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04-20-2016, 09:17 AM
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Join Date: Feb 2006
Posts: 165
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Bleeding Brakes
Hello to all,
Thought I would tap into the "Brain Trust". Getting ready to put brake fluid into the system. What are we using to pressurizing the system? I think I should fill from the calipers. Any hints would be appreciated.
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Craig Rufi
FLYING NOW AFTER 13+ YEARS. NICE FLYING AIRCRAFT!!
RV-10/Empennage/Wings/QB Fuselage/Wiring/Doors done finally, Cowling done. Stein panel complete, and connecting all those wires :-))Thousand Oaks, Ca. Dues paid for 2019
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04-20-2016, 09:24 AM
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Join Date: Jun 2010
Location: Sunman, IN
Posts: 2,189
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Not pressure, vacuum
Go and get a mighty vac or something similar. Attach to reservoir, attach tube to bleed screw on caliper, put tube in fluid, draw a vacuum and open the bleed screw...
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Bob
Aerospace Engineer '88
RV-10
Structure - 90% Done
Cabin Top - Aaarrghhh...
EFII System 32 - Done
297 HP Barrett Hung
ShowPlanes Cowl with Skybolts Fitted - Beautiful
Wiring...
Dues+ Paid 2019,...Thanks DR+
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04-20-2016, 09:41 AM
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Join Date: Aug 2015
Location: Cape Coral, FL
Posts: 350
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I use a pump type oiling can from the hardware store, slip a tube over the nozzle and fill from the caliper on up.
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Thanks,
Anthony
RV6-A "Aluminum Mistress"
Too many hobbies- not enough time.
2016, 2017, 2018, 2019 donor and happy to do it.
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04-20-2016, 09:47 AM
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Join Date: Jan 2005
Location: Tampa, FL
Posts: 2,861
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I use the ATS Blake bleeder tank which looks like a glorified garden sprayer tank.
Many have rolled their own.
The hose has a quick release and comes with a couple fittings to mount to most calipers. You attach the tank to the bleeder and run a hose out of the top of the reservoir to catch any overflow. With the tank connected to the bleeder and the tank's valve closed, you pump the tank up, open the bleeder, then open the valve on the tank. The pressure forces fluid from the tank to the reservoir pushing all the air out along the way. Takes me less then 10 min to do both sides.
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Todd "I drink and know things" Stovall
PP ASEL-IA
RV-10 N728TT - Flying!
WAR EAGLE!
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04-20-2016, 10:10 AM
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Join Date: Mar 2012
Location: High River, Ab
Posts: 12
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large disposable syringe from farm supply place (50ml from memory) and a piece of vinyl tubing, push up from caliper bleed screw, my matco set up takes 1 full syringe,
cost, about $2.50 for syringe
Jay
CGVRZ
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04-20-2016, 10:54 AM
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Join Date: Jan 2005
Location: Winter Haven, FL
Posts: 263
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+1 Planecrazy
I do the same. Cheap pump oil can and short piece of tubing. Push fluid in from caliper until it runs out the reservoir. Much easier if the cap is off 
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Kevin Crews
Bartow, FL
RV-6 'Woo hoo!'
2019 =VAF= donor
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04-20-2016, 12:02 PM
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Join Date: Sep 2007
Location: BC
Posts: 1,674
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I also do same as planecrazy. Remember, there will be times to bleed one side or the other and having that dedicated pump can ready to go is handy.
Bevan
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RV7A Flying since 2015
O-360-A1F6 (parallel valve) 180HP
Dual P-mags
Precision F.I. with AP purge valve
Vinyl Wrapped Exterior
Grand Rapids EFIS
Located in western Canada
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04-20-2016, 12:13 PM
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Join Date: Jun 2005
Location: SoCal
Posts: 2,452
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I wrote an article on KitPlanes about making a pump similar to the one shown above. All the parts came from a hardware store and it cost approx $20. A few pumps to pressurize the tank and no more work. It was around nov/dec 2014. Everyone around the airport comes and borrows it. They just add fluid to the container.
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Axel
RV-4 fastback thread and Pics
VAF 2020 paid VAF 704
The information that I post is just that; information and my own personal experiences. You need to weight out the pros and cons and make up your own mind/decisions. The pictures posted may not show the final stage or configuration. Build at your own risk.
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04-20-2016, 12:31 PM
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Join Date: Feb 2005
Location: Bridgewater, MA - KPYM
Posts: 458
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I use an RC model electric fuel pump to both suck out the old fluid and pump in the new. To fill or extract connect the pump to the caliper.
I have a modified brake reservoir cap with a hose that I place in an empty water bottle. When filling I run the pump until brake fluid exits the reservoir. This helps ensure that any air bubbles are removed. Takes about a minute a side. (I have a reservoir attached to each master cylinder).
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Mike Draper
RV-8 N468RV
First Flight 11/13/2011
TMX0360, Pmags, CS
Bridgewater, MA
KPYM
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04-20-2016, 03:21 PM
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Join Date: Feb 2006
Posts: 165
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Thanks to All
Thanks to all for the enlightening. I think I will try the oil can method for starters. I think Harbor freight might have the MITY VACUUM also if the oil can does not work....
__________________
Craig Rufi
FLYING NOW AFTER 13+ YEARS. NICE FLYING AIRCRAFT!!
RV-10/Empennage/Wings/QB Fuselage/Wiring/Doors done finally, Cowling done. Stein panel complete, and connecting all those wires :-))Thousand Oaks, Ca. Dues paid for 2019
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