

4kg*. That’s a newborn baby. A 7 week old Labrador puppy. Your Tiga Sub4. By making 72 minute but fundamental changes to the Tiga, alterations that many would simply neglect to notice, we have made an obscenely alluring, pioneering lightweight wheelchair that is as rigid and stable as it is lightweight. Transferring, propelling, lifting, turning… All effortless with your Tiga Sub4.

*excluding wheels, cushion and any non-certified options.
By embracing marginal gains technology, the Tiga Sub4 has been created as an unparalleled ultra-lightweight wheelchair. A completely unique Sub4 upholstery, shortened axle and pin setup, specially designed froglegs super light castors and corrosion resistant titanium fasteners, the Tiga Sub4 is as smart as it is beautiful.

Only the best materials are used in your Tiga Sub4. Aluminium is famous for its strength, durability and is synonymous with lightness. The utmost best performance of your chair is ensured by only using elements produced by market leaders, alongside a staggering 19 quality checks throughout the build, from measure to handover.
Download the full Tiga Sub 4 user manual here







Do you need help with funding your RGK chair?
There are a few different ways in which you can try to get funding for your wheelchair. These choices include NHS Wheelchair Services, Access to Work and charities.
Whether you are a hobbyist building a desktop robot or an engineer prototyping a complex drivetrain, finding the perfect gear often means looking beyond off-the-shelf components. The search for a tool is usually the first step in creating custom, high-performance mechanical systems.
A robust online tool that generates precise involute tooth forms. It provides real-time visualization and exports directly to STL for 3D printing.
This article explores the best tools for generating 3D printable gear files, the different gear types available, and how to optimize your designs for successful 3D printing. The Best Gear Generator STL Tools
While primarily a 2D tool that exports SVG and DXF files, it is widely used by makers who import those shapes into Tinkercad or Inkscape to create 3D models.
A highly popular web tool specifically designed for 3D printing. It supports over 10 gear variants, including helical, spur, and double helical gears.
Based on the OpenSCAD BOSL2 library, this tool allows for extreme customization of spur, ring, crown, bevel, and worm gears. 2. Integrated CAD Plugins