-------------- Original message from "Mark Ravinski" <mjrav@comcast.net>: --------------


> Try spinning the wheels ( on jacks ) just to see if they wobble.
> Then dismount the tires and tubes and inspect, remount.
> It sounds like nosewheel shimmy also. Make sure you have good shimmy
> dampening in the strut and tight nosewheel bearings. Then change the
> nosewheel tire and tube if the problem persists.
>
> Mark Ravinski
> 360 1443 hrs
>
>
> ----- Original Message -----
> From: "Tom McNerney"
> To:
> Sent: Thursday, July 31, 2008 3:26 PM
> Subject: [LML] LNC2 Vibration
>
>
> Before I go and over engineer a problem, I thought I would get every ones
> expert advice first. It clearly has worked well for me in the past. (Thanks
> Grayhawk)
>
> I have what feels to be a classic case of warped rotors, but that isn't it.
> About the last half of the roll out I start to get a vibration from the
> right main gear. Or at least I think it is the right side. Thinking it was
> an easy fix I replaced the rotors with a new set. I think it is better, but
> that could be just in my head. The vibration is much worse under braking,
> but does exist while just rolling. As most vibrations, it seems to have a
> peak intensity at a certain speed. 30-50 mph I would guess. This has the
> original rubber cushion landing gear.
>
> So, here are my ideas..
>
> Bad tire that is out of balance? Waaay out of balance. They are Chang Shin
> tires, so maybe I got what I paid for. haha
>
> Out of Alignment? This aircraft has had the service bulletin completed
> regarding the main gear reinforcement. Could this have caused an alignment
> issue?
>
> Nature of the beast? It has had this problem from the day I purchased it, so
> maybe it is just me. Although I hope not!
>
> Would love to hear some ideas or past experience with this.
>
> Thank a ton!
> Tom McNerney
> N54SG
>
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