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Parking brake

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woxofswa

Joined: 12 Aug 2008
Posts: 349
Location: AZ

Posted: Fri Feb 06, 2009 2:31 pm Post subject: Parking brake

I would appreciate the brain trust opinion on parking brake installation.

I have one in my Socata and find it very useful.  Are there downsides other than cost and more seals to leak?



Are the Van's valve and install kit the way most are doing it or are there alternatives?



Thanks in advance.

_________________
Myron Nelson
Mesa, AZ
Flew May 10 2014

jeff(at)westcottpress.com
Guest

Posted: Fri Feb 06, 2009 4:54 pm Post subject: Parking brake

Hi Myron,



It's pretty easy to roll your own bracket for mounting.  I made mine  

from 3/4" angle and Nick Gautier gave me a duplicate of his plate  

design that you see between the bracket and valve in the picture  

attached that will hold the adel clamp for the vernier cable and  

forms the stop for the arm on the valve.  The valve, straight  

fittings and other odds and ends shouldn't reach $200.00... and you  

can get it all from Spruce.





Jeff Carpenter

40304

N410CF

Progress suddenly slowed by the economy

(all kinds of time, but no money for the panel)



you have the same number of connections to make

On Feb 6, 2009, at 2:31 PM, woxofswa wrote:



 	  Quote: 	
		   



 I would appreciate the brain trust opinion on parking brake  

 installation.

 I have one in my Socata and find it very useful.  Are there  

 downsides other than cost and more seals to leak?



 Are the Van's valve and install kit the way most are doing it or  

 are there alternatives?



 Thanks in advance.



 --------

 Myron Nelson

 Mesa, AZ

 Emp completed, legacy build fuse in progress





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 28974#228974




	




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Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Fri Feb 06, 2009 6:56 pm Post subject: Parking brake

Myron, I think the parking brake is a 'no-brainer'. I assume that Van's 

is selling the Matco unit. The installation is straight forward, as far 

as seals go, The unit is fairly simple and easily serviced. I doubt that 

you will have a leak in the airplanes useful life. Do it! (its only money!)



Deems Davis # 406

'Its all done....Its just not put together'

http://deemsrv10.com/

kdbelue(at)charter.net
Guest

Posted: Fri Feb 06, 2009 7:27 pm Post subject: Parking brake

I installed the Matco parking brake in my RV10 and it didn't leak  

until I started using my brakes for engine runup. Then it started  

leaking out of the valve (not the fittings), so I removed it.



Kevin Belue



Sent from my iPhone



On Feb 6, 2009, at 8:55 PM, Deems Davis <deemsdavis(at)cox.net> wrote:



 	  Quote: 	
		   



 Myron, I think the parking brake is a 'no-brainer'. I assume that  

 Van's is selling the Matco unit. The installation is straight  

 forward, as far as seals go, The unit is fairly simple and easily  

 serviced. I doubt that you will have a leak in the airplanes useful  

 life. Do it! (its only money!)



 Deems Davis # 406

 'Its all done....Its just not put together'

 http://deemsrv10.com/

Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Fri Feb 06, 2009 7:51 pm Post subject: Parking brake

Wow, That's news, I wonder if others have also had the same problem? 

Looking at the parts diagram it looks like you should be able to replace 

the 3 O-rings fairly 

easily.http://matco.veracart.com/pdf/mastercylinder23a.pdf

I wonder if you could get the Vitron O-rings this size?



Deems

Kevin Belue wrote:

 	  Quote: 	
		   



 I installed the Matco parking brake in my RV10 and it didn't leak 

 until I started using my brakes for engine runup. Then it started 

 leaking out of the valve (not the fittings), so I removed it.

kdbelue(at)charter.net
Guest

Posted: Fri Feb 06, 2009 8:44 pm Post subject: Parking brake

Yes, I was thinking it would be easy to repair, but after the pain of  

getting to it and removing it, I decided to not go through that again  

and left it out. It is really in a difficult place to access once  

everything is finished. I mounted mine the same as most of you did- in  

place of the bracket that holds the brake lines to the firewall. I  

hope you guys have better luck than I did.

Kevin Belue

Sent from my iPhone

On Feb 6, 2009, at 9:49 PM, Deems Davis <deemsdavis(at)cox.net> wrote:

 	  Quote: 	

 Wow, That's news, I wonder if others have also had the same problem?  

 Looking at the parts diagram it looks like you should be able to  

 replace the 3 O-rings fairly easily.http://matco.veracart.com/pdf/ 

 mastercylinder23a.pdf

 I wonder if you could get the Vitron O-rings this size?

 Deems

 Kevin Belue wrote:

> 

>

> I installed the Matco parking brake in my RV10 and it didn't leak  

> until I started using my brakes for engine runup. Then it started  

> leaking out of the valve (not the fittings), so I removed it.

