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  #11  
Old 04-06-2021, 05:58 AM
craig.roser's Avatar
craig.roser craig.roser is offline
 
Join Date: Feb 2019
Location: BRADENTON
Posts: 20
Default

Do you have pictures of the springs?
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2015 Gunter Malich RV8
2005 Cessna C182T G1000
West Central Florida
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  #12  
Old 04-06-2021, 07:24 AM
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Jpm757 Jpm757 is offline
 
Join Date: May 2013
Location: Sherman, CT
Posts: 940
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Craig,
I will snap a pic next time I'm over at the hangar. The installation is simple, you can shop the spring dept. at your local hardware store. All you need are a pair of light duty springs with the right pull and length, attach them to the back of the rudder pedals opposite to where the rudder cables attach. Attach other end to the firewall stiffener angle with a #40 hole. If you need right rudder in cruise, then adjust the right spring slightly tighter than the left. Usually takes a little trial and error until you get the differential tension required to center the ball.
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RV6 #20477 completed 1991 sold.
RV7 #72018 N767T first flight 11/21/2017
(KOXC)Oxford, CT, (0NY0)North Creek, NY.
1941 J3 Cub skis, floats.
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  #13  
Old 04-06-2021, 06:33 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
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Default Rudder trim

Quote:
Originally Posted by g zero View Post
Simple Solution....
Brilliant trim tab. Filing that one for someday when my bird is flying.
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Donated 01/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
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Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #14  
Old 04-06-2021, 08:23 PM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
Posts: 3,940
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A 1/2 ball off can be as simple as the pedal mount blocks causing too much drag on the tubing.
Reach down and pull the pedal towards you, it should be easy to swing with very little drag.
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  #15  
Old 04-07-2021, 10:54 AM
wnplt wnplt is offline
 
Join Date: Feb 2013
Location: Idaho
Posts: 211
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I have this and it works great

https://www.aerosportproducts.com/product/rudder-trim/
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  #16  
Old 04-15-2021, 09:13 AM
Taltruda Taltruda is offline
 
Join Date: Oct 2017
Location: Las Vegas, NV
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Quote:
Originally Posted by wnplt View Post
I don't believe this works on the -8..
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  #17  
Old 04-15-2021, 09:21 AM
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craig.roser craig.roser is offline
 
Join Date: Feb 2019
Location: BRADENTON
Posts: 20
Default From half ball right to half ball left to ball centered

I didn't build my plane but I have made my first custom plane part! It started with a simple AutoCAD drawing that I printed true scale and taped to sheet aluminum. Easy enough to cut out the part with shears and file the perimeter smooth. Mounted behind the stern light with the stern light screws. First flight perfect guess from a half ball right to a half ball left since I wanted to extrapolate to center. First trim got me to a half ball left. Final trim got me to almost perfect. Just a smidge off center.












. . . . g zero gets credit for sharing the design!
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2015 Gunter Malich RV8
2005 Cessna C182T G1000
West Central Florida
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  #18  
Old 04-15-2021, 09:22 AM
Jeff1smith Jeff1smith is offline
 
Join Date: Mar 2020
Location: Port Angeles
Posts: 26
Default Rudder trim

I too had the half ball issue. Started with a piece of balsa wood that I cut with a band saw to a wedge. 3 1/2 in long and 1/2” thick. After looking at it, I just couldn’t glue a piece of wood on the tail. Also looking for a more elegant solution.
Found it at Vans. They sell a metal rudder trim tab for the RV12 for $7.
Asked Vas tech support your thoughts and they approved, so that’s what I did. Looks great and I actually had to take a bit of the delivered angle out, because now I had left ball.
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  #19  
Old 04-15-2021, 01:13 PM
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Mel Mel is offline
 
Join Date: Mar 2005
Location: Dallas area
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Quote:
Originally Posted by craig.roser View Post
I didn't build my plane but I have made my first custom plane part! It started with a simple AutoCAD drawing that I printed true scale and taped to sheet aluminum. Easy enough to cut out the part with shears and file the perimeter smooth. Mounted behind the stern light with the stern light screws. First flight perfect guess from a half ball right to a half ball left since I wanted to extrapolate to center. First trim got me to a half ball left. Final trim got me to almost perfect. Just a smidge off center.
. . . . g zero gets credit for sharing the design!
Unfortunately this blocks off the view to the left of your light, making night flight not in conformance with FARs.
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  #20  
Old 04-16-2021, 04:53 AM
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craig.roser craig.roser is offline
 
Join Date: Feb 2019
Location: BRADENTON
Posts: 20
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Quote:
Originally Posted by Mel View Post
Unfortunately this blocks off the view to the left of your light, making night flight not in conformance with FARs.
Methinks I am legal, viewable within the 70 degrees side to side required for a stern light:





There is actually a shield on the stern light itself that blocks the view from the side.
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2015 Gunter Malich RV8
2005 Cessna C182T G1000
West Central Florida

Last edited by craig.roser : 04-16-2021 at 04:55 AM.
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