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recommended RV brake fluid

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bmeyette

Joined: 14 Mar 2007
Posts: 72
Location: Cornish, NH

Posted: Thu Aug 27, 2009 6:54 pm Post subject: recommended RV brake fluid

my RV-7A construction manual says I must not use  automotive brake, but instead "use only the aircraft brake fluid recommended by  the manufacturer".  But they don't say what this fluid is.   Does  anyone know what fluids are recommended for use with the standard Van's  Cleveland disk brakes?

 thanks,

 brian

   [quote][b]

_________________
Brian Meyette, Cornish, NH

RV-7A QB tipup, supercharged Subaru STi engine, MT CS prop, all glass day/night/IFR panel, being built with solar and wind power

N432MM

http://brian76.mystarband.net/RV-7Ahome.htm

t6pilot(at)cfl.rr.com
Guest

Posted: Thu Aug 27, 2009 7:26 pm Post subject: recommended RV brake fluid

Mil H 5606 normally is used for brake fluid and you  can find it here http://www.aircraftspruce.com/search/search.php.   Recommend that you go to the Cleveland website to be sure.  Also, it's  probably in your Cleveland Brake instructions.  Do not use automotive,  it'll melt the seals...  Good luck and fly safe.

 [quote]   ---

pitts_pilot(at)bellsouth.
Guest

Posted: Thu Aug 27, 2009 7:26 pm Post subject: recommended RV brake fluid

The most common is 5606 .... and there is a higher temp fluid out there too.

Linn



Brian Meyette wrote:

 	  Quote: 	
		   my RV-7A construction manual says I must not use automotive brake, but 

 instead "use only the aircraft brake fluid recommended by the 

 manufacturer".  But they don't say what this fluid is.   Does anyone 

 know what fluids are recommended for use with the standard Van's 

 Cleveland disk brakes?

 thanks,

 brian

 

 *

 

 

 *

bmeyette

Joined: 14 Mar 2007
Posts: 72
Location: Cornish, NH

Posted: Thu Aug 27, 2009 7:48 pm Post subject: recommended RV brake fluid

Would you, or anyone, happen to know the Cleveland web  site?  I googled "cleveland brakes" before sending the original message,  but all I got was sellers, not the mfg site.  Or their phone number woudl  work, too.

 thanks,

 brian



   From: owner-rv-list-server(at)matronics.com  [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Randy  Difani

Sent: Thursday, August 27, 2009 11:08 PM

To:  rv-list(at)matronics.com

Subject: Re: recommended RV brake  fluid

 

 Mil H 5606 normally is used for brake fluid and you  can find it here http://www.aircraftspruce.com/search/search.php.   Recommend that you go to the Cleveland website to be sure.  Also, it's  probably in your Cleveland Brake instructions.  Do not use automotive,  it'll melt the seals...  Good luck and fly safe.

 [quote]   ---

passpat(at)aol.com
Guest

Posted: Thu Aug 27, 2009 7:48 pm Post subject: recommended RV brake fluid

use 5606 brake and hdy fluid

 

 

 --

Kellym

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

Posted: Thu Aug 27, 2009 7:51 pm Post subject: recommended RV brake fluid

From the RV-10 list archives:

"A couple of RV-x main landing gear caliper fires that

consumed the glass pant caused a few to change from H-5606 a few years

back. The flame propagation was right below each main AVGAS fuel tank.

Fiberglass fires are a perverted thing to watch. So take a test sample

and learn by experiment not experience how the cured resin and glass

strands come to life until gone. Mine was watching a '69 Vette being

prepped for custom paint.



VANS mantra is stay conservative with the brakes and build your kit bone

stock.



Mil H-83282 provides another level of combustion protection.  I have

found that H-5606 tends to coagulate with age. Its low flash point is

routinely accepted by most builders without consideration of

alternatives."



