---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Tue 02/28/06: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:37 PM - Nose wheel shimmy (richard walker) 2. 11:28 PM - Re: Nose wheel shimmy (TeamGrumman@aol.com) ________________________________ Message 1 _____________________________________ Time: 07:37:22 PM PST US From: "richard walker" Subject: TeamGrumman-List: Nose wheel shimmy --> TeamGrumman-List message posted by: "richard walker" Hey all I just purchased an AA5 N6542L with wheel pants and when I set the nose wheel down on landing she shimmies and I have to pull it up as long as I can then set it down. Is there a fix for this that some one may know about!! hope for help Rick ________________________________ Message 2 _____________________________________ Time: 11:28:20 PM PST US From: TeamGrumman@aol.com Subject: Re: TeamGrumman-List: Nose wheel shimmy --> TeamGrumman-List message posted by: TeamGrumman@aol.com two things to look at 1) with the nose off the ground, first spin the tire by hand. It should spin no more than 1 revolution. That is, LESS than one revolution. If not, tighten the axle bolt nuts (you'll need two 1/2 inch sockets/ratchets.) 2) try pushing the the nose gear wheel pant side to side. Push from anywhere near the back of the wheel pant. Technically, you need to rig up a fish scale, tighten (or loosen, as required) the nose fork bolt until you reach somethin like 22 in-lbs (or was it ft-lbs?). THe truth is, there is nothing magical about the fish scale. Google search Belville washers, do your own research, whatever. What you need to do is compress the the washers roughly 75%. As it turns out, there are many ways to install the washers. 22 fish-scales will get you various amounts of compression depending on how you do the washers. Before you get started, take it all apart. Clean up everything. INSIDE the nose fork, you need one thich and one thin thrust washer (two washers total) A new "O" ring. Grease everthing with No. 22 Aeroshell grease. on the OUTSIDE, I use one large area flat washer against the nose fork. You need to protect the aluminum. Then, 4 Belville washers. Then, one small area washer against the nut. Like this. | <<>> | nut. Put a thin film of grease on these too. They are steel and they will rust. Assemble the washers and nut. Tighten until you fell the washers compressing. They'll compress a lot. Push on the back of the wheel pant (as ytou tighten) until you feel a fair amount of drag on the wheel pant. If you tighten it all the way until the washers are compressed, just back off on the nut to where 22 fish-scales are. Gary