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Old 01-08-2022, 08:09 PM
jull_under jull_under is offline
Join Date: Nov 2015
Location: Orlando, FL
Posts: 26
Default Gust locks - RV-4

Hello Everyone-
Any ideas or suggestions for gust locks for all surfaces.
Must be portable.
Where can you buy something or has anyone home made these.

RV-4 Flying (X04)
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Old 01-08-2022, 09:28 PM
Taltruda Taltruda is offline
Join Date: Oct 2017
Location: Las Vegas, NV
Posts: 1,135
Default Gustlocks

Air Gizmos
Las Vegas
RV-4 flying…
RV-8 empenage finished 10-2020

Wings Started.. 11-2020
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Old 01-09-2022, 04:45 AM
Dan 57's Avatar
Dan 57 Dan 57 is offline
Join Date: Sep 2018
Location: LSZF
Posts: 963

I would not recommend the Air Gizmos ones.
Reasons? I used them for a season but was not happy with them: The straps are stiff, the tension is difficult to adjust, they are quite heavy, and didn't hold well. More than one morning I found the one installed tightly on the previous night lying in the grass.
I then bought the Antisplat product which is very good, but unfortunately not available for the -4.

I'm sure that using a search engine with words such as "gust lock aircraft RV VAF" will return many a thread and ideas on the subject...
- ain't the Destination, but the Journey -

RV-6.9 #25685, slider, O-360-A3A (carb/dual Lightspeed II), MTV-12-B, HB-YLL owner & lover
RV-4 #2062 HB-YVZ airframe builder
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Old 01-26-2022, 10:17 PM
FitzRX7 FitzRX7 is offline
Join Date: Jan 2013
Location: FL
Posts: 107

Tie down the plane and pull the tailwheel tight towards the rear, insuring the tailwheel can't pivot to unlock the rudder. Then use front or rear lap belt to hold the stick aft and support it left/right. Zero dollar gust locks!
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Old 01-27-2022, 11:03 AM
Jvon811's Avatar
Jvon811 Jvon811 is offline
Join Date: Mar 2014
Location: GA80 Whispering Pines Airpark
Posts: 234

I agree with Fitz. The seatbelt is the most simple solution for the ailerons and elevator. Even if you're thinking about sitting it outside during "OSH21, Wednesday Night" level weather, just make sure you're pointed into the prevailing wind. But the Rudder is never really safe in any gusty winds, even if the tailwheel springs/chains/steering link is holding it.

I've found Steve Melton's Rudder Gust Lock design to be the only thing I'd trust in Oshkosh level storms. Everything else really torques on the entire assembly a bit much, inducing stresses in directions the rudder horn and hinges really wasn't intended for. Especially tailwinds.

Here's Steve's idea.

RV-4 N249P
O-320, Dual P-Mags, Warnke Prop, Short legs, Manual Flaps, GRT Sport EX
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Old 01-27-2022, 11:11 AM
dmattmul dmattmul is offline
Join Date: Dec 2015
Location: Spring Hill, FL
Posts: 298
Default Steve’s gust locks +1

I’ve been using Steve’s gust locks for over a year on rudder, elevator and ailerons and found them quite good !!! Maybe a little expensive but so is the airframe.
RV-14A QB building, Lycoming 390 Thunderbolt arrived July 2019, Garmin avionics, Vertical Power, EFII-32 Ignition and Fuel, Whirlwind 300-72, EarthX batteries, Parts became a real airplane 8/15/2020.
Started RV-10 Nov 2020. Empennage arrived (Built) Working on QB kits. Garmin avionics, Vertical Power, EFII-32 Ignition and Fuel, Whirlwind 3 blade, EarthX batteries, real airplane hopefully early 2024. Paid subscriber and more. (Worth every dollar contributed).
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Old 01-28-2022, 09:00 AM
andoman andoman is offline
Join Date: Jul 2006
Location: Payson, AZ
Posts: 56

For the rudder I made a simple lock from scrap that pins the rudder horn to the rudder stop:
- I drilled a vertical hole in the rudder horn and the rudder stop.
- I placed two pins in a 7/8W X 4ishL X 1/8 thick plate at the distance to hold the rudder in trail.
I used no.4 screws for the pins and used nuts as spacers as required so the plate sits level and clears the vertical portion of the rudder horn angle.
"The plane won't build itself..." RV-7A N7.62MM sold
-RV4 purchased. Extensive refurbishment complete. “Takes off by it’s self, flys hands off, lands by it’s self...”
-HRII project: paint and panel to go!
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