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  #1  
Old 01-03-2012, 10:43 PM
comfortcat's Avatar
comfortcat comfortcat is offline
 
Join Date: Jul 2005
Location: Southern California
Posts: 617
Talking Parking Brake...

OK!

Time for installing a parking brake.

Is Matco still the best choice? I'd like the dual valve. BTW: I'm going with the Bonoco brake lines if that makes a difference.


I see they have a straight value and a 90 degree valve.

Option? I have not bought the valve yet so I have options.

advTHANKSance

Dkb
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RV-9A - N18TD (reserved) - Fuselage.
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  #2  
Old 01-04-2012, 12:59 AM
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I think I got this one from Van's. I mounted it above where the normal lines would be on the firewall. This keeps it away from the rudder/brake pedals.



Used a scrap of the hat section for the tipup canopy release as a mounting bracket. This way I could stick some nutplates behind it and not have the bolts poke through the firewall. The plate on the side acts as a position limiter for the control arm and holds the control cable.



I used Bonaco lines. The ones coming up from the brake cylinders are shorter than normal, since they don't have to loop over the rudder pedal tubes.



Last step was to add a microswitch for a parking brake warning light.



Parking brake control is mounted below the panel on the side.

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RV-9A N5771H flown over 900 hours!
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  #3  
Old 01-04-2012, 08:36 AM
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Greg Arehart Greg Arehart is offline
 
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Bruce,

Nicely done!

greg
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  #4  
Old 01-04-2012, 11:27 AM
krw5927 krw5927 is offline
 
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Quote:
Originally Posted by Greg Arehart View Post
Bruce,

Nicely done!

greg
Agreed! I've always liked the idea of a parking brake on my 9A, but have had concerns about adding "parking brake released" to my pre-landing checklist. The microswitch idea is a winner!
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  #5  
Old 01-04-2012, 11:59 AM
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comfortcat comfortcat is offline
 
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Quote:
Originally Posted by krw5927 View Post
Agreed! I've always liked the idea of a parking brake on my 9A, but have had concerns about adding "parking brake released" to my pre-landing checklist. The microswitch idea is a winner!
There is a "Check Brakes" on all checklists. Wouldn't the brakes feel funny with parking brake valve closed?

Also, taxi at full throttle might be a hint too.
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  #6  
Old 01-04-2012, 04:36 PM
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bruceh bruceh is offline
 
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I can't take all of the credit on the microswitch.

I stole some of the ideas in my parking brake implementation from others on this forum.
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  #7  
Old 01-07-2012, 11:05 AM
krw5927 krw5927 is offline
 
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Quote:
Originally Posted by comfortcat View Post
There is a "Check Brakes" on all checklists. Wouldn't the brakes feel funny with parking brake valve closed?

Also, taxi at full throttle might be a hint too.
Startup checklist, yes. But I don't have "Check Brakes" on my PRE-LANDING checklist, as there's nothing for me to do if I check them and they go to the floor. I still have to land and I certainly can't service them from up there.
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  #8  
Old 01-07-2012, 06:00 PM
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jjconstant jjconstant is offline
 
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Beautiful Bruce. I would like to highlight that in your installation the arm down position is brakes off. I did mine the same way after a friend who mounted his the opposite way landed with his brakes on after vibration and gravity applied his parking brake for him, in flight

All Best

Jeremy
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  #9  
Old 01-07-2012, 06:37 PM
chaskuss chaskuss is offline
 
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Quote:
Originally Posted by bruceh View Post
snipped

Bruce,
Can you tell me where you purchased your parking brake control cable? Do you have a part number for it? I like yours better than mine.
Charlie
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  #10  
Old 01-07-2012, 08:34 PM
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bruceh bruceh is offline
 
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The cable is from ACS

A1840 T-Handle Button Lock Dash Control

Works great and has a very solid feel.
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RV-9A N5771H flown over 900 hours!
http://www.overthehills.com/RV-9A-Project
APRS Tracking for KJ6YRP and Flying Over the Hills Blog
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EAA Tech Counselor, Pre Buys, Build assistance - canopy/tanks/fiberglass/electrical/repairs
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