If there is not much movement in the bearings, my suspicion is that the tail wheel spring turnbuckles are not tight enough. If the tailwheel spring turnbuckles are too tight you get VERY immediate response on the rudders on the ground. If they are too loose you get a "waffling" "inconclusive" response to rudder input. This can lead to shimmy.
regards Rob Rob Thompson 0429 493 828 On Mon, Sep 21, 2020 at 6:01 PM Győző Horváth <[email protected]> wrote: > Hi Rob, > > Thanks for your advice. > We checked the shaft. > There is a tiny movement of the shaft. > Is there any acceptable limit (if yes, how it should be measured) or no > movement is required? > > BR > Gyozo > > 2020. szept. 20. dátummal, 8:45 időpontban Rob Thompson < > [email protected]> írta: > > > If your cables are properly adjusted, it is likely that the bearings on > the tailwheel shaft are a bit worn or the nut on the top of the shaft is > not tight enough. > Lift up the tail and check to see if there is any movement up and down or > side to side. > A small amount of forward pressure on the stick stops the shimmy. > > > regards > Rob > > Rob Thompson > 0429 493 828 > > > > On Sun, Sep 20, 2020 at 3:42 PM Győző Horváth <[email protected]> > wrote: > >> Hi, >> >> I often experience shimmy of the rear gear when I operate on concrete. It >> is linked to a certain speed during acceleration for take off and after >> landing as well. >> Springs and cables seem to be OK. Tyre is not worn. Pressure is OK. It >> happens on international airports with good quality asphalt as well. >> Does anybody of you have such experience? Why is it not allways, just >> often? >> How can I avoid it? How dangeruos it is to the glassfiber material of the >> tail. >> With many thanks and best regards >> Gyozo >> >> >> >> >> >> >> >> --------------------------------------------------------------------- >> You are subscribed to the Dimona Owners Group mailing list. >> This list is archived in public. http://waikeriegliding.com/dog/ >> To unsubscribe, send email to: [email protected] >> >>
