From: "Charlie England ceengland7@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] RD1-C damper
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Date: Sat, 5 Dec 2020 18:58:02 -0600
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On 12/5/2020 6:35 PM, Stephen Izett stephen.izett@gmail.com wrote:
> Hi team
>
> Having completed phase #1 testing of the Glasair Super IIRG power by Renesis and RD1-C redrive, I’re going to pull the redrive for its 25 hourly initial inspection.
>
> Tracy deleted the damper assembly from the last rendition of his design and I’m considering removing ours by creating a new adapter plate from the existing splined
> part that is currently riveted to the damper and adding some longer bolts and spacers.
>
> Has anyone heard anything further in regard to RD receives with the damper removed?
> Has Tracy given any further updatess?
> All I have read was after initial tests some years ago.
>
> Cheers
>
> Steve.
Best I remember is that you need either an aluminum or steel racing 
flywheel, to get more mass on the engine side of the system.  IIRC, it's 
also limited to low mass (wood, etc) propellers. The ones he sold had a 
different input shaft, but I think Dave Leonard modified his RD1-C & to 
use a steel racing flywheel which was only slightly heavier than the 
aluminum version. Search for Dave's posts, if he doesn't chime in. I've 
been wondering if Guibo/Rototflex couplers could be a viable alternative 
to the aluminum plate/rubber discs. Probably would weigh more, and 
definitely cost more.

Charlie

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