Tim,

 

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.

 

Hope this helps.  Let me know if you have any questions about this…

 

Dan