Today's Message Index:
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1. 04:38 AM - VGs on vertical stabilizer (mburdge39)
2. 04:52 AM - Re: VGs on vertical stabilizer (Michael Welch)
3. 05:29 AM - Re: VGs on vertical stabilizer (mburdge39)
4. 07:49 AM - Re: VGs on vertical stabilizer (Richard Pike)
5. 08:26 AM - Mark II (crashed) for sale?? (FIRESTARII)
6. 08:58 AM - Re: VGs on vertical stabilizer (b young)
7. 10:32 AM - Re: VGs on vertical stabilizer (Pat Ladd)
8. 11:57 AM - Re: VGs on vertical stabilizer (mburdge39)
9. 02:28 PM - Re: VGs on vertical stabilizer (Beauford)
10. 04:42 PM - Re: VGs on vertical stabilizer (Jack B. Hart)
Message 1
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| Subject: | VGs on vertical stabilizer |
Hi all! I am hoping someone can help me with my placement of VGs on my vertical
stabilizer. The directions on my Airwave vortex generators state "5 degrees from
level flight". Would someone be able to give me the angle, in relation to
the rudder, as my Firefly sits on the ground? Installing on the wing & horizontal
stabilizer went smoothly and don't want to screw this up.
Thanks!
--------
Mike
Firefly
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=368947#368947
Attachments:
http://forums.matronics.com//files/vertical_stab_195_798.jpg
Message 2
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| Subject: | Re: VGs on vertical stabilizer |
Mike,
Wouldn't "level" flight be referenced from your horizontal stabilizer. Raise
you hor. stab. up to level position,
and that is "level flight". No?
Mike Welch
On Mar 20, 2012, at 6:38 AM, mburdge39 wrote:
>
> Hi all! I am hoping someone can help me with my placement of VGs on my vertical
stabilizer. The directions on my Airwave vortex generators state "5 degrees
from level flight". Would someone be able to give me the angle, in relation to
the rudder, as my Firefly sits on the ground? Installing on the wing & horizontal
stabilizer went smoothly and don't want to screw this up.
> Thanks!
>
> --------
> Mike
> Firefly
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=368947#368947
>
>
>
>
> Attachments:
>
> http://forums.matronics.com//files/vertical_stab_195_798.jpg
>
>
>
>
>
>
>
>
Message 3
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| Subject: | Re: VGs on vertical stabilizer |
I guess I have over-complicated things here. With the boom tube angled up during
level flight it appeared to me that the horizontal stabilizer was also at an
angle.
Thanks!
--------
Mike
Firefly
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=368952#368952
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| Subject: | Re: VGs on vertical stabilizer |
I suspect that gap sealing the vertical stab to the rudder would also help. But
you've probably already done that.
--------
Richard Pike
Kolb MKIII N420P (420ldPoops)
richard (at) bcchapel(dot)org
Kingsport, TN 3TN0
Now faith is the substance of things hoped for, the evidence of things not seen.
Hebrews 11:1
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=368964#368964
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| Subject: | Mark II (crashed) for sale?? |
Hey everybody! My post is regarding an older MKII that was put down in a bean
field and is now for sale. She is pretty rough but has potential if you take
ten steps back and squint your eyes [Laughing] The boom tube is bent just aft
of the cage, the left main gear was whipped out and there are some very slightly
bent tubes where the boom attaches to the cage. Other than that the wings
and tail are undamaged. The engine is an older 503 SCSI with the points style
ignition and a 2 blade Tenn wood prop.
Needless to say the airplane is in tough shape and has been sitting in a barn in
Ohio. My question is what every body thinks the airplane is worth, how many
dollars it would take to get her airworthy again and if its even worth the effort?
The project may not be for me but if any one else is interested its posted
on the Akron, Ohio Craig's list for only 3K.
It would obviously need re-powered, re-covered and gone over with a fine tooth
comb. It is however N-Number and has AWC. Just some thing to talk about over
coffee this weekend! Fly often and fly safe :D
--------
Low and Slow FireStar II
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=368970#368970
Message 6
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| Subject: | Re: VGs on vertical stabilizer |
Hi all! I am hoping someone can help me with my placement of VGs on my vertical
stabilizer.
Mike
Firefly
First of all,,, do you lack rudder authority? if no,, why vg's there? which
side of the rudder or both sides? in straight and level flight, do you need
to hold right or left rudder to center the ball? maybe you only need one
side. for W&B it says to have your wing at some angle of attack,,,, with
the wing at that angle, is the horizontal stabilizer level? if so you could
measure from there. OR you could go for a flight and take a level and some
shims with you, while in level flight place the level on the floor along
the center line of the plane. and see what size of shim is needed to show level,
then calculate from there. OR, an electronic level on the floor, then
push the hold lock button and read the angle. duplicate that on the ground,
then measure. OR better yet, tuft the tail and have someone take a picture
with you in the air. that way you would be 5 deg from the air flow, not
withstanding where level is. the wind from the prop may cause some swirling
of the air past the vertical stabilizer, which would be different if the engine
quit, or at an idle on approach.
as for me, I don't lack for rudder authority. I have considered vg's,,,, on
the wing and bottom of the horizontals... but never the vertical. the empennage
on the kolbs have a long moment arm and accelerated air from the prop,
it should not run out of authority.
food for thought
boyd young
mkiii
Message 7
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| Subject: | Re: VGs on vertical stabilizer |
placement of VGs on my vertical stabilizer>>
You need extra lift on your VERTICAL stab.?
You fly on your side a lot do you?
Pat
Message 8
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| Subject: | Re: VGs on vertical stabilizer |
Haha! I really just didn't want to waste half a box of VGs! I will just keep them
with my other "extras". I will stick with just the horizontal stabilizer &
wing.
--------
Mike
Firefly
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=368996#368996
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| Subject: | VGs on vertical stabilizer |
Brother Mike:
I put 'em on both sides of my Fly's vertical stab... For two reasons:
1. Had extra VG's and they were paid for.
2. They looked cool and drew lots of questions from gullible onlookers.
They have been on there for about five years... Probably have some slight
effect on rudder authority, but likely not as much as Brother Pike's
suggestion
to seal the gap would have.
Not to put too fine a point on it, but suspect the agony over the VG
mounting angle may
not have a high payoff fer ye... Kinda like using a micrometer on a
buttermilk biscuit...
Worth what ye paid fer it...
Do Not Archive
beauford
FF-076
Brandon, FL
-----Original Message-----
Hi all! I am hoping someone can help me with my placement of VGs on my
vertical stabilizer. The directions on my Airwave vortex generators state "5
degrees from level flight". Would someone be able to give me the angle, in
relation to the rudder, as my Firefly sits on the ground? Installing on the
wing & horizontal stabilizer went smoothly and don't want to screw this up.
Thanks!
--------
Mike
Firefly
Message 10
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| Subject: | Re: VGs on vertical stabilizer |
At 09:55 AM 3/20/12 -0600, you wrote:
>
>Hi all! I am hoping someone can help me with my placement of VGs on my vertical
stabilizer.
>Mike
>Firefly
>
>
>First of all,,, do you lack rudder authority? if no,, why vg's there?
Additional rudder authority lets one hold greater forward and side slips. This
can be helpful in spilling altitude and enables landing in higher cross winds.
Jack B. Hart FF004
Winchester, IN
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