On Mon, 13 Sep 2010 11:35:32 -0500, CaveLamb
wrote:
J. D. Slocomb wrote:
On Sun, 12 Sep 2010 11:24:27 -0500, Don Foreman
wrote:
On Sun, 12 Sep 2010 02:41:10 -0500, CaveLamb
wrote:
Don Foreman wrote:
On Sun, 12 Sep 2010 00:28:54 -0500, CaveLamb
wrote:
There are two pics of the mount I'd like to find at the bottom of the
page...
http://www.home.earthlink.net/~capri26/motor.htm
But it seems like nobody makes that simple mount any more (not even China).
I think it would be pretty simple for a real metal smith to make.
Heavy stainless steel sheet, cut, bent, welded.
Your thought is correct. That would indeed be an easy peasy job if
all the details were known.
If anybody knows where to find one, I'll email your favorite libation
for a link!
Or, if anybody would be interested in making one, I'd pay gladly for it!
Since you don't have a dimensioned and detailed drawing and
specification that a metalworker could "build to print", you'll need
a local artisan who can look at the job, discuss it with you until all
of your wants and preferences are defined and understood, and then
design and make what you want.
Perhaps you'd prefer a metalworker that has some experience with
handling a rolling, pitching sailboat in 30+ knot winds in pitch dark
with green water washing over the decks while trying to do something
else. That might narrow the field a bit.
Might narrow the field a tad TOO much.
Besides, I doubt the equipment would fit through the hatch...
And would probably sink the boat with the weight anyway.
If not it would for sure rust up a mill right quick!
I can draw the thing.
Detailed and dimensioned.
I can do engineering drawings pretty well.
(I'd just need to get the dimensions and details from one of the
guys who has one. There are several in our fleet)
But cutting, welding, and passivating stainless is a bit beyond
my garage shop skills.
Start the bidding at $200?
Shouldn't be hard to get responses once you have a print and a spec.
Passivation might be an issue. You might need to separate that -- have
one shop make the device and a metal treatment shop passivate it. Up
here I'd have Deburring, Inc in St. Paul do that.
On the other hand, if there is a marine artificer there (and I'd think
there'd have to be), your part would probably be easy for him.
The mount you show is pretty simple to make. I wouldn't try to bend
stainless - not that you can't do it but it would probably be easier
to cut four sides and weld them together.
If you get some flat stainless the correct thickness you can cut the
four sides in probably less then an hour with a 4" angle grinder and a
1 mm cutoff wheel. Once you get them cut finish grind them to size in
pairs (R & L sides, Front & back), drill any required holes and either
weld them yourself or have them welded. Passivation can be done with
Stainless Pickling gel (paint it on, wait a bit and wash with clean
water) or can be polished to a gloss.
I'd reckon that with a 4" angle grinder, a DC arc welder and a handful
of stainless electrodes and a bottle of pickling gel it can be
finished by supper time.
Cheers,
John D. Slocomb
(jdslocombatgmail)
I have a steel cutting blade in my chop saw, so I'm actually a little
more advanced than a 4" angle grinder (a LITTLE bit any way).
There is that pesky break in the sides that gives it some lateral
stiffness. Other than that, not a bad suggestion.
I'm not sure about using a chop saw with stainless (I don't have one
anyway) The problem is that stainless work hardens very easily and
possible would using a saw.
I have an extremely slow connection but what you posted looked like a
four sided mount. If you want more lateral strength you can either
weld stiffeners to the sides, make it out of slightly thicker metal or
put a top and bottom on it with a large hole to allow access to
internal fasteners.
Buy seriously, if you have a welding machine and can weld a bit then
stainless is not at all difficult to arc weld. Use 3/32 rod, of even
smaller and grind between passes if necessary. Try a few test pieces
and you'll be surprised how easy it is.
You must passivate it though. I don't know about the U.S. but over
here every shop that stocks stainless rod also stocks the passivation
get/liquid. I've also used various acid containing cleaners - one tile
cleaner has 20% acid... but they don't work anywhere as well as the
real passivation stuff which contains, IIRC, both nitric and sulphuric
acid.
someone else's suggestion. I once built a clip on outboard mount
for a soft tail inflatable. Had it galvanized and then painted it with
two part paint. Lasted until I sold the boat. Powder coating might
also work.
Cheers,
John D. Slocomb
(jdslocombatgmail)