1
« Last post by Brock on September 07, 2026, 08:30:56 PM »
It feels like real progress that now the wings are held on by struts of their final dimentions etc. The Aluminum tubes all came out nice at 78-1/2". Incedence on the left wing turned out to be 0.4 degrees more than the right wing. Probably close enough but it challenged my thinking a bit. Since the left wing has .4 deg more incidence what about the washout. Should I make it 2 degrees from the root of each respective wing? But that would put the left wing-tip with .4 degrees more angle of attack than the right tip. I'll tell you what I did later if anyone is interested. I'm hope'n it's not troublesome to trim out with the ailerons.
Also of note. The dihedral came out at 1 and 1.4 degrees not 2 degrees as planned. Hope it's not noticeable. I'll be flying 1 degree tail low. Also pictured is my make-shift wing support and the micro adjuster to get the height just right.
The metal ends of the struts took some thinking. I made a few errors and had to start over. I calculated I had enough metal for one more mistake/restart. It didn't happen, and I have about 6" extra metal tubing left over. Still to do is to weld-in 3/8" OD x 1/4" ID bushings in each tube, then finish the tack-welded rear tube angle slots.
2
« Last post by Dan_ on September 07, 2026, 02:24:28 PM »
Ok friends.
I installed a modification to the forum that should help the differences with the search box in the upper right corner and the search button in the main menu.
The problem before is the difference between the scope of the search. The search in the upper right only searched the immediate context. For example if you were looking in the "Off Topics and General Interest" board and typed something into the box in the upper right and hit search. That search would only happen in the general interest location... Not the entire Eaglers site. You can control the scope for that box now.
There is an "Advanced Search" you can get to in either place now. Said search is the ultimate in parameter control.
I hope this helps with the search results.
-Dan
3
« Last post by Dan_ on August 31, 2026, 11:19:03 AM »
Both the single and 2 seat Air Bikes had them.
4
« Last post by pappyadkins on August 31, 2026, 05:17:54 AM »
Great job... BTW, on your 3D print... Love it, but have food for thought, what about your control cables up the rear strut? Interested to see what you come up with... I've thought about similar idea... think I finally decided to go with an ultra light concept of 3d print myself, we'll see if what I came up with works... lol
5
« Last post by Mark Kramer on August 30, 2026, 03:30:19 PM »
First thing I did was to lower front of stab 1/4 inch. Did nothing to ease aft stick pressure. Also I have 3 or so pounds lead in tail. Just added trim tab to right elevator and pretty much has corrected the problem. Now I’m learning a tab on one side is not a good idea as you get dissimilar loads at the elevator connection fitting. My next move is to add a left side tab,bend them both to match each other with the correct trim. Also plan to replace the 3/16 Clevis pins in the center control arm fitting to 1/4 inch as over six seasons of flying they have gotten a bit loose.
6
« Last post by rv7charlie on August 30, 2026, 03:10:29 PM »
No doubt you're correct about sequence. But a 2" average chord variation based purely on 'builder intuition' is not insignificant... Or maybe it is; there are certainly a lot of them flying successfully.
7
« Last post by KWK on August 30, 2026, 02:59:45 PM »
Thanks for looking. I didn't have any luck finding it either, but it does sound familiar. Nor can I find it in my notes on the DE. I did see mention of it on HomebuiltAirplanes but with no details.
8
« Last post by Dan_ on August 30, 2026, 02:51:19 PM »
There is a first time for everything I guess... I have so far struck out on finding that post...
9
I can't imagine why not..or you can lower the front of the stab.
10
Good idea doing the front first. It sets the dihedral, the rear sets the washout.
|
Recent Posts