01-01-2023, 04:59 PM
I machined up this reed valve engine breather for the TX650. The petal was half of a petal from a generic reed valve I bought on ebay. The rest I machined up on the mill.
Reed valve breathers allow air in the crankcase to be expelled on the pistons downstroke and drastically slow the flow of air being sucked back in on the pistons up stroke. thus maintaining negative crankcae pressure. As a secondary positive, they also prevent excesive pressure on the piston on its downstroke and prevent some oil seapage through jointing surfaces.
Reed valve breathers allow air in the crankcase to be expelled on the pistons downstroke and drastically slow the flow of air being sucked back in on the pistons up stroke. thus maintaining negative crankcae pressure. As a secondary positive, they also prevent excesive pressure on the piston on its downstroke and prevent some oil seapage through jointing surfaces.