REFLECTOR: V-Twin in Airventure news
steve korney
s_korney at hotmail.com
Tue Jul 31 12:11:54 CDT 2012
If one want to fly a Velocity right away, I suggest they buy one that's already build... There is usually one available... Then just change the things you think you can make better.... That should take enough time in itself...
Steve
Date: Tue, 31 Jul 2012 12:00:50 -0500
From: velocityxl at fastmail.fm
To: reflector at tvbf.org
Subject: Re: REFLECTOR: V-Twin in Airventure news
I found building to the plans is very fast . Every change you make
to the plans add time exponentially.
Wing building went fast Fuselage went quick after that the brakes
were one and were holding very well.
If I were to put the amount of time I spent redesigning the plane it
would way out run the time I spent building.
seems every one on the reflector has a new way of doing things and
most of them good. But if you stay to the
plans you save a ton of time. So do not Blame the factory if you did
not follow directions and went on a different path.
It may be better in your opinion but defiantly not faster.
Ron
On 7/31/2012 10:27 AM, Andrew Judge
wrote:
Maybe it's only a fast-build offering? Then everything is
more homogenous? 800 hours would be more reasonable.
Best regards,
____________________________________________________________________________
Andrew
Judge
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From: Jones Nick <nick.jones at volvo.com>
Reply-To: Velocity
Aircraft Owners and Builders list <reflector at tvbf.org>
Date: Tuesday, July
31, 2012 11:22 AM
To: Velocity Aircraft
Owners and Builders list <reflector at tvbf.org>
Subject: Re:
REFLECTOR: V-Twin in Airventure news
Sounds
like a fish story to me. Looks like we have another
category to add to the list of “aviation fibs”; how
fast it goes, how much fuel does it burn, how high
it goes, how much does it carry, how far it goes,
and now how long does it take to build.
Best
regards,
Nick
and Connie Jones
Velocity
XL-RG
N10CN
99%
done 90% to go
From: reflector-bounces at tvbf.org
[mailto:reflector-bounces at tvbf.org]
On Behalf Of Peter
Braswell
Sent:
Tuesday, July 31, 2012 11:12 AM
To:
Velocity Aircraft Owners and Builders list
Subject:
Re: REFLECTOR: V-Twin in Airventure news
Editorial comment:
Uh, right
800 hours. Maybe multiply by 3 and add 1000. :)
Hate to
cynical but I just don't buy it …
-Peter
------------------------------------------------------------------------
"It's
a Jungle Up There": www.zuluworks.com
Great
Aviation Gear: www.sky-gadgets.com
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On Tue,
Jul 31, 2012 at 11:06 AM, Alex Balic <velocity_pilot at verizon.net>
wrote:
800
hours? Must be a super fast build…
From: reflector-bounces at tvbf.org
[mailto:reflector-bounces at tvbf.org]
On
Behalf Of Reiff Lorenz
Sent:
Monday, July 30, 2012 5:33 PM
To:
reflector at tvbf.org
Subject:
REFLECTOR: V-Twin in Airventure news
This was posted to
the Airventure news feed:
http://www.airventure.org/news/2012/120724_velocity-v-twin-cant-spin.html
Full article below
Reiff
Lorenz, Dayton, OH
Velocity XL-RG, 34%
complete
Currently working
on: Setting up a new computer in the
workshop.
The
Velocity Builders'
Virtual Hangar. Available 24/7 for
builders and owners:
https://liveconferencepro.com/guest/loginguest.php?id=d3a73e710c719626dd353d3b101be90f
Velocity
V-Twin Can't Spin
Velocity's V-Twin (photo by Mariano Rosales)
By
James Wynbrandt
No,
the small twin-engine
pusher with canards and
delta wings is not a
baby Avanti Piaggio.
It's the prototype of
the V-Twin, a new
offering from kit
company Velocity
Aircraft of Sebastian,
Florida.
"I've
been wanting to build a
twin-engine version of
our airplane for many,
many years," said Duane
Swing, chairman and
owner of Velocity
Aircraft. But with their
propensity to enter a
stall spin in the event
of an engine loss in
high-power, low-airspeed
operations, such as
during takeoff, "Twin
engines have lost favor
because of the high rate
of death with engine
failure," Swing noted.
"The idea was to build a
Velocity twin with no
VMC (minimum
controllable airspeed),
where you couldn't slow
to the point where you
could stall, and
therefore there's no way
to spin."
In
theory, a canard
aircraft such as the
Velocity can't spin
because the canard
stalls before the wing,
lowering the nose, and
keeping sufficient
airflow over the wing to
keep it flying.
Engineers Swing
consulted agreed the
same principal would
apply to a twin-engine
canard aircraft,
convincing him to pursue
his longstanding goal.
"Last
year at Oshkosh I said,
'I'm going to do this,'"
Swing said. "In October
I told our guys the
company can't afford to
fund this, so the whole
cost is coming out of my
pocket, and you guys
know what you're doing,
so let's build a twin.
Six months later we had
it flying."
The
completed aircraft was
intended to be
proof-of-concept
aircraft, to be followed
by a prototype from
which parts for the kit
version would be made.
But the airplane flew so
well that "right after
the first flight it
became apparent this was
not just a concept
airplanes, it was going
to be the prototype."
After
its debut at Sun 'n Fun,
Swing and company pilot
John Abraham subjected
the aircraft to more
rigorous flight tests,
"doing things most twins
would not, like full
stalls with one engine
shut down, to prove we
can't get it to stall,
eliminating the major
problem of other twins,"
Swing said.
The
prototype at the
Velocity display
(exhibit No. 11) is
powered by two 160-hp
Lycoming IO 320 engines.
Fuel burn of about 6 gph
per engine in economy
cruise yields 170-plus
knots and about 1,400 nm
range. Single-engine
climb is about 400 fpm
up to 8,000 feet, and
from 8,000 to 12,000
feet the V-Twin will
hold altitude on one
engine.
The
company expects the
airframe to support
engines up to 250 hp.
Velocity is also
designing a six-place
version with a 2-foot
cabin extension and is
talking to Delta Hawk
about offering a diesel
engine option.
"We're
now just waiting to
build one more in our
shop so we can complete
the construction phase"
to document the building
instructions for kit
buyers, Swing said.
V-Twin kits start at
$110,000, and Velocity
estimates cost of the
completed aircraft with
engines and glass panel
will be about $250,000.
Estimated construction
time is about 800 hours.
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