George,
I got all my o-rings from Creavy, but I
couldn’t find the receipts for the inner ones. Bookeeping never was
my strong point. Does the receipt your 11.230 o-rings state the size as
11.230 ID? If so, I’m
surprised to hear that they are a bit oversized. Mine fit like a glove.
BTW, I noticed on my Creavy receipt they
follow all dimensions with “ID” to make it clear this is an inside dimension.
So, when referencing the o-ring dimensions, I would recommend we follow their
nomenclature so that others (new to the list) will not be misled into thinking
we’re referring to CL measurements. That was my mistake when
placing my first order with Creavy. When these didn’t fit, and I was
placing my second order, Creavy explained to me that they reference all of their
dimensions to ID. At first this seemed odd, but not when you think about
their other customers wanting o-rings to go around tubes, shafts and things
that are easy to measure and reference to shaft size.
Mark S.
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of George Lendich
Sent: Wednesday, July 20, 2005
5:48 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: TES
"O" Rings
Thank you very much for your trouble mate, but I've found
the 11.230 just a tad too big and I'm hoping the 11.182 is that much better.
However I did try the 11.230 again and it does fit when it
's pushed into place and tends to want to press to the outer wall of the groove
- as in a spring fit - I don't know if this is a good thing or not!?
Now I know where PL got the new size from, but in my opinion
both the 11.230 and the 11.182 will do the job.
How come you only got the outer Creavey and not the inner as
well!?
Do we have any takers on sending an old Rotor housing
to Creavey to check for correct fit?
George,
I found my receipt from Creavy Seal
Co. Unfortunately, it is only for one coolant seal, and both oil
seals.
As for the outer coolant seal…
Originally I ordered a set of SIL .093 – 11.340 ID o-rings. These
proved to be too big and I had to send them back. Note that 11.340 minus
.090 is 11.230… the correct size. I had given them a size based on
CL, not ID. So, be sure you’re on the same page when ordering these
things. After a few emails to Jeff Chrysler, we got it right on the
re-order with these numbers… SIL .093
– 11.230. These fit perfectly. I can find no records for
what I ordered on the inner coolant seals. Here is an email I sent to
Jeff Chrysler at Creavy Seal after fit-checking the new outer coolant o-rings.
<snip>
Attn: Jeff Chrysler
Hi Jeff,
The reworked TES o-rings fit perfect. Final dimension for the
outer coolant o-rings is .093 x 11.230" ID. Thank you so much for
all your help. I can start putting my engine back together now. I
have passed this information along to Paul Lamar as well. This size
should work for all 13B and 20B engines, but you may want to verify size before
using it for the new Renesis engines.
Thanks again for your assistance,
Mark Steitle
<snip>
The information for the two oil seals are
SIL .093 – 4.680 ID, and SIL .118 – 4.330 ID.
Hope this helps,
Mark
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of George Lendich
Sent: Tuesday, July 19, 2005 6:33
PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: TES
"O" Rings
Thank the Lord for small mercies!
At least we have a consensus on that, I was thinking Oh No!
not another variation.
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
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".
--
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