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1. 12:35 PM - Re: Forward tilting windshield (Richard Pike)
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| Subject: | Re: Forward tilting windshield |
Here's how we did the FF. Get some poster board and make up a windshield template.
Use this to figure your size and get an idea of where you want it to pivot.
Get some 1/8" aircraft plywood and make a couple of discs per side, these will
reinforce the Lexan at the pivot point. Bolt them together and sandwich the Lexan
by countersinking a few model airplane blind nuts to the nose bowl side of
the inner one and bolt them together with some model screws. Get another piece
of 1/8" plywood and epoxy it to the lower front nose bowl as a bearing surface
that the inside windshield disc will pivot on. Blend it in to the nose bowl
with a little bondo. JB Weld a flat steel washer to the inside of the bowl to
keep the pivot bolt from ripping through.
The windshield is 1/16" Lexan. Once the windshield was cut to size, we used 1/4"x
1/4"x 1/16" aluminum angle from Home Depot as external braces, with a couple
rivnuts on each side for the locator pins & lock handle to screw into. It had
to be external because we couldn't figure out how to put it on the inside side
of the Lexan and still have it work.
Kolb welds several tabs to the inside of the front tubing cage, we used the rear
ones to anchor the windshield via pins that stuck through the holes in the tabs,
and a pivoting handle on each side to secure the windshield from popping
the pin out. Swing the handle up and you can flex the windshield and pop the pin
out, gravity hold the handle down and locks the windshield in place. Make scuff
plates for each side where the pins and handles live, or you'll poke the
locator pins through your fabric. Guess how I know this?
The windshield flexed a bit in flight, but we never got it going fast enough to
bend it out of shape or have any problems with it. Pivoting forward sure made
it a LOT easier to get in and out of the airplane.
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Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing.
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