German systems usually use a single large tensioning pulley with a toothed rim, mounted on an arm hinged to the mast.
The SP4D variant had a uni-directional engine unit and carried a larger pulley to drive a dynamo connected to a small 3v lamp.
The SP4D version sported a dynamo and an additional extra large pulley (on the same shaft) using a standard flywheel.
The engine has a double reduced drive using a large intermediate pulley, similar to the flywheel.
Yet another method was to harness the fish, with a thin silk cord that unwound over a large pulley, actuating an electric relay once every revolution.
The steel cables are anchored into the bedrock and extend through marble-covered shafts up to the top floor, where they are led over large pulleys.
It can deliver high power at high speeds (500 hp at 10,000 ft/min), in cases of wide belts and large pulleys.
V-belts need larger pulleys for their larger thickness than flat belts.
The San Dominick steered with a cumbrous tiller, with large horizontal pulleys attached.
The hauling and balance ropes being positioned around the large pulleys.