Brian Meyette wrote:

 	  Quote: 	
		   my RV-7A construction manual says I must not use automotive brake, but 

 instead "use only the aircraft brake fluid recommended by the 

 manufacturer".  But they don't say what this fluid is.   Does anyone 

 know what fluids are recommended for use with the standard Van's 

 Cleveland disk brakes?

 thanks,

 brian

 

 *

 

 

 *

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

gyoung

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

Posted: Thu Aug 27, 2009 8:25 pm Post subject: recommended RV brake fluid

The company is actually Parker-Hannifin.  Try

  

http://www.parker.com/portal/site/PARKER/menuitem.14ecfc66e7a40c1af8500f199420d1ca/?vgnextoid=43cb5242ade5c110VgnVCM10000032a71dacRCRD&vgnextfmt=default&Keyword=AIRCRAFT+WHEELS+%26+BRAKES&Wtky=AIRCRAFT+WHEELS+%26+BRAKES 

If that  URL is broken go to www.parker.com and  browse to Products/Aircraft Wheels and Brakes. All kinds of info including  manuals.

 Regards,

Greg Young

  



 [quote]         From: owner-rv-list-server(at)matronics.com    [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Brian    Meyette

Sent: Thursday, August 27, 2009 10:42 PM

To:    rv-list(at)matronics.com

Subject: RE: recommended RV brake    fluid

   

   Would you, or anyone, happen to know the Cleveland web    site?  I googled "cleveland brakes" before sending the original message,    but all I got was sellers, not the mfg site.  Or their phone number woudl    work, too.

   thanks,

   brian



         

[b]

Vanremog(at)aol.com
Guest

Posted: Thu Aug 27, 2009 9:35 pm Post subject: recommended RV brake fluid

IMO, don't bother with the crappy old 80 yr old MIL-H-5606 fluid.  Get  Viton O-rings installed in your calipers and go with the updated (50 yr old)  higher performance fluid MIL-PRF-83282 developed after the military got tired of  putting out brake fires.  Check the archives and get with the  program.  A brake fire will ruin your day.

  

 -N1GV

  

  In a message dated 8/27/2009 7:56:01 P.M. Pacific Daylight Time,  bmeyette(at)gmail.com writes:

  	  Quote: 	
		  my RV-7A construction manual    says I must not use automotive brake, but instead "use only the aircraft brake    fluid recommended by the manufacturer".  But they don't say what this    fluid is.   Does anyone know what fluids are recommended for use    with the standard Van's Cleveland disk  brakes? 	


 

  [quote][b]

Ed Anderson

Joined: 10 Jan 2006
Posts: 475

Posted: Fri Aug 28, 2009 3:30 am Post subject: recommended RV brake fluid

Having experienced a ruptured brake line and ensuing brake fluid fire while using the 5606 fluid (Flash point around 240F), I strongly agree – use the Mi.-PRF-83232 – it’s flash point is around 440F.  The nice part is - it’s fully compatible with the 5606 fluid so you don’t have to flush your lines or replace type of seal.  Naturally the more 5606 left in the system the lower the flash point from that of pure 83232.  So using this fluid requires no changes to the installation – and since it is compatible with 5606 – you could always add 5606 (available at any FB0) if you find yourself needing brake fluid while away from your gallon of 83232.  

   

 I would also suggest considering stainless steel, Teflon lined or other “real” brake lines.  My aluminum tubing apparently fatigued and blew a chunk of the tubing wall out after an aborted take off (hot rotors). This could have been a result of me “working” hardening it while curving it around the landing rod, unnoticed damage or just material failure – but whatever the cause, you want to avoid it.  But, the spraying of the low flash point 5606 on the hot rotor caused the real excitement.   The resulting fire ball rose above the wing (as seen in video made by nephew), the brake peddle went to the floor and an excursion off the runway followed. Upon stopping, I popped the canopy and smelled burning resin - yes, the wheel pant was on fire and burning just below the full wing tank!!   Fortunately, the fire was quickly put out and no damage to aircraft thanks to a small shallow ditch which arrested further progress.    

   

I know the aluminum tubing has been around a long time and used successfully, but there have also been several reports of brake failure.  At least the SS brake lines are more likely to start seeping fluid than having a catastrophic failure.  The SS brake line less likely to fail.  I even went to the effort of adding rotors with double the thickness of standard rotors.  The idea was that given twice the mass of the thicker rotor the same heat content would raise its temperature less.  The side benefit of the thicker rotors are no brake fade, more even wear on the pads and less frequent pad replacement.  

