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  #1  
Old 11-16-2012, 10:07 PM
RVguy RVguy is offline
 
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Default Super 14

I would like to start a discussion on the viablity of this option. I understand that folks have been dropping IO 540s in previous RVs with great success so would the RV14 not be a suitable candidate.
I have read Vans article about VNE, larger engines and High speed flutter but if a closer eye is paid to the ASI so as not to exceed VNE then wouldnt this concern be alleviated.
What I am also interested in is the extra strenght needed to the structure and how that would be accomplished..I understand that with the Harmon Rocket and F1 Rocket this is done by purchasing a third party kit but would a regular builder be able to fabricate the necessary hardware/components to accomplish this.

ps..I do realize that no one has seen any of the plans or construction manuals yet so we would of course be speculating on all this.
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Last edited by RVguy : 11-17-2012 at 08:09 PM.
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  #2  
Old 11-16-2012, 10:17 PM
gasman gasman is online now
 
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You need to talk to Steve Barns, http://www.vansairforce.com/community/member.php?u=8644 He built a Super 6 from the ground up.
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  #3  
Old 11-16-2012, 10:21 PM
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Quote:
Originally Posted by gasman View Post
You need to talk to Steve Barns, http://www.vansairforce.com/community/member.php?u=8644 He built a Super 6 from the ground up.
Thanks Warren, will do.
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  #4  
Old 11-17-2012, 05:14 AM
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pierre smith pierre smith is offline
 
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Steve, it's a TAS matter, NOT an indicated airspeed matter.

Van wrote an article entitled, "The gauge that lies" and was directly addressing VNE issues and that they're related to TAS.

A search should turn up the article.

Best,
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  #5  
Old 11-17-2012, 11:13 AM
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Jerry Cochran Jerry Cochran is offline
 
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Default VNE

Article by Ken Krueger here...http://www.vansaircraft.com/pdf/hp_limts.pdf
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  #6  
Old 11-17-2012, 01:35 PM
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Sam Buchanan Sam Buchanan is online now
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Quote:
Originally Posted by RVguy View Post
I would like to start a discussion on the viablity of this option. I understand that folks have been dropping IO 540s in previous RVs with great success so would the RV14 not be a suitable candidate.
The question begs to be asked..........WHY?
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  #7  
Old 11-17-2012, 02:26 PM
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tobinbasford tobinbasford is offline
 
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Quote:
Originally Posted by Sam Buchanan View Post
The question begs to be asked..........WHY?
Why would someone want to take a perfectly good Stits Playboy and:

-Replace the 75hp engine with a 125hp engine
-Redesign the cowl
-Enclose the open cockpit
-Replace the original externally strut braced wings with aluminum cantilever ones.

Hmmm....only an old fool would try and modify an experimental airplane.
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  #8  
Old 11-17-2012, 05:48 PM
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Sam Buchanan Sam Buchanan is online now
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Quote:
Originally Posted by tobinbasford View Post
Why would someone want to take a perfectly good Stits Playboy and:

-Replace the 75hp engine with a 125hp engine
-Redesign the cowl
-Enclose the open cockpit
-Replace the original externally strut braced wings with aluminum cantilever ones.

Hmmm....only an old fool would try and modify an experimental airplane.
Aw come on....I think we are beyond trite statements like that.

The RV-14 isn't even available and we are at least a year from a customer plane flying......even an experimenter needs to wait until the plane has field history before we talk about its "deficiencies".

My question of WHY still stands.
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  #9  
Old 11-17-2012, 06:53 PM
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Ron Lee Ron Lee is offline
 
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Quote:
Originally Posted by Sam Buchanan View Post
My question of WHY still stands.
Sam, you ask WHY?

I ask...Why not?

It does not have to mean that there is a deficiency in the stock RV-14.

We have some guy building a twin engine RV-6A. Not my cup of Classic Coke, but as long as he does it with sound construction considerations, why not?

We have a guy who wants to build an A model and operate off a grass/dirt strip with gopher holes. In my opinion, that is a tip-over waiting to happen.

Is a properly constructed Super 14 a safety issue?
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  #10  
Old 11-17-2012, 07:36 PM
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tobinbasford tobinbasford is offline
 
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Quote:
Originally Posted by Sam Buchanan View Post
I think we are beyond trite statements like that.
Nothing trite about my post Sam. Hypocrisy, now there's something we can talk about. Folks praise Vans all the time for what he's brought to the experimental world and he started this process by tinkering and modifying. In the case of the Stits, we're talking major modifications. But many of these same folks scoff at others when they want to modify their own RVs in ways that others may not agree with. It's experimental aviation for goodness sakes!

Quote:
Originally Posted by Sam Buchanan View Post
even an experimenter needs to wait until the plane has field history before we talk about its "deficiencies".
According to whom? And I don't think the original poster said anything about "deficiencies". He said "I would like to start a discussion on the viablity of this option."

In my personal opinion folks who experiment with their RVs are paving the way for the rest of us. Early RV-3 builder Art Chard's efforts led Van to the RV-6 and what about the pioneers of constant speed props and IFR cockpits. Vans never encouraged those things early on. Over the years there have been many "mods" to RVs that came from folks out in the field operating completely independent of the company and doing what Vans himself did back in the 1960s and many of these mods ended up benefiting all of us. Its good for our industry and its part and parcel to the spirit of experimental aviation.
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