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  #1  
Old 03-15-2017, 06:59 AM
bernsbm bernsbm is offline
 
Join Date: Nov 2015
Location: Mequon, WI
Posts: 21
Default Flap position indicator in an RV12

Confession... More than once I've been guilty of leaving my flaps down on takeoff while accelerating past 82 kts. I'd like to install a simple indicator on my Skyview display that would light up when flaps are down (similar to the canopy or spar pin indicators). I'd probably locate it near the RPM readout, as I check this several times on takeoff to confirm the engine is developing full power. Has anyone done this or something similar? Thanks in advance for any suggestions!

Barry
N12BB RV12 flying (~40 hours)
Mequon, WI
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  #2  
Old 03-15-2017, 07:07 AM
DaleB's Avatar
DaleB DaleB is offline
 
Join Date: Sep 2012
Location: Omaha, NE (KMLE)
Posts: 1,688
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This is one reason I quit using flaps for takeoff. D180 here, sorry I can't help with the Skyview. A microswitch to tell you when the flaps are fully up would be pretty easy, but I don't know how to get that to display.
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Omaha, NE
RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
Fisher Celebrity (under construction)
Previous RV-7 project (sold)
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  #3  
Old 03-15-2017, 09:13 AM
John-G John-G is offline
 
Join Date: Jan 2012
Location: Northeast Ohio
Posts: 448
Default

Barry-

I don't think adding a flap indicator will be all that hard. Section 7 of the Dynon SkyView System Instillation manual (version 14) shows how to do it ... in particular, page 7-72 shows an example of creating a contact sensor input. You will want to be creating a contact sensor .... much the same as the stall warning or canopy latch. If you look at the wiring diagrams the stall warning is wired to Pin 11 of the EMS module and the canopy latch is on Pin 12.

Pin 10 is vacant so that would be a good choice for adding your flap deployed warning indicator. Wiring would be done like the canopy micro switch where when the flap handle is moved, a ground is passed through the micro switch to pin 10 of the 37 pin WH-00020-1 ES-00057 female connector that plugs into the EMS module.

By performing the steps in section 7 of the SkyView Instillation manual to program pin 10, you will end up creating a configuration that can be saved as a .DFG file from the SkyView so you won't lose your settings moving forward. Below is a sample of that file that shows a NON-PROGRAMED Pin 10 along with the programmed Pins 11 and 12 (stall warning and canopy warning respectfully) for comparison.

Although I have not personally added any sensors to my RV-12 yet, this should help getting you moving in the right direction.

c37_p10={
valid=0
name=
id=
alarm_type=OFF
range={
max_display=30
min_display=0
range1_valid=1
range1_top=30
range1_bot=25
range1_name=R1
range1_color=RED
range2_valid=1
range2_top=25
range2_bot=20
range2_name=R2
range2_color=YELLOW
range3_valid=1
range3_top=20
range3_bot=10
range3_name=R3
range3_color=GREEN
range4_valid=1
range4_top=10
range4_bot=5
range4_name=R4
range4_color=YELLOW
range5_valid=1
range5_top=5
range5_bot=0
range5_name=R5
range5_color=RED
}
show_units=1
}

c37_p11={
valid=1
name=STALL
id=CONTACT
alarm_type=OFF
range={
max_display=30
min_display=0
range1_valid=0
range1_top=2
range1_bot=0
range1_name=PUSH
range1_color=RED
range2_valid=0
range2_top=5
range2_bot=2
range2_name=
range2_color=GREEN
range3_valid=0
range3_top=20
range3_bot=10
range3_name=R3
range3_color=BLACK
range4_valid=1
range4_top=5
range4_bot=2
range4_name=
range4_color=BLACK
range5_valid=1
range5_top=2
range5_bot=0
range5_name=PUSH
range5_color=RED
}
show_units=1
}

c37_p12={
valid=1
name=CANOPY
id=CONTACT
alarm_type=OFF
range={
max_display=5
min_display=0
range1_valid=1
range1_top=5
range1_bot=2.5
range1_name=OPEN
range1_color=RED
range2_valid=1
range2_top=2.5
range2_bot=0
range2_name=CLSD
range2_color=GREEN
range3_valid=0
range3_top=20
range3_bot=10
range3_name=R3
range3_color=GREEN
range4_valid=0
range4_top=10
range4_bot=5
range4_name=R4
range4_color=YELLOW
range5_valid=0
range5_top=5
range5_bot=0
range5_name=R5
range5_color=RED
}
show_units=1
}
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www.dogaviation.com
RV-12 Wings, Empennage, Fuselage, Finishing, Avionics and Powerplant kits all completed
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Last edited by John-G : 03-15-2017 at 09:22 AM. Reason: typo
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  #4  
Old 03-15-2017, 10:48 AM
Mich48041 Mich48041 is offline
 
Join Date: Apr 2008
Location: Riley TWP MI
Posts: 2,512
Default

Do you have a switch installed to monitor the flap position? I installed one on my D-180 equipped RV-12. See picture HERE.
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Joe Gores
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  #5  
Old 03-15-2017, 11:14 AM
Piper J3's Avatar
Piper J3 Piper J3 is online now
 
Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 698
Default

It would be nice if the D-180 was smart enough to see added flap switch and marry it to >80 knots airspeed to give both visual and audible warnings. Oh well, save money for eventual SkyView upgrade...
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Jim Stricker
Hinckley, Ohio
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80 hrs Flying Aeronca Chief 11AC
1130 hrs Flying 46 Piper J-3 Cub
RV-12 E-LSA #120058 AWC 7/12 Bought Flying 10/2015 with 48TT - Hobbs now 306
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  #6  
Old 03-15-2017, 11:23 AM
Mitch757 Mitch757 is offline
 
Join Date: Aug 2005
Location: Falmouth, MA
Posts: 252
Default

I also added a micro switch like Joe to the flaperon mixer arm and wired it to C37, pin 9. I added a flap "widget" and get "FLAPS OVERSPEED" now when I exceed 81 knots with the flaps not up. (Skyview Touch)


c37_p9={
valid=1
name=FLAPS
id=POSITION
alarm_type=OFF
range={
max_display=5
min_display=0
range1_valid=1
range1_top=5
range1_bot=2.5
range1_name=OFF
range1_color=YELLOW
range2_valid=1
range2_top=2.5
range2_bot=0
range2_name=ON
range2_color=BLACK
range3_valid=0
range3_top=20
range3_bot=10
range3_name=R3
range3_color=GREEN
range4_valid=0
range4_top=10
range4_bot=5
range4_name=R4
range4_color=YELLOW

Mitch
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  #7  
Old 03-15-2017, 06:08 PM
Mich48041 Mich48041 is offline
 
Join Date: Apr 2008
Location: Riley TWP MI
Posts: 2,512
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Quote:
It would be nice if the D-180 was smart enough to see added flap switch and marry it to >80 knots airspeed to give both visual and audible warnings.
Oh, but it is. Well maybe not as smart as the SkyView, but there is a workaround. Since there is a big red spar warning light on the instrument panel, the spar alarm on the D-180 is redundant. Re-purpose the D-180 Spar alarm to serve as Flap alarm. See page 6-18 of the FlightDEK-D180 Installation Guide for setting contact alarms. Purchase an airspeed switch and wire it in series with a flap position limit switch. The flap switch should be closed when the flaps are down and the airspeed switch should be closed at airspeeds above 82 knots. The airspeed switch can be calibrated using a homemade manometer. The switch should be adjusted to close when 4.4 inches of water pressure (82 knots) is applied to the high port. See THIS picture of my D-180 with "flap" displayed.
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Last edited by Mich48041 : 03-15-2017 at 06:10 PM.
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  #8  
Old 03-16-2017, 04:09 PM
RDupee RDupee is offline
 
Join Date: Apr 2012
Location: Mass USA
Posts: 13
Default

I have been flying with an RV12 Flap overspeed alarm for over a year now, and still occasionally forget to raise the flaps.
I am away In China now, and cannot attach a photo, but I will post details of my setup when I get home.
Note that you do not have to add a "FLAPS" widget, but for setup, it is useful to add one to the 100% EMS screen only.
The audio message "Flaps Overspeed" is already available in the RV12 Skyview software.
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1980 Evans VP1 completed, sold.
1995 Avid Speedwing completed sold.
RV-12 120259 First flight July 2014.
RV-10 kit started Feb 2017.
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  #9  
Old 03-16-2017, 07:26 PM
bernsbm bernsbm is offline
 
Join Date: Nov 2015
Location: Mequon, WI
Posts: 21
Default

Thanks everyone, exactly what I was looking for!
Barry
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  #10  
Old 03-24-2017, 01:37 AM
RDupee RDupee is offline
 
Join Date: Apr 2012
Location: Mass USA
Posts: 13
Default RV-12 Flap Over-speed Alarm

As promised before, here is some more info about my RV-12 installation
The Dynon SkyView gives an audible alarm (“Flaps Over-speed”) when the flaps are not fully up and the airspeed is over 82 knots.
A micro-switch is activated by the Flap Lever arm on the Aileron control bell-crank, which is below the pilots seat.
The micro-switch grounds EMS input “GP5” (in the manual as “Serial 5”).
This is connected to Pin 9 of the 37 pin connector on the EMS.
The operation of the switch can be checked by means of a “Flaps Widget” on the 100% size EMS screen.

Software changes from the standard SkyView version:

1. Setup Menu > EMS Setup > Sensor Input Mapping > Sensor Setup
EMS c37_p9 set to: POSITION POSITION FLAPS

2. Check that there is a line in the User Config dfg file:
“audio_sound_flaps_overspeed=SOUND_MODE_VOICE ”

3. Change Widget from “WIDGET_CONTACT” to “WIDGET_FLAPS”.

4. Setup Menu > HW Calibration > EMS Calibration> FLAPS Calibration
You can choose two calibration positions: Say 0 and 20 degrees


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Rich D

1980 Evans VP1 completed, sold.
1995 Avid Speedwing completed sold.
RV-12 120259 First flight July 2014.
RV-10 kit started Feb 2017.

Last edited by RDupee : 04-26-2017 at 06:50 PM. Reason: See posts on April 26
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