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Thread: ea81 for model 3?

  1. #1

    Default ea81 for model 3?

    Hello wondering if i can mount an ea81 in my model 3 i have access to a nsi ea81 fwf kit,has anyone flown the 3 with this arrangement?also the kit is for a mod 4 classic,but i think the mount from the 3 to the 4 are the same?thanks,chris

  2. #2
    Senior Member Mnflyer's Avatar
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    Default Re: ea81 for model 3?

    A very heavy engine for a model 3 too much wt up front.
    GB
    Flying a HKS Kitfox III and a Champ

  3. #3

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    Default Re: ea81 for model 3?

    I know someone with a Model 3, that I think has that engine. Let me check.
    Dwight B. Van Zanen
    Maple Valley, WA and
    West Columbia, SC
    PP/ASEL/IA
    Avid Mk 4 Aerobat

  4. #4
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    Default Re: ea81 for model 3?

    avoid the tempation. I had one in my model IV and it is to heavey. Put the 912s in and double performance. That was my experience.

  5. #5
    SkyDave's Avatar
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    Default Re: ea81 for model 3?

    I have a Kitfox 3 with E81 built by Jack Bally featured in EAA 1993 mag. Great aircraft.
    Last edited by SkyDave; 02-09-2012 at 08:38 AM.

  6. #6
    SkyDave's Avatar
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    Default Re: ea81 for model 3?

    PS 100 pounds heavy than a 582 ???? what the 582 weight....62 pounds

  7. #7
    Senior Member Peteohms's Avatar
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    Default Re: ea81 for model 3?

    That just about makes your III a single place doesn't it? My III with 912 is just barely a 2 place for slightly larger folks.
    Pete
    Leander, TX
    Model III SN 1000
    912
    Grove

  8. #8
    SkyDave's Avatar
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    Default Re: ea81 for model 3?

    what do you weight 300 # ?aircraft @ 672# pilot @ 160# passenger @ 140 # can carry up to 26 gal of fuel but why fuel burn around 3.5 gph so to reach max weight add 13 gallons of gas (78#) or 3.7 hrs of flight... total weight 1050#... plane works great for me ...it is what it is ....personal plane to fit my needs cheap to fly...maintenance... park in my garage..and fun to fly
    Last edited by SkyDave; 02-09-2012 at 08:38 AM.

  9. #9

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    Default Re: ea81 for model 3?

    Glad you joined in. You gave the weight, but perhaps you could provide some performance numbers too. I think some of the concerns about weight are if the kit had 950 gross on the data plate instead of 1050. I think it is the Kitfox II that is 950 though. As a point if contrast, my Avid is empty weight 560 including the BRS; also with a gross of 1050. I fly with my son fairly often, and together we weigh about 425. Nice you and your passenger are light enough to make it work for you. My son and I should lose about 50 pounds between us.
    Last edited by DBVZ; 02-09-2012 at 11:03 AM.
    Dwight B. Van Zanen
    Maple Valley, WA and
    West Columbia, SC
    PP/ASEL/IA
    Avid Mk 4 Aerobat

  10. #10
    Senior Member
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    Default Re: ea81 for model 3?

    I hear the EA-81 is popular with the Avid crowd, and they seem to like it's power/climb well enough, so would it not work on a Kitfox-3 or 4 just as well?

    I think I saw a typcial install weight of about 205 lbs on a previous post, kinda on high side alright, but you might get up to 85HP out of it (at the prop).

    Roger

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