Gary,
What is the flap chord length (center line of hinge to TE) at the root on a 235? It must be shorter than a 320/360 given the 0.75" TE travel.
My trailing edge moves 1.48" to go from 0 to -7 degrees.
An added complication is that the inboard edge of the flap is not perpendicular to the hinge. If you measure along the inboard edge, you'll get a slightly longer measurement.
Honestly, I prefer a direct angular measurement. It takes all the geometry issues out of the equation. I just checked the iPhone (Theodolite App) against my digital level. The iPhone is a bit harder to read but it followed the level exactly. The 'not free' version allows you to do screen
captures.
Chris Zavatson
N91CZ
360std
From: Gary Edwards <gary21sn@hotmail.com>
To: lml@lancaironline.net
Sent: Tuesday, October 1, 2013 4:30 AM
Subject: [LML] Re: Lancair 320/360 performance and stability
Don't know if this is any help.
The reflex position on the 235 airframe (same wing as the 320/360 wing) is up from the faired in with the fuselage position, which is 0 degrees. -9 degrees is 0.75" (3/4") up from the fuselage. So you could interpolate the distance to come up with the amount you are thinking of changing to.
Gary
LNC2