Mailing List flyrotary@lancaironline.net Message #23813
From: Dale Rogers <dale.r@cox.net>
Subject: [FlyRotary] Re: Ross unit disassembly
Date: Tue, 14 Jun 2005 11:27:54 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Ben,

  It sounds as though you also need to check the thrust bearing.  IIRC, there is an upgrade for that, which greatly increases the longevity of the drive.

Dale R.

From: "Ben Baltrusaitis" <ben@gmpexpress.net>
Date: 2005/06/14 Tue AM 06:35:32 EDT
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: Ross unit disassembly

Kelly, it's a 2.17.
It appears that the four nuts on the back side hold the input shaft bearing with big flat washers. Unfortunately, the bearing allows the shaft to move up and down a lot and their is too much shaft movement forward and back. Their was a reverberation at 3200 rpm that sounded like it was coming from the planetary gear.
This is on a Subaru engine, not a rotary. My 20B is still on my workbench.
Thanks!
Ben
  ----- Original Message -----   From: Kelly Troyer   To: Rotary motors in aircraft   Sent: Tuesday, June 14, 2005 1:19 AM
  Subject: [FlyRotary] Ross unit disassembly


   Ben,
       Is your Ross drive 2.17-1 or 2.85-1 ?   --
  Kelly Troyer   Dyke Delta/13B/RD1C/EC2     -------------- Original message from "Ben Baltrusaitis" <ben@gmpexpress.net>: --------------     I need to get my Ross redrive apart to check the planetary gear. I have the whole unit off the engine and the 16 nuts off the cone where the planetary gear is located, but I can't get it to come apart.

    Do I have to take the four nuts off the back side to get the cone off?
    I don't have assembly instructions. I would really appreciate someone's help!
    Thanks!
    Ben


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