Spitfire MkIX Add On Kit B 3.0.1

This add on kit includes not only the Spitfire MkIX throttle quadrant, elevator trim wheel and rudder trim wheel but also the connectors to the universal hub as well as the rig extension pole system to mount the flight controls just where you want them.


The "Add-On Kit" designation means that it isn't just the flight controls that are included with this download. In addition you get the mounting system to the primary rig (monitor stand) and other parts/information needed to connect these controls to the Universal Hub configuration as per the Spitfire MkIX Starter Kit A.

This download contains everything you need to build the throttle quadrant, elevator trim wheel and rudder trim wheel. The following items are included.

  1. All 3D printable CAD files (in STL or 3MF) format required to print the parts for the throttle quadrant and trim wheels as well as the rig extension
  2. Wiring diagrams - for controls and updates to the universal hub to support these extra controls
  3. Bill of Materials - other hardware parts (bearings, screws etc) you will need
  4. Assembly steps
  5. An inventory of the screws so you can cross check which screw size is used where

The controls are mounted using quick release plates to Rig Extension A which is fixed to your inverted monitor stand as per the photo. See The Rig.

Here is how it all looks with the flight stick in place as well. This image was kindly provided by AuldMutt from our Discord server.

Assembly Videos

Here are the main assembly videos, but see the download documentation for other supporting videos. If you have questions specific to this flight control or want any clarification about an assembly step please use the Comments section of this download.

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  • Version 3.0.1

    Very minor changes to documentation only. See changes.txt

  • Version 3.0

    1. Creative Commons licence changed
      • from: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
      • to: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
    2. Added hydraulic damping to throttle lever
    3. Upgraded bomb release button with new clinch button design
    4. Upgraded WEP detent with ball spring detent system
    5. Strengthened prop/RPM lever with extended MagHall peg
    6. Added more clearance between prop/RPM friction disc and prop MagHall
    7. Included printable felt templates 1 to 4
    8. Included batch print pre-orientated 3MF files
    9. List of 14 new files for reprinting if coming from 2.2 (if coming from 1.0 you should reprint all throttle/aircsrew maghall components):
      1. Airscrew MagHall Peg.3mf
      2. Clinch Body.3mf
      3. Clinch Button.3mf
      4. Clinch Button Cap.3mf
      5. Felt Template I.3mf
      6. Felt Template II.3mf
      7. Felt Template III.3mf
      8. Felt Template IV.3mf
      9. Front Panel.3mf
      10. MagHall 6803HXF Cap.3mf
      11. Prop Friction Disc.3mf
      12. Separator plate.3mf
      13. Throttle Lever.3mf
      14. Throttle screw Cap.3mf (I think this got changed but not 100% sure ! )
  • Version 2.2

  • It would be great to have a new assembly instructions PDF with all the old/new parts for the shown, I'm having a hard time visualizing them to keep track and packing them. A list with pictures would suffice. Thanks :)

  • Hello, great stuff as always !!

    Can you please tell me which parts are different from V1 to V3 ? Maybe an extra list ?

    I love the damper . Feels great in the chassis lever !

    Thank you ,


  • Outstanding product


    I just finished assembling and testing the quadrant and the wheels.

    Before this project I didn't own or had ever used a 3D printer, but i have been an enthusiast flight simmer for a while now, playing in VR

    The idea is very enticing to me: build you own flight controls and use them in vr in your sim, but the concept is genius. By leveraging the power of 3D printing and of a whole enthusiastic and engaged community, I can see Authentikit delivering on its mission of creating and delivering products that are desirable, easy to produce, easy to assemble and easy to use, and by building the business as a freeware model thinking about how to make it possible to implement each project, how to standardize and modularize, involve a whole community that will provide ideas, designs and feedback.

    This whole thing is genius. Thank you, Phil, for what you have done so far. I look forward to having shelfs full of Authentikit controls and having a great time making them and using them.

    This is truly something that exceeded all my expectations, and 5 starts is just about right.

    Reply from Administrator ():

    That is a very generous and kind review. Many many thanks!

  • Another great addition

    This is my 3rd build now. Still very impressed. I would say the throttle has need the most gentle fettling so far out of the stick, trims and now throttle. That said, a small nail file here and there is all that is needed to get a really good fit. I have found using a small piece of insulating tape on the back of the MagHalls helps ensure that the wires and Hall Sensor legs stay in place. But overall 10/10 again :thumbup:

  • Great design and straightforward prints. Great at work!

    Great design and straightforward prints. Great at work once put together.

  • It’s incredible that we can download a file, print out parts and wire them up as a custom game controller. This project has inspired so much joy and is the best example of open source hardware I’ve come across.

    I recently upgraded my version 1 build of the throttle to version 3. The hydraulic damping is a must! Simply incredible. I just wish it was built in to the mag hall housing itself so that it could be used on all three levers.

    I’m using 3/4” iron pipe as a mounting system and it works fantastic. Thanks so much for designing this!

  • Conversion from 2.2 to 3.0 was very straightforward and well documented in the new video

    The title says it all. I just received the conversion components from SimKitSupplies and had printed the modified parts while waiting. Disassembly of the 2.2 version and re-assembly with 3.0 modified parts was really easy. The video was clear in what has changed and what to do.

    Now back to flying!!