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Thread: teflon hoses.

  1. #1
    r.pierson at sbcglobal.ne
    Guest

    teflon hoses.

    For those who have replaced there hoses lately, did anyone replace with
    Teflon type? I understand that our aircraft needs a field approval. My
    old hoses which are ten years old, and the last five years I have always
    asked my inspectors if they felt they should be changed, they checked all
    the hoses and told me that they felt very pliable, well I am not going to
    be second guessing their condition next annual, I want the piece of mind, so
    I want to change all hoses to the Teflon which understand has a longer shelf
    life as well as expectancy on the plane. I had all my old hoses when I
    installed new had them all fire sleeved which I think has kept them from any
    direct heat, but also unable to look at all the hoses.

    By the way after spending time removing my mag and a few other accessories
    to verify where a noise was coming from, it turned out to be the vacuum
    pump, a bushing was turning in the race creating a low howl during low RPM
    and increase to a loud squealing sound when increasing the rpm. The pump
    only had five hundred hours on it, it was a sigmatek, the vanes looked fine,
    but I ended up replacing with a Rapco pump.

    Rod






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  2. #2
    mike at rellihan.com
    Guest

    teflon hoses.

    Rod, are you a BAC member now? If you do a BAC search on "Teflon hoses" (without the quotes), you'll find an extensive FAQ that addresses this topic. I like the Teflon hoses, especially with the integral extruded firesleeving, and think that they are worth the relatively small extra cost. If you are buying a complete engine compartment set, and can send in your old hoses for matching, I might be able to get you a small discount. Precision Hose Technologies can furnish sets based on the Beech standard hoses, if you are certain that everything is original; I just prefer having the originals matched to make sure.

    ----- Original Message -----
    From: Rod
    To: 'Mike Rellihan' ; musketeermail@yahoogroups.com ; 'ke4oh' ; 'BAC Mail'
    Sent: Tuesday, August 16, 2005 1:05 AM
    Subject: teflon hoses.


    For those who have replaced there hoses lately, did anyone replace with
    Teflon type? I understand that our aircraft needs a field approval. My
    old hoses which are ten years old, and the last five years I have always
    asked my inspectors if they felt they should be changed, they checked all
    the hoses and told me that they felt very pliable, well I am not going to
    be second guessing their condition next annual, I want the piece of mind, so
    I want to change all hoses to the Teflon which understand has a longer shelf
    life as well as expectancy on the plane. I had all my old hoses when I
    installed new had them all fire sleeved which I think has kept them from any
    direct heat, but also unable to look at all the hoses.

    By the way after spending time removing my mag and a few other accessories
    to verify where a noise was coming from, it turned out to be the vacuum
    pump, a bushing was turning in the race creating a low howl during low RPM
    and increase to a loud squealing sound when increasing the rpm. The pump
    only had five hundred hours on it, it was a sigmatek, the vanes looked fine,
    but I ended up replacing with a Rapco pump.

    Rod
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    BAC-Mail mailing list
    BAC-Mail@beechaeroclub.org
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