---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Tue 10/29/13: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:20 AM - Re: best way i have found to set alignment for tracking (Roy Spangler) 2. 02:24 PM - Re: Xtra Steering Problems (Rex Rodebush) ________________________________ Message 1 _____________________________________ Time: 05:20:31 AM PST US Subject: Re: Kolb-List: best way i have found to set alignment for tracking From: Roy Spangler Boyd, Best explanation of alignment on an ac that I've seen. Should be a big help to a lot of folks. thanks roy On Mon, Oct 28, 2013 at 1:18 PM, b young wrote: > the best way I have found to check the wheel alignment is to place a > straight edge behind the mains at axel height. > then use a carpenter square and align it against the straight edge and > against the edge of the tire,,,, > measure from the square to the rim ( not the tire, because of differences > in the rubber) at the front and rear of the rim. > repeat for other wheel. > > if the measurement from the square to front of the rim is the same as the > measurement from the square to the back of the rim, the wheel is > straight, if the front measurement is greater than the rear the wheel > has toe in. and if the front is less than the rear, the wheel has toe > out. > > for the best tracking on solid surface runway, my mkiii with the solid > tapered steel gear required about 0.6 deg toe in. on each side. if > your gear is more or less stiff the toe in requirements for your plane > will be different. > > I did the math,,, and although it is not 100 % exact,,, it is close > enough,,,, if the points on the rim front to back are 5.725 inches apar t > where you measure to the square, the degree of toe in or toe out > equals 10 times the different in front and rear measurements as measure d > in thousandths of an inch. example,,, if the difference between the > front and rear measurements is 0.062 thousandths of an inch,,, the toe > in or out is 0.62 deg > > if you want to do your own math,,,, the deg of toe in equals the tangen t > of the opposite side divided by the adjacent side. > > the tangent of 0.62 > = 0.010821 > opposite side divided by the adjacent 0.062/5.725 = 0.010829 > > or you can do an inverse tangent function Tan '1 power ( > 0.062/5.725)= 0.6204 or very near 0.062 *10 = 0.62 > > the way the inverse tangent function looks may vary pending on your > calculator. > > one last thing,,,, when measuring it is best to have the wheel placed on a > grease plate, which is made by putting a few pumps of grease between 2 > smooth aluminum plates, or similar materials.. > > this is probably worth archiving. > > boyd young > ________________________________ Message 2 _____________________________________ Time: 02:24:56 PM PST US Subject: Kolb-List: Re: Xtra Steering Problems From: "Rex Rodebush" Call Travis and about the steel legs. You won't have to worry about bending them. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=411707#411707 ------------------------------------------------------------------------------------- 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.