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#31
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JJ Sinclair wrote:
so if you leave the glider for some time, you close the canopy and cover it. In the cockpit fire that I know about, the soft cotton canopy cover was placed over the instrument panels to keep them cool and the canopies were left open. Not a good idea to leave any combustable material on the instrument panel, not even your hat. Close the canopy and put the cover on is the best rule. JJ Sinclair Was it the cover that ignited? I use my cover, hat or towel, all white, and they all stay cool, even with the canopy focused on them. Not so for the black glare shield or instrument face. Some people hang the cover over the back end of the open canopy to block the sun's rays from hitting the cover in the first place. Works well as long as it isn't windy. -- Change "netto" to "net" to email me directly Eric Greenwell Washington State USA |
#32
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Was it the cover that ignited?
Yes, The open canopy struck a sharp focus on the instrument panel and ignited the cotton canopy cover. By the time anyone knew it was happening, both cockpits were on fire. The scene after the fire department was through was nothing short of appalling. There were parachutes, instruments, seat cushons, plexiglass, canopie rails, little sliding windows and stuff floating in cockpits that were half full of water. It was hard to look at, even for a veteran salvage bidder, like me. I figured the ASH-25 would be a steal at 20K, about right for 30K and too much at 40K. It went for 38K. BTW, the owner normally placed the canopy cover over the open canopies, but decided to cover the instrument panel because it had blown off the day before. Canopies closed and covered is the safest way to avoid this problem. JJ Sinclair |
#33
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JJ Sinclair wrote:
Was it the cover that ignited? Yes, The open canopy struck a sharp focus on the instrument panel and ignited the cotton canopy cover. By the time anyone knew it was happening, both cockpits were on fire. The scene after the fire department was through was nothing short of appalling. There were parachutes, instruments, seat cushons, plexiglass, canopie rails, little sliding windows and stuff floating in cockpits that were half full of water. It was hard to look at, even for a veteran salvage bidder, like me. I figured the ASH-25 would be a steal at 20K, about right for 30K and too much at 40K. It went for 38K. BTW, the owner normally placed the canopy cover over the open canopies, but decided to cover the instrument panel because it had blown off the day before. Canopies closed and covered is the safest way to avoid this problem. JJ Sinclair I guess I'll stop "protecting" the panel with the canopy cover! Covering the canopy isn't neccessary, since there isn't any focusing through the canopy, but it will keep the cockpit cooler. I usually prefer to prop open the back of the canopy with a 2" foam block to allow air circulation, but almost any prop will do. This is on forward-hinged canopies that have quite a bit of closing force when almost closed, not side-hinged canopies. I prefer it because my canopy often isn't dust-free, so I'm concerned the cover will scratch the canopy or the the dust will get into the cover; also, lots of times the cover is back at the trailer. -- Change "netto" to "net" to email me directly Eric Greenwell Washington State USA |
#34
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Well,
Friday, at the end of the flight around % 0'clock on a sunny Central Texas day I put my canopy on the ground and my Garmin GPS down beside it for not more tha 15 minutes. Now I've got black spot the size of a dime ont he screen. Don't know what it's gonna cot to get fixed. Be careful out there! Cheers!, Pete (sun power believer now!) "BllFs6" wrote in message ... The focal ratio of my canopy is about 1 when it is reflecting light onto my glare shield okay, thats a number I can play with... whats the focal length or effective diameter? take care Blll |
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