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Message-ID: <006001c58e47$8d5e0ae0$7ad91fd3@george>
From: "George Lendich" <lendich@optusnet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-610326@logan.com>
Subject: Re: [FlyRotary] Re: TES "O" Rings
Date: Fri, 22 Jul 2005 08:57:20 +1000
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Mark,
Yes they do fit, a little tight! I actually had a job getting the "O" ring
out of the groove one I got it in there, mainly because it is sprung to the
outer edge of the groove.
I  have now received replies from Creavey - there may have been a delay of
some sort.
Anyhow Jeff C. suggests that some of the ID sizes may have been confused
with OD sizes -when the original sizes were recorded by PL. Maybe yes! maybe
no!

Any how he suggests that 11.340 ( original Dia) could be the OD and in fact
the ID could be 11.154.
He also suggests that the 9.111 ( original Dia) could in fact be ID of
8.985.
There's not much difference between 8.985 and 8.932, not is there much
difference between 11.154 and 11.182.

I'm not trying to confuse the issue, rather I'm just passing on the
information.

Jeff says he doesn't have a housing to trial the fit and that he hasn't had
many requests from the rotary people.

I think if someone over there could get a housing to him, it would solve all
our problems. I would do it myself if I were local - however I'm not!
They are indeed very nice "O"rings.
George ( down under)


> George,
> The 11.230 o-rings ought to fit, provided that this dimension represents
> the ID and not CL.
>
> Mark S.
>
> -----Original Message-----
> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
> Behalf Of George Lendich
> Sent: Wednesday, July 20, 2005 5:51 PM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: TES "O" Rings
>
> Mark,
> Yes I remember that, God knows what sizes he was using!
> BTW I will probably keep the 11.230, now that I have them.
> George
>
> > George,
> > If I recall, PL had to weight them down with a board overnight to
> > "stretch" the o-rings a bit to get them to sit down in the grooves.
> Not
> > sure if this was intentional or not.  Mine laid down in the grooves as
> > pretty as you please.
> >
> > Mark S.
> >
> > -----Original Message-----
> > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
> On
> > Behalf Of George Lendich
> > Sent: Tuesday, July 19, 2005 6:27 PM
> > To: Rotary motors in aircraft
> > Subject: [FlyRotary] Re: TES "O" Rings
> >
> > Gary/Kelly,
> > Your figures seem more accurate given mine are too big.
> >
> > The Oil rings are the same size I have now recorded.
> >
> > The Inner coolant ring of 8.932 ID is indeed smaller than the 9.111
> ID.
> > The Outer 11.182 is also smaller than my recorded 11.230 ID ( which is
> > down
> > from Paul's original figure of 11.340") - I figure that yours must be
> > right.
> >
> > Gary, are your "O" rings red in the middle with a clear outer
> covering!?
> > It's just that it looks different to what I've seen in photo's.
> > Do Creavy take back and exchange?
> > George (down under)
> >
> > > 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
> > >
> >
> >
> >
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> >
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> >
> >
>
>
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