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Comment by Jay Parker on April 22, 2010 at 5:52am

Hmmmm...it didn't post the website I put in my message so here it is: http://www.stolspeed.com/

Comment by Jay Parker on April 22, 2010 at 5:50am

Hank, There is a very good study done by a fellow in Austraila who experimented with VGs on his Savannah, which is a close copy of the 701 but closer in size to the 750. I read his whole website and the results were very impressive. Check out his website for stats and videos and see if it answers some of your questions about using VGs. I think I am convinced now that I'll probably drop the slats when I build mine and just use the VGs.

JP

Comment by Hank Optland on April 22, 2010 at 3:52am

I wonder how much weight saving there is if the slats are not fitted to the CH-750?

Comment by Bob Simmons on February 23, 2010 at 9:49pm

There are only a few 750s flying, so I find it highly unlikely that anyone has replaced their slats with VGs yet. I have thought about it myself, but had no real concrete plans to do so. I'd like to have more cruise speed and I don't need extreme STOL, but so far I don't see the potential for enough gain in cruise speed to make the change worthwhile.

Comment by Hank Optland on February 22, 2010 at 11:38pm

Does anyone know of a CH-750 owner who has replaced their slats with VGs? Was it successful?

Comment by Jay Parker on February 4, 2010 at 8:10am

I found a pdf file the placement of vertical vortex generators up the rudder, but it doesn't explain it's use or characteristics. http://www.flyfbi.com/Black_Max_Air_Wave_VG_Manual.pdf They show the typical placement along the leading edge of the main wing and a different placement of VGs from Zenith's placement on the elevator. I wonder if micro VGs would aid in some way the landing characteristic of the CH-750 further if placed on the leading edge of the Junker Flaperons when flaps are used in landings? They say that placing VGs or "Dimple Tape" on a propeller can increase speed and gallons per hour statistics. http://www.lessgasmoremiles.com/ I saw one while browsing the internet of micro VGs that were itched into the plane's propeller, but I can't seem to relocate that article. But I still don't know what the affects of using VGs or Dimples along the rudder might have, unless it reduces drag.