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Parking Brake

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bobbyhester(at)charter.ne
Guest

Posted: Mon Dec 18, 2006 7:28 pm Post subject: Parking Brake

Hope these help!



jim-bean(at)att.net wrote:



 	  Quote: 	
		  



All,

I installed the catalog parking brake valve on my RV-8 but never figured

out how to use it. At first I thought that I could use the little handle

by itself. Unfortunately this dream resulted in an almost serious

accident when the tiny mass of the tiny handle caused it to jiggle into

the closed position. When this happens the next brake application locks

the brake. Surprise! At the moment the handle is tie-wrapped into the

open position.

My post is to ask how others have fabricated a linkage to operate it

properly. Simply putting a control cable on it results in reversed

operation, IE pulled out would be off. Any ideas?

Jim Bean

43 hours now on N99JA

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gyoung

Joined: 09 Jan 2006
Posts: 211
Location: Republic of Texas

Posted: Mon Dec 18, 2006 8:45 pm Post subject: Parking Brake

The valve operates by trapping the fluid after you apply the brakes. Apply

brakes, close valve and fluid and pressure stay put assuming no leaks.

Position the cable so pulling it closes the valve. Use a ratcheting or

locking cable so it will stay in either the open or closed position.



Regards,

Greg Young - Houston (DWH)

RV-6 N6GY - project Phoenix

Navion N5221K - just an XXL RV-6A

Regards,

Greg Young

 



[quote] --

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phil(at)petrasoft.net
Guest

Posted: Tue Dec 19, 2006 12:19 pm Post subject: Parking Brake

You can also set the valve to the closed position and then apply the 

brakes.  It is basically a check valve with a small cam to push the ball 

off of the seat for normal operation.  This is why it just rotates 

around in a circle.



I fly to West Texas quite a bit and it's sure nice to have that parking 

brake when you're trying to fuel up in a 35 knot wind.  It's a good 

thing it was blowing right down the runway.  I got home fast though.  



I also installed a spring in case the cable were to "come from 

together," as a Cajun friend of mine once said. 



Here is a picture of my installation.  The position of the arm is open 

and it now has a spring holding it in that position and a cable that 

pulls it toward the camera about 90 deg.  Like Greg suggested I used one 

of those small cables with the locking push button in the middle.



http://www.myrv7.com/viewimage.php?pictureid=328



Godspeed,



Phil Birkelbach - Houston Texas

RV-7 N727WB

http://www.myrv7.com



Greg Young wrote:

[quote] 



 The valve operates by trapping the fluid after you apply the brakes. Apply

 brakes, close valve and fluid and pressure stay put assuming no leaks.

 Position the cable so pulling it closes the valve. Use a ratcheting or

 locking cable so it will stay in either the open or closed position.



 Regards,

 Greg Young - Houston (DWH)

 RV-6 N6GY - project Phoenix

 Navion N5221K - just an XXL RV-6A

 Regards,

 Greg Young

  



   

> --

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