Hi All:

      I was having a bad time with fuel foaming bad runs etc. and I traced the problems to the spinner being out of balance. 

      The spinner is an "expensive" brand with the aluminum backplate. correct shaft adapters ,aluminum junction nut. centre screw in spinner and great care was made to make the cutouts for the prop symetrical.  Despite all of the care, the thing vibrated very badly!  How does one balance the spinner assembly?

      Perhaps plastic is not the material of choice but aluminum would be superior.  Is the Fox metal spinners the answer? Of course, the Fox spinners would have to balanced also!

      An airplane is not complete with the crankshaft hanging out of the front of the plane! Lol

      Suggestions?

                                                                                                       Tia,

                                                                                                       Frank