Olivier,

I’ve attached a close-up photo of the linear bearing on my GBI motor mount.  Note that it doesn’t seem at all like yours.  My linear bearings are T-shaped pieces of glass-filled PTFE that ride in 6061 T6 Aluminum C-Channels.  This design of linear bearing has a huge bearing surface area, so the wear rate is minimal.  The design is self flushing to keep abrasive debris out of the bearing.  Plus, the bearings can be easily swapped out W/O disassembling the whole motor mount when replacement is required after many, many service hours.  I don’t know when GBI changed the design; but, it might be helpful if you provided a few more photos of your motor mount.

Also, it might be helpful if you make a few measurements of the ID/OD/Length of your bearings.  They might be standard plastic pipe sizes and easily sourced from Grainger, McMaster-Carr, or United States Plastics Corp.

Roger Pihlaja
S/V Dynamic Equilibrium

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Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

From: Olivier Hecht<mailto:oehecht at gmail.com>
Sent: Saturday, June 27, 2020 9:01 PM
To: The Rhodes 22 Email List<mailto:rhodes22-list at rhodes22.org>
Subject: [Rhodes22-list] Motor lift “bearings”?

Did 50 miles on Fretless from 3 pm Friday to 6 pm today, with a nice break
at a marina from 7 pm to 8 am!

An unpleasant part of the experience was dealing with the motor lift
getting crooked in the tracks because two of the four plastic “bearings”
the mount rides on were worn out/missing. See pics. I sent a note to Stan
but also wanted to ask here if anyone has replaced these. Any tips on
replacing them without dismounting the motor if that’s possible?  The side
tracks appear to come off and I was able to retrieve one of the bearings
that was loose in the track after parking the  it on its trailer. Getting
new ones in will probably be harder though...

Thanks. Olivier


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