marcusofcotton

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About marcusofcotton

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    Advanced Member

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  • Location NE Minnesota

marcusofcotton's Activity

  1. marcusofcotton added a post in a topic Clogged jets   

    Yikes, what is it from? What does the filter/gascolator look like?
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  2. marcusofcotton added a post in a topic Black Max Brakes   

    I really like the clear tubing reservoir/filler idea!
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  3. marcusofcotton added a post in a topic Fabricating a cowl   

    Thanks for posting the process, nice. And you now have wine corks for the next project as well!
    How did the weight and, especially, balance come out?
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  4. marcusofcotton added a topic in For Sale and wanted, you got it, I want it   

    For Sale Powerfin 3 blade 68" prop Rotax
    Powerfin 68" 3 blade prop for Rotax, new set of balanced blades and hub like new. Right hand rotation, with bolts. Save 60% off new, $475
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    • 96 views
  5. marcusofcotton added a post in a topic Manu's Avid C   

    Exciting times Manu! Congratulations!
    It sounds like you have too much propeller for it, full throttle static RPMs should be about 6,200.
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  6. marcusofcotton added a post in a topic FNG Here   

    Might try a gentle touch with a heat gun first. Welcome and enjoy!
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  7. marcusofcotton added a post in a topic Vortex Generators   

    VGs sure helped my Heavy Hauler wings. First installed under horizontal stab, yep good improvement there. Later did the wing, no numbers but at my 1000' strip with trees around the pucker factor was definitely improved.
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  8. marcusofcotton added a post in a topic Getting close for an engine choice   

    That's the one, Jabiru powered. They probably stole the pic from Mark Mendick's site, I had sent him some when he was trying to get going.
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  9. marcusofcotton added a post in a topic Getting close for an engine choice   

    Interesting, just glancing at ULPower website and see my Avid MkIV pictured. Wonder if they want to give me an engine for it? Ha!
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  10. marcusofcotton added a post in a topic Getting started/setup for Welding?   

    X2 with the last two posts!
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  11. marcusofcotton added a post in a topic 582 winter operations   

    Just reviewing a bit and feel I should respond to the portion of your reply that I underlined. Beware, cold seizures definitely do happen on these engines (gray head or blue head) with however many thermostats one might or might not have!
    Congrats on securing the airport spot!
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  12. marcusofcotton added a post in a topic 582 winter operations   

    John, I didn't disagree with you on the primary design purpose of the hole. I'm glad you know the coolant temperature differential spec, I wish you well in achieving it and cabin heat. Let us know how it works out for you for the benefit of all of us and those who follow. Don't forget the sage advise also regarding holding accessories out at shoulder height and letting go of them to see if they go up or down.
    Blue skies and happy flying.
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  13. marcusofcotton added a post in a topic 582 winter operations   

    Jackson Ski Plane 2018 McGregor, MN. Those rear skis are slowly getting closer to becoming Avid skis. I'll add that the Jabiru heat muff while being modest in the Avid is definitely better than the heat in the trike was.
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  14. marcusofcotton added a post in a topic 582 winter operations   

     
     
     
    The hole also lets a small amount of coolant to flow  (my factory original hole was smaller iirc). I no longer have all my Rotax manuals but I recall a minimum coolant return to engine temperature specification. Give it serious respect. In the picture below you can barely see behind my head a pink 2" wide velcro strap wrapped around my radiator. I had two of these I'd install depending on ambient temp as needed to keep radiator temp up.
    My heater left a little to be desired when below 0F, no carbonmonoxide worries though.
     

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  15. marcusofcotton added a post in a topic 582 winter operations   

    I believe you are setting yourself up for a cold seizure. You need to block off the front of the radiator like Lenny says and forget about shutting off flow to it with a separate thermostat. If the radiator liquid gets too cold, then when you go for more power the thermostat will sense heat at the head and open. When it opens it will allow for a cold slug of coolant from your radiator to hit the bottom of the engine and there is your cold seizure. And yes, you do want the 160 degree thermostat for sure.
     
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