geoff wrote:

In message , John Rumm
writes

Gnube wrote:


Try radio control model shops who specialize in combustion engined
"flattie racers" they use it, as do some aerobatics folk, for
attaching tuned pipe silencers to the manifold stub of their engines.
Comes as clear of coloured as I recall. Not particularly cheap though,
but prices may have mellowed as the years have passed.


This lot have some in small quantities - not sure if they have the
diameter you need though....

http://www.prestwich.ndirect.co.uk/

(BTW - damn good shop if you are into fast RC Boats!)

A coffee machine which can travel at 50 knots?


Easy if you throw it hard enough..