Hi Mark, Tesla List wrote: > Original Poster: mark <moyson-at-tig-dot-com.au> > Hi, > What is the wheeler equation?? > mark Wheeler Equation: L(uh) = (R^2 * N^2) / (9R + 10B) L(uh) = inductance in micro-henry's R = radius in inches N = number of turns B = height of windings (top to bottom)in inches Bart