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

  • 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!!

  • Authentic Immersion continued

    After printing the Spade Grips for me and my buddy, I set about printing the Trim Wheels and Throttle Quadrant. I wanted to add it to my rig so needed to use my own mounting system and along the way designed my own combined Trimhub, a combination of the Authentikit universal hub and the trim wheels mounted all together and added some switches.

    Really enjoyed making this and I am really immersed when flying using the kit. So much so, I have just started printing the Chassis lever to add to my rig on the right hand side, I'll have to design and print a different mounting system, but Phil is great with supplying some of the file in different formats to help.

    I have all the printed parts I need now to upgrade to the v3 with the damper for both me and my bud, so I foresee an evening in the near future disassembling and reassembling the throttle for even deeper immersion.

    I've been using LeoBodnar control boards (the heart of the USB controller used in Authentikt) for the past 11 years in my own sim kits for sim racing so am vary familiar with the capabilites. The trim software seems a little complex for the Authentikit set up, but I'm sure it will develop over time in to a one click install, set and forget.

    I fly all the time and when flying the Spit MkIX in MSFS, DSC and IL2, I would not consider using any other controllers.

  • Fantastic Spitfire Mk IX Throttle and Trim Wheels

    The Spitfire Mk IX throttle quadrant and trim wheels form Addon Kit B.

    When combined with the spade grip form Starter Kit A , you basically have the whole left side wall of the real cockpit, well that's certainly how it feels in VR!!

    The Throttle quadrant gives you fine, precise control over the RPM and throttle, there is a built in detent for Max Boost/WEP and the handle has the all important bomb release button.

    Having the trim wheels positioned correctly just adds that extra level of immersion in VR and allows you to keep the Spit perfectly trimmed.

    All of the components use the Authentikit quick release mounting system, so as long as you have something to fix the mounting plates to, you can adapt your setup easily and quickly.

    Again, as with the Spade Grip, I can honestly say that for flying the Spitfire, I think the throttle and trim wheels are as good as it gets!! I could not go back to using "normal" controls and have setup my rig specifically to allow me to change over to the Authentikit controls when needed.

    Reply from Administrator ():

    Nice mod of the mounting system to adapt it to your rig. We'll need to get some throttle v3 parts to you - which would make the throttle slightly better than "as good as it gets" :)