Kitfox Aircraft Stick and Rudder Stein Air Grove Aircraft TCW Technologies Dynon Avionics AeroLED MGL Avionics Leading Edge Airfoils Desser CPS Parts EarthX Batteries
Page 2 of 4 FirstFirst 1234 LastLast
Results 11 to 20 of 33

Thread: switches and circuit breakers

  1. #11
    Senior Member Esser's Avatar
    Join Date
    Jul 2011
    Location
    Edmonton, AB
    Posts
    1,958

    Default Re: switches and circuit breakers

    I do have the AeroElectric but I am finding it hard to sit down and read it cover to cover with all the studies I have going on right now. Maybe I will jump ahead to that chapter for now. Thanks for your input. Does he have opinions about fuses vs. CBs?
    ------------------
    Josh Esser
    Flying SS7
    Rotax 914iS
    AirMaster Prop

    Edmonton, AB, CWL3

  2. #12
    Senior Member efwd's Avatar
    Join Date
    Jun 2015
    Location
    Yorba Linda, CA
    Posts
    1,641

    Default Re: switches and circuit breakers

    He most certainly does.
    Eddie

  3. #13
    Senior Member colospace's Avatar
    Join Date
    Oct 2009
    Location
    Littleton, CO
    Posts
    305

    Default Re: switches and circuit breakers

    Bob is a proponent of fuses and not resetting/replacing anything in-flight. Following that advise, I have mounted my fuse blocks on the back-side of my panel (with mostly fuses that illuminate when blown). We'll have to see how that works out in practice.
    - Gary
    S7 SuperSport Tri-gear
    w/Rotax 912, Oratex, Dynon
    (still building)

  4. #14
    Senior Member
    Join Date
    Jul 2011
    Location
    milwaukee wi
    Posts
    489

    Default Re: switches and circuit breakers

    I did the same, essential circuits on the nearside of the panel and nonessential on the farside.
    Attached Images Attached Images

  5. #15
    Senior Member jmodguy's Avatar
    Join Date
    Jul 2014
    Location
    Carmel, IN
    Posts
    558

    Default Re: switches and circuit breakers

    http://www.campbells.org/Airplanes/a...rsVsFuses.html

    An interesting test comparison of fuses vs CBs
    Jeff
    KF 5
    340KF

  6. #16
    Senior Member jrevens's Avatar
    Join Date
    Aug 2009
    Location
    Arvada, CO
    Posts
    1,368

    Default Re: switches and circuit breakers

    Quote Originally Posted by jmodguy View Post
    http://www.campbells.org/Airplanes/a...rsVsFuses.html

    An interesting test comparison of fuses vs CBs
    That was interesting, Jeff, but it's a pretty old article (2003) and the author specifically tested 3AG type glass fuses, rather than the more modern ATC type that are obviously much more robust. The result is that some of the negative conclusions he made about fuses don't pertain or are not relevant.
    John Evens
    Arvada, CO
    Kitfox SS7 N27JE

  7. #17
    Senior Member
    Join Date
    Jul 2011
    Location
    milwaukee wi
    Posts
    489

    Default Re: switches and circuit breakers

    Then there is the cost factor, CBs are nearly an order of magnitude more expensive and take up more room on the panel. Not that I am biased, mind you.

  8. #18
    Senior Member jiott's Avatar
    Join Date
    Jun 2010
    Location
    Portland, OR
    Posts
    2,097

    Default Re: switches and circuit breakers

    My decision to go with CB's was very simply this: I wanted something that did not require having to have spare pieces stored where they could be quickly found. I already have to carry spare batteries for the headset, emergency handheld radio and flashlight, chargers for the phone, you get the idea. Too much stuff to keep track of.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

  9. #19
    Senior Member jmodguy's Avatar
    Join Date
    Jul 2014
    Location
    Carmel, IN
    Posts
    558

    Default Re: switches and circuit breakers

    I had a discussion today with a couple peers about this. We are in the wiring and interconnect business and between the 3 of us there was about 87 years of experience and best practice discussed for close to 30 minutes. Education levels included EET, EE, and Masters in Physics. We discussed test methods for both fuses and circuit breakers, systems installation best practices and what ifs. We also discussed things like standard CB in flight reset procedures, i.e. only once, and fuse practicality with the risk of FOD etc. We could not come up with a reason to use fuses over CBs for any reason other than cost.
    Granted fuses are cheap and CBs are pricey at @ $20 each. If fuses are a better way then why do aircraft manufacturers from Cessna to Boeing use CBs instead of fuses?
    Jeff
    KF 5
    340KF

  10. #20
    Senior Member efwd's Avatar
    Join Date
    Jun 2015
    Location
    Yorba Linda, CA
    Posts
    1,641

    Default Re: switches and circuit breakers

    My guess would be that Boeing and others will just pass the cost of those pricey objects on to us anyway.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •