Pete,
After much discussion and speculation, the concensus seems to be that the most likely cause of your problem is either a parallelism error in one of the brake rotors(rotor not flat) or looseness of the main gear leg in the receptical. It might also be looseness of the hub on the lower end of the gear leg, or a combination of all three. Most evidence seems to point away from the nose gear strut itself, especially in the case of a mild-to-moderate 30 mph shimmy.
I created an access panel that allows me to jack on the spar, leaving the gear leg loose, but without that the accepted procedure is to jack on the lower surface of the wing under the main spar. Of course, it is best to to distribute the load as much as possible. And I would recommend jacking some
distance outboard to reduce the force required.
Gary Casey
After 250 shimmy free hours, I am now getting gear shimmy when my ES-P slows down through about 30 knots. I think I recall folks saying this is due to looseness in the upper main gear leg sockets. Is this correct, or is there another cause? My strut (new version) looks fine.
If it is loose main gear, how do you suggest that I get the main gear off of the ground? There are no obvious jack points.
Thanks for the advice!
Pete