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Thread: AEC Donuts - From the Horse's Mouth

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  1. #1

    AEC Donuts - From the Horse's Mouth

    When I visit the AEC Website and look at the shock discs (donuts) it
    says:

    "OEM equivalent p/n 169-380003-7 ($674.26/set OEM published price).
    Replaces Raytheon/Beech p/n 169-380003-7.
    Eight pieces needed to make a set per landing gear.
    Price per set ($45.00 each x 8 = $360 per set).
    Fits all three fixed-gear legs, and the nose gear on the model 24
    retracts"

    Are these the donuts I need for my B23?

    David Snodgrass
    BAC East Central Regional Director
    Beech Be23 N6083N
    North Manchester, IN
    -----Original Message-----
    From: bac-mail-bounces@beechaeroclub.org
    [mailto:bac-mail-bounces@beechaeroclub.org] On Behalf Of cloyd vanhook
    Sent: Wednesday, February 15, 2006 12:51 PM
    To: BAC Mail
    Subject: [BAC-Mail] AEC Donuts - From the Horse's Mouth

    I spoke just now with Kamran Rouhani, the head of AEC. I had e-mailed
    him and asked him if he would confirm that he has an offer to sell his
    entire inventory of donuts to a vendor who would in turn sell them at
    10-15% less than Beech's price. If so I'd like to let our BAC members
    know.

    He said that he does have such an offer. In fact he may have more
    than one. I also asked him how many sets he'd ordered and how many he'd
    sold.

    He said his initial order was for 350 sets. [A set is eight discs,
    enough for one gear leg. Each plane uses three sets.] He said he has
    only sold about 27 sets so far and his break even point is somewhere
    around 150 sets.

    I thought the vendor might be trying to buy the donuts at a discount
    from his price. But they have offered him the price he's selling them
    for on his website. http://www.aec-inc.com/ The vendor would make his
    profit by marking them up to just under Beech's price.

    Kamran said he does not want to sell the whole inventory to another
    vendor. He'd prefer to help us. But we need to help him.

    Guys and gals this ain't about charity. If you want or need donuts
    and you don't want to pay at or near Beech's price you'd best step up
    while they're available.

    Some have asked why doesn't BAC buy the donuts. Do the math. 300
    sets @ $360 per set = $108K. That's about five times BAC's annual
    revenue.

    Cloyd Van Hook
    President, BAC


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  2. #2
    What a difference 12 years can make..... :/

    Shock Disc ( 8 )

    FAA-PMA approved mounting pad assembly (shock disc).
    OEM equivalent P/N 169-380003-7.
    Replaces Raytheon/Beech P/N 169-380003-7.
    Eight pieces needed to make a set per landing gear.
    Price per set.
    Fits all three fixed-gear legs, and the nose gear on the model 24 retracts.

    In Stock: Yes Weight: 4.25 Price: $740.00

  3. #3
    Unfortunately, it is not only the price that has changed in that time.
    Kamran’s attitude to the customer has crashed, in the opposite direction to the price!
    Mark
    In Oz


    Where I have landed a Beech

    (Plus, Australia, Canada, New Zealand, United Kingdom)

  4. #4
    Kamrahn is also notorious for high shipping charges. Still...cheaper than ordering Beechcraft parts.
    Mike Nielsen
    McCook, NE
    Sierra N9164S

  5. #5
    Quote Originally Posted by niechiro View Post
    Kamrahn is also notorious for high shipping charges. Still...cheaper than ordering Beechcraft parts.
    I foolishly paid $300 for next day shipping that arrived 2 weeks later and this Kamrahn guy literally didn't give 2 shits(excuse my language) about me spending so much and not getting the parts in the time frame that I more than over paid for.
    Kevin

    N6283G

  6. #6
    I have been dealing with the same basic question ever since I bought my Sundowner. Rap was kind enough to send me an old donut to experiment with, and I've had some luck in restoring a bit of "life" to it. I ordered a small bottle of Wintergreen oil and simmered the donut in a mixture of the oil and water for a few hours a day for several days (don't do this in the house, the smell is overwhelming.) The beginning dimension was .940 and the ending dimension was 1.050, and it has held that dimension for about a month now. I have been told that a stack of 8 totals 9", or 1.250 per donut, so I am still .075 short. But it is measurably more pliable than before, and since my donuts are not too bad yet, I'm considering attempting a renewal instead of a replacement.

    Also, I recently met an engineer with extensive experience in rubber injection. He pulled out his durometer tester and the "refreshed" donut measured at 75. He is out of the country for a few months, but he has given me 2 other contacts that I will follow up with. He is in agreement that these are $10 parts.

    I am also attaching a link to an article that allows a person to calculate durometer based on shape, area, and known compressibility. Apparently a stack of 8 donuts should compress 1" when subject to a 3000 lb load. I did some quick back of the napkin math while on the road (without the exact diameter of the donuts) and 70-80 seems about right.

    https://moldeddimensions.com/urethan...ompression.php

    Free time is all that is keeping me from pursuing this further. I will keep the club updated with whatever I find out.

    Bruce

  7. #7
    Oops, public math strikes again! The correct thickness of a new donut should be 1.125, not 1.250. I'm still .075 short of new, though.

  8. #8
    And I have a new (current series) set of AECi -1 and -7 that I will offer for research.
    Mark
    In Oz


    Where I have landed a Beech

    (Plus, Australia, Canada, New Zealand, United Kingdom)

  9. #9
    Hi Mark
    I am busy investigating manufacturing the discs. I have contact with Rap and obtained manufacturing details from him. i need a sample set of discs 1 and 7 to loan, for the manufacturers to check against their mix. It will not be destructive tests and I will pay for courier. Can you assist? Would you know what the off-take for such discs would be per year - a rough estimate?
    Best Regards
    Gert
    ZSITO

  10. #10

    Do this!

    Quote Originally Posted by Jurassic View Post
    Also, I recently met an engineer with extensive experience in rubber injection. He pulled out his durometer tester and the "refreshed" donut measured at 75. He is out of the country for a few months, but he has given me 2 other contacts that I will follow up with. He is in agreement that these are $10 parts.
    I think this is the proper approach. Get a drawing of the correct donut, with material identified (best case), or a brand new donut combined with the info in Rellihan's document above (second best case) - and pay someone to make these available. Then they are legit OPP parts, just like the trim actuator bushing that just happened.

    I bet there are enough of us here that would order a set of donuts (even if they aren't needed right now) - to cover the NRE.

    dave
    Dave Gribble
    Marion IA
    Flying the Restored Hangarmouse (Super III N3698Q)
    Building RV-9A N149DG


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