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Thread: donuts and stabilator bearings

  1. #1

    donuts and stabilator bearings

    Dear planetom_4tc (note: most of us use real names along with our 'handles')



    Dr. Bill knows about Stab Bearings. Good info there.



    You asked about donuts:

    I did my Donuts last September - lots of pix on Beech Aero Club under

    maintenance. WELL worth doing, unless you live on a mirror-smooth ramp and runway!



    Not a member? JOIN! NOW!

    www.beechaeroclub.org



    How long and how much it should take -



    LABOR

    My guy charged me for 9.5 hrs (and he ALWAYS charges me fewer hrs than he works -

    ALWAYS! He also lets me drool over his new BMW bike, but I have to wipe up

    after!



    PARTS

    Donuts (3 sets of 8 @ 642.15 net per set from RAPID 169-380003

    JoBolts (4 ea @ 52.93 ea) NAS1669-6L7

    Centering Cable - 1 ea @ $689.95 RAPID 169-810000-47 - PRAY yours is in good shape.



    Can the work be done with the plane on jacks, or...

    No, cause you gotta pull off the gear legs and you don't want to depend on a Jack

    - so build Stands - several pix and designs shown on BAC - they are cheap enough

    to make - keep 'em handy for the Front Spar attach fitting repairs! Stan built

    the stands on his own time and with his own scrap wood!



    Does the jack stand plate interfere with the process?

    No - you need the Jack Adapters, though - about $100 each. See above about

    depending on Jacks to hold up your plane when the gear is off... You have to

    weigh down the tail, too.



    What is the recommended procedure for holding up the plane?

    Stands - beefy ones! With nice carpet! Lottsa bolts and bracing!



    So, planetom, after you join BAC, you can find out about Donuts @ special BAC

    prices from a PMA outfit - but if you don't join, you won't save several year's

    dues on your order!



    READ everything in the BAC archives about the nose wheel bearings and bushings -

    you may be doing that too!





    Bill Howard

    BeechSportBill

    N1927W 1973 Sport 150

    Beech Aero Club NorthWest Region Director

    ---- Msg sent via @bmi.net Mail v4 - http://www.bmi.net
    _______________________________________________
    BAC-Mail mailing list
    BAC-Mail@beechaeroclub.org
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  2. #2

    donuts and stabilator bearings

    Hey BSB, I haven't had a single shimmy since I bought
    peelable shims from RAPID. That was around 20 hours
    back...

    Jay

    --- Bill Howard <bhoward@bmi.net> wrote:

    > Dear planetom_4tc (note: most of us use real names
    > along with our 'handles')
    >
    > Dr. Bill knows about Stab Bearings. Good info
    > there.
    >
    > You asked about donuts:
    > I did my Donuts last September - lots of pix on
    > Beech Aero Club under
    > maintenance. WELL worth doing, unless you live on a
    > mirror-smooth ramp and runway!
    >
    > Not a member? JOIN! NOW!
    > www.beechaeroclub.org
    >
    > How long and how much it should take -
    >
    > LABOR
    > My guy charged me for 9.5 hrs (and he ALWAYS charges
    > me fewer hrs than he works -
    > ALWAYS! He also lets me drool over his new BMW
    > bike, but I have to wipe up
    > after!
    >
    > PARTS
    > Donuts (3 sets of 8 @ 642.15 net per set from RAPID
    > 169-380003
    > JoBolts (4 ea @ 52.93 ea) NAS1669-6L7
    > Centering Cable - 1 ea @ $689.95 RAPID 169-810000-47
    > - PRAY yours is in good shape.
    >
    > Can the work be done with the plane on jacks, or...
    > No, cause you gotta pull off the gear legs and you
    > don't want to depend on a Jack
    > - so build Stands - several pix and designs shown on
    > BAC - they are cheap enough
    > to make - keep 'em handy for the Front Spar attach
    > fitting repairs! Stan built
    > the stands on his own time and with his own scrap
    > wood!
    >
    > Does the jack stand plate interfere with the
    > process?
    > No - you need the Jack Adapters, though - about $100
    > each. See above about
    > depending on Jacks to hold up your plane when the
    > gear is off... You have to
    > weigh down the tail, too.
    >
    > What is the recommended procedure for holding up the
    > plane?
    > Stands - beefy ones! With nice carpet! Lottsa
    > bolts and bracing!
    >
    > So, planetom, after you join BAC, you can find out
    > about Donuts @ special BAC
    > prices from a PMA outfit - but if you don't join,
    > you won't save several year's
    > dues on your order!
    >
    > READ everything in the BAC archives about the nose
    > wheel bearings and bushings -
    > you may be doing that too!
    >
    >
    > Bill Howard
    > BeechSportBill
    > N1927W 1973 Sport 150
    > Beech Aero Club NorthWest Region Director
    > ---- Msg sent via @bmi.net Mail v4 -
    > http://www.bmi.net
    > _______________________________________________
    > BAC-Mail mailing list
    > BAC-Mail@beechaeroclub.org
    >
    http://www.beechaeroclub.org/mailman/listinfo/bac-mail
    >


