REFLECTOR: V-Twin in Airventure news

nmflyer1 at aol.com nmflyer1 at aol.com
Tue Jul 31 12:11:48 CDT 2012


Absolutely Ron! 

I built everything myself and found most of the fuselage construction pretty easy & straightforward. Designing and building the panel took some time. Going with my own engine install was the biggest time culprit, but it sure has been fun. Time consuming, but fun.

Back from OSH, recharged and color sanding. 

Kurt 



-----Original Message-----
From: Ron N VelocityXLFG <velocityxl at fastmail.fm>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Sent: Tue, Jul 31, 2012 11:01 am
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.




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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
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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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