Jim Rogers wrote:  >>I am wondering if anyone can tell me if there should be a bulkhead ahead of the prop in the spinner of my 360.  The fiberglass spinner seems too flimsy to me.  Jim<<

    Some time ago, 18 Nov.2003, Dan Olsen wrote about stabilizing his spinner. "I used the factory glass spinner.  Having heard several stories of this spinner cracking the back plate, I figured it must have been to a slight out of balance or alignment situation.  Aligning this spinner is pretty much impossible.  Misalignment will cause a vibration that leads to failure.      My solution was to build a foam and 2-bid/side "donut" that is glassed into the nose end of the spinner.  I laid 2-bid on either side of 1/2" foam and cut it out into a donut shape approximately the size needed with the inside hole just a little bigger than the diameter of the prop hub.  Then micro/BID the donut into place in the nose of the spinner.  Finally, I put release tape around the prop hub, routed out the foam for about 1/4" on the inside hole of the donut to form a channel, filled the channel with micro and slid the entire spinner in to place and mounted it (the screws had already been installed).      The next day the spinner popped off and I now have a custom fit bulkhead that will prevent wobble at the tip of the spinner, thereby preventing cracking.      For photos, check out http://www.lancaironline.net/pix/olsen and look under the "construction" album for photos of the finished product."
    Perhaps Dan can add something to this.