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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 26320
Location: Livermore CA USA
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 Posted: Wed Jun 30, 2010 7:07 pm Post subject: Lubing The Tail Wheel Fork Bearing... |
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How the heck do you lube the bronze bearing on the tailwheel fork short of taking the giant nut off. I lubed it up good during initial assembly, then at about 40 hours, it started to kind of stick, so I dissembled and lubed it again. Now at 70 its doing it again. I foolishly put a Zerk fitting in the body of the thing, thinking that next time I could just shoot some lube in there. Great idea except that it doesn't work for such a tight fit.
Is there some "super lube" you can get that will last forever? I've used both graphite wheel bearing grease and Aeroshell #6 grease.
Thanks!
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's RV-8 Construction Blog
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: Enjoying The Fruits of 2500 Hours of Labor!
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HCRV6(at)comcast.net
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| Posted: Wed Jun 30, 2010 7:40 pm Post subject: Lubing The Tail Wheel Fork Bearing... |
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Matt,
If you find some of that "super lube" stuff please let me know, otherwise accept the fact that every oil change you need to disassemble the fork via the "giant nut" and clean and lube the locking pin and spring and the bearing shaft. I learned that the hard way when my locking tail wheel quit locking after about 150 hours. The pin had galled because of lack of lube and was stuck in the unlock (retracted) position. The grease fitting that is installed is useless for the reason you state.
Small price to pay for the many advantages of having the little wheel in back where it belongs  .
Harry Crosby
RV-6 N16CX, 705 hours
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mr.sun
Joined: 30 Jan 2007
Posts: 85
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| Posted: Wed Jun 30, 2010 7:41 pm Post subject: Lubing The Tail Wheel Fork Bearing... |
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I take mine all apart every so often and have a solvent bucket to clean all parts. Takes about 15 minutes. Then I dry them, grease them and reassemble. I do it at the annual and that seems to last all year.
I've got Van's tail wheel fairing but I don't think that keeps it cleaner at all.
do not archive
On Wed, Jun 30, 2010 at 8:06 PM, Matt Dralle <dralle(at)matronics.com (dralle(at)matronics.com)> wrote:
| Quote: | --> RV-List message posted by: Matt Dralle <dralle(at)matronics.com (dralle(at)matronics.com)>
How the heck do you lube the bronze bearing on the tailwheel fork short of taking the giant nut off. I lubed it up good during initial assembly, then at about 40 hours, it started to kind of stick, so I dissembled and lubed it again. Now at 70 its doing it again. I foolishly put a Zerk fitting in the body of the thing, thinking that next time I could just shoot some lube in there. Great idea except that it doesn't work for such a tight fit.
Is there some "super lube" you can get that will last forever? I've used both graphite wheel bearing grease and Aeroshell #6 grease.
Thanks!
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's RV-8 Construction Blog
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: Enjoying The Fruits of 2500 Hours of Labor!
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flyboyedwards(at)yahoo.co
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| Posted: Wed Jun 30, 2010 8:43 pm Post subject: Lubing The Tail Wheel Fork Bearing... |
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Hello all,
I bought my 4 last fall, and the tail wheel seemed fine. This spring it seemed to stick. I greased the zerk, and it didn't seem to help. I then again greased it about a month later, figuring it may take a little time to work the grease in. Now that I've done that, it seems to almost swivel too easy.
Perhaps in your situation, you may need a little more grease.
Keep in mind, that all greases are NOT compatible. Some harden when introduced to another.
Just food for thought.
Jason Edwards
RV-4 flying
Richland Center, WI.
--- On Wed, 6/30/10, HCRV6(at)comcast.net <HCRV6(at)comcast.net> wrote:
[quote]
From: HCRV6(at)comcast.net <HCRV6(at)comcast.net>
Subject: Re: Lubing The Tail Wheel Fork Bearing...
To: rv-list(at)matronics.com
Date: Wednesday, June 30, 2010, 10:39 PM
#yiv1863669556 p {margin:0;} Matt,
If you find some of that "super lube" stuff please let me know, otherwise accept the fact that every oil change you need to disassemble the fork via the "giant nut" and clean and lube the locking pin and spring and the bearing shaft. I learned that the hard way when my locking tail wheel quit locking after about 150 hours. The pin had galled because of lack of lube and was stuck in the unlock (retracted) position. The grease fitting that is installed is useless for the reason you state.
Small price to pay for the many advantages of having the little wheel in back where it belongs .
Harry Crosby
RV-6 N16CX, 705 hours
---
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Dale Ensing
Joined: 11 Jan 2006
Posts: 571
Location: Aero Plantation Weddington NC
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| Posted: Thu Jul 01, 2010 3:59 am Post subject: Lubing The Tail Wheel Fork Bearing... |
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Matt,
I suggest you try/use Molykote G-n paste. It is a molybdenum disulfide paste
(much higher moly content than a moly containing grease) that is especially
good for sliding friction and the minimal back and forth movement of the
tail wheel gear. It will stay in place better and reduces the "stick -
slip" you get when using a grease when there is minimal movement of the
shaft in the bushing.
Apply a good film to the bearing, shaft and locking pin with your fingers or
by brush after cleaning the parts.
BTW I use G-n paste on the friction washers and bushing on the front wheel
of my 6A. It does a much better job of allowing a smooth "brake out" of the
front wheel fork when steering yet maintains the necessary brake out force
important to a free swiveling front wheel.
Link to G-n paste
http://www.dowcorning.com/applications/search/products/details.aspx?prod=01889877&type=PROD
There is also a link on this page to find a distributor in your area. It is
available in an 80 gram tube which should be enough for several applications
over the years.
Dale Ensing
RV-6A
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Dale Ensing
RV-6A
Aero Plantation
Weddington NC |
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