Originally posted by whee
View Post
Announcement
Collapse
No announcement yet.
Keep Checking Tail Strut Threads
Collapse
X
-
Originally posted by Battson View Post
That will allow for more and slightly larger stress cycles, at full power especially. I suggest taking a turn off each side to put a little pre-load on the fittings.Scratch Built 4-place Bearhawk. Continental IO-360, 88" C203 McCauley prop.
Comment
-
Originally posted by alaskabearhawk View PostMy H stab struts have a bolt in each end, no adjustment. I thought the later addition of adjustment at the bottom of the strut was to make fabrication easier, not to make adjustments. No?
Comment
-
I really am missing something here. The plans (#708) are unambiguous. H stab straight using a laser level, weld the struts. The only adjustment possible before the strut is welded is where the forward H stab spar attaches to the fuselage. My plans say negative 4 degrees for a flat (non-airfoil) H stab setting. I put an airfoil shape in my H stab and it generates more down thrust. Per Bob’s recommendation I went to a negative 2 degrees. There is no other adjustment available to me.
Comment
-
Paul, we do it a little differently on the kit hor stab struts. On the bottom we weld in a AN490 and thread on an AN665-34. That way there is some adjustment. Not a ton, but enough to adjust the outboard side of the hor stabs.
You might find that 2 degrees down is not enough and you need 3 degrees to get good elevator authority. Time will tell when you fly. Mark
-
I just double-checked my build log. I did make the incidence a neg 3 degrees after having talked with Bob about it. Hopefully that will be good. I do have a couple of the rod ends you described, got them from Jared last year. So, in case any changes have to be made I have what I need.
homebuilt aircraft, builders log, experimental, experimental aircraft, 51% rule, fifty-one percent rule, 51% percent rule, aircraft homebuilt kit, aircraft homebuilt plan, aircraft composite homebuilt, aircraft experimental homebuilt, aircraft experimental kit
-
-
This string is an eye opener. I would rather build solid bolt on struts, fly them and if necessary build additional struts until it is dialed in. In the grand scheme of things, steel is cheap.
Comment
Comment