Good trick Bill,

Those dewars are also handy for installing press-fit bushings. Just don't
drop the hockey puck in its frozen state!

Jim

"Bill Daniels" wrote in message
...

"Jim Phoenix" wrote in message
om...
If you need to only replace the wheels, like Bill said, they appear to
be very similar to hockey pucks and legend has it, that's what they
were. Certainly don't need an STC, if it were even classified as a
major alteraiton, your local IA can handle that process, but that
seems a bit excessive for tip wheels.

Jim

Shop trick: If you need to drill holes in a bunch of hockey pucks, freeze
them in liquid nitrogen. Once frozen, they drill just like aluminum. (LN2
is very cheap from industrial gas suppliers. They'll rent you a small
dewar
to transport it with.)

(If you fly a Schweizer, you'll NEED a bunch of hockey pucks with holes in
them.)

Bill Daniels