Today's Message Index:
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1. 06:16 AM - Re: Early 80's Kolb UltraStar aerobatics (13brv3)
2. 07:14 PM - Rear wing mount universal fitting play? Tail shake? (3benny3)
3. 08:22 PM - Re: Rear wing mount universal fitting play? Tail shake? (Richard Pike)
Message 1
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| Subject: | Re: Early 80's Kolb UltraStar aerobatics |
Hey, if it isn't the wild man himself! Great to hear from you Dennis. Hope you've
been well. Did you pull that video out of the dusty archives?
Rusty
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http://forums.matronics.com/viewtopic.php?p=491435#491435
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| Subject: | Rear wing mount universal fitting play? Tail shake? |
How much if any play (can pick up rear of wing by rear mount 1/4in) play is in
the castle nut the bolts universal to the fuselage frame and from universal to
wing. Another notch on the castle nut is too tight, while where it is, is to
lose I believe. Thinking about using very thin washers to get a "half notch" on
the nut. Anyone else have play here, if so how much?
On another note, seems like everyone's horizontal and vertical stab have some
flutter/vibration in them. How much do you have if any and how much is ok? Anything
you have done to help stabilize/stiffen this area?
--------
912 King Kolbra
NC27
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| Subject: | Re: Rear wing mount universal fitting play? Tail shake? |
Not exactly sure of what your question is asking, but here are some things I have
learned:
You can scrounge/create a very thin washer to put under your rear universal joint
big castellated nut and get the play down to very minimal.
You can fit as many washers as you need around the fitting that comes out of the
wing root rib & joins said universal fitting to take up virtually all the slack.
Keep fooling around with it, while mine is not totally tight, play is probably
less than 1/16", and in flight, is unnoticeable.
If your tail cables are tight, flutter in the horizontal stab will be unnoticable.
All Kolb vertical stabs/rudders have slow pulse flutter in them, if you take
your feet off the rubber pedals the rudder will start to flap. So keep your
feet on the pedals!
Or put a counterweight on your rudder similar to what Kolb sells for the ailerons.
Like this:
http://oh2fly.net/oldpoops/pg6.htm
--------
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kolb Firefly Part 103 legal
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing.
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