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Thread: Vernatherm

  1. #1
    Senior Member carlconti's Avatar
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    Default Vernatherm

    I finally installed the Vernatherm I had bought a while ago. What a difference! The engine now warms up to the green arc on the taxi. After take off it warms to about 180 degrees by the time I am at 1000 agl and stays there.

  2. #2
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    Default Re: Vernatherm

    Yep-
    makes all the difference in the world.
    I installed mine two years ago.
    Bill

  3. #3
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    Default Re: Vernatherm

    Does it keep it around 180 in both winter or summer temps?

    Jon
    # 293 soon
    Quote Originally Posted by seastar View Post
    Yep-
    makes all the difference in the world.
    I installed mine two years ago.
    Bill

  4. #4
    Member davidmorris's Avatar
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    Default Re: Vernatherm

    I had a Vernatherm installed today. I didn't get a chance to fly it but hope to tomorrow. The high temp is forecast to be in the mid to upper 40's. I'll report the results.

    David Morris
    #275

  5. #5
    Senior Member Steve Y's Avatar
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    Default Re: Vernatherm

    Quote Originally Posted by txcub View Post
    Does it keep it around 180 in both winter or summer temps?

    Jon
    # 293 soon
    Winter 26F (Big Bear, CA.)= Descending @ 1,700 rpm. Oil=177F.
    Climbing out at 90mph, 2,500 rpm. Oil=180F

    Summer 100F ( Borego Springs, CA.)= Descending @ 1,700 rpm. Oil=178F
    Climbing out at 90 mph, 2,500 rpm. Oil=185F


    Cruise 8,500, 65F= level @ 2,200-2,300 rpm. 100mph. Oil=178-180F. Oil pressure Middle of the green.

    Seems to work Dandy!
    Last edited by Steve Y; 10-23-2013 at 09:17 PM.

  6. #6
    Senior Member carlconti's Avatar
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    Default Re: Vernatherm

    Quote Originally Posted by txcub View Post
    Does it keep it around 180 in both winter or summer temps?

    Jon
    # 293 soon
    Only just installed it, so I don't have all seasons data yet. I'm in Florida, so the results so far would have to be called summer. The other replies sure look good though.

    Carl

  7. #7
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    Default Re: Vernatherm

    That's great. Glad I ordered it.

    Jon

    Quote Originally Posted by Steve Y View Post
    Winter 26F (Big Bear, CA.)= Descending @ 1,700 rpm. Oil=177F.
    Climbing out at 90mph, 2,500 rpm. Oil=180F

    Summer 100F ( Borego Springs, CA.)= Descending @ 1,700 rpm. Oil=178F
    Climbing out at 90 mph, 2,500 rpm. Oil=185F


    Cruise 8,500, 65F= level @ 2,200-2,300 rpm. 100mph. Oil=178-180F. Oil pressure Middle of the green.

    Seems to work Dandy!

  8. #8
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    Default Re: Vernatherm

    I installed the vernatherm earlier this summer. Most of my flights recently have been in 35/45 F air. After 5 minutes, the indicated oil temp is 175/180 and oil pressure is a touch below 70.
    A note on installation, if you have a BC700 filter adapter: I had to grind and cut a box end wrench ( to fashion a very narrow wall tubing wrench) inorder to make it fit in the limited clearance around the oil temp probe adapter. Also, the plug in the filter adapter was so tight that I had to fashion a mounting plate, hold it in a vise, and then use a 6 point socket with a bar and soft blow hammer to free it. Might have just been an unusual adapter. Jake

  9. #9
    Senior Member Pete D's Avatar
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    Default Re: Vernatherm

    Quote Originally Posted by 1473C View Post
    A note on installation, if you have a BC700 filter adapter: I had to grind and cut a box end wrench ( to fashion a very narrow wall tubing wrench) inorder to make it fit in the limited clearance around the oil temp probe adapter. Also, the plug in the filter adapter was so tight that I had to fashion a mounting plate, hold it in a vise, and then use a 6 point socket with a bar and soft blow hammer to free it. Might have just been an unusual adapter. Jake

    Look at the installation instructions here:

    http://www.cubcraftersforums.com/sho...allation/page2

    Recommendation is to remove the oil temp probe for clearance.

    Also, if you loosen the plug before you remove the housing from the engine then you won't have to put it in a vice. I'm impressed you were able to get it out, when I was learning how to do it I ended up bolting the housing back on the engine to break the plug loose.

    The vernatherm (and the plug before it) will be tight-torque is 300 inch pounds.
    Pete Dougherty
    R & D Shop Manager
    Cub Crafters Inc

  10. #10
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    Default Re: Vernatherm

    Pete,
    It is not like me, but I did read the instructions. Here is the complication. Because of the limited visibility due to the close clearance to the firewall, I first put a wrench on the oil temp prob nut and loosened it according to the instructions. It immediately broke free, so I continued to turn it. All of a sudden, I heard escaping gas and knew right away from experience that I had just ruined a $400 dollar guage. The adapter had broken free instead of the probe, so I was twisting the line, which takes no effort, until it failed.
    Everytime I have cost myself money or hurt an airplane over 45 years time, I have resolved not to repeat the debacle. There is now a special wrench in my box with a tag that says: " Use this to hold the oil temp adapter before tuning probe.
    As far as loosening the plug with the adapter in place, maybe it worked for you, but my forces were so high, and given the fact that my 6 point sockets would not clear the firewall, I opted for the other method. All the best. Jake

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