Tom,
Thanks for sharing the info. All very good information.
Swaid asked about 320's in 235 airframes also. The 320 in the 235
airframe here may not be a good one to use as the engine is not stock and is
underpropped. It gets 2550 RPM static and on takeoff with the fixed pitch
prop at field elevation of 1330. Climb is about 1300+ ft per min solo with
an aircraft weight of 1012 lbs. empty. I weigh 170 lbs.
I too have never utilized a grass strip. My personal runway
minimum length is 3000', although, as you have said Tom, the aircraft would
operate from a shorter strip. Short strips in Southern Oregon are all
usually at higher elevations. For me, it is not the takeoff distance that
is a concern, rather it is the landing distance. No stopping assist with a
fixed pitch prop. So, it's all with the brakes and with the roundout and
flair that starts before the numbers.
Gary Edwards
LNC2
----- Original Message -----
Sent: Wednesday, July 31, 2013 12:16
PM
Subject: [LML] Re. Lancair 235. Resend as
text was lost in original post.
I routinely flew my lancair 235 with a fixed pitch cruise prop
in and out of a 2600 foot paved runway at sea level. Climb performance was
around 650 ft per min solo with full fuel. I have never operated this aircraft
from a grass field, so I can't comment on the performance impact. My aircraft
weights 930 empty and has an O235 L2C with high compression pistons. I would
get around 2400 RPM static. I replaced the fixed pitch prop with a MTV1 and
now climb around 1300 fpm.
Last week, I departed from a 3800 foot strip
at sea level with a 130# passenger and full tanks at 100 degrees F. I weigh
170#. The limited climb performance was obvious, but I was able to accelerate
in ground effect to a safe speed long before running out of pavement. I feel
like this was the limit for my aircraft and ability. Later, with 20 minutes
less fuel, long runways at 104F, we had no problem whatsoever.
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