Today's Message Index:
----------------------
1. 03:28 PM - Re: Rudder Bearings (Mark Hubelbank)
2. 04:18 PM - Re: Rudder Bearings (Carlos Sa)
Message 1
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| Subject: | Re: Rudder Bearings |
Carlos,
I believe you had asked for the dimensions of the bearing, It is
3/16 ID and 5/16 OD. The full drawing is at:
http://www.mcmaster.com/#cadinlnord/57155k16/=jjty4f
On 10/01/2012 5:20 PM, Carlos Sa wrote:
> Mark, I would be interested on that too - but I see no pertinent
> picture... Could you perhaps provide a direct link?
>
> Thanks
>
>
> Carlos Sa
> CH601-HD, plans
>
> On 1 October 2012 16:59, Mark Hubelbank <mhubel@nemon.com
> <mailto:mhubel@nemon.com>> wrote:
>
> Bobby,
> I put in ball bearings. I never liked the original setup. It
> did not seem to be a proper bearing. There are some comments and
> pictures of it at www.n708hu.com <http://www.n708hu.com>
>
>
> On 10/01/2012 4:47 PM, BobbyPaulk@comcast.net
> <mailto:BobbyPaulk@comcast.net> wrote:
>> List
>> Re: 601 XL B
>> I am in the middle of my conditional inspection and have found
>> what I believe to be excessive play in the rudder bearings. (
>> nearly 1/16" at 160 hours ). The 1/4" steel sleeve is turning in
>> the aluminum and wearing it. ( the .187" aluminum ) . Part of the
>> play is in the fit between the 3/16" bolt and the 1/4" steel
>> bushing. I have kept it well lubed.
>> I have John Read's drawing from 2007 showing how to add Sintered
>> Bronze Bearings ( Symmco SF812 - 4 and - 5 ) bearings. This
>> requires boring the 1/4" hole in the aluminum to 3/8". I am
>> concerned about the edge distance metal left after boring the
>> hole to 3/8" OD.
>> I have found a 3/16" x 5/16" ( Symmco SF610 - 5 ) Sintered Bronze
>> bearing I am planning to use. This would eliminate the 1/4" OD
>> steel sleeve and require only a 5/16" hole in the .187 aluminum.
>> This would still afford more bearing surface than the Steel
>> sleeve against the .187" aluminum.
>> If I use this set up it would only take a few thousandths out of
>> the already elongated hole in the aluminum.
>> My 2 part question is - is there a better fix available - if not
>> is the 3/16" x 5/16" Sintered bronze bearing against the 3/16"
>> bolt strong enough to stand the loads generated by the rudder?
>>
>> Bobby ( age 74 )
>> Zodiac 601 XL "B"
>> Jabiru 3300 S/N 1141
>> Sensenich 64" x 51" Prop
>> Bing Carb 260 Main & 285 Needle Jet
>> Status - Flying 160 hrs.
>>
>>
>>
Mark Hubelbank
Ch601XL-B
Jabiru 3300
Sensenich adj prop
Rotec TBI-40-3
240 Hours airframe
Message 2
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| Subject: | Re: Rudder Bearings |
Mark, thanks much for all the info
Carlos
On 2 October 2012 18:28, Mark Hubelbank <mhubel@nemon.com> wrote:
> Carlos,
> I believe you had asked for the dimensions of the bearing, It is 3/16
> ID and 5/16 OD. The full drawing is at:
>
> http://www.mcmaster.com/#cadinlnord/57155k16/=jjty4f
>
> On 10/01/2012 5:20 PM, Carlos Sa wrote:
>
> Mark, I would be interested on that too - but I see no pertinent
> picture... Could you perhaps provide a direct link?
>
> Thanks
>
>
> Carlos Sa
> CH601-HD, plans
>
> On 1 October 2012 16:59, Mark Hubelbank <mhubel@nemon.com> wrote:
>
>> Bobby,
>> I put in ball bearings. I never liked the original setup. It did not
>> seem to be a proper bearing. There are some comments and pictures of it at
>> www.n708hu.com
>>
>>
>> On 10/01/2012 4:47 PM, BobbyPaulk@comcast.net wrote:
>>
>> List
>> Re: 601 XL B
>> I am in the middle of my conditional inspection and have found what I
>> believe to be excessive play in the rudder bearings. ( nearly 1/16" at 160
>> hours ). The 1/4" steel sleeve is turning in the aluminum and wearing it. (
>> the .187" aluminum ) . Part of the play is in the fit between the 3/16"
>> bolt and the 1/4" steel bushing. I have kept it well lubed.
>> I have John Read's drawing from 2007 showing how to add Sintered Bronze
>> Bearings ( Symmco SF812 - 4 and - 5 ) bearings. This requires boring the
>> 1/4" hole in the aluminum to 3/8". I am concerned about the edge distance
>> metal left after boring the hole to 3/8" OD.
>> I have found a 3/16" x 5/16" ( Symmco SF610 - 5 ) Sintered Bronze bearing
>> I am planning to use. This would eliminate the 1/4" OD steel sleeve and
>> require only a 5/16" hole in the .187 aluminum. This would still afford
>> more bearing surface than the Steel sleeve against the .187" aluminum.
>> If I use this set up it would only take a few thousandths out of the
>> already elongated hole in the aluminum.
>> My 2 part question is - is there a better fix available - if not is the
>> 3/16" x 5/16" Sintered bronze bearing against the 3/16" bolt strong enough
>> to stand the loads generated by the rudder?
>>
>> Bobby ( age 74 )
>> Zodiac 601 XL "B"
>> Jabiru 3300 S/N 1141
>> Sensenich 64" x 51" Prop
>> Bing Carb 260 Main & 285 Needle Jet
>> Status - Flying 160 hrs.
>>
>>
>>
>> Mark Hubelbank
> Ch601XL-B
> Jabiru 3300
> Sensenich adj prop
> Rotec TBI-40-3
> 240 Hours airframe
>
> *
>
> *
>
>
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