• The Biplane Forum is a large global active community of biplane builders, owners and pilots. From Pitts to Skybolts, to older barnstormers, all types are welcome. In addition to our active community, our content boasts exhaustive technical information which is often sought after for projects and maintenance. This information has accumulated over the 12+ years the forum has been in existence.

    The Biplane Forum is a private community. Subscriptions are only $49.99/year or $6.99/month to gain access to this great community and unmatched source of information not found anywhere else on the web. We are also a great resource for non biplane users, since many GA aircraft are built the same way (fabric and tube construction). Annual membership also comes with two BiplaneForum.com decals.

Lang tailwheel shimmy


Well-Known Member
Supporting Member
Sep 30, 2019
Reaction score
I have about 30 landings on a Lang tailwheel, started shimming last two landings. Tailwheel assy was not new prior to my acquisition, hours unknown.
I discovered a little movement in the rudder to steering horn, fixed that.
As far as tailwheel set-up: how much slack in the chains should there be?
How tight should be the nut on top?
Geometry looks ok, don’t think I bent leaf spring, but something just changed.
Thanks for any suggestions.

I’ve currently got about 1/2 link of slop
On each chain


Latest posts