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!10-4 Ken ----- Original Message ----- From: "McClure, Rich" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[email protected]> Sent: Monday, February 28, 2005 7:37 AM Subject: RE: [COUPERS-FLYIN] bumps on cowling > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > > > > Glen, > This has to do with the use of a shorter spark plug on top of the cylinders. > The newer, typical plug and ignition harness wire attaches directly out of > the top of a longer spark plug (this can be used on the bottom plugs). But > if this is used on the top spark plugs, then the bumps are required to > provide clearance with the wire and the cowling. But with the use of shorter > plugs and a Ercoupe cup, the newer type screw-on harness wires are installed > at more of a right angle to the plug. This gives the needed clearance > without the cowling bumps. I've attached a couple of pictures showing the > original cup parts and the newer Ercoupe-cup parts that I used on my plane. > The only negative to the cups is that they have to be machined to fit the > standard thread used on the ignition harness wire. They come with a larger > thread diameter. but this is easily done with a lathe and correct die. It > sure looks a lot cleaner without the cowling bumps. > Richard McClure (N94004) > > <<MVC-025S.JPG>> <<MVC-022S.JPG>> <<MVC-013S.JPG>> > > > ========================================================================== == == > To leave this forum go to: http://ercoupers.com/lists.htm > Search the archives on http://escribe.com/aviation/coupers/ > > > ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers/
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