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: --------------=20 One more question Chuck, Were the apex seals you were using single or dual spring type? This would help identify the original source. Hurley seals use a single spring while Atkins seals use dual springs (stock Mazda type). =20 =20 Tracy=20 =20 =20 Subject: [FlyRotary] Motor teardown results Hi Chuck; A couple more questions. Did you typically cruise at 6000rpm for most of the hours? other ranges? Are the apex seal springs still in spec? Do you have a gram scale to weight the seals? someone might be able to=20 identify them that way? Thanks Cary -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ ------=_NextPart_000_011D_01C64ADC.E4E60C20 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

I just=20 now removed the remaining apex seals from the failed rotor, they both = broke in=20 half getting them out. They are the one piece spring style. I can't find = any=20 record of the group buy, but they must have been Hurley=20 seals.

The=20 good rotor has two springs, so they must be the Mazdatrix seals. I = reported=20 before that the good rotor with the new rotor housing had chatter marks = as well,=20 they are not too bad after 150 hours but may not have lasted = another 150=20 hours.

The=20 free height on the one piece spring measured .195" which is within Mazda = limits,=20 does anyone know if the limit is different for the one piece=20 spring?

Cary,=20 I normally cruise between 5700 and 6000 RPM, but usually lower if just = flying=20 around locally. I don't have a scale that would measure seal=20 weights.

Thanks, everyone for helping sort this out.

Chuck

-----Original Message-----
From: = Rotary motors in=20 aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of = Kelly=20 Troyer
Sent: Saturday, March 18, 2006 10:18 AM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: Motor teardown=20 results

Chuck,Tracy and all,

      I also was in the group buy of = Hurley=20 Seals in 2002........We had a choice of

Racing seals (two springs) or the so called Long Life seal (one=20 spring).........Do you

recall which you have Chuck ? The Racing seal was more=20 expensive........

--
Kelly Troyer
Dyke=20 Delta/13B/RD1C/EC2

--------------=20 Original message from "Tracy Crook" <lors01@msn.com>: = --------------=20

One more question Chuck, Were the apex seals you were = using=20 single or dual spring type?   This would help identify the = original source. Hurley seals use a single spring while Atkins = seals=20 use dual springs (stock Mazda type).

Tracy

Subject: [FlyRotary] Motor teardown results

Hi Chuck;

A couple more = questions.

Did you=20 typically cruise at 6000rpm for most of the hours? other = ranges?
Are=20 the apex seal springs still in spec?
Do you have a gram scale = to weight=20 the seals? someone might be able to
identify them that=20 = way?

Thanks
Cary

--
Homepage: http://www.flyrotary.com/
Archi= ve=20 and UnSub:   http://mail.lanca= ironline.net/lists/flyrotary/

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