[Rhodes22-list] Old Motor Lift
Ware, Joseph W.
joseph_ware@merck.com
Fri, 25 Oct 2002 09:56:16 -0400
Roger, you are amazing. You understand correctly. The mount itself has,
what looks like 2 nylon pieces on each side which will slide on the UHMWPE.
Would you suggest replacing them at the same time? How well will the UHMWPE
slide against itself?
Joe
-----Original Message-----
From: Roger Pihlaja [mailto:cen09402@centurytel.net]
Sent: Friday, October 25, 2002 9:41 AM
To: The Rhodes 22 mail list
Subject: Re: [Rhodes22-list] Old Motor Lift
Joe,
OK, if I understand you correctly, there will be sliding contact between one
side of the pieces you are replacing and the moving part of the motor mount.
The dimensions of the pieces are 18" long X 1.5" wide X 1" thick and you
need two pieces. Because it's a moving part, involving unlubricated "dirty"
surface-to-surface sliding friction, I recommend UV stabilized ultra high
molecular weight polyethylene (UHMWPE). UHMWPE will be completely
impervious to everything in the marine environment, will be totally
maintenence-free, is machinable with common shop tools like drills &
circular saws, & will outwear ANY other material you might use, including
all metals, wood, & any other plastic. Even dirt, grit, & salt spray which
accumulates in-between the two sliding surfaces will not cause the UHMWPE to
wear! However, such an abrasive build up may cause the other sliding
component of your motor mount to wear down. These UHMWPE parts will outlast
your lifetime & you will be able to pass them on to your children in your
will. In addition, you will notice a marked reduction in friction & the
motor mount will be easier to operate.
I would either go on-line or call U.S. Plastics Corp. & order a minimum 5'
piece of the following:
UHMWPE Rectangular Bar, White, UV Stabilized, 1.5" X 1" X 5' Cost: Approx
$25 + S&H + Setup & Cut Fee
NOTE: This material is also usually available in yellow & black as well if
you prefer one of these colors over white.
Hope this has been helpful, Joe. Good luck!
Roger Pihlaja
S/V Dynamic Equilibrium
----- Original Message -----
From: "Ware, Joseph W." <joseph_ware@merck.com>
To: "'The Rhodes 22 mail list'" <rhodes22-list@rhodes22.org>
Sent: Friday, October 25, 2002 7:25 AM
Subject: RE: [Rhodes22-list] Old Motor Lift
> Roger, thanks for all of the options. The third dimension on the wood, is
> 1". These are not the shims used to space the capturing pieces away from
> the transom. The wood IS the capturing piece. They hole the motor mount
> next to the boat. If this was a channel, the wood would be the outside
> edge.
>
> _____________________________ <Boat transom
> | | <--plastic
> -- -- <-- this is the wood
>
> How's this for a drawing? the mount slides inside this arrangement.
>
> Joe
>
> -----Original Message-----
> From: Roger Pihlaja [mailto:cen09402@centurytel.net]
> Sent: Friday, October 25, 2002 6:28 AM
> To: The Rhodes 22 mail list
> Subject: Re: [Rhodes22-list] Old Motor Lift
>
>
> Joe,
>
> "Starboard" is the tradename for a brand of UV stabilized polyethylene
> building material, which is manufactured by the King Plastic Co.:
>
> King Plastic
> P.O. Box 1475
> Venice, FL 34284-1475
> 941-493-5502
> 941-497-3274 (FAX)
> www.kingplastic.com
>
> Besides "Starboard", King Plastics also offers "Starlite" rigid foam core
> building material, which is about 40% lighter than Starboard.
>
> Here are some other suggestions:
>
> "CPG Seaboard" high density polymer sheet
>
> Compression Polymers Group
> 801 Corey St.
> Moosic, PA 19807
> 717-346-8797
> 717-346-5080 (FAX)
>
> "Kelron" HD polyethylene sheet
>
> Otron Tech
> P.O. Box 40
> Stn. Main, 760 Lowe Ave.
> Wallaceburg, ON, N8A 4L5 Canada
> 519-627-7960
> 519-627-7969 (FAX)
>
> All manner of structural shapes, sheets, rods, etc in a wide variety of
> polymers & they will custom cut & sell small pieces directly to
individuals:
>
> United States Plastic Corp.
