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If you have the thumbscrew but no tension plate, make a tension plate as follows: Bend a piece of galvanized metal [rob a 2" piece from a heater duct] so that it fits around the canopy rail. Drill a hole in it. Bend it loosely double. Push it on the canopy rail where the thumbscrew goes through [with the thumbscrew removed]. The thumbscrew goes through the hole in your piece, threads into the blind bolt, through the canopy rail, and screws against the other side of your piece. When tightened, the thumscrew pushes your piece against the plexiglas, hopefully holding it in place. For your 337: the tension plate should weigh about 1/2 oz. If you're anal enough to use stainless steel, add 6 oz. The hole is merely to permit the thumbscrew to retain the plate and keep it from falling off each time you loosen it. If this doesn 't work, try cementing a piece of sandpaper to the side of your plate that contacts the plexiglas. If that doesn't work, fly your bird with the canopy open; that's what Ercoupe's are for, anyway. It was good enough for Alcock and Brown..... Dr. R. Beeman ----- Original Message ----- From: "eagleavn" <[EMAIL PROTECTED]> To: "Skyport Services" <[EMAIL PROTECTED]>; <[email protected]> Sent: Tuesday, April 26, 2005 8:20 PM Subject: RE: [COUPERS-FLYIN] Canopy closed > ----[Please read http://ercoupers.com/disclaimer.htm before following any > advice in this forum.]---- > > > Thanks to everyone for the assistance. > LP > > -----Original Message----- > From: Skyport Services [mailto:[EMAIL PROTECTED] > Sent: Tuesday, April 26, 2005 5:36 PM > To: [email protected] > Subject: Re: [COUPERS-FLYIN] Canopy closed > > > ----[Please read http://ercoupers.com/disclaimer.htm before following any > advice in this forum.]---- > > > At 06:27 PM 4/26/2005, you wrote: >>They can be replaced by placing a blind nut in the same position as the >>original, and then making a screw that will work. > > Skyport has the thumb screw and the nut. We do not have the tension > plate, > nor does Univair. I have been unsuccessful to date to even locate a used > one to make a pattern from. (Anyone got one?) We do have a sketch > showing > how it fits into the picture, though. Without the tension plate the screw > will make short work of the window. > > > John Cooper > Skyport Services > PO Box 249 > 4996 Delaware Tnpk > Rensselaerville, NY 12147 > 518 797-3064 > > ========================================================================== == > == > 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/ > > > > ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers/
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