Today's Message Index:
----------------------
1. 06:06 AM - Chat Reminder (George Race)
2. 07:10 AM - Re: Rudder Bushings (BobbyPaulk@comcast.net)
3. 07:39 AM - Re: Re: Rudder Bushings (JohnDRead@aol.com)
4. 09:03 AM - Re: Re: Rudder Bushings (Michel Therrien)
5. 09:03 AM - Re: Rudder hinge wear - solution anyone? (Michel Therrien)
6. 04:35 PM - Re: Re: Rudder Bushings (Bryan Martin)
7. 04:35 PM - Re: Rudder hinge wear - solution anyone? (Larry McFarland)
Message 1
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Message 2
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| Subject: | Re: Rudder Bushings |
Guys,
Way back a guy named John Read sent me a drawing and part numbers for sinte
red Bronze bushings for the rudder. I bought them cheaper than you could ev
er buy the material to make them. Here is the address / phone. I called and
found a local distributor. The drawing (.pdf ) is 1.3 megs so if you want,
e-mail me off list and i will send you a copy. I have not installed them a
s yet but plan to at 200 hrs. or when play is detected.
The bearings should be available from bearing distributors nationwide. The
lower pivot bearing part number is SF-812-4 the upper bearing part number i
s SF-812-5
Though the bearings come pre-lubricated I suggest that a small quantity of
molybdenum disulfide (MOS2) grease be applied to each bearing surface and t
o the face of each bearing flange. MOS2 grease has extremely high film stre
ngth so any wear should be very slight.
Symmco Inc.
40 South Park Street ,
Sykesville , PA 15865
Phone =93 814.894.2461
Fax =93 814.894.5272
Internet - www.symmco.com
DO NOT ARCHIVE.
Bobby Paulk
N131BP
Jacksonville, Fl.
Message 3
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| Subject: | Re: Rudder Bushings |
Hi Bobby;
The advantage of the bearing scheme I designed is that
aside from making the larger hole in the two bearing plates the original
4130
bushings and hardware are used. Even with minimal lubricant they should
not
have worn. I would appreciate a copy of the drawings too,
Regards, John
CH701 - Colorado - Jabiru 3300
Cell: 719-494-4567
Home: 303-648-3261
In a message dated 6/28/2010 8:10:43 A.M. Mountain Daylight Time,
BobbyPaulk@comcast.net writes:
Guys,
Way back a guy named John Read sent me a drawing and part numbers for
sintered Bronze bushings for the rudder. I bought them cheaper than you
could
ever buy the material to make them. Here is the address / phone. I called
and found a local distributor. The drawing (.pdf ) is 1.3 megs so if you
want, e-mail me off list and i will send you a copy. I have not installed
them
as yet but plan to at 200 hrs. or when play is detected.
_The bearings should be available from bearing distributors nationwide.
The lower pivot bearing part number is SF-812-4 the upper bearing part nu
mber
is SF-812-5
Though the bearings come pre-lubricated I suggest that a small quantity of
molybdenum disulfide (MOS2) grease be applied to each bearing surface and
to the face of each bearing flange. MOS2 grease has extremely high film
strength so any wear should be very slight.
Symmco Inc.
40 South Park Street,
Sykesville, PA 15865
Phone =93 814.894.2461
Fax =93 814.894.5272
Internet - www.symmco.com_ (http://www.symmco.com/)
(http://www.symmco.com/) DO NOT ARCHIVE.
Bobby Paulk
N131BP
Jacksonville, Fl.
========================
============
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========================
============
========================
============
(http://www.matronics.com/contribution)
========================
============
Message 4
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| Subject: | Re: Rudder Bushings |
I would definitely like to get the drawings.=C2-
=C2-
Thanks all for the information..=C2-=C2- To Bryan.. you may be right, I
have not been very dilligent at keeping it greased.
