STOAD 01 / working prototype
Leg extension. A new angle.
A leg extension with an adjustable backrest and a selector-pin weight stack. A working prototype for seated and reclined setups in one station.
26 seconds from an actual demonstration. Reclined and more upright setups, with closer views of the adjustment beside the seat. No audio.
About the recording and its evidence
The clip shows visible use and adjustment of the prototype. It does not measure hip/knee angles, capacity or lifetime. The recording date and prototype version are not published. The description was checked against the clip on 5 September 2026.
Open the original clipTake control in 3D.
Rotate the model, choose a camera angle and try the four adjustments.
Drag to rotate · Zoom for detailsNew angle. Fixed seat.
Change the backrest angle and explore the hip position. The seat pad stays fixed.
The movements illustrate the functions. Final mechanical limits have not been verified.
Inside the movement
Every adjustment has a purpose.
See the details. Understand the difference. Find your setup.
A different starting position
New angle. Fixed seat.
The backrest moves from seated to reclined. The seat cushion keeps its angle while the backrest moves.
Try the adjustments in 3D
Two independent adjustments
Your body. Your position.
The thigh carriage and lower-leg roller adjust independently. Explore their full travel and try the settings in 3D.
Try the adjustments in 3D
It starts with the starting position
Deep start. Big movement.
The roller starts well beneath the seat. The acute starting angle defines the beginning of the movement — follow the arm from this deep position through its full path.
Try the adjustments in 3D
STOAD 01 / Details
See the whole picture.
Three views of the same construction. Get to know the machine before a walkthrough.
Front profile
Access side and contact points.
Rear profile
Backrest linkage, frame and weight stack.
From above
An overview of shape and access.
3D visualisations. Final dimensions and production details are confirmed during a walkthrough.
Product status · 5 September 2026
What we know about 01.
STOAD 01 is a working prototype. This is what has been demonstrated, what we are developing towards and what needs documentation before a sale.
Demonstrated means a function has been shown – not that every property has been measured. A development target is an intended direction. Not confirmed means the information needs clarification before a purchasing decision.
- Seated and reclined setups
- Demonstrated on the prototype
An adjustable backrest is demonstrated in the prototype video. Final backrest angles and ergonomic settings must be measured on the production version.
Watch the prototype video- 180 kg weight stack
- Development target
Development is based on a 180 kg weight stack. Final capacity, load testing and weight increments have not been confirmed.
- Resistance profile
- Development target
The aim is a resistance curve that follows the quadriceps strength profile through the movement. A measured STOAD 01 torque curve has not been published.
- Range of motion · ROM
- Development target
The design aims to allow a large range of motion and deep knee flexion. Start and end angles, adjustment range and user limitations require documentation.
- Frame and materials
- Development target
Stainless steel and aluminium are the intended material direction. The final material list, finishes and upholstery will be confirmed before production.
- Service life
- Not confirmed
Theoretically longer service life is a hypothesis: a larger design margin may reduce wear under the same working load. Actual life also depends on design, materials, maintenance and use. No comparative durability test has been published.
- Warranty, dimensions and delivery
- Not confirmed
A five-year warranty is the intended direction. Coverage, exclusions and terms, together with dimensions, machine weight, pricing and lead time, must be set out in writing before an offer.
Seated / reclined
One machine. Two clear setups.
Current display model — not a production drawing or source of final dimensions.
Visual colour studies
Four expressions.
Obsidian, Graphite, Almandine and Alabaster are our four upholstery colour studies. The steel frame and red adjustments retain their finish. Final upholstery options will be confirmed before production.
3D studio visualisation · final mechanism, dimensions and materials require production confirmation
Seated: Upright back positionEvidence boundary
Research context, not product outcome.
The studies did not test STOAD 01 and do not show that fully reclined is better than 40° hip flexion.