Overmolded paddlewheel for a flow meter

A method of fabricating a paddlewheel for a flow meter, the method comprising:

• providing an inner part of the paddlewheel, wherein the inner part of the paddlewheel comprises a hub, a first partial blade and a second partial blade, the first partial blade comprising a first spoke extending from the hub and a first winged portion extending from the first spoke and the second partial blade comprising a second spoke extending from the hub and a second winged portion extending from the second spoke, the first partial blade defining a first cavity and the second partial blade defining a second cavity;
• inserting a plurality of magnets in the inner part of the paddlewheel, by inserting a first magnet into the first cavity of the first partial blade and inserting a second magnet into the second cavity of the second partial blade;
• and
• overmolding an outer part of the paddlewheel over the inner part of the paddlewheel by (1) forming a first outer blade portion extending from the first partial blade thereby closing the first cavity and (2) forming a second outer blade portion extending from the second partial blade, thereby closing the second cavity.