Engines-List Digest Archive

Wed 06/11/08


Total Messages Posted: 2



Today's Message Index:
----------------------
 
     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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    Time: 08:15:16 AM PST US
    Subject: Cont. C-145 lifter body, end geometry
    From: "Monty Barrett Sr" <MONTY@bpaengines.com>
    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 href="http://www.matronics.com/contribution">http://www.matronics.com/c


    Message 2


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    Time: 08:58:55 AM PST US
    From: "Randy L. Thwing" <n4546v@mindspring.com>
    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 mhttp://www.matronics.com/contribution ------------------------------------------------------------------------- ----- Checked by AVG. 8:01 AM




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