---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sat 06/29/19: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:38 AM - Re: Elevator and joystick throw (John Hauck) 2. 05:06 AM - Re: Elevator and joystick throw (Richard Pike) 3. 06:36 AM - Re: Elevator and joystick throw (racerjerry) 4. 05:31 PM - Re: Elevator and joystick throw (B Young) ________________________________ Message 1 _____________________________________ Time: 04:38:40 AM PST US From: John Hauck Subject: RE: Kolb-List: Elevator and joystick throw Gator/Kolbers: I haven't heard of this problem before. Usually elevator function is right on set up the way the plans and instructions indicate. Elevator cables need to be tight. A tiny bit of slack in the elevator cables will produce a lot of slop in fore and aft movement of the control stick. Geometry should be right on unless someone has changed it from the stock set up. Get someone to lock the elevator in place. Snug the elevator control cables until there is no play, fore and aft, in the control stick. You will be surprised how much this will improve elevator authority. That's what I have discovered. That's what I did to correct the problem. We recently made this correct to Larry Cottrell's FSII. I flew it loose, corrected, and flew it tight. Flew like a new airplane after that. John h MKIII Baldwinsville, NY -----Original Message----- From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of smgates Sent: Saturday, June 29, 2019 2:13 AM Subject: Kolb-List: Elevator and joystick throw Hi all, I've just finished building my Firestar II tandem and in the process of test flying. One thing that the person test-flying initially has noted is that the elevator authority feels a little limited, and 'spongy' feel at either extreme. Flying here in W Australia can be very turbulent and windy much of the time and he feels an improvement in the elevator authority would be useful. The joystick has a cable pivot point separation of 3" and the elevator control horn a cable pivot separation of 4". So we are thinking of increasing the joystick pivot separation to around 4" also. However, this would mean having to raise the front of the seat about 1/2". Has anyone found a similar problem and if so how did you address it? Thanks Steve -------- Gator Read this topic online here: http://forums.matronics.com/viewtopic.php?p=489907#489907 ________________________________ Message 2 _____________________________________ Time: 05:06:25 AM PST US Subject: Kolb-List: Re: Elevator and joystick throw From: "Richard Pike" I would also help to gap seal the elevator to the stabilizer. -------- 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. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=489911#489911 ________________________________ Message 3 _____________________________________ Time: 06:36:30 AM PST US Subject: Kolb-List: Re: Elevator and joystick throw From: "racerjerry" I built a very early Firestar II. I was kinda' disappointed that control cables NOW rubbed on the bottom of the fuselage tube at the forward end. In the Kolb Newsletter of July 1, 1995, Kolb suggested the addition of a control cable fairlead made from Lexan sheet to keep control cables from rubbing on the aluminum tube. I got fed up and added a second row of 4 control cable pulleys to one of the fuselage cross tubes to raise the cables and to enable me to properly tension the elevator cables without fear of sawing either aluminum or Lexan. Dunno' if my mod was necessary or even advisable, but it worked for me. Things may have changed since then. Jerry King -------- Jerry King Read this topic online here: http://forums.matronics.com/viewtopic.php?p=489915#489915 ________________________________ Message 4 _____________________________________ Time: 05:31:00 PM PST US From: B Young Subject: Re: Kolb-List: Elevator and joystick throw > > Before I started messing with cable locations I would put Vortex > generators underneath the horizontal stabilizer in front of the hinge area > and see if that increase your Authority I did that to my Mark 3 and it made > a significant difference. The v gs that I bought were stolspeed from John Gilpin in Australia. Try https://stolspeed.com/installing-vortex-generators Boyd Young Mkiii Utah ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/kolb-list Browse Digests http://www.matronics.com/digest/kolb-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.