Test flying my STOL CH 701 with Zenith VG's on elevator (bottom only)

Feb. 2009: Testing the Zenith VG's at Jones Landing in Big Lake, Alaska. Note: All test flying with NO FLAPS - Caution: Some extreme attitudes. VG's mounted on bottom of elevator, first tested 120 mm. forward of elevator spar.

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Location: Big Lake, Alaska


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Comment by Bob Jones on October 13, 2022 at 12:39pm

No, the flaperons do not block  the elevator, that is why Chris raised the tail , I very seldom use them ,as they extend the take off run on water if deployed early ,I jerk in them if heavy after on step ,if you need to lose altitude just pull the throttle to idle , my plane will drop about 900 feet per minute at idle ,

Comment by Paul GIANOTTI on October 13, 2022 at 2:05am

Hello Bob !

Nice slow and low flight !

With slats retracted that’s right ?

Does it mean that when slats  are extended, they « hide » elevator ?

Comment by Bob Jones on July 31, 2009 at 1:59pm
Robert, As per Zenith's Instructions, it SHOULD be 120mm to the LEADING EDGE.....FOLLOW THEIR INSTRUCTIONS!!!!!!
Comment by Robert R. Kissell on July 30, 2009 at 6:55am
Great demo Bob,
I have ordered a set from Zenith. You cite 120 cm, is that really 120 mm from the spar and is it with respect to the leading edge of the VG or the railing edge? Thanks..Bob Kissell N701UB
Comment by Bob Jones on June 4, 2009 at 3:50pm
meant to say rest your arm!!!!!!Bob
Comment by Mike Ethridge on June 1, 2009 at 11:08pm
Bob what was the final placement of your VG's? After watching your great video it's an easy choice to decide to install VG's. Thanks for sharing with all of us. Mike
Comment by Bob Jones on May 2, 2009 at 8:28pm
Phillip Owens, just give me a cal @ 907 355 5698 for more info. Bob
Comment by Phillip Owens on May 2, 2009 at 2:13pm
Very interesting display, I would like to know more about your ski's and how they are atached. We have some really good ski flying weather here in Wisconsin.
Comment by Bob Jones on April 1, 2009 at 2:25pm
Kostas, My approach speed apx. 45mph. No stick vibration at any speed even before VG's and I never use the flaperons. Obviously you have some other problem causing vibration. Bob
Comment by Kostas Rossidis on April 1, 2009 at 3:53am
Bob Greetings from Greece...well done.What was your approach speed 45-50mph?. I was always getting some stickairflow vibration below 55mph,that is corrected by lowering Flaperons.Do you get that with vgs installed?

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