Roger Lee Posted August 2, 2010 Report Share Posted August 2, 2010 Posted form another forum for one of our members. Here is the FD wheel alignment procedure. Other aircraft wheel alignment procedures will work. Where can we find this published procedure ? as my tyre's are wearing uneven and a lot of UK CT's i have seen are as well Thanks Mike Originally Posted by Oz airangel There is a Flight Design published procedure for wheel alignment. Matcos may be good but it is not necessary to fix alignment. CTSW Wheel alignment.pdf Link to comment Share on other sites More sharing options...
Mike Posted August 3, 2010 Report Share Posted August 3, 2010 Thanks for that Roger seems a bit of a drastic way of adjusting tracking and am thinking it could weaken the main wheel axle mount , but i will check it and see if it is out by much and go from there Mike Posted form another forum for one of our members. Here is the FD wheel alignment procedure. Other aircraft wheel alignment procedures will work. Where can we find this published procedure ? as my tyre's are wearing uneven and a lot of UK CT's i have seen are as well Thanks Mike Originally Posted by Oz airangel There is a Flight Design published procedure for wheel alignment. Matcos may be good but it is not necessary to fix alignment. Link to comment Share on other sites More sharing options...
Runtoeat Posted August 3, 2010 Report Share Posted August 3, 2010 Mike, the FD wheel alignment adjustment procedure has one problem. If one has too much toe-in and adjusts the axle bracket to reduced this, this will increase or degrade the camber. The reverse is true then also. If one adjusts to reduce camber, the toe-in will be increased (degraded). This is due to the angle of the "hockey stick" axle bracket. When this is turned on the landing gear strut, it rotates the wheel in an arc. I had obvious excessive toe-in and camber on my CTSW with associated tire wear. When the chords started showing and it was time to install new tires, I bit the bullet and bought the Matco wheels, axles and brakes from Roger Lee. My wheels are now properly aligned and the tires are wearing even. This is the reason FD is now installing the Matco's on production aircraft and you find "flanged" axles on Cessna, Piper, etc. To achieve proper adjustment of wheels that reside on the end of an angled landing gear which is also angled in the fore or aft direction, one must have an axle which allows adjustment in the "toe-in" direction (plan view) and and in the "camber" direction (front or rear view). Link to comment Share on other sites More sharing options...
Rogerck Posted March 23, 2013 Report Share Posted March 23, 2013 We recently completed installation of Matco brakes on our 2006 CTSW. In the various threads, there have been several comments about how this system allows adjustment for wheel alignment. We inserted washers between the bottom of the axel flanges for a total add of approximately 1/16" to correct for camber/outside tire wear. To really get the axel parallel to the ground would have take 1/8'' or more. However, with this amount of washers, it felt like it would overstress the bolts, and perhaps bend them, if the meeting surfaces were tightened. It's kind of hard to create an 1/8" offset with bolts in precision perpendiculer holes. Wth all of the comments about the abilty to correct for alignment with the Matco brakes, its seems like the amount of adjustment is very limited before stressing or bending the bolts due to unparallel surfaces. Roger Kuhn Link to comment Share on other sites More sharing options...
Roger Lee Posted March 23, 2013 Author Report Share Posted March 23, 2013 Hi Roger, You shouldn't need more than 2 of the standard washers supplied. It may not have been perfectly straight up, but should have been close enough to give you good tire wear especially compared to the original camber. You are right though not to try and put 4 washers in place. Link to comment Share on other sites More sharing options...
Tom Baker Posted March 23, 2013 Report Share Posted March 23, 2013 The camber is just part of the outside tire wear. The ones who had bad tire wear were likely toed in more than they should be too. Link to comment Share on other sites More sharing options...
Rogerck Posted March 30, 2013 Report Share Posted March 30, 2013 When changing over to the Matco brakes I noticed a very slight wiggle where the main wheel axel bracket bolts through the main gear leg. The bracket became firm after re-torqueing the bolt going through the main. I would suspect that this hole or bracket is slightly elongated. Will re-torqueing this bolt do the trick or is it advisable to re-drill the hole and replace the bolt with the next size up? Maybe I should check with FD. Roger Kuhn Link to comment Share on other sites More sharing options...
Roger Lee Posted March 30, 2013 Author Report Share Posted March 30, 2013 Hi Roger, I have seen this before. Torquing the bolt down will do the trick. I have seen some like this 800 hrs. later and it was good to go. Link to comment Share on other sites More sharing options...
Tom Baker Posted March 30, 2013 Report Share Posted March 30, 2013 I think that there are some airplane flying around out there that had the holes elongated then tightened down to adjust the toe in problem. Link to comment Share on other sites More sharing options...
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