Maximum rudder pedal deflection from center

Working up a bracket to mount Van's parking brake to the firewall in the same position as the stock -7A brake line-to-hose bracket, lower left on the firewall. I may have a clearance issue with my left rudder pedal. Since I don't have the rudder rigged up yet, I don't know whether this is a problem. How far forward from "straight down" should I expect the rudder pedals to swing once they're rigged? Ideally I want to use the "middle" position of the three rudder positioning holes, and maintain minimum of 1 inch of clearance between the pedal full-forward position and the cable that controls the parking brake. Currently, my pedal touches the adel clamp on my bracket after 4 inches of forward deflection.

If I can expect no more than 3 inches of forward pedal deflection once the rudder is rigged, then I think I can live with my bracket.

I remember mounting the valve higher to better align actuator linkage or control cable. So pedal interference wasn?t an issue.

Ryan,

How high off the bottom skin were you placing the valve. I can't really tell from the angle of your pic where its located. I'm still mulling over where I'm going to put mine.

Ray

Parking brake valve

I mounted mine basically a straight shot for the cable from the panel. I riveted a piece of angle to hold it. No interference to the weldment at all. It's Beringer. Maybe that makes a difference.

Ray, my goal is to re-use the existing rivet holes from the F-6122-1 bracket if at all possible so I don't have to significantly re-do the hard brake lines. So it's currently at that height. If the pedals are going to interfere though, I'll bite the bullet and move the bracket some, which is why knowing the maximum pedal travel is critical.

If memory serves, both my -4 and the -6 I just purchased have pedal travel of ~2" either side of center, measured at the cable attach point. The -6 pedals appear to be the same assy as the ones in my -7 project, but I can't verify that the pedal travel is the same in the -7.

Ryan, ok it just looked lower in your picture.

I?m thinking either there or move it up a little and closer to the center.

I have a 6A, but the firewall is from a 7A, so it should be the same. I put my brake valve exactly where the stock hose bracket is. I also moved my pedals as far forward as possible. The limiting factor for pedal placement was interference with the center tunnel cover / cabin heat cover. The brake valve was a non-issue.

Colin, your bracket looks a bit more compact than mine. i may want to re-think mine, which is admittedly based on another builder's creation.

Here's a better picture of my left pedal contact with the adel clamp when I deflect it just over 4 inches:



Anyway I sent this question off to the mothership. If anyone has the exact rudder pedal deflection, it would be them.

Curious - did you ever get an answer on rudder pedal throw? Would be handy for me to know now, too.

rsr3 said:

Curious - did you ever get an answer on rudder pedal throw? Would be handy for me to know now, too.

Click to expand...

I just measured my 6A with a 7 tail on it. Should be similar for most models.
Rudder cable moves total about 4" front to back when deflecting the rudder to each stop. So depending on where you set your pedal neutral position (most tilt the pedal slightly aft), you need about 2" distance for forward swing.

rsr3 said:

Curious - did you ever get an answer on rudder pedal throw? Would be handy for me to know now, too.

Click to expand...

One thing to watch for is that the rudder pedals can be placed in 3 different mounting locations on the longerons to suit different heights of people. So be careful when placing things behind the pedals. Personally I kept things above the pedals because I mounted them in the location closest to the firewall so there is little room behind them at full travel.

RV7 To Go said:

One thing to watch for is that the rudder pedals can be placed in 3 different mounting locations on the longerons to suit different heights of people. So be careful when placing things behind the pedals. Personally I kept things above the pedals because I mounted them in the location closest to the firewall so there is little room behind them at full travel.

Click to expand...

This is important. I just rigged mine. If the full aft position is used, the rudder cable eyelet hits the grommet. Where the cable goes into the eyelet, that edge on the eyelet can hit the grommet at full deflection. Turns out it wasn't an ideal position for me, but worth noting for pilots with a short inseam. I ended up in the middle position and they move like butter.

Thank you chaps - I am fully forwards (being somewhat lanky) so my concern was pedal / brake contact with the firewall. But 4” throw should work fine, and I also intend to incline the pedals slightly back.

Cheers

Rob