dbaflyer
Well Known Member
I have an RV9, O-320, Fixed Pitch Catto 3 Blade. It has the 2.25 inch spacer and 5/8 inch crush plate. I mounted the crush plate against the propellor and the forward bulkhead forward of that. I marked the outline of the bulkhead on the spinner as it was positioned on the airplane. When I take it apart and see where the forward bulkhead sits flush against the inside of the spinner it lies about 12/32nds forward of where it is actually going to lie. In order to have it sit flush were it actually goes would require about 1/8 in of additional fiberglass layup on the inside of the spinner. Is this pretty normal? I've read where you need to ensure this space is tight, but I was never thinking 1/8 inch.
In this photo you can see where I marked the aft edge as it was mounted and where it actually sits flush against the inside of the spinner.
In this photo you can see where I marked the aft edge as it was mounted and where it actually sits flush against the inside of the spinner.