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12-21-2018, 01:49 PM
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Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,792
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Packing bears with rubber seal
Unlike the RV-7A, the bearings that come with the RV-12iS mains have the rubber seals. I used the Handy Packer as I did with open bearings, but you can't really see proof that the grease when where it needed to go like you can with the open bearings . And obviously, since we're in assembly, there's no old dirty grease inside to tell the tale.
I'm not a big fan of the "palm method" because it's messy and I think that rubber seal gets in the way.
I saw a reference somewhere to a needle that Matco sells (which I bought just because I had $6 lying around doing nothing productive) for "sealed" bearings , but these aren't really sealed in the classic sense, right?
So what is your preferred method?.
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12-21-2018, 04:31 PM
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Join Date: Jan 2011
Location: Eatonton, GA
Posts: 215
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Nitrile gloves and palm. Just did it yesterday during my second annual on the 8. Worked perfect. Just use mineral spirits to clean and dry with compressor w/o spinning with the air.
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Jeff Green
2016 RV-8 #82985
1968 E33C Aerobatic Bonanza
Pleased to donate Dec 2019
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12-21-2018, 04:53 PM
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been here awhile
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Join Date: Dec 2004
Location: North Alabama
Posts: 4,300
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Maybe it's the eggnogg....but the title of your thread brought up visions of polar bears feasting on rubber seals.......
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12-21-2018, 05:26 PM
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Join Date: Oct 2010
Location: Elkton, Md.
Posts: 1,650
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I have used my old Blue Point packer for years with no issues. When you see the grease oozing out around the top of the roller near the seal and the bear doesn’t want to spin, it’s a safe bet it’s ok.
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Wag Aero Sport Trainer built,sold and wrecked
N588DF RV12 #336 built, sold and alive and well in New York
N73DF RV12 #244 built, sold and alive and well in Florida
N91 RV RV9 I wish I could say I built this one! Mark Santoleri hit the ball out of the park on this gem.
Currently restoring a 1978 Citabria GCBC
Last edited by Dave12 : 12-23-2018 at 05:29 AM.
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12-21-2018, 05:50 PM
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Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 2,056
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Quote:
Originally Posted by Sam Buchanan
Maybe it's the eggnogg....but the title of your thread brought up visions of polar bears feasting on rubber seals.......
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They don't do polar bars in Alabama... 
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Jim Stricker
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 618
LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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12-23-2018, 09:21 AM
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Join Date: Jan 2016
Location: Chiloquin OR
Posts: 94
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Was wondering about the bear deal, ha click bait yup. LOL
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12-23-2018, 01:12 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,514
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Quote:
Originally Posted by LettersFromFlyoverCountry
Unlike the RV-7A, the bearings that come with the RV-12iS mains have the rubber seals. I used the Handy Packer as I did with open bearings, but you can't really see proof that the grease when where it needed to go like you can with the open bearings . And obviously, since we're in assembly, there's no old dirty grease inside to tell the tale.
I'm not a big fan of the "palm method" because it's messy and I think that rubber seal gets in the way.
I saw a reference somewhere to a needle that Matco sells (which I bought just because I had $6 lying around doing nothing productive) for "sealed" bearings , but these aren't really sealed in the classic sense, right?
So what is your preferred method?.
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I have never heard of packing a sealed bearing, they will last forever. Is there some publication that recommends this with proof of need?
Good to hear you still exist Bob, I sent you an email.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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12-23-2018, 01:29 PM
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Join Date: Dec 2008
Location: Lacey, WA
Posts: 1,361
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Quote:
Originally Posted by BillL
I have never heard of packing a sealed bearing, they will last forever. Is there some publication that recommends this with proof of need?
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Actually, the bearing discussed is not a sealed bearing; it's a bearing with an integral seal:
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Tony
E-LSA RV-12 ULS
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12-23-2018, 01:51 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,514
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Quote:
Originally Posted by Tony_T
Actually, the bearing discussed is not a sealed bearing; it's a bearing with an integral seal:
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And all is revealed !!! I withdraw my question.
His comment about a needle valve led me to the different conclusion.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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12-23-2018, 07:44 PM
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Join Date: Jul 2012
Location: North Brunswick, NJ
Posts: 163
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just FYI, i was able to use a regular bearing packer tool (Lisle #34550 Handy Packer Bearing Packer) without any issue due to the integral seal.
I thought maybe the seal (plastic) would crack or snap.. but it was fine... its pliable.
The tool did a better job than I could ever do by hand. the bearing weighed a ton after i packed it... lots of grease inside!
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