=C2-
----------------------------
Michel Therrien CH601-HD, C-GZGQ
http://mthobby.pcperfect.com/ch601
http://pages.infinit.net/mthobby
--- On Mon, 6/28/10, JohnDRead@aol.com <JohnDRead@aol.com> wrote:
From: JohnDRead@aol.com <JohnDRead@aol.com>
Subject: Re: Zenith601-List: Re: Rudder Bushings
Received: Monday, June 28, 2010, 10:23 AM
Hi Bobby;
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2
-=C2-=C2-=C2-The advantage of the bearing scheme I designed is that
aside from making the larger hole in the two bearing plates the original
=C2-4130 bushings and hardware are used. Even with minimal lubricant they
should not have worn.=C2-I would appreciate a copy of the drawings too,
=C2-
Regards, John
CH701 - Colorado - Jabiru 3300
Cell: 719-494-4567
Home: 303-648-3261
=C2-
In a message dated 6/28/2010 8:10:43 A.M. Mountain Daylight Time, BobbyPaul
k@comcast.net writes:
Guys,
Way back a guy named John Read sent me a drawing and part numbers for sinte
red Bronze bushings for the rudder. I bought them cheaper than you could ev
er buy the material to make them. Here is the address / phone. I called and
found a local distributor. The drawing (.pdf ) is 1.3 megs so if you want,
e-mail me off list and i will send you a copy. I have not installed them a
s yet but plan to at 200 hrs. or when play is detected.
The bearings should be available from bearing distributors nationwide. The
lower pivot bearing part number is SF-812-4 the upper bearing part number i
s SF-812-5
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2- Though t
he bearings come pre-lubricated I suggest that a small quantity of molybden
um disulfide (MOS2) grease be applied to each bearing surface and to the fa
ce of each bearing flange. MOS2 grease has extremely high film strength so
any wear should be very slight.
#yiv27073038 st1\00003a*{}
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2
-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2- Symmco Inc.
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2
-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2- 40 South Park
Street ,
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2
-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2- Sykesville , P
A 15865
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2
-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2- Phone
=93 814.894.2461
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2
-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2- Fax =93
814.894.5272
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2
-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-
=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2-=C2- Internet - www
.symmco.com
DO NOT ARCHIVE.
Bobby Paulk
N131BP
Jacksonville, Fl.
t href="http://www.matronics.com/Navigator?Zenith601-List">http://www.mat
ronics.com/Navigator?Zenith601-List
ms.matronics.com/">http://forums.matronics.com
tp://www.matronics.com/contribution">http://www.matronics.com/contribution
=0A=0A
Message 5
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| Subject: | Re: Rudder hinge wear - solution anyone? |
Larry, I think I did it differently than you.. in my case, the upper plate rotates
around the bushing that itself is captured in a fixed position between the
two angles attached to the rudder. The bolt does not rotate on any part.
Are you saying that the bushing should stay "with" the upper plate attached to
the fuselage and that the friction should be between the bolt and the bushing?
If so, that must be hard to lubricate...?
----------------------------
Michel Therrien CH601-HD, C-GZGQ
http://mthobby.pcperfect.com/ch601
http://pages.infinit.net/mthobby
--- On Sun, 6/27/10, Larry McFarland <larry@macsmachine.com> wrote:
> From: Larry McFarland <larry@macsmachine.com>
> Subject: Re: Zenith601-List: Rudder hinge wear - solution anyone?
> To: zenith601-list@matronics.com
> Received: Sunday, June 27, 2010, 10:27 AM
> --> Zenith601-List message posted
> by: Larry McFarland <larry@macsmachine.com>
>
> Michel Therrien wrote:
> Therrien <mtherr@yahoo.com>
> >
> > Hi group,
> >
> > I mentionned about the rudder upper bearing (hinge)
> becoming loose with time. I already replaced it
> once. It appears somewhat loose again. Did
> anyone invent a fix for this?
