Hey Coupers,
Have you read this? Pretty Kool, huh?
This is an exerpt from [EMAIL PROTECTED]
I hope this is of interest to everyone. It appears to me that we are
finally going to be able to select proper fuel for our birds.
Denny
N93990
Shawnee, KS
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------------------------------------------------------------------Getting Fuelish: FAA Follows Approval Of 82UL With 100LW... Aviation fuel may finally get the lead out, thanks to the second significant technological advance in a year: a 100LL avgas replacement. Earlier this year, an 80-octane avgas replacement -- dubbed 82UL, or ultra-low lead -- was announced by the FAA and the petroleum industry. However, that fuel is designed only for low-compression engines, with comparatively low power for their displacement. Now, thanks to continuing research into the technology behind 82UL, those who fly with larger, more powerful engines will be able to take advantage of new fuels, also. Dubbed 100LW -- or 100-octane lightweight -- the immediate advantage to pilots of this new fuel over 100LL will be obvious: a substantial increase in payload without changes to the airframe or the engine. Other advantages include more power at the same fuel flow or less fuel flow for the same power, reduced unburned hydrocarbon emissions and cleaner injector nozzles or carburetor jets. ...Molecular Engineering Allows Lighter Fuel, Greater Range... In all respects, 100LW is identical to 100LL except that it weighs 17 percent less per gallon (5.05 pounds at 60 deg. F). This phenomenal weight reduction is achieved by replacing nearly all of the large, heavy molecules in 100LL fuel -- which normally pass through the engine unburned -- with smaller, lighter molecules that burn completely at normal engine operating temperatures. With 100LW, each large molecule is replaced with two smaller molecules that occupy the same volume but weigh just half as much. The two combined molecules offer the same thermal efficiency as 100LL, but the same volume of fuel actually weighs less. Since about 19.4 percent of 100LL consists of the heavier molecules, an overall 16.63 percent weight reduction is achieved when using 100LW....Transition Plans Announced, Also Unlike the problems petroleum jobbers encounter in handling 100LL fuels and The new 100LW is completely compatible with 100LL and may be stored, transported, and transferred in the same tanks and pipes used for 100LL. Pilots may mix 100LW and 100LL in their tanks with no ill effects. The full weight savings, of course, won't be realized until the tanks are completely purged of 100LL. Still, the FAA will allow temporary increases in max gross takeoff weight of up to 15 percent until all 100LL fuel is purged from a plane's tanks. Limited quantities of 100LW will be available in the United States this summer and is expected to entirely replace 100LL by the year 2001. 100LW will be priced about the same as 100LL. -------------------------------------------------------------------------- -- ----
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