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02-18-2016, 06:15 AM
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Join Date: Feb 2005
Location: Chesterfield, Missouri
Posts: 4,514
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Quote:
Originally Posted by chrispratt
When I built my -8, I spent a lot of time figuring out how to design and mount a flap sensor mechanism. I used the Ray Allen sensor and some RC mounting hardware. It works fine after 10 years. But after all that work, I flew the airplane and realized it's easier to look over your shoulder and visually check the position. I've yet to ever reference the flap indicator on my panel. So give it some thought as to whether it's worth the effort. (The RV-14 might have a different sight line, but I doubt it's that much different.)
Chris
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My feelings exactly Chris.
It is so intuitive to be looking around outside and a quick glance at the flap fits right in. I have markers at 10-20-40.
__________________
RV-12 Build Helper
RV-7A...Sold #70374
The RV-8...Sold #83261
I'm in, dues paid 2019 This place is worth it!
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02-18-2016, 01:01 PM
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Join Date: Mar 2009
Location: Plano, TX
Posts: 2,089
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Here is the easiest way to go for flap position. A good old string pot. Except rather than $200-300 for a fancy industrial one, here is a pre-made kit version for $40.
http://www.andymark.com/product-p/am-2674.htm
__________________
Colin P.
RV-6A #20603
Complete 5/10/19
PP SEL / A&P
I donate every year on my B-Day (in Dec), but donated early in Sep'19.
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02-18-2016, 09:16 PM
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Join Date: Aug 2007
Location: northern Cal
Posts: 111
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Flap position
I'm interested in a flap position indicator also.
The last biannual I took the instructor was upset because I looked to see were the flaps were. First time he had ever been in a RV. I noticed other RVers check visually also.
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02-18-2016, 09:18 PM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,145
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Quote:
Originally Posted by vgb
I'm interested in a flap position indicator also.
The last biannual I took the instructor was upset because I looked to see were the flaps were. First time he had ever been in a RV. I noticed other RVers check visually also.
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What indicator would he prefer versus a visual confirmation? This is ridiculous, that instructor would have been fired on the spot if it had been me. Maybe I'm just too old and cranky and don't put up with stupidity though...
Sorry - drifting off topic - visual confirmation is plenty good for me, I haven't found the need for an indicator yet. I can look at the wing just as fast as I can look at the indicator, and the wing is already installed.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
Last edited by airguy : 02-18-2016 at 09:24 PM.
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02-19-2016, 06:30 AM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
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The only time the visual indicator (looking out the window) doesn't work so good is at night.
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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02-22-2016, 04:00 AM
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Join Date: Jan 2007
Location: LI, NY
Posts: 409
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I agree with Walt
The first time I flew at night I looked out the side to see the flaps and couldn't beleive that I could not see the flaps at all. Another reason for flap indicator for me, is that I've hooked it into my dynon. Now my girl yells at me if I over speed or forget the flaps. I like have that.
__________________
Richard Fazio
LI, NY
N966RV
RV-6 Slider
O-360
FP Wood Prop
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02-22-2016, 10:03 AM
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Join Date: Jun 2009
Location: Mesa, AZ
Posts: 242
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VP-X Flap Position integration with EFIS
Quote:
Originally Posted by f14av8r
I think looking at the flaps is pretty easy too but the Vertical Power system has some pretty cool functions if you provide it with a position sensor input. I've ordered the Vans RV-14 kit and am going to install it on my -4 in a few weeks. We'll see . . .
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Had to fight with conflicting documentation and two vendors to resolve the issues but I chose the VP-X Flap Positioning (control) but integrated with the Sky View EFIS for position display using a screen widget.
Once solved any solution is a good one. The VP-X/EFIS installation was quite uncomplicated (in hindsight). Nothing in a flap positioning system precludes painting 'witness marks' on the flaps and visually confirming the action (in daylight). Whether using Ray Allen POS-12, Colin's string potentiometer recommendation, or the button magnet, the objective is the same, to consistently move the flaps to a known position for aeronautical benefit. The rest is icing on the cake.
__________________
gary
RV-6A QB Tip-Up, 1st Flight 3/18/17 
O-360-J2A (modified & F/I), Sensenich FP (cruise)
VP-X Sport, Dynon SkyView, VFR day
(FFZ) Mesa, AZ - N234GB -
www.mykitlog.com/garyc
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