>

pascal(at)rv10builder.net
Guest

Posted: Fri Feb 06, 2009 9:05 pm Post subject: Parking brake

I would let Matco know of this. I think they would make it right based on my 

experience with them thus far. Also if there is an issue, which I can't 

figure out why the valve would fail so soon then they need to be aware of 

it. Since yours is out already no harm calling Matco explaining the issue 

and seeing if they will RMA and fix for you and figure out why the valves 

are leaking.

P

--------------------------------------------------

From: "Deems Davis" <deemsdavis(at)cox.net>

Sent: Friday, February 06, 2009 7:49 PM

To: <rv10-list(at)matronics.com>

Subject: Re: Parking brake

 	  Quote: 	

 Wow, That's news, I wonder if others have also had the same problem? 

 Looking at the parts diagram it looks like you should be able to replace 

 the 3 O-rings fairly 

 easily.http://matco.veracart.com/pdf/mastercylinder23a.pdf

 I wonder if you could get the Vitron O-rings this size?

 Deems

 Kevin Belue wrote:

> 

>

> I installed the Matco parking brake in my RV10 and it didn't leak until I 

> started using my brakes for engine runup. Then it started leaking out of 

> the valve (not the fittings), so I removed it.

>

rv(at)thelefflers.com
Guest

Posted: Sat Feb 07, 2009 3:54 am Post subject: Parking brake

Did you have the PVPV-1 or PVPV-D?   



I just ordered a PV-2 yesterday from Van's, which I believe is the PVPV-D.



Just curious.....



Bob

--

speckter(at)comcast.net
Guest

Posted: Sat Feb 07, 2009 5:48 am Post subject: Parking brake

Another leak issue is when you set the break and it is cool, go away and the

weather warms, it will blow out the seal in the wheel because there is no

place for the expanded fluid to go.  This happened with solid lines, so if

you have flexible ones you might be OK.  Someone with too much time on there

hands could calculate the expansion volume and let us know.



Gary Specketer



--

Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Sat Feb 07, 2009 7:44 am Post subject: Parking brake

I don't think any parking brake will stand up to that abuse. IMHO, a 

parking brake is to hold the aircraft just long enough for you to place 

chocks, or to hold it during runup so you don't inadvertently let it 

creep while running checklist. Holding pressure on the system for hours 

or days is just asking for a leak or failed O-ring.



gary wrote:

[quote] 



 Another leak issue is when you set the break and it is cool, go away and the

 weather warms, it will blow out the seal in the wheel because there is no

 place for the expanded fluid to go.  This happened with solid lines, so if

 you have flexible ones you might be OK.  Someone with too much time on there

 hands could calculate the expansion volume and let us know.



 Gary Specketer



 --

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

pascal(at)rv10builder.net
Guest

Posted: Sat Feb 07, 2009 8:27 am Post subject: Parking brake

The word "parking brake" is deceiving. It is not meant to be left on all the 

time when "parked". It is for temporary use. set to hold plane in place 

while a long term solution (chocks, etc) is completed. The parking brake is 

than released before leaving.

Pascal



--------------------------------------------------

From: "gary" <speckter(at)comcast.net>

Sent: Saturday, February 07, 2009 5:42 AM

To: <rv10-list(at)matronics.com>

Subject: RE: Parking brake



[quote] 



 Another leak issue is when you set the break and it is cool, go away and 

 the

 weather warms, it will blow out the seal in the wheel because there is no

 place for the expanded fluid to go.  This happened with solid lines, so if

 you have flexible ones you might be OK.  Someone with too much time on 

 there

 hands could calculate the expansion volume and let us know.



 Gary Specketer



 --

kdbelue(at)charter.net
Guest

Posted: Sun Feb 08, 2009 9:51 am Post subject: Parking brake

The problem I had with the parking brake valve is where it is, not how  

it is mounted. It is really difficult to bend up under the panel to  

remove or install it after everything is finished. I even took the  

seat out. I decided it was not worth the effort to put it back. I  

haven't had a need for it anyway.



Kevin Belue



Sent from my iPhone



On Feb 7, 2009, at 5:59 AM, "Bob Leffler" <rv(at)thelefflers.com> wrote:



[quote] 



 Did you have the PVPV-1 or PVPV-D?



 I just ordered a PV-2 yesterday from Van's, which I believe is the  

 PVPV-D.



 Just curious.....



 Bob

 --

Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Sun Feb 08, 2009 3:45 pm Post subject: Re: Parking brake

" no 

place for the expanded fluid to go. This happened with solid lines, so if 

you have flexible ones you might be OK. Someone with too much time on there 

hands could calculate the expansion volume and let us know. "



Actually, this is backwards. When it gets hot, the fluid expands, but the aluminum lines and brake cylinders expand even more! So theoretically you might have a problem going hot to cold. Which is exactly what happens if you set the brake after landing - some of the brake heat will make its way to the brake cylinders, and later they will cool down.

_________________
Bob Turner
RV-10 QB

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