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  #41  
Old 02-28-2018, 05:23 PM
Ivan Kristensen's Avatar
Ivan Kristensen Ivan Kristensen is offline
 
Join Date: Mar 2008
Location: Guelph Ontario
Posts: 211
Default Static wicks.

Quote:
Originally Posted by Weasel View Post
Having flown our RV-10 and previous RV-4 through lots of IFR over the years I have the following personal experiences.

In the RV-4 once while navigating under cumulous clouds around heavy rain, I started feeling the hair on my neck stand up towards the canopy. When moving my arm around the cockpit I noticed the hair on my arm standing strait out toward the canopy. I really don't care to have my muscles artificially stimulated by static electricity so I did not experiment with touching things to find the voltage differential.

Several times again in the RV-4 when flying through snow for a while, had the same experience.

In the RV-10 the only time I thought maybe there was evidence of static electricity, Had been flying in light rain and clouds IFR for about 1.5-2 hrs solid, near the end of the flight I became aware of a noise that had been periodically happening I am guessing every 8-15 minuets. The sound was a snap like you hear when a plastic water bottle collapses when changing altitude. The part that caught my attention was the last time I heard it right near the end of that flight, at the same time of the "snap" from the corner of my peripheral vision I saw what appeared to be a spark jump from the steel bar that connects the dash to the fiberglass cabin top. The spark basically appeared to jump between the bar and the windscreen. I wanted to see it again for confirmation but was on the approach to landing and slowing down.


I did not observe any adverse effects on the navigation or communication radios.

Based on this, I don't think static wicks are necessary at normal RV- speeds.
Weasel,
Your last statement seems to be at odds with your description of what happen. Static wicks might have prevented it??
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Guelph, ON. Canada
RV-10 (C-GMDV)
1140 hours.


Link to my build site:
https://ivankristensen.smugmug.com/B...ENTAL-aircraft
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  #42  
Old 03-01-2018, 05:46 AM
Weasel's Avatar
Weasel Weasel is offline
 
Join Date: Dec 2012
Location: Brooksville, MS
Posts: 717
Default

Quote:
Originally Posted by Ivan Kristensen View Post
Weasel,
Your last statement seems to be at odds with your description of what happen. Static wicks might have prevented it??
I see no reason to add/carry around additional hardware and equipment to prevent something that has not been proven to be a flight safty issue. Especially given so many rvs flying around and hardly anyone reporting static discharge issues.
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Weasel
RV-4 715hr Sold
RV-10 "School Bus" - +1400hr counting
Fisher Classic Cassler Power VW sold
RV-10 N7631T 820hr Sold
RV-8 700+hrs
Carbon Cub 200 hr Sold
One-Off Super Cub 90 hr
SERFI AWARDS

http://weaselrv10.blogspot.com/
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  #43  
Old 03-01-2018, 07:05 AM
MauleDriver's Avatar
MauleDriver MauleDriver is offline
 
Join Date: Aug 2006
Location: Lake Ridge Aero Park - Durham NC
Posts: 166
Default

Quote:
Originally Posted by Ivan Kristensen View Post
Weasel,
Your last statement seems to be at odds with your description of what happen. Static wicks might have prevented it??
Quote:
Originally Posted by Weasel View Post
I see no reason to add/carry around additional hardware and equipment to prevent something that has not been proven to be a flight safty issue. Especially given so many rvs flying around and hardly anyone reporting static discharge issues.
My single experience with what I think was static caused me to lose a comm radio but I've come to the same somewhat contradictory conclusion (for my personal flying in my personal airplane).

With that said, I think I better understand why they are included on some/many certified aircraft.
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  #44  
Old 03-01-2018, 08:02 AM
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BrianDC BrianDC is online now
 
Join Date: Mar 2016
Location: Northern VA
Posts: 106
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I thought in another thread there was some discussion about P-static and how different paints or surface treatments may contribute or eliminate P-static and it's effects.

Talking to a few -10 pilots it sounds like there are some instances where they have had radio issues due to possible p-static, while others have never had any issues. Due to the experimental nature and numerous differences in how we assemble these aircraft, you won't know if you will be impacted until you do some testing.

Personally I was initially thinking of putting in wick mounts (following mouser) however I decided that while that I really wasn't sure they were needed (or if I really wanted to fly a lot of hard IFR). I figured that if needed I could always add those to my system down the road if I found the need.

As to why some certified planes need static wicks, I would guess it's because their testing and analysis showed that with their design, paint, and avionics that there was a need for additional p-static mitigation and the use of static wicks was the best (or quickest) solution.
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  #45  
Old 05-20-2018, 07:10 PM
AV8ER AV8ER is offline
 
Join Date: Dec 2017
Location: Orlando, Florida
Posts: 7
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Finished the VOR antenna and conduit install. I ran conduit for the VOR antenna as well as a second conduit for a forward facing camera I plan on installing in the VS fiberglass tip. The conduit for the VOR antenna must be flat at the top of the mounting point as the antenna "puck" sits flat on top of whatever it is mounted in. The cable and connector will have to slide back down into the conduit once they are installed then the puck will be screwed down onto the top rib.

Also after attending Sun 'N Fun this year again I saw ZERO RVs with static wicks. I did see a bunch with VOR/LOC/GS antennas though both mounted on the bottom of the fuse and the top of the VS.

Completed install:
http://timsrv10.com/build-log/vor-an...ting-complete/

Doubler:
http://timsrv10.com/build-log/vor-an...ks-help-bryan/

Conduit:
http://timsrv10.com/build-log/vs-ske...nduit-install/
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RV-10 VS and Rudder Done. HS on the bench.
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