Torque meter shaft with rotational slip enabled sensor indicating tabs

A torque meter shaft for use on an engine, the torque shaft comprising:

• a hollow tube having a first hollow tube end and a second hollow end tube;
• a ring with an ring outer diameter, the ring enveloping the hollow tube at the first hollow tube end, the ring having ring tabs disposed on the ring outer diameter;
• a shaft having a first shaft end, a second shaft end, and a deformable section with a material yield point, the shaft having an shaft outer diameter and shaft tabs, the shaft tabs disposed on the shaft outer diameter at the first shaft end, the shaft disposed within the hollow tube such that the ring tabs and the shaft tabs correspond forming an inter-locking non-contact fit;
• and,
• a first spline coupling and a second spline coupling, the first spline coupling is disposed at the first shaft end and the second spline coupling is disposed at the second shaft end, the first spline coupling communicating with an engine such that torque from the engine is transferred to the second shaft end and the deformable section elastically deforms when torque is applied to the first spline coupling and the shaft tabs change radial position relative to the position of the ring tabs such that relative change in torque can be measured, and when torque results in creating a deformable section deformation that passes the material yield point of the deformable section, the ring tabs and the shaft tabs contact each other, and the ring tabs are pushed back into a new position that compensates for the shaft deformation allowing the engine to maintain its full power capacity.