Recent content by Metalheadman

  1. M

    Calculate Propeller RPM from Motor No Load RPM

    Hello I am wondering what the relation between motor rpms and propeller rpms. I know that once you put the propeller on you are going to lose some of that speed due to drag and weight of the propeller. Spec. Battery: 10 Cell /37V RPM: 231kv Max current: 80A Watts: 2960w No load current...
  2. M

    Metal bar/tube strength by length and thickness.

    Hello guys I am working on designing somethings and I am using metal tubing. I do not know what type of metal tubing I am going to use this all depends on the math after I work my problem out. I am not sure what formulas to look up or what strength test I need to look up. For example if I have...