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Thread: Wildcat Cub

  1. #161
    mvivion's Avatar
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    Stewart,

    So called “non congealing” oil coolers contain an internal bypass so that if the oil in tthe cooler congeals, the bypass opens and returns oil to the engine, bypassing the cooler. I believe many if not most Cessna 180/185 oil coolers have that feature, but I don’t know if cub type coolers do, or whatever type cooler you’re using.

    If if they have the bypass, it makes little difference if they get cold in flight. Pre heat MIGHT be a different story, but I doubt that -30 would be a problem in either case, and the odds of seeing that temp south of the Range is pretty low, though possible.

    If if you install heat pads on them, make certain that 1000 watt Honda will sustain the load.

    MTV

  2. #162

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    Not common but it happens. Go to the cabin on a single digit Friday. Play all day Saturday as temps hover around zero. Wake up Sunday morning and see the thermometer at -45. Yippee. The things we do for fun.

    I thought non-congealing coolers have a straight tube through the core that allows warm oil to warm the body of the cooler to get the gooey oil moving. I wish Cub coolers worked like that.

    Congealing vs. Non-Congealing

    Engine oil thickens at cold temperatures, this thickening is commonly referred to as congealing. Even though it is bolted to a warm engine, it is possible for a congealing type oil cooler to remain cold enough to cause the engine oil inside it to remain cold and thick (congealed). When the engine warms up to about 160-180F the vernatherm directs oil into the oil cooler, but if there is congealed oil in the cooler, it can take a considerable amount of time for oil to begin to flow through the oil cooler.
    To avoid this situation, Non-Congealing oil coolers were designed to have a small - but continuous - amount of engine oil flowing through them at all times - even when the vernatherm is in full oil cooler by-pass mode at low oil temps. Non-Congealing oil coolers feature what is (non-technically) referred to as a "Wee-Wee Hole" (as in the picture above, right). This "Wee-Wee Hole" is a passageway running through the center of the oil cooler, through which a constant supply warm engine oil is pumped. This keeps the oil cooler - and the roughly two quarts of oil it contains, at (or near) the temperature of the engine. This way, engine oil can easily flow through the oil cooler the very instant that its flow is directed there via the vernatherm.

    A congealing or non-congealing oil cooler can be identified by the thickness of the base plate and the presence of the "wee-wee hole" as indicated in the pictures above.
    Last edited by stewartb; 12-11-2017 at 03:11 PM.
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  3. #163

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    Sneaking up on completion.


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  4. #164
    SJ's Avatar
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    Nice!
    "Often Mistaken, but Never in Doubt"
    ------------------------------------------
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  5. #165

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    80% done with 40% left to go...... at least that’s how mine went!
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  6. #166

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    Paint scheme decisions are hard. I like how it's turning out.




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    Last edited by stewartb; 01-12-2018 at 05:53 PM.

  7. #167
    Olibuilt's Avatar
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    Your cargo door makes me very jealous. Why did nobody told me about that when I was building my red Cub??? Too late for me..


    Really like your paint scheme btw.
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  8. #168
    RVBottomly's Avatar
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    Wow! I like how it's turning out, too.
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  9. #169
    WanaBNACub's Avatar
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    Looking good! Look forward to seeing it out and about soon!
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  10. #170

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    Panel labels from a printer? Pretty cool.





    https://decalprofx.com/Vertical/1_ME.../Aircraft.html

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    Last edited by stewartb; 01-13-2018 at 10:54 AM.
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  11. #171
    www.SkupTech.com mike mcs repair's Avatar
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  12. #172
    WanaBNACub's Avatar
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    Definitely an interesting paint scheme. Love that left side glass!

  13. #173

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    I like it! I can’t wait to see it in the sunshine.
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