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Just shows that there was a wide variety in Ross Drive configurations and
workmanship standards. The last time I talked with Chris Ross (son of Lou
Ross developer of drive), he mentioned that the Subaru users were having
problems with cracking the aluminum "Flex plates" - then characteristic of
Chris - suggested I send my drive back to have the flexplate changed to an
aluminum one. I declined.
Ed A
----- Original Message -----
From: "Finn Lassen" <finn.lassen@verizon.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Monday, January 24, 2005 11:09 PM
Subject: [FlyRotary] Re: Flex plate <> Flywheel [FlyRotary] Re: flex plate
Odd. My Ross used a custom 1/2" (I think) ALU plate with the starter
ring gear crimped onto it.
That plate bolts onto the automatic counterweight.
The dampener assembly (with the spline for the input shaft) then bolts
onto the ALU plate with 9 or 12 8mm allan head bolts, with 1/2" or
maybe 3/4" ALU spacers between the dampener assembly and ALU plate.
Finn
Ernest Christley wrote:
> Paul wrote:
>
>>>
>>> What do the bolts screw into? Rivnuts? A backing plate?
>>>
>>
>> The bolts screw directly into the existing holes on the automatic
>> transmission flex plate. (which I used to think was a flywheel, until
>> several helpful members of the Fly Rotary list helped to educate
>> me). Paul Conner
>
>
>
> I've read this several times, and still not quite sure I can believe
> it. The flex plate I have is thin. In the .040" range thin. I
> realize that it will all be shear forces, but can 9 threaded holes be
> expected to take the 800ft/lb of reaction forces that a typical NA
> engine is expected to put out?
> (I believe I got the 800ft/lb number out of the discussion of the
> Schwertz beam motor mount on PL website). Just doesn't seem like it
> could hold up.
>
>>> Homepage: http://www.flyrotary.com/
>>> Archive: http://lancaironline.net/lists/flyrotary/List.html
>>
>
>> Homepage: http://www.flyrotary.com/
>> Archive: http://lancaironline.net/lists/flyrotary/List.html
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