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#26
December 31st 03, 09:32 PM
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"Mike Rapoport" wrote:
The range on your 172 RG is 600nm Nope. 135 KTAS @ 10 GPH, 62 gal usable = 810 NM absolute range @ 75% power. The turbine Bonanza burns 21GPH block speed to produce 190kts So the turbine Bonanza needs about 66 gallons to fly 600nm which weighs 444 lb. So it needs 90 gal. to go 810 NM., about 610 lbs. The piston A36 Bonanza has a useful load of 1400lbs leaving 956lbs of useful load on a 600nm flight which is roughly 50% more that your 172RG. The turbine Bo' in the article has a useful load of 1160 lbs., leaving a useful load over the same range of 550 lbs.; 100 lbs. less than my 172RG. Presumably the turbine is lighter and the advantage is even greater. Evidently not. I don't know if the 600mn range figure for the 172RG includes a reserve, but even if it does, the Turbine Bonanza has significantly better payload over ANY distance. Nope. -- Dan C172RG at BFM 
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