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01-30-2017, 08:59 AM
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Join Date: May 2005
Location: Rescue, CA. KROB
Posts: 352
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Beringer brakes.... Dot 4 or MIL fluid?
Ok guys, I'm about to order the Beringer brakes. You can choose which fluid you will be using. The lady I spoke to at Beringer said most people from the US choose the MIL-PRF-87257 fluid and most in Europe use the DOT-4. Sounds like there are pros and cons to each. Which did you choose and why?
Thanks
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Rob Lasater
Rv-14 flying baby, yeah.
Paid Dec 2019
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01-30-2017, 09:13 AM
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Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 2,584
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Order the cylinders with the Nitril seals for 87257 fluid. The EPDM seals are for DOT4, automotive brake fluid.
Tom
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Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
Proud Vendor for RV1, Donator to VAF
RV7 Tail Kit Completed, Fuse started-Pay as I go Plan
Ridgeland, SC
www.tsflightlines.com, www.asflightlines.com
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01-30-2017, 09:16 AM
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Join Date: Jan 2005
Location: NC25
Posts: 3,503
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MIL-PRF-87257
Quote:
Originally Posted by Av8rRob
Ok guys, I'm about to order the Beringer brakes. You can choose which fluid you will be using. The lady I spoke to at Beringer said most people from the US choose the MIL-PRF-87257 fluid and most in Europe use the DOT-4. Sounds like there are pros and cons to each. Which did you choose and why?
Thanks
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MIL-PRF-87257 is synthetic MIL-5606 that does not burn (catch fire) as easy. It will still burn but reduces the risk of a brake fire over 5606. MIL-PRF-87257 can also be mixed with 5606. IF you are on a trip and land at an airport, there is a good chance you will be able to find seals and brake fluid at the airport that will work without having to make a trip to an auto parts store.
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Gary A. Sobek
NC25 RV-6 Flying
3,400+ hours
Where is N157GS
Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.
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01-30-2017, 10:19 AM
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Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,828
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I'm Experimenting with my Experimental, DEX 6 ATF, flash 428 F. compared to the aviation stuff 458 F. so far so good.
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7A Slider, EFII Angle 360, CS, SJ.
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01-30-2017, 12:00 PM
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Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 2,584
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For nitrile seals, NOT for EDPM seals.
Tom
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Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
Proud Vendor for RV1, Donator to VAF
RV7 Tail Kit Completed, Fuse started-Pay as I go Plan
Ridgeland, SC
www.tsflightlines.com, www.asflightlines.com
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01-30-2017, 02:54 PM
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Join Date: May 2005
Location: Rescue, CA. KROB
Posts: 352
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So, the opinion is the mil is better than dot-4 fluid?
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Rob Lasater
Rv-14 flying baby, yeah.
Paid Dec 2019
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01-30-2017, 03:02 PM
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Join Date: Oct 2012
Location: Clearwater, FL KCLW
Posts: 1,281
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I have recently done the same research and decided on the Royco 782, aka MIL-PRF-83282, http://www.aircraftspruce.com/catalo...?clickkey=4008
Higher flashpoint than the 5606, no seal or compatibility issues, so I don't have to worry about completely flushing my system, or topping off with 5606 somewhere if that's all I can find. I am also going ahead and replacing my brake lines with stainless flex hose down the gear leg to make future service easier.
Chris
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Chris Johnson
RV-9A - Done(ish) 4/5/16! Flying 4/7/16
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02-01-2017, 07:14 PM
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Join Date: May 2005
Location: Rescue, CA. KROB
Posts: 352
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Ok, so I ordered the mineral oil kit today. FYI, they are offering 30% off their kits now if you're on the fence.
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Rob Lasater
Rv-14 flying baby, yeah.
Paid Dec 2019
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02-01-2017, 07:33 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,931
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Brake fluid
Quote:
Originally Posted by Av8rRob
Ok, so I ordered the mineral oil kit today. FYI, they are offering 30% off their kits now if you're on the fence.
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Mineral oil kit?
I thought you were going with Barringer recommendation MIL-PRF-87257?.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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02-01-2017, 07:35 PM
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Join Date: May 2005
Location: Rescue, CA. KROB
Posts: 352
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Yes, I'm getting the set with the nitrile seals for that type of fluid.
__________________
Rob Lasater
Rv-14 flying baby, yeah.
Paid Dec 2019
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