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Date: Wed, 06 Feb 2008 15:50:26 -0600
From: Phil White <philwhite9@aol.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: Flex plate for 20B?
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OK...which flex plate should I look for to fit a 20B that came with 
manual trans flywheel and counterweight.  Having been twin-turbo'd in 
its original life, I understand it would have 9.4:1 rotors (right?).  
Does a 3 rotor use the same flex plate and counterweight as a 2 rotor?  
Or would the counterweight have to be different??

Phil White - RV-10 (assembling engine now, airframe done)
>
> Subject:
> Flex plate
> From:
> "Joe Berki" <jskmberki@alltel.net>
> Date:
> Tue, 5 Feb 2008 18:03:43 -0500
>
>
> Will a flex plate and counterweight from a 3rd gen 13b fit a 2nd gen 
> 13b?  How much for a flex plate and counterweight?  Thanks for any help.
>  
> Joe berki -Limo EZ
>
> ------------------------------------------------------------------------
>
> Subject:
> Re: [FlyRotary] Flex plate
> From:
> "Kelly Troyer" <keltro@att.net>
> Date:
> Wed, 06 Feb 2008 01:01:46 +0000
>
>
> Joe,
>    A 3rd gen counterweight and flex plate will fit 2nd gen 13B but the 
> counterweight
> will put the 2nd gen out of balance unless rotors and both 
> counterweights  from the
> 3rd gen are installed also...........On another note if this engine is 
> for an A/C using
> Tracy's redrive you must use a 2nd gen flexplate........FWIW
> --
> Kelly Troyer