Today's Message Index:
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1. 04:47 AM - Re: Heavy wing (Gary Aman)
2. 04:58 AM - Re: Re: heavy left wing, how trim tabs work. (Gary Aman)
3. 01:26 PM - Re: heavy left wing, how trim tabs work. (esp3500)
Message 1
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Good to hear from you Boyd .Hope all is good out there! G.Aman
> O G.Amann Nov 8, 2020, at 2:36 PM, B Young <byoungplumbing@gmail.com>
wrote:
>
>
> I first flew my kolb mkiii in 2000. My right wing was heavy so i
started making adjustments.
>
> First thing, i had to hold 2 to 3 pounds of stick pressure to keep
the wings level, but we noticed that the ailerons were exactly even
with the flaps.
>
> First I modified my rear attach fittings. I welded a small bead in
the 1/2 inch hole, then filed the opposite side.. this effectively move
the whole maybe 1/16 of an inch. on the heavy wing I lowered the
trailing edge and on the light wing I raised a trailing edge. I did this
on both sides and I lowered the rear attached point of the heavy wing
and raise the rear attach on the right. This change the incidence from
one wing to the other and it would fly hands off. but I noticed that the
ailerons and flaps were out of alignment one being near an inch high and
the other aileron being a inch low compared to the flaps. This is
equivalent to kolbs adjustable fitting but not adjustable
>
> I then ordered another set of unmodified rear attach fittings from
colb and remounted back of the wings to stock. Then I installed a trim
tab.. my gray matter told me that when a wing stalls you disrupt the
air on the top side of the Wing,, so I chose to put the trim tab on
the bottom side of the aileron and bend it down that way flying at any
speed the trim tab would stay in effect..
> My trim tab is 1 aileron Bay wide and it extends beyond the trailing
edge inch and a half to 2 inches and it's bent down approximately 1/2 of
an inch.. there's another 1 1/2 to 2-inch where I riveted it to the
bottom of the aileron ribs and trailing edge.
>
> in my case where the right-wing was heavy I put a trim tab on the left
aileron on the bottom side pointing down. the trim tab causes the left
aileron to raise and the right aileron to lower and it corrected the
role and I was back to hands-off flying and this time the ailerons and
the flaps were still lined up perfectly.
>
> If you have questions please feel free to ask.
>
> Boyd Young
> Kolb mkiii utah
>
Message 2
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Subject: | Re: heavy left wing, how trim tabs work. |
Nice to see some activity on the list. are you flying anything now Rick?
> On Nov 8, 2020, at 8:53 AM, Rick Neilsen <neilsenrm@gmail.com> wrote:
>
> The problem is your Kolbs have a trim issue. The factory makes an
optional adjustable universal joint (this is the wing rear attach
fitting) that I think Dave is talking about and this is the best fix for
this problem.
>
> Rick Neilsen
> Redrive VW Powered MKIIIC
>
> On Sun, Nov 8, 2020 at 8:18 AM Watkinsdw <david.watkins0@gmail.com
<mailto:david.watkins0@gmail.com>> wrote:
<mailto:david.watkins0@gmail.com>>
>
> When I had my Mk III Classic, I had big washers in the rear attachment
point of the left wing. There were two on one side of the wing spar, and
one on the other side, within the u-shape receiver. By rearranging the
double stack to one side or the other, I could adjust the roll trim for
flying solo, or with a passenger. Don=99t know if this will work
for you, but it did for me..
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=499305#499305
<http://forums.matronics.com/viewtopic.php?p=499305#499305>
>
>
>
>
>
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Message 3
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Subject: | Re: heavy left wing, how trim tabs work. |
Of course my plane is one of the early model ones but I am curious.
did the plans come with rigging instructions for these planes?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=499326#499326
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