The Murphy Builders Site

Posted: **Fri Feb 17, 2012 10:33 pm**

Maule had a shimmy problem too. The easy fix was to put a heavier spring
on the right side than the left so as to interrupt the harmonic. Worked
for me. I do think, though, that the pivot should be close to vertical.
(in relation to the ground, not the airplane)

Also ..... I have fitted a SCOTT 3400 tailwheel , which has improved
ground handling immensely .... but I sometimes get HORRENDOUS tailwheel
shimmy upon landing (mainly / always on tar) .... I suspect it has
something to do with the angle of the wheel / pivot point in relation to
the vertical (which it ISN'T ... as it is laying forward somewhat)
I suspect that the pivot shaft should be more vertical , even, perhaps
laid rearwards to stop this effect ... any ideas guys !?!?!
What do you reckon Wayne ?

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Posted: **Fri Feb 17, 2012 10:33 pm**

G'day Gordon !

I have already put a stronger spring on one side (sorry...shoulda mentioned it) ..... but the pivot is definitely way off vertical ... I'll bend the springs and make it so :-)

Thanks
Rick & Wendy Harper

----- Original Message -----
From: Gordon Mohr (gmohr@telus.net)
To: murphy-rebel@dcsol.com (murphy-rebel@dcsol.com)
Sent: Tuesday, November 05, 2002 4:57 AM
Subject: tailwheel shimmy

Maule had a shimmy problem too. The easy fix was to put a heavier spring
on the right side than the left so as to interrupt the harmonic. Worked
for me. I do think, though, that the pivot should be close to vertical.
(in relation to the ground, not the airplane)

Also ..... I have fitted a SCOTT 3400 tailwheel , which has improved
ground handling immensely .... but I sometimes get HORRENDOUS tailwheel
shimmy upon landing (mainly / always on tar) .... I suspect it has
something to do with the angle of the wheel / pivot point in relation to
the vertical (which it ISN'T ... as it is laying forward somewhat)
I suspect that the pivot shaft should be more vertical , even, perhaps
laid rearwards to stop this effect ... any ideas guys !?!?!
What do you reckon Wayne ?

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