Cedric Chang wrote: > I am rewinding a solenoid for the fuel control on a truck injector > system. A slug that is restrained by a small spring is pulled into > the solenoid to allow fuel to flow. > > Since I have a fixed amount of space, I am wondering if it > is better to have many windings of a smaller gauge wire or > fewer windings of a larger gauge wire. I am not worried about > inductance or ease of winding. Not worried about inductance? How do you plan to start and stop the current in the coil (magnetic field) with the timing precision you require? In general, injectors are wound with large wire and operated at high currents in order to get low L/R time constants with reasonable drive voltages. -- Dave Tweed -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist