« Last post by SmallCar on July 25, 2025, 09:17:27 AM »
I was going to fill out the FAA paperwork to obtain an "N Number" for my Double Eagle but I stumbled over the spot that wants me to list the engine number. I don't have an engine yet. Do I have to have an engine number to obtain the registration number?
« Last post by Brock on July 24, 2025, 07:18:50 PM »
With the tailwheel now all but done it's time to move onto the control tube. So off with the seat to make access. Change the blade on my bandsaw (I have two identical bands, but cutting 4130 takes off the sides of the teeth, thus I save the nice one for aluminum and the kinda dull one for steel, seems it's the heat that does the cutting). Next I cut two 3/4" X 3/4"x 1/8" squares, drilled a 1/4" hole in each then took them to the sander/grinder. Cleaned everything with a SS brush and acetone. Fixed the two tabs with a threaded rod and clamped them in place on station 2 & 3. All ready for welding when I return to the shop.
« Last post by JerryD on July 24, 2025, 08:38:14 AM »
Hopefully this will help someone out. I just became aware of a company called EMJ Metals. They are competitive in pricing with Wicks and Aircraft Spruce in their 4130 tubing. They have locations world wide and all over the US. May save on shipping cost if you can find a location close to you.
« Last post by Brock on July 23, 2025, 07:46:25 PM »
Yesterday I managed to trim the tubing and bleed the brakes. They pumped up nice and firm. I think these toe brakes are going to work out well.
Today I finished the basics of the tailwheel. There still is a lot of weight to shave off the tailwheel but I have the basics installed. I decided to go with the plans spring steel setup as I'm thinking I will need the weight back there. And there is no lighter way to add ballast then in the tail wheel. The horizontal is not currently mounted but I notice that it takes a bit of weight to keep the tailwheel on the ground. Have others noticed if their finished bird wants to do a face plant with the wings removed?
I like that it is direct drive and has that big-bore loap sound.
Yeah, it sounds good. Does that translate to vibrates a lot? I know a guy that put a Harley engine on a small homebuilt but never flew it. He was afraid it was going to vibrate the airplane apart.
Sure it would work. Is it "better" than the Verner? Maybe..I've certainly had issues with the Verner, but I might have issues with the Spirit, too. Dunno. (shrug)
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Does that translate to vibrates a lot? I know a guy that put a Harley engine on a small homebuilt but never flew it. He was afraid it was going to vibrate the airplane apart. 