Phil I have been told that all the Cosmo 20B's were automatics. Perhaps the engine was transplanted into something else? The bellhousing is the same as the 13B Cosmo. My 20B has a flex plate and CW so I took the automatic thing as correct. That's what I've heard, then again I could be wrong!
Bill Jepson
-----Original Message-----
From: Phil White <philwhite9@aol.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Wed, 6 Feb 2008 1:50 pm
Subject: [FlyRotary] Re: Flex plate for 20B?
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
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