I whole heartedly agree with Ed Holyoke about replacing the MIL-H_5606 with
the Mil-H-8328. Being one of those who had experience with a brake fluid
fire while using the older MIL-H_5606, I never realized until after the
incident that its' flash point was just a bit above the boiling point of
water. Fortunately I only lost a wheel pant an tube/tire out of the
incident.
I also replace the aluminum tubes ( the side of the right brake line blew a
chunk out and sprayed the hot rotor with brake fluid) with stainless steel
braided brake lines and replace the brake rotors with a set that had double
the thickness of the standard RV brake rotor. Doubling the mass with the
same amount of heat effectively reduces the temperature of the mass.
The thicker rotors provided an unexpected side benefit in that brake fade
even after a hard stop is gone and the pads wear more evenly and last
longer.
But, of all my changes the switch to the MIL-H-8328 is the cheapest and
probably the most effective in reducing probably of brake fluid fire.
YMMV
Ed
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@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
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Ed Holyoke
Sent: Wednesday, November 18, 2009 1:36 AM
To: rv-list@matronics.com
Subject: Re: Brakes
And Viton O-rings at the calipers. They're rated for higher temps.
Pax,
Ed Holyoke
Kelly McMullen wrote:
>
> If you mean Mil 5606, consider an improvement:
> "Standard" brake fluid for GA aircraft is MIL-H-5606. This fluid has
> been around forever and works fine, but can be improved upon.
> MIL-H-83282 was introduced a few years back and is a synthetic
> upgrade. It performs better in every regard, but of special interest
> is the flash point. 5606 has a flash point of around 225 whereas
> 83282 is around 425. This can be a factor with RVs because there have
> been several reported cases of brake fires on RVs and some have taken
> the whole aircraft with it. Do yourself a favor, upgrade the standard
> MIL-H-5606 to MIL-H-83282: Royco 782 or Aero Shell 31.
>
> Tom Gummo wrote:
>>
>> On the non pressure side, they are nice as you can see if there is
>> RED fluid in the lines.
>>
>> Tom Gummo
>> Harmon Rocket II
>> 370 hours and still smiling.
>>
>>
>> ----- Original Message ----- From: "Kelly McMullen"
>> <kellym@aviating.com>
>> To: <rv-list@matronics.com>
>> Sent: Tuesday, November 17, 2009 6:32 PM
>> Subject: Re: Brakes
>>
>>
>>>
>>> http://www.bonacoinc.com/
>>> I believe they have kits for your RV, but the website has little
>>> info beyond what hose and fittings they have available.
>>>
>>> Norman Hunger wrote:
>>>> Hi everybody, I'm poking around my long dormant resurrected kit and
>>>> noticing the right side optional brake pedal lines are white
>>>> plastic. Does any one sell a kit to do this with nicer lines? Can
>>>> small AN fittings be used here?
>>>>
>>>> I was reading about a brake pedal improvement where the short pivot
>>>> point bolts are replaced with AN3-60 bolts. The result is one bolt
>>>> all the way across the bottom of the pedal instead of a single bolt
>>>> on each side. The better alignment of the single bolt shaft reduces
>>>> the possibility of binding and makes the pedals operate smoother.
>>>> Is this true?
>>>>
>>>> I also read some time back about one complaining about draggy
>>>> brakes and the need to upgrade the springs on the master cylinders
>>>> for stronger ones. Is this true?
>>>>
>>>> And what about the brakes? My Vans wheels and brakes and tires are
>>>> now about ten years old. Is it worth while to install Grove wheels
>>>> and brakes? Do they work better?
>>>> http://www.groveaircraft.com/56-1a.html
>>>>
>>>> Who makes the best tires?
>>>>
>>>> Thanks for your support....
>>>> Norman Hunger
>>>> RV6A Delta BC
>>>> Do not archive
>>>> Nov 17-09 - 15
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
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>>>
>>>
>>>
>>
>>
>>
>>
>>
>
>
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