O. Sami Saydjari wrote:

: make the short list. My used aircraft book does not list range in the
: spec sheet. it lists fuel capacity, but it does not list cruise burn
: rates, so it is hard to figure these out. I am just trying to tap into

You can estimate cruise fuel burn for a piston engine airplane by using
Fuel Burn (G.P.H.) = Engine HP / 18

This will get you an answer for 75% power, leaned to ROP operations, within
1 GPH or so.

Ovation2 = 280 HP, becomes 15.5 GPH (actual is about 15 GPH)
Piper Archer = 180 HP, becomes 10 GPH (actual is about 9.5 GPH)
Piper Navajo = 620 HP, becomes 34.5 GPH (actual is about 36 GPH)
Cessna 150 = 100 HP, becomes 5.5 GPH (actual is about 5 GPH)
Mooney 231 = 210 HP, becomes 11.6 GPH (actual is about 11 GPH)

Hope this helps,
--
Aaron Coolidge (N9376J)