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<< Lancair Builders' Mail List >>
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> I will be buying a 2 seat Lancair soon (95% to 99.9% completed) and need
> all the info I can get.
>
> What are the benefits of the 235, 320, vs 360?
> I operate from a 1700ft grass airport, how well does the LNC2 hanldle
grass?
Hi Glenn, I have a 320 with 60 hours on it now. I thought long and hard
about whether to put in an O-360 or an O-320. I decided on a 320 and am
extremely happy with it. The O-360 is about 30 pounds heavier and requires a
heavier prop (maybe another 30 pounds extra). This extra weight up in the
nose requires more tail down force from the horizontal stab (trim drag). The
extra weight requires carrying more fuel for a given trip which increases
the weight even more. From what I've seen (definitely not a scientific
study) the 360's climb very slightly better than the 320 and perhaps use 100
feet or so less runway to get off. In cruise I believe that the 320's and
360's end up at about the same speeds. At 10,500 feet, I'm getting an honest
180 knots TAS and burning 7 gallons per hour. (Lazar ignition helps with the
fuel flow). I'm carrying 54 gallons with full tanks and flew a 1,000 nm leg
the other day (5 hours 25 min) and landed with 2 hours fuel in the tanks.
Can any of you 360 guys do that?
I made my first grass landings the other day. I have the Ong's Debongers
and standard gear on mine. I believe that the shock absorbers made the
difference in landing on a grass strip. If the grass is dry, smooth, firm,
unrutted with no holes for our little shopping cart wheels to fall into, no
sandy spots...and if you have one of the shock absorbers other than the
stock rubber rocks, then I believe that grass is fine. As for 1700 ft...I
wouldn't do it.
Bill Harrelson
N5ZQ
harrelson@erols.com
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LML website: http://www.olsusa.com/mkaye/maillist.html
LML Builders' Bookstore: http://www.buildersbooks.com/lancair
Please send your photos and drawings to marvkaye@olsusa.com.
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