Sonex Waiex B, Part 34, why SONEX supply TWO CANOPIES
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- Опубликовано: 9 апр 2024
- Trimming and fitting the canoy from a very happy start, to the most dissapointing finish of my build yet.
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I bet it was a great feeling to be sitting in the cockpit with the canopy closed. You did a really nice job fitting it and I’m sure you can do it again if the crack is not repairable.
I can't wait to see that thing get off the ground for the first time. Looks good so far! Gj!
Andy, please don't stress yet about that crack on the canopy. Try Weld-on acrylic cement (number 3 or 4). It works for acrylic and even polycarbonate. I would remove the screw where the crack started and apply very little weldon with a syringe applicator just to fill the crack. It is very fluid, should fill the crack easily, dry very fast, form very strong bound. You may try with scrap pieces first.
Hi Andy, You have done a really good job on the canopy - Well Done 😃. When I countersunk the holes for the dimpled washers I made sure the countersunk hole was a slightly loose fit on the washer just in case the washer tried to put pressure to open out the hole. Having said that it could have cracked for many reasons and it may just have been fate. It is difficult to gauge how much to tighten those screws especially as you are not supposed to use Loctite on them. I didn't put much pressure on them with a view to monitoring them over the first few hours of flight to see if they would loosen. I think you already know the answer as to whether to fix or start again. If it was me I would start again and keep the original one as a back up. I wouldn't try and use the original as a pattern - Start again from scratch - It won't take long - You know what your doing this time 😊 PS If it makes you feel any better I'm having a bad time with the bottom cowling at the moment. I'm in the process of giving up with plan A and starting again. Glass-fibre matting and resin at the ready to fix my cockup 😧
Sad to see but hang in there and try again. I've no real advice other than to maybe enlarge the holes even more. All of the countersinking "seats" things tight enough in the end. You'll get there soon enough with your determination.
Ouch. I only have one canopy, so hopefully you figure out what happened and can discuss it (so I can learn from it). It's only on international orders that Sonex forces you to buy two canopies - I guess because it's such a difficult part to ship on its own.
Andy, see what Sonex says. Hard to tell from the closeup but I have two observations:
Thats a bugger. The way we fix those cracks in glider canopies is stop drilling at the end of the cracks then wicking in thin CA glue. Let it dry overnight, sand it back lightly with various grades and polish. Not hard to do but damn annoying.