SRT Gearbox V10

Discover the best H-box for sim racing! The icing on the cake: it’s a simple and accessible DIY project!

Summary

1) Presentation

2) How to start

3) Shopping list

4) 3D files

5) Assembly

6) Arduino Code

7) Wiring

8) Mods

1 )Presentation :

The best gearbox in the world:

• 6-speed H-box + reverse gear
• Sequential (we go from one to the other in 3 seconds)
• Clutch mode (optional): if you don’t press the clutch pedal, the gearbox stays locked (only in H mode)
• Multiple attachment points (from underneath and from the side)
• Adjustable front-rear and left-right feeling
• Adapter to mount a hand brake (P1)
• Possibility to connect pedals to it

The documentation of V10 is available on this page.

All the documentation is available on this page. Do not hesitate to ask for help on the Discord!

Review by Laurence Dusoswa :

2) How to start

3) Shopping list

The shopping list is available here.

4) 3D files

The 3D files are available on this page. There is only one version of Body2, which is designed to support the eClutch mod. The eClutch mod and its shopping list are documented separately, see 8) The Mods

The body1 is available in two versions : one is compatible with the handbrake mod.

Each file contains a printing instruction in the form xx-xx. The first number is the precision, the second the filling. For example 02-30 means accuracy of 0.2 and filling at 30%. It is also useful to double the thickness of the walls.

iron means you have to enable ironing.

The word “support” indicates that supports are required… The number that follows is the overhang angle to be entered in Cura.

I also recommend to activate the adhesion to avoid warping (part that comes off the support).

All the parts are in the ideal orientation for printing.

You will also find a step file which will allow you to integrate the cylinders in your CAD.

If you don’t own a 3D printer, you can order the 3D printed kit on the store.

5) Assembly

Once all the parts are printed, you can start the assembly by following this tutorial. (english version will be uploaded later)

6) Arduino code

The latest firmware is available on this page.

7) Wiring

It’s not essential, but here is the detailled wiring of the Arduino Micro :

8) The mods

Each mod has its own dedicated documentation. It is recommended to start by making a box without mods before adding mods.

• The eClutch mod : https://lebois-racing.com/mod-srt-eclutch-for-the-srt-gearbox-v10
• The button plate mod : https://lebois-racing.com/mod-button-plate-for-srt-gearbox
• The gear indicator mod : https://lebois-racing.com/mod-gear-led-indicator
• The button box mod : https://lebois-racing.com/mod-button-box
• The Joystick mod : https://lebois-racing.com/srt-gearbox-joystick-mod
• The handbrake : https://lebois-racing.com/handbrake-mod
• The RHD mod : https://lebois-racing.com/rhd-mod-for-the-srt-gearbox-v9-1/

You can also find all the mods developed by the community in remix of the project on Thingiverse.