Mailing List flyrotary@lancaironline.net Message #20270
From: Jim Brewer <alpha@concordnc.com>
Subject: Re: [FlyRotary] Re: V shape Apex Seal Slots?
Date: Thu, 14 Apr 2005 21:23:28 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
On Thu, 14 Apr 2005 16:26:19 -0500, Russell Duffy wrote:
>?Apex Location????????????Base????????????Top
>
>
>?Seal1????????????????????????1.99mm????????2.16 - 2.26mm Seal2??????
>???????????????????1.98mm????????2.22 - 2.25mm Seal3?????????????????
>????????1.98mm????????2.18 - 2.20mm ??Clearly the slot is larger at
>?the top - is this due to design or is this due to wear???Lynn???
>?Anybody? ????Hi Ed, ??I still have the?brand new rotor that was
>?dropped?by the ceramic coaters, and I just measured the two un-
>?smashed apex seal slots.??I also measured the slots on the dead
>?rotor that was involved in my oil out adventure.??All the slots
>?measure 1.89mm, with no sign of being larger at the top of the slot
>?than the bottom.?????Cheers, Rusty (my kingdom for a decent
>?contractor)?


Just for the record, how did you guys measure those slots to this degree of accuracy?
What tools were used?  Were the slots absolutely spotless?

Jim Brewer


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