Smartgrease - mindsetsonline.co.uk
Smart grease is a particularly sticky and viscous gel with almost magical shear characteristics. It can be used in prototype applications to improve performance (as above) or it can be used in novel applications such as wound-up motors to provide uniform speed and torque output. The example illustrated here is a simple elastic band motor comprising just a pill container, elastic, wheel and securing/winding rod. If, under normal circumstances, the wheel is wound up and released, it will spin rapidly and slow down. If a tiny amount of smart grease is added between the friction surfaces, the wheel will turn at a uniform (very slow) speed and the stored energy will be released uniformly.
http://www.mindsetsonline.co.uk/produ...