MN Kitfox 2

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About MN Kitfox 2

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  • Birthday 08/23/1973

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  • Gender Male
  • Location Nevis, MN

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MN Kitfox 2's Activity

  1. MN Kitfox 2 added a post in a topic YAMAHA Genesis (RX-1) install in Kitfox 5   

    I looked into the wire loom in detail.  
    Teal has full (one page!) instructions and has made it super simple:
    From Teals harness:  Hook up batt positive, ground engine to airframe (my airframe is common ground, I'll run a heavy wire to it from the starter mounting bolt on motor.  Hook up the ignition supply wire (I'm going to two switches for redundancy, one to hot batt, one to engine alternator/magneto).  Hook up starter solenoid wire to the start button in plane.
    That's it!  Teal also has one wire ready for the tach and the rest are plug and play connectors to the small weatherproof ECU and VR boxes, and also to the spark plug caps (with built in ign coil on each)
    I will add a fused switch to the electric carb heaters installed in the carbs on the yammy. This bird will fly all winter here in N Minnesota and the elect carb heat helps supplement the standard carb heat (heated by engine coolant) 
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  2. MN Kitfox 2 added a post in a topic YAMAHA Genesis (RX-1) install in Kitfox 5   

    Roughly lined up. .. 


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  3. MN Kitfox 2 added a post in a topic YAMAHA Genesis (RX-1) install in Kitfox 5   

    Mine is a carbureted (RX)-1 4cyl.  Teal Jenkins  (skytrax) sells the c box adapter and wire loom (which is very simple for that motor).   I believe he is working on an  adaptation for the EFI 4 cyl (Apex) as well, which requires a MUCH more complicated wire loom mod.
    More info on the RX-1:
    http://www.avidfoxflyers.com/index.php?/topic/4138-yamaha-rx1-engines/
     
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  4. MN Kitfox 2 added a post in a topic YAMAHA Genesis (RX-1) install in Kitfox 5   

    The easy part.
    (Decided that the soob mount wasn't even close to what I'd need for the yammy)
    Pic 2 shows tailwheel spring support.  With the motor off she'll be a wee bit tail heavy!
    Pic 3 is my quick little (sorry ass) attempt for a prop flange locator jig. (Bolted to firewall)



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  5. MN Kitfox 2 added a post in a topic YAMAHA Genesis (RX-1) install in Kitfox 5   

    Oh yeah!  You're speaking my language.That's the kind of technology I have to work with here!  

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  6. MN Kitfox 2 added a post in a topic YAMAHA Genesis (RX-1) install in Kitfox 5   

    Thanks guys.  I like the rolling table idea.  That'll make life alot easier!
    And shoot, I shoulda started this in tech tasks or the engines forum.  Can a moderator fix that or should I delete and repost?
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  7. MN Kitfox 2 added a post in a topic Annual Condition Inspection (Engine and Airframe Separate?)   

    As far as verbage, here it is straight out of mt operating limitaions (that I  got from the faa document request for my plane)
    Note lines 17 and 18:
     

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  8. MN Kitfox 2 added a topic in 4-strokes   

    YAMAHA Genesis (RX-1) install in Kitfox 5
    Ok guys.  Looking for help and input here!  
    This will be a long and drawn out project and I'd like to lay out my plan of attack for ya'll to review from time to time.  It's a such great group here and I will be thankful and greatful for everyone's help.... please don't hold back if you have an idea or advice!!
    First a little about me so you know what you're up against!
    Not an EAB builder.  Reasonably decent mechanic, but not an experienced fabricator.  Aero Mfg. Engineering B.S. degree which helps a little, but mostly put emphasis on the "B.S." since I never actually worked as an engineer. Also keep in mind that I am interested in a functional and safely done repower and install here...   but this is NOT going to be a "show plane", so looks, beauty, and a perfectly "clean" install are low on the priority list.
    So I got my bird crammed into my garage yesterday, pulled the prop of the subaru and am getting ready to dig in.   Here's my initial game plan:
    1. Take lots of pics of the sooby and measure up location of prop flange to hopefully eliminate too much cowl rework in the end.
    2. Pull the motor and take a look at the soob motor mount.  I was considering building off it if possible to simplify the fabrication process.  Any concerns with that?
    3. Get things lined up, plan for airbox and exhaust, then tack together the new mount.  I am a novice welder and own only a cheapo wire feed welder.  I'd plan to emulate what others have already done and fishmouth the thing together and just tack it, then send it off to a pro to TIG it up and powdercoat.  (I'd be glad to hire out the entire mount fabrication but so far I'm the first guy I know of to put a Yamaha in a Kitfox, so it would presumably be hard for someone else to build me a mount without a KF5 firewall jig and a RX-1 motor laying around)  Any ideas / thoughts? 


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  9. MN Kitfox 2 added a post in a topic Annual Condition Inspection (Engine and Airframe Separate?)   

    Wish I could reference it, but I researched the same question and remember learning that an engine log (or propeller for that matter) is not required, nor is a specific statement regarding the engine part of the CI signoff verbage (verbage spelled out in my op lims)
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  10. MN Kitfox 2 added a post in a topic Melted piston from overheat due to coolant loss- repair plan?   

    Seems like the people I get along with best are "just a little rough around the edges".
    Ones that are smooth around the edges make me start to squint my eyes and sniff for the "politician smell"!

     
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  11. MN Kitfox 2 added a post in a topic Break in high temps   

    That's what I ended up doing with my 532: tstat out in summer, in for the winter.  It had a somewhat marginal cooling system that you had to keep an eye on.
    Not sure everyone would agree on doing it that way since it would run a broader temp range (150-180), but in the summer it helped me know when the system was nearing capacity.  When it crept up I  knew it needed some airflow soon.  With the tstat in it would hold steady but you wouldn't get much warning when it reached cooling capacity and spiked up quickly. 
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  12. MN Kitfox 2 added a post in a topic Melted piston from overheat due to coolant loss- repair plan?   

    I'm guessing the rebuilder went through the rave valves right?
    Everyone can make a mistake.... but hopefully he stands behind his work and takes care of you on this deal!
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  13. MN Kitfox 2 added a post in a topic Melted piston from overheat due to coolant loss- repair plan?   

    Wow.  Guess they build them differently in the sleds.  Sure seems weird that they would make them more failproof in the snowmo engines.  The the ones I've worked with have a forged shoulder that stops travel (see pic below).
    Man, I sure wish I could buy ya a beer, and I really do feel your pain.  Especially with a new motor like that...  crap.
    But if the rave did it, then that helps a little i suppose.  You know that you found the problem and can get it right.
     

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  14. MN Kitfox 2 added a post in a topic Melted piston from overheat due to coolant loss- repair plan?   

    There is no way the rave valve can contact the piston... unless the wrong rave parts are installed.  I've had quite a few of these apart and am really sure about this.  The rave spring pushes it fully down where it seats in it's groove.
    I know the rave looks to be really close to the piston but it does not and can not protrude into the cyl.
    Oh man, yeah that looks like you had a bunch of crunching around there.  Maybe if it were a sled I'd take a chance, but if were mine, in a plane, I'd want to look in the case for debris... 
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  15. MN Kitfox 2 added a post in a topic Break in high temps   

    I have had sleds do that after a coolant refill.  It ended up bieng an air pocket somewhere in the cooling system that slowed flow.  I had to bleed the high points in the system.
    And I like jim's idea... get the guage calibrated with the sender.  
    Also consider trying with the thermostat out.
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