My newly purchased G-200 has the canopy piano hinges screwed solidly to the airframe and canopy frame. The piano hinges have continuous loops encircling the wire, which definitely will not break to release the canopy. I've seen other planes (RV4, G202) with what look like pop rivets attaching the hinges, which are supposed to tear away when the canopy is unlatched and lifted. The construction manual I received with the plane doesn't cover the canopy. Does anyone have information from Giles on the recommended attachment devices? (Or from Van's?) I'm considering two approaches: 1. Replace the screws with long pop rivets. Does anyone have specs for the appropriate rivets? I'd have to add washers to reduce the hole size, as pop rivets the same size as the -10 screws would be much too strong. - This worries me a bit, as I don't want the canopy coming off accidentally. I think I might retain one screw on each hinge and hold it in place with a cotter pin bent only enough to keep it in place. The two cotter pins would be connected with a cord so I could pull them out with a single motion. 2. Replace the continuous piano hinges with the type that is made from flanges bent to form the tubes for the wire. These might be weak enough to release the canopy. (Or maybe use a Dremel cut-off disc to make a lengthwise cut in the loops of the existing hinges.) I'm planning to rig up test piano hinges to measure the forces needed to detach them, for both potential solutions. Unfortunately I don't know what sort of forces might be produced by a canopy that's unlatched and raised. I'm guessing maybe 50 lbs at low speed. I assume the force would be applied primarily to the front of the forward hinge, so the canopy would come off in a peeling motion (rather than a lifting motion). I'd like to hear what others have done to address this issue. Allan C-FAMP