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  #71  
Old 07-27-2017, 09:38 PM
Driftdown Driftdown is offline
 
Join Date: Jan 2011
Location: Clearwater, Florida
Posts: 398
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Quote:
Originally Posted by rolick22 View Post
That's me, I'm selling my old style fuselage. (feels funny saying that) Will use the wings (will need to install a landing light in the Left wing) and the empennage.
Good for you Dave. I would do the same thing if I were in your position.
IMHO, the new deal maker is the new engine, fuel tank and reworked landing gear support structure.
Good luck selling your 'legacy' fuselage and moving forward.
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  #72  
Old 07-28-2017, 04:54 AM
WolfgangMN WolfgangMN is offline
 
Join Date: Sep 2015
Location: Germany
Posts: 3
Smile Next Step (Hopefully)

After having achived this a replacement of the 912iS with a 915iS for a EAB version of of RV12iS would lead to my dream machine. I hope Van's will "just" do it!
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  #73  
Old 07-28-2017, 02:30 PM
Steenos Steenos is offline
 
Join Date: Apr 2017
Location: Chattanooga, TN
Posts: 60
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When will the IS kits become available for sale?
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  #74  
Old 07-28-2017, 04:35 PM
Crafting N112DR's Avatar
Crafting N112DR Crafting N112DR is offline
 
Join Date: Oct 2013
Location: Powell, OH
Posts: 250
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I put down the 25% at Oshkosh, looking for Oct shipping
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David Rohrlick
PPSEL, A&P
RV-12iS Completed
Airworthiness signed off by the FAA 1/23/2020
First Flight on 3/14/2020
Phase I Finished on 5/7/2020

Need:
Paint?
Serial#12-0864
N112DR
https://youtube.com/c/CraftingN112DR
VAF donation made for 2020
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  #75  
Old 07-28-2017, 05:10 PM
Steenos Steenos is offline
 
Join Date: Apr 2017
Location: Chattanooga, TN
Posts: 60
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Do you mind me asking how much an iS fuselage costs?
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  #76  
Old 07-28-2017, 05:41 PM
Crafting N112DR's Avatar
Crafting N112DR Crafting N112DR is offline
 
Join Date: Oct 2013
Location: Powell, OH
Posts: 250
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$6,238.00 + $50.00 for iS option and you can also use the new fuselage with the ULS engine for $75.00.
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David Rohrlick
PPSEL, A&P
RV-12iS Completed
Airworthiness signed off by the FAA 1/23/2020
First Flight on 3/14/2020
Phase I Finished on 5/7/2020

Need:
Paint?
Serial#12-0864
N112DR
https://youtube.com/c/CraftingN112DR
VAF donation made for 2020

Last edited by Crafting N112DR : 07-28-2017 at 07:50 PM. Reason: .
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  #77  
Old 07-28-2017, 06:23 PM
rv9builder rv9builder is offline
 
Join Date: Jan 2005
Location: Irvine, CA
Posts: 873
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Quote:
Originally Posted by rolick22 View Post
$6,238.00 + $50.00 for iS option. You can also use the new fuselage with the ULS engine and save $50.00 on the fuselage kit.
According to the order form on the website, the ULS option is $75.00.

http://vansaircraft.com/pdf/order_fo...order-form.pdf

Did they tell you at the booth what parts are different between the two options and at what stage during construction you need to install them?
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RV-12iS Fuselage
RV-9A Project: Sold

VAF donation made for 2020
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  #78  
Old 07-28-2017, 06:38 PM
Steenos Steenos is offline
 
Join Date: Apr 2017
Location: Chattanooga, TN
Posts: 60
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I haven't even started on an RV. But the 12iS is very intriguing.
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  #79  
Old 07-28-2017, 07:48 PM
Crafting N112DR's Avatar
Crafting N112DR Crafting N112DR is offline
 
Join Date: Oct 2013
Location: Powell, OH
Posts: 250
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Yes your correct about the $75, missed that. I did not ask that because my only interest was the iS option.
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David Rohrlick
PPSEL, A&P
RV-12iS Completed
Airworthiness signed off by the FAA 1/23/2020
First Flight on 3/14/2020
Phase I Finished on 5/7/2020

Need:
Paint?
Serial#12-0864
N112DR
https://youtube.com/c/CraftingN112DR
VAF donation made for 2020
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  #80  
Old 07-31-2017, 02:03 PM
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rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
Default Real world experience.......

Van's engineering department was as interested as anyone, in what the actual fuel economy benefit of the iS engine is.

Well now we know.

The red prototype (N412RV) piloted by Proto shop guy Tony Kirk and the new iS airplane (N912VA) Piloted by Mitch Lock made the trip to OSH together.
They flew at close to the same weights and flew the same distance and flight profiles (together).
Total fuel for the trip east....

N412RV with ULS engine - 60 Gal
N912VA with iS engine - 45 Gal (A 25% reduction in fuel burn)

The prop pitch is set on both airplanes to values that we feel provides an equal level of speed performance (both airplanes achieve the same TAS at any given altitude when operated within the max. continuous RPM limitation of 5500 RPM)

What is interesting is that to get equal speed performance, the iS engine has its prop pitch set .4 degrees courser than that of the ULS airplane, but when both airplanes are flown side by side in a climb test at exactly the same weight, the iS airplane climbs 100 FPM faster.

We attribute this to the peak torque output of the engine being right at the RPM value that is typical in a Vy climb with the fixed pitch prop on an RV-12. In fact, even with .4 degrees more pitch, the iS engine is turning a higher RPM climbing at Vy than the ULS RV-12 does. Another factor likely having some influence is the iS having cold air induction fed via a NACA scoop on the right side of the cowl, vs the ULS ingesting ambient engine compartment air.
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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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