Posted: Mon Sep 13, 2010 13:51
by Dan1940Chief
Grumps wrote:The 65LB is also the military L-3G and is the same as the 50/65LA except minor structural changes and engine installation. The 65LB (L-3G) is authorized for the Lycoming 0-145-B2 and the O-145-93. Check Type certificate A-702.
Doug
Interesting... maybe I should paint it green...
Re: Lycoming 0-145
Posted: Mon Sep 13, 2010 15:43
by Rodney Zapf
Grumps wrote:The 65LB is also the military L-3G and is the same as the 50/65LA except minor structural changes and engine installation. The 65LB (L-3G) is authorized for the Lycoming 0-145-B2 and the O-145-93. Check Type certificate A-702.
Thanks for clearing that up! I have the 1941 Chief 65 LB.
Doug
Re: Lycoming 0-145
Posted: Fri Jan 14, 2011 00:43
by Rodney Zapf
Some time ago I published a post that had to do with the static thrust of the 0-145 measured with a scale. My 0-145 with a 70" X 36" prop would pull 250 lbs of static thrust on a 78 degree day. I recently purchased a 70" X 32" prop and measured the static thrust today (similar temp and Baro.) The new prop developed 283 lbs of static thrust. It sure makes a difference on climb-out, much much better! I run it at about 2400 rpms for cruise, This prop will make 2600 rrrr's if I let'r go! As you can tell, I am really happy with the change. Rod
Re: Lycoming 0-145
Posted: Fri Jan 14, 2011 11:44
by joea
Rod,
Funny thing is that it even varies from one prop to the other. Friend of mine, Gareth Gilson, has a Sensenich wood prop on his Sedan. He needed to get a second prop to save the original, which was on the airplane when delivered new. The second prop is the same size, model and pitch yet he insists that you can feel a big difference between the two.
Glad you found one that works well with the plane and engine!
Joe A
Re: Lycoming 0-145
Posted: Mon Jan 17, 2011 14:42
by Rodney Zapf
Due to minor warpage etc. I can see where it would vary from prop to prop even with the same original pitch and diameter. I was certainly happy with my results and it was nice to be able to "back-up" the results with numbers. Rod
Re: Lycoming 0-145
Posted: Tue May 17, 2011 19:13
by Rodney Zapf
Dudley wrote:Welcome Rod,
Others will chime in on the technical question you asked. At least one 65LB and possibly others were purchased by the Army directly out of the civilian production line. They had the Lyc 0-145-B1, B2, or B3 engines. If yours has serial # L-1018 or higher it may be a legitimate Army L-3G. Do you know the early history of your aircraft? If yours is not in that group I apologize for making you salivate. Dudley
The engine number appears to be 1884 and is located on the placard located on the front of the crank case.
Re: Lycoming 0-145
Posted: Wed Feb 08, 2012 13:45
by Dan1940Chief
Here's an O-145 question:
I have one Rocker Box cover stud with a few missing threads. Castle nut can be secured, but not torqued enough and so there is a nuisance oil leak.
So here's the question: Can I manufacture a suitable replacement for this stud by cutting the head off a 10-32 Machine screw?
Re: Lycoming 0-145
Posted: Wed Feb 08, 2012 16:08
by Paul Agaliotis
Dan,
You can modify the hardware to suit your purpose. Generally the hardware is pretty standard, and you might find it at a good supply house. Where it starts to get weird is when the studs start stepping and you need 1/4-20 stepped to 10-32. Some are standard but most are special to each manufacturer.
Paul