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  #1  
Old 12-13-2014, 01:31 PM
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sheldon957 sheldon957 is offline
 
Join Date: Dec 2014
Location: Wellington, FL
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Default IO-540

I did a search and came up empty. Has or Is anyone building a RV-14 with the IO-540? I know Vans is pretty solid on their recommended engines but the rockets have been a pretty successful conversion.

I am interested in the 14 after considering the 7 for a while. It seems it is just too new of a design for many options to have been built out there.

How many 14's are actually flying? The order form doesn't have all sections even listed yet.

Thanks,

Sheldon
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  #2  
Old 12-13-2014, 01:34 PM
Ron B. Ron B. is offline
 
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Just one flying, factory prototype. All kits are not released/available yet, my guess at least another year to go.
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  #3  
Old 12-13-2014, 01:41 PM
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sheldon957 sheldon957 is offline
 
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Thanks for the info Ron. Another year before the rest of aircraft is ready? By what I have read here, there are close to 200 numbers assigned. That's a lot of people without a plane to finish. I hate waiting!

Last edited by sheldon957 : 12-13-2014 at 01:45 PM.
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  #4  
Old 12-13-2014, 01:52 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Quote:
Originally Posted by sheldon957 View Post
I know Vans is pretty solid on their recommended engines but the rockets have been a pretty successful conversion.
I guess it depends on how you look at it, but the rockets were not really a conversion of an RV to allow for a 540.
It was a new design, planning for the use of the 540 and it happened to use some RV-4 parts.

Putting a 540 on an RV-14 would be using an airframe specifically designed for nothing heavier than an IO-390. Doing so would require some major adjustments to correct the C.G., which was able to be compensated for during the design of the rocket.
Even then only a small part of the entire (re)design equation would have been solved.
Just a couple examples -
Landing gear loads?
Spin recovery?

Both of which were extensively tested (at least some of the reason for a delay in the release of some kit sections).

Put a 540 on the front, and all of that testing is null and void.
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Hubbard, Oregon
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  #5  
Old 12-13-2014, 02:02 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Quote:
Originally Posted by sheldon957 View Post
Another year before the rest of aircraft is ready?
The RV-14 kit is being designed around the same philosophy as the RV-12.
It will be a complete kit.
It will have a few different choices for a complete easy to install instrument panel / avionics, fully integrated to easily hook up to all of the harnesses and other equipment installed during the airframe build.
The powerplant kit will be the same way. Entirely complete and easy to install.

An RV-14 could be built in the traditional sense that RV's always have been, without purchasing these last two kits.

The final (fourth of six for the complete kit) airframe kit should be available sometime early 2015. This is what in RV tradition is called the finish kit. With it, and the other three kits that are available now, a builder can complete an RV-14 in the traditional manner of doing the panel and engine installation on their own (which some people prefer to do anyway).
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Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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  #6  
Old 12-13-2014, 04:31 PM
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Jesse Jesse is offline
 
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This was a little bit of a surprise to me from the beginning. Build a complete new airframe designed around a fairly new engine that costs as much as the 540 (at least close), and for which there are very few used engines available (angle valve 360's maybe). Why not design something for even better performance and out a 540 on the front from the drawing board?! The -10 has made great strides towards draining the used market for 540's, but they are still out there. Fewer parts to stock, etc. to me hay would have made much more sense for the -14.

All that said, I am sure they had their reasons, and it's their choice how they design it.
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  #7  
Old 12-13-2014, 04:43 PM
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Mike S Mike S is offline
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Default Welcome to VAF!

Sheldon, welcome to VAF
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  #8  
Old 12-13-2014, 05:01 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Quote:
Originally Posted by Jesse View Post
This was a little bit of a surprise to me from the beginning. Build a complete new airframe designed around a fairly new engine that costs as much as the 540 (at least close), and for which there are very few used engines available (angle valve 360's maybe).
Jesse,
You must comparing the IO-390 to an overhauled IO-540.

The EOM price for the 390 from Van's is actually slightly less than the OEM price of a new IO-360 (200HP)

The IO-360 (200) is also a good engine choice (weight is very close to that of a IO-390). There are still a lot of those in the used market.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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  #9  
Old 12-13-2014, 07:35 PM
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sheldon957 sheldon957 is offline
 
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Thanks for the welcome Mike!
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  #10  
Old 12-14-2014, 12:38 PM
RV6-KPTW RV6-KPTW is offline
 
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Location: Sebastian Fl X26
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Scott,

Is the IO360 200hp really a good choice? I have a really smooth A1D and a whirlwind prop (RV200) sitting in the wings if so. Weight is close for the engine, the prop is quite a bit lighter. I question the extra horsepower of the 390 - is the extra 10hp desired or needed?

Appreciate your thoughts.
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