Today's Message Index:
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1. 08:15 AM - Re: Cont. C-145 lifter body, end geometry (Monty Barrett Sr)
2. 08:58 AM - FYI Cont. C-145 lifter body, end geometry (Randy L. Thwing)
Message 1
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Subject: | Cont. C-145 lifter body, end geometry |
Do NOT grind a conical taper on the lifters. They are ground with a 30
inch spherical radius. If they are not pitted I would not touch them
with anything except assembly lube. If they have any pitting whatsoever
they should be replaced and the camshaft ground. Aircraft Specialties
Services in Tulsa does excellent work. Their phone is
918-836-6872.
Monty Barrett
Barrett Precision Engines, Inc.
-----Original Message-----
From: owner-engines-list-server@matronics.com
[mailto:owner-engines-list-server@matronics.com] On Behalf Of Archie
Sent: Monday, June 09, 2008 5:57 PM
Subject: Re: Engines-List: Cont. C-145 lifter body, end geometry
Those surfaces are originally ground, at I believe, a 3deg angle
to facilitate rotation. I have a fully equipped racing engine shop,
but normally send them out to a shop already set up to do them.
Cheaper than doing them ourselves.
Archie
----- Original Message -----
From: Randy L. Thwing <mailto:n4546v@mindspring.com>
To: engines-list@matronics.com
Sent: Monday, June 09, 2008 1:30 PM
Subject: Engines-List: Cont. C-145 lifter body, end geometry
Hello all:
We're overhauling a C-145 Cont. in our EAA affiliated Flying
Club airplane.
Our Lifter bodies (cam followers?) are in near perfect shape
including the faces which engage the cam.
We want to just lightly touch the lifter faces for renewal.
Could someone please advise what coarseness (grit?) of stone or
wheel would be appropriate for this?
We have run a dial indicator over the face and it is not flat.
The center of the face is 3 to 5 thousandths higher than the edge.
This appears to be a straight, rather than radius (concave?) cut
across the lifter face. Do we have that right?
Can anyone advise what are the Continental specifications for
renewing the lifter face? Angles etc.
We have a lot of machine shop capability. Any help is greatly
appreciated.
Regards,
Randy, Las Vegas
Chapter 163 flying club.
href="http://www.matronics.com/Navigator?Engines-List">http://www.matro
n
ics.com/Navigator?Engines-List
href="http://forums.matronics.com">http://forums.matronics.com
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Message 2
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Subject: | Cont. C-145 lifter body, end geometry |
Do not archive
Thank you for responding Monty, exactly the info I needed and couldn't
find elsewhere.
Regards,
Randy, Las Vegas
----- Original Message -----
From: Monty Barrett Sr
To: engines-list@matronics.com
Sent: Wednesday, June 11, 2008 8:16 AM
Subject: RE: Engines-List: Cont. C-145 lifter body, end geometry
Do NOT grind a conical taper on the lifters. They are ground with a
30 inch spherical radius. If they are not pitted I would not touch them
with anything except assembly lube. If they have any pitting whatsoever
they should be replaced and the camshaft ground. Aircraft Specialties
Services in Tulsa does excellent work. Their phone is
918-836-6872.
Monty Barrett
Barrett Precision Engines, Inc.
-----Original Message-----
From: owner-engines-list-server@matronics.com
[mailto:owner-engines-list-server@matronics.com] On Behalf Of Archie
Sent: Monday, June 09, 2008 5:57 PM
To: engines-list@matronics.com
Subject: Re: Engines-List: Cont. C-145 lifter body, end geometry
Those surfaces are originally ground, at I believe, a 3deg angle
to facilitate rotation. I have a fully equipped racing engine shop,
but normally send them out to a shop already set up to do them.
Cheaper than doing them ourselves.
Archie
----- Original Message -----
From: Randy L. Thwing
To: engines-list@matronics.com
Sent: Monday, June 09, 2008 1:30 PM
Subject: Engines-List: Cont. C-145 lifter body, end geometry
Hello all:
We're overhauling a C-145 Cont. in our EAA affiliated Flying Club
airplane.
Our Lifter bodies (cam followers?) are in near perfect shape
including the faces which engage the cam.
We want to just lightly touch the lifter faces for renewal.
Could someone please advise what coarseness (grit?) of stone or
wheel would be appropriate for this?
We have run a dial indicator over the face and it is not flat. The
center of the face is 3 to 5 thousandths higher than the edge.
This appears to be a straight, rather than radius (concave?) cut
across the lifter face. Do we have that right?
Can anyone advise what are the Continental specifications for
renewing the lifter face? Angles etc.
We have a lot of machine shop capability. Any help is greatly
appreciated.
Regards,
Randy, Las Vegas
Chapter 163 flying club.
href="http://www.matronics.com/Navigator?Engines-List">http://www.matro
nics.com/Navigator?Engines-Listhref="http://forums.matronics.com">http:
//forums.matronics.comhref="http://www.matronics.com/contribution">http
://www.matronics.com/c
http://www.matronics.com/Navigator?Engines-Listhttp://forums.matronics.co
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