On Feb 4, 3:49*am, gemerson wrote:
It's fairly standard for tractors to have their tires filled with
water. *Curious if anyone has put water in their pneumatic tailwheel
to provide a little more aft CG. *Brass tailwheels exist, but they are
pricey.

Sounds like a really bad idea. The volume is so small that even
filling the inner tube completely will likely only give a liter of
water or so (2.2 lbs). If you do fill the inner tube to more than
50%, the damping qualities of the wheel will rapidly deteriotate since
water is incompressible (but then, so is brass).
Don't do it, look for a way to safely attach lead plates to the
bulkhead in front of the rudder or by other means.