> >
> > ----------------------------
> > Michel Therrien CH601-HD, C-GZGQ
> >http://mthobby.pcperfect.com/ch601
> >http://pages.infinit.net/mthobby
> >
> > Michel,
> >
> > I had to machine
> new bushings. The paragraphs below, from my
> > journal, describe, I believe, the same issue and my
> solution.
> >
> >
> > The top bolt on the
> rudder rattled so the bolt was inspected and found to be
> worn and sloppy. Began again
> today with removal of the rudder I removed the
> press-fit bushing from the upper rudder plate by grinding a
> 3/16th inch Allen screw head to .250-diameter and used a
> 3/8-inch socket and nut to pull it from the plate. Once
> home, I made 4 more bushings on the lathe that were better
> lengths for the rudder bracket gap. The loose bolt had
> caused wear at the top angle bracket holes and to the bolt.
> >
> >>>
> >>> This morning, the first press fit of the
> best-length bushing went well. The same screw used to remove
> the former bushing was used to pull it to a force-fit into
> place. The rudder was placed on the upper bushing and
> bolted. The bottom bushing was replaced with a slightly
> longer one and it too was given a fresh new bolt. Both were
> snugged to stop bolt rotation and secured with castle nut
> and cotter pins. Now bolt and bushing were the only working
> surfaces as intended.
> >>>
> >>> Larry McFarland 601HDS at
> www.macsmachine.com
> >>>
> >
> >
>
>
>
> Email Forum -
> FAQ,
> - MATRONICS WEB FORUMS -
> List Contribution Web Site -
> -Matt
> Dralle, List Admin.
>
>
>
>
Message 6
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| Subject: | Re: Rudder Bushings |
I keep a spray can of white lithium grease in the hangar. It's got a little straw
that sticks in the nozzle for pinpoint application. I can't recall the brand
name, but it should be available at auto parts stores. I put a little dab on
the hinges every so often. I use it on the piano hinges also, it goes on thin
enough to wick into the hinges and leaves behind a film of grease after the solvent
evaporates. I wipe off the excess before the solvent evaporates. I haven't
noticed any significant wear yet after about 320 hours of flight time.
On Jun 28, 2010, at 11:59 AM, Michel Therrien wrote:
> I would definitely like to get the drawings.
>
> Thanks all for the information.. To Bryan.. you may be right, I have not been
very dilligent at keeping it greased.
>
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
Message 7
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| Subject: | Re: Rudder hinge wear - solution anyone? |
Michel,
The bushing was made as a press fit in the large plate. The bolt secures
center within the bushing and was easy to lubricate by greasing the bolt
on assembly.
The upper and lower plates held to center by the bolt are strong enough
to not allow the bolt to rotate in them. The actual rotation forces are
borne by
the largest surfaces of the bolt and inside the bushing. The top and
bottom bushing surfaces are not strained at all in flight. Wear on my
bolt occurred because
it was not tight and locked to allow no pivot within the upper and lower
plates. The bolt now rotates with the rudder and the bushing is fixed by
its fit
in the plate. I had to make 4 bushings to get it right. The bottom plate
holds the rudder at elevation as well so that the top bushing isn't
doing all the lifting.
If the bushing were allowed to rotate in the top and bottom plates, I
believe wear would be a significant issue at the top pivot assembly.
Doubt bronze would be as good in holding a press fit and that's why I
made mine of steel.
Larry McFarland 601HDS at www.macsmachine.com
Michel Therrien wrote:
>
> Larry, I think I did it differently than you.. in my case, the upper plate rotates
around the bushing that itself is captured in a fixed position between the
two angles attached to the rudder. The bolt does not rotate on any part.
>
> Are you saying that the bushing should stay "with" the upper plate attached to
the fuselage and that the friction should be between the bolt and the bushing?
If so, that must be hard to lubricate...?
>
>
> ----------------------------
> Michel Therrien CH601-HD, C-GZGQ
> http://mthobby.pcperfect.com/ch601
> http://pages.infinit.net/mthobby
>
>
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