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victorbravo(at)sbcglobal.
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 Posted: Fri Mar 31, 2017 2:05 pm Post subject: vg's and related landing gear |
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John H it's great to hear a positive review of the VG's from a very highly experienced Kolb pilot. It validates all the "theory" and all of the "it should work" about VG's. Your comments and experiences will give me even more reason to try the VG's with confidence.
Speaking of three point landings and hitting the tail... I have finally got my Kolb Slingshot gear legs slid into the gear socket tubes, and I'm waiting to verify wheel alignment and drill the bolt holes this Saturday hopefully. The fuselage is up on sawhorses, tail on the ground, to get this all mocked up and visualized before mounting the legs.
With the long Slingshot legs, and the Desser 21 inch tires I plan to use, the angle of attack in three point attitude looks like it will be about 15 degrees or even a little more. Even higher ground angle than the Slingshot, because the Firestar has the wings mounted at a much higher angle (Angle of Incidence for you trained aero-scientists). It's a big increase over the stock Kolb ground attitude.
John H was correct in a comment he made about this many months previously... I'm actually going to have to carry some sort of ladder or stool to climb into the cockpit ! I'm looking into a short "rope ladder" that is tied to the steel frame and stows under the seat, I should be able to make something that weighs under a pound.
The VG's should help the Firestar fly at this high angle on takeoff and landing, which will allow me to shorten the takeoff and landing roll despite my aircraft and pilot weight which is heavier than average.
Bill Berle
www.ezflaphandle.com - safety & performance upgrade for light aircraft
www.grantstar.net - winning proposals for non-profit and for-profit entities
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On Fri, 3/31/17, John Hauck <jhauck(at)elmore.rr.com> wrote:
Subject: RE: vg's
To: kolb-list(at)matronics.com
Date: Friday, March 31, 2017, 2:26 PM
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#yiv2429368301 Larry C/Kolbers: Thanks for the
comment. For the moment, my tail is not
stalling.  However, I do have enough VGs to
do the tail, plus I am thinking about doing the same thing
to both entrance doors and maybe a few on the windshield.
Just aft of the doors is dead air which can be seen when
flying in the rain. Lots of dead air. Also, the area
where the rear of the windshield meets the bottom of the
center section. Have to figure out how to configure the
VGs on the windshield to get that air to split and move
around the dead space. Right now I am packing my gear to
head to Lakeland. Plan on departing Gantt International
Airport Tuesday morning, 4 April. Monday, my original
departure date, is forecasting thunderstorms all day, plus
the wind is to be strong out of the SE. Tuesday it turns
around out of the W with lots of sunshine. Probably need to check calibration
of my tachometer. Haven't done that in a while. They
are easy to adjust with a tiny screw driver and an RC prop
tach. I think the one I have had for years is a Busy
Bee. Got it out of an RC catalog. This morning I was
turning 5600 rpm WOT. 5400 would be better. Still gives
me good climb and a little better cruise. However, 5600 at
sea level is propped just right for flying out West. Since
I plan to head West in September, I think I'll leave it
along. Going back to horizontal
stabilizer VGs for a moment, configured the way I am now,
the tail wheel touches down (notice I didn't say hits)
long before the mains, and Miss P'fer sits at a nice
nose high stance. I could make the tail wheel hit even
sooner and the nose higher, but don't know that I need
to be doing that. However, the VGs on the wings may help
soften/reduce the impact on the mains with a high nose, tail
wheel first landing. Something to play around
with. john hmkIIITitus, Alabama From:
owner-kolb-list-server(at)matronics.com
[mailto:owner-kolb-list-server(at)matronics.com] On Behalf
Of Larry Cottrell
Sent: Friday,
March 31, 2017 3:56 PM
To:
kolb-list(at)matronics.com
Subject:
vg's I have to admit that I am
quite proud of you. Whether you believe it or not, the ones
on the elevator do help t keep the tail flying and will also
improve the landings. As I mentioned earlier, without them
the tail feathers stall before the wing. Larry
--
The older I
get, the less tolerant I am of those who are intolerant of
others. If you forward this email,
or any part of it, please remove my email address before
sending.
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Fri Mar 31, 2017 2:34 pm Post subject: vg's and related landing gear |
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To get into the aircraft, face away from the entrance door, step on the main gear tire, scoot your ass over the longeron and into the seat. Don't really need a ladder.
john h
mkIII
Titus, Alabama
--
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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