REFLECTOR:Mag Timing Slipped?
Ronnie Brown
reflector@tvbf.org
Tue, 10 Feb 2004 09:58:28 -0500
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Larry,=20
I think my problem is due to a loose screw holding the points. My I/A =
buddy checked the internal timing and it was off. There is good info at =
www.sacskyranch.com=20
I will reinstall and monitor my timing more closely. I was surprised to
find the error since the engine has been running flawlessly, =
compressions
are great 79/80 and the plugs were nice and clean.
Thanks
Ronnie
----- Original Message -----=20
From: Laurence Coen=20
To: reflector@tvbf.org=20
Sent: Monday, February 09, 2004 11:30 AM
Subject: Re: REFLECTOR:Mag Timing Slipped?
Ronnie,
Check the point gap. I seem to remember that in a Slick it is =
possible to have the point clamping screw bottom out if you use the =
wrong one or leave off one of the washers. =20
Larry Coen
Std. RG-E
----- Original Message -----=20
From: Ronnie Brown=20
To: reflector@tvbf.org=20
Sent: Monday, February 09, 2004 7:25 AM
Subject: REFLECTOR:Mag Timing Slipped?
I am doing my first condition inspection on my 173 Elite RG and all =
is looking great except:
When I checked my Slick mag timing, I found it at 32 degrees BTDC. =
Since our Cessna 172 in 10 years never had the timing reset except for =
the 500 hour mandatory inspections of the Bendix dual mag, this has me =
scratching my head. The timing on the Jeff Rose has not changed.
The retaining bolts were tight, an internal inspection of the mag =
reveals nothing (however, I have not checked the internal timing yet) , =
and I KNOW the timing was set correctly (25 degrees BTDC) on this =
Lycoming IO360. I had a low static RPM - 2100 rpms - so we checked =
everything before changing the prop. Any worn parts in the gearing =
would cause the timing to be more retarded.
Is it reasonable to think that the points could wear enough to cause =
the timing to move that much?
Or any other ideas?
THANKS
Ronnie Brown
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<DIV><FONT size=3D2></FONT><FONT size=3D2></FONT><FONT =
size=3D2></FONT> </DIV>
<DIV><FONT size=3D2><FONT size=3D3>Larry,</FONT> </FONT></DIV>
<DIV><FONT size=3D2></FONT><BR>I think my problem is due to a loose =
screw holding=20
the points. My I/A buddy checked the internal timing and it was =
off. There=20
is good info at <A =
href=3D"http://www.sacskyranch.com">www.sacskyranch.com</A>=20
<BR><BR>I will reinstall and monitor my timing more closely. I was =
surprised to<BR>find the error since the engine has been running =
flawlessly,=20
compressions<BR>are great 79/80 and the plugs were nice and=20
clean.<BR><BR>Thanks<BR>Ronnie<BR><BR></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dlwcoen@hotmail.com =
href=3D"mailto:lwcoen@hotmail.com">Laurence Coen</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dreflector@tvbf.org=20
href=3D"mailto:reflector@tvbf.org">reflector@tvbf.org</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Monday, February 09, 2004 =
11:30=20
AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: REFLECTOR:Mag =
Timing=20
Slipped?</DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2>Ronnie,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Check the point gap. I seem to =
remember=20
that in a Slick it is possible to have the point clamping screw bottom =
out if=20
you use the wrong one or leave off one of the washers. =
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Larry Coen</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Std. RG-E</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dromott@adelphia.net =
href=3D"mailto:romott@adelphia.net">Ronnie=20
Brown</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dreflector@tvbf.org=20
href=3D"mailto:reflector@tvbf.org">reflector@tvbf.org</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Monday, February 09, =
2004 7:25=20
AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> REFLECTOR:Mag Timing =
Slipped?</DIV>
<DIV><BR></DIV>
<DIV><FONT size=3D2>
<DIV>I am doing my first condition inspection on my 173 Elite RG and =
all is=20
looking great except:</DIV>
<DIV> </DIV>
<DIV>When I checked my Slick mag timing, I found it at 32 degrees=20
BTDC. Since our Cessna 172 in 10 years never had the timing =
reset=20
except for the 500 hour mandatory inspections of the Bendix =
dual mag,=20
this has me scratching my head. The timing on the Jeff Rose =
has not=20
changed.</DIV>
<DIV> </DIV>
<DIV>The retaining bolts were tight, an internal inspection of the =
mag=20
reveals nothing (however, I have not checked the internal timing =
yet) , and=20
I KNOW the timing was set correctly (25 degrees BTDC) on this =
Lycoming=20
IO360. I had a low static RPM - 2100 rpms - so we checked =
everything=20
before changing the prop. Any worn parts in the gearing would =
cause=20
the timing to be more retarded.</DIV>
<DIV> </DIV>
<DIV>Is it reasonable to think that the points could wear =
enough to=20
cause the timing to move that much?</DIV>
<DIV> </DIV>
<DIV>Or any other ideas?</DIV>
<DIV> </DIV>
<DIV>THANKS</DIV>
<DIV>Ronnie =
Brown</DIV></FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
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