Mailing List flyrotary@lancaironline.net Message #32299
From: Bob Darrah <RDarrah@austin.rr.com>
Subject: Re: [FlyRotary] Re: Front, Rear and intermediate housings
Date: Thu, 15 Jun 2006 23:12:23 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Suggest you use a FINE grit, like 600 or so if you don't have too much to take off.  You want a good finish, then clean well.  (VERY well!)


Bob Darrah


----- Original Message ----- From: "jesse farr" <jesse@jessfarr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, June 15, 2006 9:23 PM
Subject: [FlyRotary] Re: Front, Rear and intermediate housings


Get you a glass table top, about 1/2 inch thick, (or a piece thereof, the one I have is about 1" thick) put it on flat table, put a little valve grinding compound on it and rub your end and center plates around on all that until the surfaces are polished smooth. You have just lapped them suckers. If a machine shop surfaces them you probably do not have any nitrided surface left. IMHO.
jofarr, soddy tn

----- Original Message ----- From: "James Brewer" <alpha@concordnc.com>

I would like to know if there is a do-it-yourself way to lap the housings

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