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Topics - marc22181

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Hangar Flying / Lowering Stall Speed

« on: January 01, 2008, 11:14:35 AM »

I'm looking for ways to reduce approach speed and runway requirements. Has anybody had success with lowering the stall speed of a longez? Micro vortex generators claim a 9 knot reduction, but if that's real, I'd think lots more folks would have them installed. It would be interesting to hear if there are any ideas or better yet history with devices or airframe changes to improve low end performance.

Marc
770EZ

Hangar Flying / removing the bolt through NG6

« on: December 08, 2007, 07:03:16 PM »

I tried changing the brass NG6 bushings, but can't get past removing the bolt. The head turns, the nut comes off, but the bolt doesn't slide out. Even hammering it doesn't work. I don't want to break anything, but did give it several dozen whacks. Any advice would be greatly appreciated.
Marc
LE N770EZ

Hangar Flying / I'm looking for the drawing(s) of the longez tie down points

« on: October 04, 2007, 07:40:43 AM »

I'm looking for the drawing(s) of the longez tie down points referenced in the plans change section (CP-24) around page 5 or 6. I have the text from the cozy web site, but would really like to see the drawings attached to it.
Thank you,
Marc
LE 770EZ

Hangar Flying / wing tie down hardpoints -need help

« on: September 24, 2007, 08:45:27 PM »

I found the text of CP-24 that describes tie down hardpoints and also found a similar description on the cozy website. The CP dimensions of "13" inboard along the leading edge, and 9.5" aft of the leading edge." Seem to put the hardpoint on the shear web. From the Cozy site, "Measure forward of the trailing edge and perpendicular to it 12-3/4" does seem to put the hardpoints aft of the shear web. Which is correct and where exactly are the measuments from? The leading edge from inside the winglets or outside? I thought the LE and Cozy had the same wing. Are dimensions perpendicular to the Leading edge or Trailing Edge? A drawing or better description would be very helpful.

Thank you,
Marc

Hangar Flying / Vortex generator installation

« on: September 02, 2007, 02:37:33 PM »

I'm about to install vortex generators on my long ez. The installation instructions that came from CCI were somewhat vague. The canard is almost 12 feet long, but 100 vortex generators spaced 1" apart is only about 8 feet. Are they supposed to be centered on each side? Should they favor the outboard ends? Also, the thickest part of the airfoil appears to be about 2" forward of the 50% chord line. This may be my imagination, but it does seem forward if the elevators and canard are both used to measure chord. Does anyone have a measurement from either the trailing edge of the elevators or the canard elevator cutout line.
Thanks very much for the help.
Marc