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Hat-tip and credit to Dan Marchetti, the former owner and builder of my B STOL for this repair he designed to the Rib trailing end to which the flaperons attach. He did this mod to all 5 ribs on the left wing. I installed on on the outboard Right wing which I found cracked. I like to call it the Marchetti Flaperon Bracket Mod
Avid Flaperon Mod.zip
The tip spreader referred in the files above is a necessary add if all brackets (in the case of this wing) broken at once and is affixed to the end of the trailing spar and to the inside of the aft of the wing tip. Your situation may not require it.
avid_flaperon_mod_12-21-2020.pdf
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Post on Flaperon travel parameters in Avid Build manual
By Jim Bowerman, postedI find that my Avid Bandit seems to lack adequate roll control, particularly in a crosswind. I have been unable to pin down exactly how much travel from up to down with full stick deflection the flaperons should have. Does anyone have the actual degrees of travel and how to adjust them available?
Thanks in advance,
Jim Bowerman
viejopilot@gmail.com
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Asked this in the mk4 sub forum as well but didn’t get any responses so I’ll try here. Bought and Avid Champion which is basically a single seat Mk4. It has the same stol/heavy hauler wing as the mk just a little shorter and built with lighter spars. It came with two construction manuals, one for the champion which is pretty vaugue and really only has a few pages of variations about wing construction as opposed to the mk4 and a parts/component breakdown section, and a mk4 manual that I guess you just kind of wing it and use for the rest of the construction. The champion manual may not be complete. Anyhow, my question is this, I’m to the point of mounting the flaperons and rigging everything before tear down and final paint and reassembly and if I go by the mk4 manual it says to level the wings at the rib just inside the jury struts starting with right wing because it has the non adjustable lift strut then the left wing adjusting the heim joint until the left wing is level. At that point you clamp the flaperons in place and adjust the flaperon hinge mount to be at a 50 degree angle off the back of the rib tip. The problem is when I level the wing I expected the doorsill of the plane to be level in relation to the wing but it’s not. With the wings leveled the fuselage has a very nose down attitude and even the motor looks like it has a very pronounced downward thrust line. Is this normal on the avids or should I maybe level off the doorsill instead? When I do level the fuselage versus the wing it looks a lot more like the level flight “stance” I would think the plane would have in flight. Sorry for the long post. I know most guys don’t know much about the champion. I believe there were only about ten built and this one is number nine. Hope someone can help.
Thanks!
Damon
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Any feedback on appearance or function with regard to painting the flaperon brackets (the ones that are part of the flaperon and have the shaft pivot. They appear cad plated from what I can tell.
Are these usually left bright or painted?