Kelly,

On second though, I believe you’re right and I was wrong.  Creavy works with ID, not CL. 

 

Mark

 

---

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer
Sent: Tuesday, July 19, 2005 10:41 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: TES "O" Rings

 

Cary,

  Thanks for the input.......What we are trying to do is get final and absolute

numbers on the sizes required........One of the first requirements is for all to

be on the same page with measurements.......Previous reports have shown

ID's , OD's , Center diameter and/or total length........I seem to remember reading

a previous post that "Creavey" preferred working with a ID measurement

but Mark just posted that the Center diameter is what they use ?? Bottom

line we all need to be on the same page among ourselves and with "Creavey".

 

FWIW

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2

 

-------------- Original message from jbeazley <jbeazley@magma.ca>: --------------


> Hi Kelly;
>
> I believe Paul's numbers worked out to be:
>
> Oil O-rings
> 0.093 x 4.68
> 0.118 x 4.33
>
> coolant O-rings
> 0.093 x 8.932 (0.098 not available)
> 0.093 x 11.182
>
>
> I ordered the coolant orings with 9.00 and 11.25 ID, they fit without
> stretching and had a bit of slack, I would get slightly smaller next
> time.
> I should also add these were for an '86 NA. I assume they are all
> supposed
> to be the same but I have seen some casting differences between
> housings.
>
> The 0.093 x 8.932 were originally listed as .098 but I was told by
> Creavey
> this size is not available.
> These appear to be narrow in the wide groove but have an approximately
> correct "nominal squeeze".
> Biggest problem seems to be getting the oring to stay in the groove
> with minimal hylomar during installation.
>
> I believe the ones you want are the SIL/PFA o-rings good to 500F.
> Ask for them specifically.
>
> Haven't run the engine yet to give any real feedback.
>
> Cheers
> Cary
>
> >> Homepage: http://www.flyrotary.com/
> >> Archive: http://lancaironline.net/lists/flyrotary/List.html