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02-08-2015, 06:49 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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How about putting two engines in the same engine compartment?
Do any of you remember this twin Cozy Mk IV?
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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02-08-2015, 06:52 PM
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Join Date: Feb 2015
Location: Rhode Island
Posts: 23
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Quote:
Originally Posted by aerhed
Tell your buddy about the old 80/20 rule. 80% of single engine accidents are walk-aways. Only 20% of twin accidents are.
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It's important to note that this statistic only accounts for reported accidents. A single engine failure in a twin that then proceeds to land safely is generally not considered a reportable event.
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02-08-2015, 07:11 PM
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Join Date: Nov 2011
Location: Aurora, OR
Posts: 841
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Just buy two RV-10 fuse kits and start cutting? 
__________________
Greg Hughes - Van's Aircraft - Community, Media, Marketing
Van's web site | Instagram | Facebook
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Building RV-8A since Sept 2014 (N88VX reserved)
Dual AFS 5600, Avidyne IFD 440, Whirlwind 74RV, Superior XP IO-360
VAF build thread - Flickr photo album - Project Facebook page
Aurora, OR (EAA Chapter 105)
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02-08-2015, 07:15 PM
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Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,767
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Quote:
Originally Posted by Charles in SC
As far as building a homebuilt twin, I would like to see something along the lines of the old Wing Derringer. As I remember it they had two seats and two Continental GTISO 520 engines. Talk about single engine performance, I think that would do it. That would be like an RV 7 with two turboed 375 hp engines.
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The Wing Derringer had 160 HP on each side.
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02-08-2015, 07:49 PM
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Join Date: Feb 2008
Location: Austin, TX
Posts: 179
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Quote:
Originally Posted by Autoreply
Quite a few people feel that with centerline trust, a light twin would be a good alternative.
2 VW's for a two-seater, or maybe two Rotaxes (Rotaii?)/ULpower 4-bangers for a 2+2.
Here is a lot more discussion:
http://www.homebuiltairplanes.com/fo...tlemaster.html
With an otherwise simple plane (fixed gear etc) that'd be something that might be in the same league as an RV in terms of operating cost and performance.
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I can't believe 5 hours went by and nobody else noticed...
Autoreply, welcome to VansAirforce!
I was also thinking about a twin kit. It would need 6 seats, and an option for 360's or 540's.
But then again, I know of a Baron on at the home field with two overhauled engines for less than the cost of a RV-10. Hmmm....
Last edited by chipf : 02-08-2015 at 07:53 PM.
Reason: Fixing user name
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02-08-2015, 08:13 PM
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Join Date: Jun 2010
Location: Anchorage, Alaska
Posts: 132
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Quote:
Originally Posted by KRviator
IF you're gonna build a Cri Cri to build twin time, might as well strap a pair of jets to it so you can build twin turbine time!

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I'm almost as passionate about model aircraft as I am about full scale. I fly everything from Control Line models to Radio Controlled jets.
A Cri Cri powered by a couple of JetCat turbines (normally used on models) has got to be something!
https://www.youtube.com/watch?v=7Y-AL3YfWzM
__________________
Bob Edison
RV-7 N749ER...(GO NINERS)
ATP CFI-II-ME
Anchorage, Alaska
Let me know if you're RVing to Anchorage!
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02-08-2015, 09:02 PM
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Join Date: Nov 2010
Location: ____
Posts: 829
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You can have your twins....
My very first actual multi engine jet flight, we lost two PW615's in actual IMC at 32,000 ft. 423 hours since new. Shut the first one down as it lost oil pressure. The LH side lost oil pressure about 2 minutes later. It felt like I had swallowed a cup of concrete. We did get back on the ground. ATC got everybody out of the way and gave us a very large 270 onto the localizer before we hit the clouds and ice. At a break in the checklists, I told the Left seat I wished I was back in my rocket and twisting my own wrenches. His response was "I believe you." After much investigation it was written up as a computer glitch, however a few days later, the LH engine seized in flight ! (less that one flight hour later) Massive compressor stall as # 3 bearing welded itself solid, filling the cabin with smoke with the owner and his family on board.
You can have your twins. I'll take the RV 10 or the Rocket every time.
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02-08-2015, 09:06 PM
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Join Date: Aug 2006
Posts: 703
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Quote:
Originally Posted by BobTurner
The Wing Derringer had 160 HP on each side.
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You are correct, most of the Derringers had 160s.
The one I was thinking of with the GTISO 520s was the Beagle.
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RV 7
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02-08-2015, 09:26 PM
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Join Date: Jun 2010
Location: Anchorage, Alaska
Posts: 132
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Quote:
Originally Posted by F1R
After much investigation it was written up as a computer glitch, however a few days later, the LH engine seized in flight ! (less that one flight hour later) Massive compressor stall as # 3 bearing welded itself solid, filling the cabin with smoke with the owner and his family on board.
You can have your twins. I'll take the RV 10 or the Rocket every time.
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What make & model jet was it?
__________________
Bob Edison
RV-7 N749ER...(GO NINERS)
ATP CFI-II-ME
Anchorage, Alaska
Let me know if you're RVing to Anchorage!
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02-08-2015, 09:30 PM
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Join Date: Nov 2005
Location: KRTS
Posts: 1,798
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Quote:
Originally Posted by rookie1255
Why is the velocity v-twin too expensive to build? If you can afford to quick build an RV-10 the velocity can't be too much more. The velocity v-twin kit price is for a quick build kit. Used engines would help with the cost too. Finding used Lycoming IO-540s is tough.
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The kit itself is north of $110K.
Add two IO-320's (what it uses), props, and a panel... you're into it another $100K easy. Interior, building, etc... you'll be $300K before it ever moves under it's own power. It'll be a sexy $300K though.
__________________
Next?, TBD
IAR-823, SOLD
RV-8, SOLD
RV-7, SOLD
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