Mailing List flyrotary@lancaironline.net Message #56945
From: John <downing.j@sbcglobal.net>
Subject: Gear box
Date: Mon, 24 Oct 2011 22:56:12 -0400
To: flyrotary <flyrotary@lancaironline.net>
Earnest, what are you using for output shaft bearings?   As I reported last year the oil seal came out on the out put shaft of my Marcotte gear box.  Two Eaton gear box engineers are working on a solution to circulate oil to bearings and also cool the oil.  The output shaft has two tapered bearings with the small end of the taper facing each other and the consensus is that the oil will always move from the small to the large end of the taper, which will trap the hot oil next to the seal.  There was no return for the oil or a retainer for the seal.  These bearings were totally submerged in 80W oil.  If this is indeed the issue the case expanded and the seal fell out.  JohnD 
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