Bob, I covered the holes in my wing ends in fabric when the wings were recovered a couple of years back. A lot of dirt and water gets into the wing end there from throwback from the main wheels which leaks around the bottom wing strips. Sealing the ends stopped that problem. Of course, plenty still gets in and sits in the lip of the outboard center section but rib...which is why every annual I thoroughly clean this area and liberally apply Corrosion X all along the lip. As to venting, there is plenty of ventilation from the leakage around the rest of the inspection covers on the bottom side of the wings. A significant reduction in air being sucked into the fuselage and coming in under and around the seat and cooling your backside in the winter is had by using inspection covers to seal off the holes in the butt rib of the center section. They fit perfectly and you do not need to remove the wing to fit them...just remove the bottom wing strip, reach up, and snap the covers into place. The difference is very noticeable...
John Olav Johnsen Ercoupe 415-E N94783 s/n 4894 Albuquerque, New Mexico -----Original Message----- From: Bob Saville <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Monday, December 13, 1999 9:28 AM Subject: Swiss Cheeze >Hi Group, > I just posted a reply about the swiss cheeze AD and "to cut or not to >cut" the holes out now while they are being covered. > Now I have another question for the group. You know the holes in the >root end of the wing where it fastens on to the center section? (They >are the same size as the inspection holes that are under the wing.) >Here's the question...I've talked to a several people who say if you put >inspection covers over those holes it cuts down on some of the noise in >the cockpit as well as reduces the entry of dirt, dust, moisture and >possibly even mice from getting into the wings. > I'd like to know what the rest of you think about this and also if I >should just not cut those out at at all and leave them covered with >fabric when the wings get covered. They could always be cut out at a >later date if necessary for some reason. > There are no cables, electric wires or anything that pass through there >so other the possibility of needing to see inside some time in the >future when the wings are off, what purpose do these holes serve, if >any? > Should I leave them covered with fabric, cut them out and leave them >open, or cut them out and install inspection covers over the holes? I >see no reason for them to be left open other than ventilation, and I'm >not sure if that is necessary. As far as needing them to allow a >pressure relief in case of temperature changes, wouldn't the 'weep >holes' in the trialing edge be sufficient for that? > What do all of you 'experts' out there think, have any of you run >across this question before??????? > Gotta get off of here now and get started on my monthly newsletter, >I'll check later for responses to this. Thanks for your help. > >Bob Saville >N3396H 415C >Eugene, OR
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