Your right, the manufacturers of those belts will ""NOT"" sell you one
if you even mention the application is closely related to aviation. Ya
just say is for a conveyor system or some other industrial setup. I
think the belts are somewhere around 70 bucks.

Don't tell them then.


But if I recall the Enstrom helo uses a Gilmer belt for main
transmission drive and oneother certificated helo had two or three of
them through the tailboom for tailrotor drive. I'm sure the
manufacturers knew.