|
Do I hear a challenge?? I
haven't been beaten yet by any 320/360 LNC-2. ;)
We did have an LNC-2 that we
stuffed a IO-360 angle valve 200 HP and added all the tricks. It was faster, but
only by a few knots. It crashed last year, sorry to say.
But as you can see by your own
numbers, you've hit the 200 knot wall. On the angle valve engine LNC-2 we had on
the field, it was at least a good 40 HP over the parallel valve LNC-2's here. It
was only 5 knots faster on a good day then the others. It climbed better and
burned more fuel better but still had to push past the 200 knot wall. We also
have a 320 powered LNC-2 ( won Oshkosh Bronze 2006 ) and it easily hits 200
knots but it's straight, light, has all the tricks and rigged right.
Like I was saying before,
there's more to getting these planes to go faster then just horse power. Every
airframe design has a power to drag limit just ask any designer. If that wasn't
true then a LEG would go twice as fast because it has twice as much horse power
and an LNC-2. LEG is only 30 knots faster with
400 HP.
Randy
Stuart
LNC-2
----- Original Message -----
Sent: Wednesday, February 13, 2008 4:00
PM
Subject: [LML] Re: Cold Induction
Randy, et al,
I found that there is no wall except from power applied after drag has
been addressed (uh, maybe flutter is the limit). I file for 194
KTAS. I see 176-181 KIAS at 5000 to 8000 MSL at or near 25
squared. But, the real test is to race from point to point and have
somebody else time the whole durn thing.
2002 Sun 100, 202.2 Knots. As close to sea level as I'll ever
get.
2003 Air Venture Cup from Kitty Hawk -> Dayton -> Fond du Lac,
191.4 Knots. OK, not so good 'cause of the wind, weather, 6000'
mini-mountains and a 6 Knot bug penalty in Illinois (845 NM, 2
days). Hah, after Illinois the dirtied-canard planes couldn't slow down
for fear of falling out of the sky. Beat all kinds of higher powered
planes.
2004 AVC Dayton -> Fond du Lac, 205.4 Knots (385 NM, smooth air at
2100 MSL).
2006 AVC Dayton -> Fond du Lac, 202.3 Knots. Beat a turbo
charged 360.
Or, at the final Lancair 100, September 2006 in Redmond
(3000 MSL Top Gun terrain), "they" measured me at 210+ Knots. I beat
scads of 360's 'cept for Chris Zavatson.
Not bad for a 9:1 injected 320, EI, ram air and some other itty
bitty adjustments, more added each year after 2002.
Wanna race?
Scott
Krueger AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL
(KARR)
Pilot not TSO'd, Certificated score only >
70%.
In a message dated 2/13/2008 12:09:20 P.M. Central Standard Time,
randystuart@hotmail.com writes:
It's hard to get your
LNC-2 past 200 kts., that seems to be the wall on the design for these
rockets.
|