> 1390 Neubrecht Road
> Lima, OH 45801
> 800-537-9724
> 800-854-5498 (FAX)
> www.usplastic.com
>
> Given the thru-bolted, heavily compression loaded application, I would not
> use any of the structural foams. You only gave dimensions of 1.5" X 18" X
?
> for the wooden pieces you need to replace. How thick are these wooden
> pieces? What do these wooden pieces you are replacing do? Do they move
> with the motor mount or are they just "shims"? Assuming they are just
> shims, then I would stay away from any of the brittle plastics like
> polystyrene or acrylics. Unfilled teflon will tend to creep with time
under
> compression loading, but glass filled teflon would be OK. PVC & cPVC will
> get brittle in the winter. Nylon 6, polypropylene, ABS, UV stabilized
> polyethylene (preferably high density or ultra high molecular weight), UV
> stabilized polycarbonate, G-10 phenolic, or fiberglass would all probably
> work OK in this application. By the way, assuming these are just shims,
are
> you satisfied with their present thickness? i.e., would you be happier if
> the motor were slightly nearer or farther away from the transom? By
> tapering the shims, you could also adjust the angle of the motor relative
to
> the water, thus potentially fixing any motor trim problems you may be
> having. Now is the time to think about & change these parameters.
>
> If this is a moving part, then I would use UV stabilized, ultra high
> molecular weight polyethylene for its abrasion resistance &
self-lubricating
> qualities.
>
> Roger Pihlaja
> S/V Dynamic Equilibrium
>
> ----- Original Message -----
> From: "Ronald Lipton" <lipton@fnal.gov>
> To: "The Rhodes 22 mail list" <rhodes22-list@rhodes22.org>
> Sent: Thursday, October 24, 2002 2:50 PM
> Subject: Re: [Rhodes22-list] Old Motor Lift
>
>
> > Starboard is a marine grade plastic often used to replace teak parts. I
> am
> > not sure of it's structural strength but it is easy to machine and
> resistant
> > to UV. Available at West Marine and many other suppliers in 2'x4'
> > boards.
> >
> > Ron
> > > -----Original Message-----
> > > From: Ware, Joseph W. [mailto:joseph_ware@merck.com]
> > > Sent: Thursday, October 24, 2002 1:15 PM
> > > To: 'The Rhodes 22 mail list'
> > > Subject: RE: [Rhodes22-list] Old Motor Lift
> > >
> > >
> > > Thanks Ron, what is "starboard" material?
> > > Joe
> > >
> > > -----Original Message-----
> > > From: Ronald Lipton [mailto:lipton@sprynet.com]
> > > Sent: Thursday, October 24, 2002 12:44 PM
> > > To: The Rhodes 22 mail list
> > > Subject: Re: [Rhodes22-list] Old Motor Lift
> > >
> > >
> > > I had a similar problem, although my lift had plastic rails.
> > > It is relatively easy to remove the old pieces and drill a set
> > > of holes that match the originals in a new plastic part. I used
> > > 1.5" nylon 6/6 which is UV resistant, although rather soft. I
> > > would guess that "starboard" material would work as well.
> > > I can take a picture next time I am at the boat - but probably not
> > > for a couple of weeks.
> > >
> > >
> > > Ron Lipton
> > > ----- Original Message -----
> > > From: "Ware, Joseph W." <joseph_ware@merck.com>
> > > To: "List Rhodes (E-mail)" <rhodes22-list@rhodes22.org>
> > > Sent: Thursday, October 24, 2002 10:48 AM
> > > Subject: [Rhodes22-list] Old Motor Lift
> > >
> > >
> > > > Does anyone have a picture of the older version of the motor lift?
> > Mine,
> > > > 1986, has two gray plastic pieces directly on the transom. Then
there
> > > are,
> > > > were, two pieces of wood (1.5"x18") which are through bolted onto
the
> > > > plastic pieces and actually hold the sliding mount on the transom.
> > These
> > > > pieces of wood split while I was trailering, leaving the motor
hanging
> > on
> > > by
> > > > both the lifting line and a safety chain attached to the transom. I
> > > > e-mailed Stan for a plastic replacement, and he is not familiar with
> > wood
> > > > ever being used. Any one else have wood, or pictures?
> > > >
> > > > Joe
> > > > S/V Whisper
> > > >
> > >
> >
>
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> Notice: This e-mail message, together with any attachments, contains
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