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Thread: Kitfox 4, Rotax 912, cabin heater

  1. #1

    Default Kitfox 4, Rotax 912, cabin heater

    Hi,

    can anyone send me pictures about installation and plumbing of the cabin heater in a Kitfox 4, Rotax 912.

    Thank you in advance
    Juergen

  2. #2

    Join Date
    Nov 2017
    Location
    Smithers BC
    Posts
    32

    Default Re: Kitfox 4, Rotax 912, cabin heater

    Try this link ,several different styles of cabin heaters and lots of great info, ideas and pictures.
    http://www.avidfoxflyers.com/index.p...n-heat/&page=1

  3. #3
    Senior Member HighWing's Avatar
    Join Date
    May 2009
    Location
    Goodyear, AZ
    Posts
    1,743

    Default Re: Kitfox 4, Rotax 912, cabin heater

    There had been talk from some who were reluctant to add a heater core behind the panel because of the perceived risk of burns in the event of a failure in the coolant tubing feeding the core using the typical routing. That concern can be resolved by reversing the orientation of the heater core to have the inlet outlet fittings on the engine side of the firewall.
    It can be done, but the only consideration for me was tightening the fittings to the core without damaging the core with no room to put a typical wrench to stabilize the core side fittings. A custom wrench solved that problem. It was fitted onto the heater core mounted fitting on the cockpit side of the firewall as the tubing fittings were tightened. So far so good and heats well.
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    Lowell Fitt
    Goodyear, AZ


    My You Tube Channel

  4. #4
    Senior Member bbs428's Avatar
    Join Date
    Jan 2015
    Location
    SW Missouri
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    649

    Default Re: Kitfox 4, Rotax 912, cabin heater

    Here's how I did the heater.

    I used an aluminum heater core From Summit. Spectra # 93007, $37.95.
    Added four ball bearing computer fans from amazon - bgears 90 mm fans. $6.87 each. Made a simple
    aluminum mounting bracket from scrap 6062 and 2024.

    What I like about this setup is the connections are outside the cabin. Low = two fans. High = 4 fans. Light weight, Aprox. 3 lbs.
    It moves quite a bit of air on very little amperage and its surprisingly quiet. And of course it's very cost effective. Lol, cheap.
    The engine is not installed nor plumbed so I cannot comment on actual coolant lines to and from the engine.

    Disclaimer - This setup has not been tested. Use at your own risk.
    Also, I know nothing about proper airplane heating systems.

    Cheers, and good luck with your heater!

    Heater core4.jpgheater core1.jpgheater core fan.jpgheater core5.jpg
    Last edited by bbs428; 02-16-2019 at 01:26 PM. Reason: added content
    Somebody said that carrier pilots were the best in the world, and they must be or there wouldn't be any of them left alive. — Ernie Pyle

    Brett Butler
    Flying: 1998 Model 5 Outback, 912ul Zipper 110hp, G3x avionics, ss7 upgrades

  5. #5

    Join Date
    Aug 2018
    Location
    Hazel, ky
    Posts
    4

    Default Re: Kitfox 4, Rotax 912, cabin heater

    Cheap eBay 3 hole heater with two fans. Have to block off the radiator because it makes cooling a bit better.
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