Originally Posted by Rollerboy
I too am replacing my Rockgaurd with lexan ,and also need some name ,or a picture of the things that are capable of holding my rock guard in place as we travel he bumpy roads of northern Michigan.....ANY help at all ? Pictures maybe?
Hi Rollerboy; My 1973 26' Argosy was in the need of window guards. I have looked at different ideas and I did not liked the way they fitted.
Had a bright idea of forming them on my own. Purchased sheets of Polycarbonate with hardened surface in 3/16". Using pre cut to 1" squares Clegicell rigid Urethane foam which is glued on one side to fiberglass cloth, I have cut it to form the window size and tapped it
tight to each of the two curved windows. The bulge in the glass was matched. Then I have applied resin to the external side of the foam while being taped to the window. After the resin set up the form was removed carefully and the glass side was covered with Kevlar cloth and coated with Vinyl ester resin. Those were to be used as molds to form a Polycarbonate guards. Polycarbonate requires pre-heating for two hours to dry up so that bubbles do not form within the Polly. Then it takes 425 Degrees of heat to form them. By the time I was ready to form them I found out my friend sold his oven. Ditching the idea, I took the alternative. Added another coat to both sides, finish sanded the molds and painted them to match my Arg color.
I have installed a 3/32" X 4" SS tabs into routered slots in the edges of the Clegicell molds using resin to bond them into the provided slots. The ends were rounded off and 1/4" mounting holes were pre drilled prior to installation into the molds. Using a 3/8" wide 1/16 " thick SS strip cut to 1' in length I have drilled a 3/16 hole in the center and countersunk it to accept a #10 SS machine screw. On each side of it 1/8" holes were drilled for 1/8 closed end SS rivet. The mounting fixtures were riveted between the frame mounting rivets in order to stay clear of the glass. Using a SS knurled round nuts 1/2" OD made a nice set of fasteners. when I hit the campground it takes two minuted to remove them. I have duplicated a sample sheet, it stops a 22 cal bullet. Cost, $72.00, labor 6.5 hours. Thanks, "Boatdoc"