From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Flexplate cracks
Date: Thu, 9 Jan 2025 15:33:53 +0800
References: <list-3781070@lancaironline.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-3781070@lancaironline.net>
Message-Id: <7C38854E-AC75-4E92-906C-481DE139A47C@gmail.com>

Thanks very much Steve.
Much appreciated.

Steve

> On 9 Jan 2025, at 3:31=E2=80=AFpm, Steven W. Boese SBoese@uwyo.edu =
<flyrotary@lancaironline.net> wrote:
>=20
> Steve,
>=20
> I didn=E2=80=99t 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.
>=20
> 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=E2=80=99=
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.
>=20
> Steve Boese=20
>=20
>> On Jan 8, 2025, at 11:03=E2=80=AFPM, Stephen Izett =
stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:
>>=20
>> =EF=BB=BF=E2=97=86 This message was sent from a non-UWYO address. =
Please exercise caution when clicking links or opening attachments from =
external sources.
>>=20
>>=20
>> Hi Steve
>>=20
>> Is this recent then?
>>=20
>> I=E2=80=99m not able to get to my aircraft at present to check my =
flex plate which has probably seen 50 hours of service.
>>=20
>> Was it possible to see these cracks assembled?
>>=20
>> 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.
>>=20
>> It would be great to have an update and current info from Tracy =
regarding his no damper hours if anyone can contact him.
>>=20
>> Very helpful, thanks again Steve
>>=20
>> Steve
>=20
> --
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