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>I am building an LNC2 and would like more first-hand data on
> performance of the 320 vs. 360 (160hp vs. 180 hp).  It is soon
> time for me to get serious about an engine choice.

Cruise speed varies by the cube root of the horse power ratio.
V2=V1(hp2/hp1)**1/3
Cruise speed difference between a 180 and 160 hp is about 7 knots.

Rate of climb increases by the hp difference x 33,000/GW
If the aircraft GW is 1,800 and with a 20 HP increase the ROC increases by
366 fpm.

Having flown side by side with my 320 friend, the above numbers are good in
the real world too.  The performance difference isn't that much, but my
friend is bothered when I pass him even if it is only at 7 knots.  Get the
360 unless you happen to find a deal on a 320.

When I bought my IO-360B1F in 1994  it weighed 27 pounds more than the
comparable IO-320.

Jim Frantz
Lancar Network News
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