VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #21  
Old 07-23-2017, 10:05 AM
f1rocket's Avatar
f1rocket f1rocket is offline
 
Join Date: Jan 2005
Location: Martinsville, IN
Posts: 2,260
Default

Quote:
Originally Posted by rvbuilder2002 View Post
In flight both fuel pumps are used full time so that there is no engine failure if one fails.
Just one pump is used for engine starting and taxi, and then during the run-up the second is switched on and the first switched off to confirm they will both run the engine individually, then the first one is switched back on so the are both operating for take-off and during flight.

The fuel flow is very accurate because no red cube is used. All engine info is derived from the CAN bus data in the ECM for the engine. Dynon developed some specific software to interpret and display all engine instrument data as derived from all of the resident Rotax sensors on the engine.
Very nice.
__________________
Randy Pflanzer
Martinsville, IN (II87)

www.pflanzer-aviation.com
Paid through 2043!
Lund fishing Boat, 2017, GONE FISHING
RV-12 - Completed 2014, Sold
427 Shelby Cobra - Completed 2012, Sold
F1 EVO - partially completed, Sold
F1 Rocket - Completed 2005, Sold
RV-7A - Partially completed, Sold
RV-6 - Completed 2000, Sold
Long-EZ - Completed 1987, Sold

Reply With Quote
  #22  
Old 07-23-2017, 10:23 AM
WayneJ WayneJ is offline
 
Join Date: Mar 2012
Location: Auburn, Washington
Posts: 18
Default Thanks to Van's, and more questions

When Tony and I flew to Aurora Friday we didn't expect to see the new RV-12iS. We assumed it would be gone to Oshkosh. To our surprise when we taxed up and parked, there it was in the hangar! We were welcomed inside and were able to examine the newest RV. Rian and Scott were happy to tell us all about it and answer all of our many questions. They are obviously very proud and excited about their new design and it looks great. (I'm wondering who will start a new build first, me or Tony.) Many thanks to Scott, Rian, Jose, Mitch and Fedosia for the warm welcome. They made for a very enjoyable visit. And they didn't know we were coming, we just showed up.

Scott, a couple more questions if you don't mind. Is there any kind of oil temperature control like the Thermostasis mod that many of us have installed on our 912ULS? And I didn't notice a canopy lock incorporated in the new latch design.
__________________
Wayne
Auburn, WA
120642
Reply With Quote
  #23  
Old 07-23-2017, 11:14 AM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 4,047
Default

Quote:
Originally Posted by rvbuilder2002 View Post
The engine.
I presume because of the way the ECM controls the fuel delivery and ign timing.

The ECM is behind the firewall (not in the engine compartment).
It doesn't make sense that the iS engine outputs more heat than the S model since the fuel burn is substantially less. Logically, there MUST be less heat going into the coolant, oil, cylinders and exhaust stream since more energy from the fuel is going into turning the crankshaft. Same power for less fuel burn equals higher thermal efficiency.
__________________

Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW- 417.4 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm



Last edited by rv6ejguy : 07-23-2017 at 11:32 AM.
Reply With Quote
  #24  
Old 07-23-2017, 02:39 PM
Piper J3's Avatar
Piper J3 Piper J3 is offline
 
Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 729
Default

Perhaps they're just trying to keep the electronics from going over thermal limit during ground operation and especially after engine shutdown with heat-soaking.

I always leave my oil door open after engine shutdown to allow heat to escape. I'm even thinking about placing a small whisper fan over the opening for 5 or 10 minutes to extract the heat more efficiently. Not my original idea... I saw this once being used on a Cassutt racing plane and I thought it was pretty neat.
__________________
-
Jim Stricker
Hinckley, Ohio
P/ASEL 1970 Sport Pilot since '04
80 hrs Flying Aeronca Chief 11AC
1130 hrs Flying 46 Piper J-3 Cub
LSRM-A Certificate 2016
RV-12 E-LSA #120058 AWC 7/12 Bought Flying 10/15 with 48TT - Hobbs now 317

Last edited by Piper J3 : 07-23-2017 at 02:45 PM.
Reply With Quote
  #25  
Old 07-23-2017, 04:15 PM
joedallas's Avatar
joedallas joedallas is offline
 
Join Date: May 2010
Location: Spring Hill Fl
Posts: 670
Default Earthx Battery

A lot of nice upgrades
I hope wing tanks are next

Is there any info on the EarthX battery size & model and if the stab fairings will work on the 1st generation 12

Joe Dallas
__________________
Joe Dallas
Kit-#12400
www.joesrv12.com
www.EAA1298.com
Reply With Quote
  #26  
Old 07-23-2017, 04:33 PM
WayneJ WayneJ is offline
 
Join Date: Mar 2012
Location: Auburn, Washington
Posts: 18
Default Heat soak

Jim,

That's exactly what they are dealing with and the reason for the louvers on top of the cowl. Scott said there is no problem with heat during flight but after shutdown on a hot day the temps exceeded the Rotax limits. Extensive testing was done and temps measured during development to be certain the sensitive (and expensive) electronic components were protected from heat damage. Problem solved with the additional ventilation provided by the louvers.
__________________
Wayne
Auburn, WA
120642
Reply With Quote
  #27  
Old 07-23-2017, 04:45 PM
Rick_A's Avatar
Rick_A Rick_A is offline
 
Join Date: Oct 2005
Location: Highland Village, TX
Posts: 1,364
Default Canopy question

Was the forward canopy bow (along the lower front edge of the windshield ) re-designed to provide better clearance for the G3X Touch screens?

I'd like to add my compliments to the re-design. It looks great. I may be tempted again!
__________________
Rick Aronow,
A&P, iRMT
Flying 7A Slider;
RV-12 (ELSA, Dual G3X), SOLD
Highland Village,TX

Last edited by Rick_A : 07-23-2017 at 09:55 PM.
Reply With Quote
  #28  
Old 07-23-2017, 05:10 PM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 4,047
Default

Interesting. We don't worry about our electronics after a hot shutdown on an air cooled installation. Rockwell does?
__________________

Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW- 417.4 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm


Reply With Quote
  #29  
Old 07-23-2017, 07:27 PM
RV12JT RV12JT is offline
 
Join Date: Jul 2017
Location: Keystone State
Posts: 30
Default

New member here on the forum. Currently looking at the SLSA version of the RV-12. Will the new 912iS be produced as a factory built unit?
Reply With Quote
  #30  
Old 07-23-2017, 08:52 PM
rv9builder rv9builder is offline
 
Join Date: Jan 2005
Location: Irvine, CA
Posts: 595
Default

According to Van's website, midway down this page, it says they plan to produce an SLSA version.

http://vansaircraft.com/public/rv12iS.htm

I don't think they have all the details posted yet for the SLSA.
__________________
Mark
RV-12 Project: Working on Empennage
RV-9A Project: Sold

VAF donation made for 2017

Last edited by rv9builder : 07-23-2017 at 08:54 PM.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 01:26 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.