Today's Message Index:
----------------------
1. 03:57 AM - Re: rudder bearing play (Paul Mulwitz)
2. 05:05 PM - My Monthly Commercial Message (George Race)
Message 1
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| Subject: | Re: rudder bearing play |
Hi John,
Thanks for the info. I looked at McMaster and found gobs of choices for
Oilite bearings. The were so inexpensive (most under $1) I thought it
might be possible to find them at a local hardware store.
Thanks again,
Paul
On 10/16/2011 10:16 PM, JohnDRead@aol.com wrote:
> Hi Paul,
> The manufacturer of the bearings I used for the rudder mod
> is Symmco Inc. www.symmco.com <http://www.symmco.com> in Sykesville
> PA. The Upper Rudder bearing is p/n SF-812-5 the Lower Rudder bearing
> is p/n SF-812-4. You can download their catalog from their web site. I
> reamed the holes in the plates to 0.0375, the bearings are 0.377 OD
> which gives a light press fit into the plates. The 4130 material
> supplied by Zenith is a good fit in the bearings. The bolts are
> torqued to the normal torque for AN3 bolts.
> Regards, John
>
> CH701 - Colorado - Jabiru 3300
>
> Cell: 719-494-4567
> Home: 303-648-3261
> In a message dated 10/16/2011 6:34:43 P.M. Mountain Daylight Time,
> psm@att.net writes:
>
> Hi John,
>
> Thanks for the drawing and comments on the rudder bearings.
>
> I'm not familiar with Oilite or sintered bronze. Can you give me
> any clues where to get that stuff and what form it takes? Do I
> order bearings or just the material and machine it to my design?
>
> Thanks,
>
> Paul
>
> On 10/16/2011 3:53 PM, JohnDRead@aol.com wrote:
>> I made a design for an Oilite bearing in the Rudder of my CH701.
>> The 4130 steel tube is clamped by the through bolt and rotates in
>> the bearing which can be replaced if it should wear. I do not
>> like steel in aluminum as a bearing pair. Picture attached. I did
>> a similar design for all of the rotating bearings on the wings
>> and stab of the 701. Lubricate at assembly with MoS2
>> grease. Remember our airplanes are /*Experimental*/ so use the
>> design at your own risk.
>> Regards, John
>>
>> CH701 - Colorado - Jabiru 3300
>>
>> Cell: 719-494-4567
>> Home: 303-648-3261
>> In a message dated 10/16/2011 12:25:57 P.M. Mountain Daylight
>> Time, psm@att.net writes:
>>
>>
>> Your comments on this issue got me to look at my rudder mounting.
>>
>> After only 20 hours of flight I can see measurable wear on
>> the portion
>> of the top bracket hole at the front (toward the nose) of the
>> hole. I
>> think the way this "Hinge" is designed the steel tube is
>> rotating
>> against the aluminum bracket.
>>
>> I don't know what I will do about this. Perhaps a slightly
>> larger steel
>> tube pressed into the aluminum will provide a way for the
>> inner tube to
>> move without removing aluminum. I'm concerned about friction
>> on this
>> approach, but some axle grease might help.
>>
>> Paul
>> Camas, WA
>> XL through 20 hours of phase I testing
>>
>>
>> On 10/15/2011 5:54 PM, mhubel wrote:
>> > --> Zenith601-List message posted by:
>> "mhubel"<mhubel@nemon.com>
>> >
>> > I just noted what I consider excess play in the top rudder
>> bearing in my CH601XL. It seems the design assumes the metal
>> bushing on the AN3 bolt will not move against the mounting
>> plates on the rudder.
>> >
>> > I plan to fix it with a slightly over sized bushing and
>> hole but I wonder if many others have noted this.
>> >
>> > --------
>> > Mark Hubelbank
>> > N708HU
>> > CH601XL
>> > Jabiru 3300
>> > Rotec TBI 40-3 carb
>> > Sensenich ground adj prop.
>> > 70 hr TAF
>> > Pictures at photo.hubbles.com
>> >
>> >
>> >
>> >
>> > Read this topic online here:
>> >
>> > http://forums.matronics.com/viewtopic.php?p=355163#355163
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>>
> *
>
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> s.matronics.com/">http://forums.matronics.com
> p://www.matronics.com/contribution">http://www.matronics.com/contribution
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Message 2
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| Subject: | My Monthly Commercial Message |
Hi All, starting to get cold up here in Michigan. The best days of Fall
flying will soon be behind us for another year.
To go along with all my custom built airplane parts, I have embarked in a
new direction.
My first item in that direction is now on my web site, a Passenger Warning
Placard for your Experimental Airplane panel.
Yes, I am now into plastic engraving, using my trusty CNC. It really does a
very nice job.
If you need any kind of special engraved plastic placards for your build,
please let me know.
I am hoping to discover a lot of new things to do with plastic engraving.
See my sample here,
http://www.mrrace.com/mykitairplane/passwarn/
Hope you builds are all going very well!
Blue Sky's and Tail Winds,
George
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