    __________________________________________________
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    Tired of spam? Yahoo! Mail has the best spam protection around
    http://mail.yahoo.com
    _______________________________________________
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    BAC-Mail@beechaeroclub.org
    http://www.beechaeroclub.org/mailman/listinfo/bac-mail

  3. #3

    donuts and stabilator bearings

    Jay's note is a timely reminder. As has been published a number of times (including on BAC), excessive play in the system is what causes almost all shimmy events. The damper just helps keep it from reaching resonance and destruction. Some system designs simply use zero linkage play and high pivot friction, to eliminate a damper altogether. If you keep your nose gear and linkages snug, you are highly unlikely to experience shimmy, even with an out-of-balance tire assembly.

    ----- Original Message -----
    From: James Bruce
    To: bhoward@bmi.net ; musketeermail@yahoogroups.com ; bac-mail@beechaeroclub.org
    Sent: Monday, August 29, 2005 9:14 PM
    Subject: Re: [BAC-Mail] RE: donuts and stabilator bearings


    Hey BSB, I haven't had a single shimmy since I bought
    peelable shims from RAPID. That was around 20 hours
    back...

    Jay

    --- Bill Howard <bhoward@bmi.net> wrote:

    > Dear planetom_4tc (note: most of us use real names
    > along with our 'handles')
    >
    > Dr. Bill knows about Stab Bearings. Good info
    > there.
    >
    > You asked about donuts:
    > I did my Donuts last September - lots of pix on
    > Beech Aero Club under
    > maintenance. WELL worth doing, unless you live on a
    > mirror-smooth ramp and runway!
    >
    > Not a member? JOIN! NOW!
    > www.beechaeroclub.org
    >
    > How long and how much it should take -
    >
    > LABOR
    > My guy charged me for 9.5 hrs (and he ALWAYS charges
    > me fewer hrs than he works -
    > ALWAYS! He also lets me drool over his new BMW
    > bike, but I have to wipe up
    > after!
    >
    > PARTS
    > Donuts (3 sets of 8 @ 642.15 net per set from RAPID
    > 169-380003
    > JoBolts (4 ea @ 52.93 ea) NAS1669-6L7
    > Centering Cable - 1 ea @ $689.95 RAPID 169-810000-47
    > - PRAY yours is in good shape.
    >
    > Can the work be done with the plane on jacks, or...
    > No, cause you gotta pull off the gear legs and you
    > don't want to depend on a Jack
    > - so build Stands - several pix and designs shown on
    > BAC - they are cheap enough
    > to make - keep 'em handy for the Front Spar attach
    > fitting repairs! Stan built
    > the stands on his own time and with his own scrap
    > wood!
    >
    > Does the jack stand plate interfere with the
    > process?
    > No - you need the Jack Adapters, though - about $100
    > each. See above about
    > depending on Jacks to hold up your plane when the
    > gear is off... You have to
    > weigh down the tail, too.
    >
    > What is the recommended procedure for holding up the
    > plane?
    > Stands - beefy ones! With nice carpet! Lottsa
    > bolts and bracing!
    >
    > So, planetom, after you join BAC, you can find out
    > about Donuts @ special BAC
    > prices from a PMA outfit - but if you don't join,
    > you won't save several year's
    > dues on your order!
    >
    > READ everything in the BAC archives about the nose
    > wheel bearings and bushings -
    > you may be doing that too!
    >
    >
    > Bill Howard
    > BeechSportBill
    > N1927W 1973 Sport 150
    > Beech Aero Club NorthWest Region Director
    > ---- Msg sent via @bmi.net Mail v4 -
    > http://www.bmi.net
    > _______________________________________________
    > BAC-Mail mailing list
    > BAC-Mail@beechaeroclub.org
    >
    http://www.beechaeroclub.org/mailman/listinfo/bac-mail
    >


    __________________________________________________
    Do You Yahoo!?
    Tired of spam? Yahoo! Mail has the best spam protection around
    http://mail.yahoo.com
    _______________________________________________
    BAC-Mail mailing list
    BAC-Mail@beechaeroclub.org
    http://www.beechaeroclub.org/mailman/listinfo/bac-mail

    _______________________________________________
    BAC-Mail mailing list
    BAC-Mail@beechaeroclub.org
    http://www.beechaeroclub.org/mailman/listinfo/bac-mail

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