Venturi Velocity Stack for Kreidler Florett RS LVS

thingiverse

I've created these air filter nozzles myself by designing and printing them. I use them in the original air filter housing of my Kreidler RS with an 80cc engine. You can easily scale the nozzle size and length using a slicer program to match your specific needs. The continuous radius transition to the cylindrical nozzle effectively channels the sucked-in air straight into the carburetor intake. In my own moped, two smaller nozzles with a diameter of about 18mm proved better than one larger nozzle with a diameter of 38mm. My nozzles have been in use for a season and around 1500km. The oil in the suction tract hasn't caused them much harm. I still recommend using at least PETG for printing, though. I printed the 38mm nozzle from PLA but only used it for tuning rides and then removed it again.