   

Just my $0.02 YMMV  

   

Ed  

     

Ed Anderson  

Rv-6A N494BW Rotary Powered  

Matthews, NC  

eanderson(at)carolina.rr.com  

http://www.andersonee.com  

http://www.dmack.net/mazda/index.html  

http://www.flyrotary.com/  

http://members.cox.net/rogersda/rotary/configs.htm#N494BW  

http://www.rotaryaviation.com/Rotorhead%20Truth.htm[url=http://www.dmack.net/mazda/index.html][/url]  

        

  

From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Vanremog(at)aol.com

 Sent: Friday, August 28, 2009 1:33 AM

 To: rv-list(at)matronics.com

 Subject: Re: recommended RV brake fluid  

  

     

IMO, don't bother with the crappy old 80 yr old MIL-H-5606 fluid.  Get Viton O-rings installed in your calipers and go with the updated (50 yr old) higher performance fluid MIL-PRF-83282 developed after the military got tired of putting out brake fires.  Check the archives and get with the program.  A brake fire will ruin your day.  

    

   

    

-N1GV  

    

   

      

In a message dated 8/27/2009 7:56:01 P.M. Pacific Daylight Time, bmeyette(at)gmail.com writes:  

   	  Quote: 	
		    

my RV-7A construction manual says I must not use automotive brake, but instead "use only the aircraft brake fluid recommended by the manufacturer".  But they don't say what this fluid is.   Does anyone know what fluids are recommended for use with the standard Van's Cleveland disk brakes?  	
  

    

       

  

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       [quote][b]

_________________
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com

khorton01(at)rogers.com
Guest

Posted: Fri Aug 28, 2009 4:43 am Post subject: recommended RV brake fluid

The problem with MIL-H-5606 fluid is that it has quite a low flash

point (about 215 deg F).  If your brakes are hot, and a line fails,

spraying brake fluid on the brake disk, you will have a fire.  The

wheel pant will catch on fire too, and this whole thing is burning

away below the fuel tank.  Several RVs have had brake fires.

Fortunately everyone so far has managed to get the fire put out

without losing the aircraft, but it is still something to attempt to

avoid.



MIL-PRF-83282 is a replacement to MIL-H-5606 that was developed by the

military, with a flash point of 470 deg F, or higher.  It is fully

compatible with all the seals.  It is not that much more expensive,

but it is a little harder to find.  If you are on the road, and need

to top up your brake system, you can add some MIL-H-5606 fluid to the

MIL-PRF-83282, but the resulting mixture has a slightly lower flash

point.



I found Royco 782, a MIL-PRF-83282 fluid, at a local supplier (Leavens

Brothers in Toronto) for $12 a quart.  It should be cheaper in the

USA.  This fluid is specified for some corporate aircraft, so you may

find it at a local FBO.

--

Kevin Horton

Ottawa, Canada



On Thu, Aug 27, 2009 at 23:42, Brian Meyette<bmeyette(at)gmail.com> wrote:

[quote] Would you, or anyone, happen to know the Cleveland web site?  I googled

 "cleveland brakes" before sending the original message, but all I got was

 sellers, not the mfg site.  Or their phone number woudl work, too.

 thanks,

 brian

 ________________________________

 From: owner-rv-list-server(at)matronics.com

 [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Randy Difani

 Sent: Thursday, August 27, 2009 11:08 PM

 To: rv-list(at)matronics.com

 Subject: Re: recommended RV brake fluid



 Mil H 5606 normally is used for brake fluid and you can find it here

 http://www.aircraftspruce.com/search/search.php.  Recommend that you go to

 the Cleveland website to be sure.  Also, it's probably in your Cleveland

 Brake instructions.  Do not use automotive, it'll melt the seals...  Good

 luck and fly safe.



 ---

rv(at)thelefflers.com
Guest

Posted: Fri Aug 28, 2009 5:41 am Post subject: recommended RV brake fluid

Skygeek has Royco 782 for $8.14 a quart



http://www.skygeek.com/royco-782-synthetic-fire-resistant-hydraulic-fluid.ht

ml  



bob



--

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