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Thank you, I knew I would get an answer here. I will go with 1.5 times the diameter. Are witness holes required or are they just nice to have? Nothing in AC43.13.

Is there guidance regarding the use of rod end bearings? Specifically how many threads deep should the rod end bearing be screwed into a pushrod? Is the a minimum spec or maximum spec? I am in the middle of rigging control surface deflections and was just wondering. Thanks in advance.

The venerable Memphis Bell B17 languished at the end of a Memphis runway for almost thirty years before finally being placed under cover. Still had zinc chromate finish though worn in places.

Here are a couple of pics of the canopy in place.

OPTIX 36 in. x 72 in. x .093 in. Acrylic Sheet from Home Depot @ $70.00 per sheet. As far as a liner, I just waxed the tool (carnuba wax) where the acrylic was going to touch and used high temperature PTFE inch and a half tape (Amazon) to seal the acrylic into the mold. The tape had to be...

It was hot as hell today. Good day to form a canopy. This is the first article (lousy pix) bit it turned out ok without too much markup. I will perform a thorough cleaning of the tool and pull another one Monday. This is the transparency in its frame. Have a great weekend folks.

Bberson, I added the ports at the bottom to do exactly what you describe. The original tool did not have those which is why I surmised that the canopy might have been free blown into the tool. Also just received my high temp sealing tape good for 500f. Mcrae, thanks for that article. In...

I am nearing completion of construction for my Prue Super Standard sailplane. Finally obtained some plexiglass for experimentation and have run into some issues that I believe can be solved via the information I receive on this forum. Along with the original project, a canopy tool was...