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  #1  
Old 02-28-2017, 07:21 PM
Champ's Avatar
Champ Champ is offline
 
Join Date: Apr 2012
Location: Kingsville, Ontario, Canada
Posts: 131
Default Front Rudder Pedals

I decided to go with ground adjustable rudder pedals way back mostly because I thought they were a more robust assembly. Inflight adjustable seemed kind of wobbly. Now that I'm in Phase 1 I'm second guessing that decision. My son who will fly occasionally is a few inches taller than me and needs the pedals farther forward. Ground adjusting will be a bit of a pain and adding a back cushion pushes me to close to the stick.

I did put in the aft nut plates for the centre bar for the inflights as a just in case before the floor was closed up. A big problem though is that the ground adjustable attach angles F-8108 are where the F-874 slide blocks for the inflights would run and would probably have to be removed.

1. Anyone ever converted from ground to inflight adjustable?
2. Was I incorrect in the wobbly assessment of the inflights?
3. Any way to make ground adjustment easier?
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Dennis Enns
Kingsville, ON
Bellanca Champ 7ACA since 1986, restored 1990.
RV-8 IO375, Hartzell CS, dual PMags.
In Phase 1
Dues paid thru Dec 22, 2017
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  #2  
Old 03-01-2017, 05:15 AM
Robert Anglin Robert Anglin is offline
 
Join Date: Mar 2008
Location: houston, texas
Posts: 561
Default

Quote:
Originally Posted by Champ View Post
I decided to go with ground adjustable rudder pedals way back mostly because I thought they were a more robust assembly. Inflight adjustable seemed kind of wobbly. Now that I'm in Phase 1 I'm second guessing that decision. My son who will fly occasionally is a few inches taller than me and needs the pedals farther forward. Ground adjusting will be a bit of a pain and adding a back cushion pushes me to close to the stick.

I did put in the aft nut plates for the centre bar for the inflights as a just in case before the floor was closed up. A big problem though is that the ground adjustable attach angles F-8108 are where the F-874 slide blocks for the inflights would run and would probably have to be removed.

1. Anyone ever converted from ground to inflight adjustable?
2. Was I incorrect in the wobbly assessment of the inflights?
3. Any way to make ground adjustment easier?
We have the in air adjustable set-up so I can not tell you what it takes to change over to that. I can tell you it is worth it if you can get it done and there is no problem with wobbly peddles for the in flight adjustable system.
Most of the time my feet are off the peddles and on the floor. Only when at very low speeds with high power or maneuvering do I place them on the peddles. The adverse yaw is very slight with the RV-8. Just after round-out and touch-down, I bring my toes up to the top of the peddles for breaking once I know I will not be going around. You really don't feel any wobble are movement as your feet are working the peddles and has a lot more travel than the slight movement of the peddles mounted on the slide tube.
You can move them for servicing and if you wish on long CX flights you can push them away so you can stretch your legs from time to time and yes if you have more than one guy going to fly that ship, it is nice to just pull the "T" handle and adjust them to your liking.
I would have to vote, yes it is worth it.
Hope this helps, Yours, R.E.A. III #80888
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  #3  
Old 03-01-2017, 09:33 AM
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Ron RV8 Ron RV8 is offline
 
Join Date: Nov 2010
Location: Okanagan Valley BC, Canada
Posts: 402
Default

I have in-flight adjustable pedals and have never detected any wobble... I can't speak to ease of conversion...
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Okanagan Valley BC, Canada
RV-8 Completed Dec 2013

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  #4  
Old 03-23-2017, 03:23 PM
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Danny King Danny King is offline
 
Join Date: Dec 2004
Location: Southlake, Texas
Posts: 518
Default Converting the Rudder pedals

There is nothing easy about moving ground adjustable pedals! Air adjustable pedals are rock solid!

I helped a new RV-8 partnership convert their 8 from ground adjustable to flight adjustable. It is not difficult. One partner is over 6 feet and the other about 5' 10". If your 8 is a quick build, the mounting holes and nut-plates are already installed. For easy access, remove the forward cargo floor. If the aircraft is a taildragger, this job is easier if the tailwheel is raised to level the fuselage, i.e. Tailmate.

Unbolt the master cylinders and leave them there, safety-wired out of the way. Disconnect the rudder cables. Remove the exsiting pedal assembly.
IMPORTANT......Remove your old pedals and drill off, unbolt, or otherwise de-attach any pedal extensions added during the build and discard them! Attach the pedals to the adjustable assembly.

Drill the old mounting tracks off. Use aluminum tape to cover the holes and to provide a slick track for the new pedals nylon sliders to slide on. Bolt the new pedal assembly to the firewall, and mount the rear cap mount to the floor with #3 bolts into the existing plate-nuts. Attach the master cylinders to the new pedals, and reattach the rudder cables.

Enjoy your more adjustable RV-8. I move my pedals one notch closer or further depending on my shoes, or if I'm wearing a jacket, or just my preference at the time.
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Beautiful Doll 80434 TT 1525 hours
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Last edited by Danny King : 03-23-2017 at 04:03 PM.
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  #5  
Old 03-23-2017, 08:09 PM
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fl-mike fl-mike is offline
 
Join Date: Jul 2005
Posts: 809
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Quote:
Originally Posted by Danny King View Post
IMPORTANT......Remove your old pedals and drill off, unbolt, or otherwise de-attach any pedal extensions added during the build and discard them! Attach the pedals to the adjustable assembly.
Danny,
Why is this important?
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Venice, FL
RV-6A. Mattituck TMX O-360, FP, GRT Sport EFIS
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N184WM reserved (RV-8)....tail kit done, slow-build wing done, slow-build fuselage started.
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  #6  
Old Yesterday, 03:06 PM
Champ's Avatar
Champ Champ is offline
 
Join Date: Apr 2012
Location: Kingsville, Ontario, Canada
Posts: 131
Default

I will probably eventually switch to in flight adj rudder pedals but will stay with the grd adg until the pain becomes to great.

Looking at what's involved I thought I could leave the grd adg tracks in place and put a UHMW strip on top of the horizontal leg with recesses for the track rivet heads, using double sided tape. The in flight slides could ride on top of this. This would raise the rudder pedals around 1/4".

Danny - I'm travelling now so can't check the drawings. When drilling out the track rivets don't the remnants drop inside the sealed space under the 8's fwd floor?
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Dennis Enns
Kingsville, ON
Bellanca Champ 7ACA since 1986, restored 1990.
RV-8 IO375, Hartzell CS, dual PMags.
In Phase 1
Dues paid thru Dec 22, 2017
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