Sorry your about 35 years to late we patented our diesel disc back in 1975. The reason it works is the mass of a thin teflon disc is very little and what the disc sees is the average temperture between the cold fuel mist and the hot fire. The disc last as long as you fly the engine as this is a much lesser heat load then a bench. We were the first people to put a plastic inside of a combustion zone of as engine. Those that burn out the disc are those that bench run at fuel power and over heat the system. also if you don't clean out the old varnish deposits from castor oil from the glow runs you insulate the cylinder and don't let the heat out thus blowing a hole in the disc. when the Norel came along customers put our heads on the 061's with great results however the power shortened the life of the discs so we added a thin aluminum disc first then the teflon behined them and that works for quite awhile. A Norel .061 an a 6 X 4 turns between 18,500 and 19,500 Rpm and thats a bunch.