Steve,

I didn’t see the cracks prior to disassembly and doubt that they could have been seen on the counterweight side very well -if at all- when assembled.

I replaced the Flexplate with a steel flywheel about a year ago.  Since then, I replaced the four rubber dampers with machined aluminum discs giving a solid connection and then dynamically balanced the system.  This was done because maintaining a dynamic balance wasn’t possible with the dampers.  Only a few hours of flight have occurred in this configuration so far and there has been no indication of problems resulting from this change.

Steve Boese

> On Jan 8, 2025, at 11:03 PM, Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:
>
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>
> Hi Steve
>
> Is this recent then?
>
> I’m not able to get to my aircraft at present to check my flex plate which has probably seen 50 hours of service.
>
> Was it possible to see these cracks assembled?
>
> I would appreciate your reflections on Tracys latter choice to remove the damper, and particularly when using a timber/glass prop such as an MT.
>
> It would be great to have an update and current info from Tracy regarding his no damper hours if anyone can contact him.
>
> Very helpful, thanks again Steve
>
> Steve