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  #1  
Old 04-19-2017, 08:44 AM
rapid_ascent rapid_ascent is offline
 
Join Date: Mar 2008
Location: Dublin, CA
Posts: 891
Default Parking Brake Valve Location

I know there is debate about the value of having a parking brake. That discussion is for another thread.

I'm starting to think about the best location for the valve. Some mount it on the firewall in the position of the flex to hardline. I like the idea of moving it up higher on the firewall as others have done to reduce the possibility of hitting the line with your feet, but then the tubing routing isn't as clean due to the diagonal firewall brace.

A third option would be to transition from flex to hardline in the standard location and then locate the valve somewhere between the firewall and the fuel selector valve. I like this idea since it seems the cleanest solution but the control cable would have to be routed further and that may be a complication.

I'm interested ideas and feedback from those who have gone down this path before. I'm sure there are other issues I may not have considered.

Thanks
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  #2  
Old 04-19-2017, 11:06 AM
219PB 219PB is offline
 
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Location: Victoria, Tx
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I just mounted mine in the standard position on the firewall. I have found that the further I deviate from the plans the time required goes up exponentially. I am enjoying the build but I am itching to go and fly.
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Last edited by 219PB : 04-19-2017 at 11:11 AM.
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  #3  
Old 04-19-2017, 12:34 PM
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jmjula jmjula is offline
 
Join Date: Oct 2005
Location: Portland, OR
Posts: 173
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I put the parking valve just underneath the upper horizontal longeron and ran hard lines down to the angle bracket Van's has you use to connect to the lines in the floor. I ran flex lines from the value to the peddles. This was a great location for the control cable too as I was able to use the panel rib above to support the cable. I did make sure to locate the hole for the prop cable before running the hard lines... I likely have pictures at home if you need it.
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  #4  
Old 04-19-2017, 01:44 PM
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N941WR N941WR is offline
 
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Location: SC
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Here is where mine is installed.

(Click to enlarge)
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RV-9 (Yes, it's a dragon tail)
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  #5  
Old 04-19-2017, 03:00 PM
VNS VNS is offline
 
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Location: New Zealand
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Alternative location for those with long arms


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  #6  
Old 04-19-2017, 03:06 PM
TS Flightlines TS Flightlines is offline
 
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Location: Ridgeland, SC
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Most that we have helped to plumb are located about where Bill has his.

Tom
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  #7  
Old 04-19-2017, 05:43 PM
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zilik zilik is offline
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Location: Pine Junction, CO
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Quote:
Originally Posted by VNS View Post
Alternative location for those with long arms


Now why did I not think of that location? The only drawback I see is making sure that it has not been bumped in flight and is ON while landing.
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  #8  
Old 04-19-2017, 06:16 PM
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N941WR N941WR is offline
 
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Location: SC
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Quote:
Originally Posted by N941WR View Post
Here is where mine is installed.

(Click to enlarge)
A better picture of my install. Click on the thumbnail to enlarge.


This shows how I used the cable casing as the travel stop so the lever arm cannot go over center. Also note how I used shrink tubing to keep the cable from slipping in the Adel clamp.
All screws that are difficult to reach are cap screws with plate nuts. They are much easier to remove for future maintenance than a pan head screw (Phillip's head) or a bolt and nut.

I have a T-Handle locking control cable that is mounted in the upper right hand corner of my panel. This where I tend to look when taking off and landing. The theory is that I won't do either with it pulled out and locked.
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RV-9 (Yes, it's a dragon tail)
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Build the plane you want, not the plane others want you to build!
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www.repucci.com/bill/baf.html
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  #9  
Old 04-20-2017, 09:25 AM
Alan Bumbaugh Alan Bumbaugh is offline
 
Join Date: Mar 2010
Location: Lubbock, Texas
Posts: 5
Default Parking Brake Valve location

Bill,

Did you use the stock length primary braided break lines? Any problems with kinking or interfering with pedal action? About how far down from the top angle?

Thanks,
Alan
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  #10  
Old 04-20-2017, 11:49 AM
goldbar goldbar is offline
 
Join Date: Apr 2010
Location: slc, UT
Posts: 29
Default mixture and prop

On my 7, I mounted the parking brake valve straight up above where the brake lines pass thru the firewall, I like to location, but be aware that is also in the same neighborhood that the mixture and prop controls go thru the firewall, at least for an IO engine. So depending on the firewall pass-thru method you will employ, the parking brake valve may or may not interfere with the placement of all.

I must agree that "that the further I deviate from the plans the time required goes up exponentially"
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