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Not clear what your asking. I see some evidence of polishing
here and on the flywheel. Rest of the motor looks to be the
normal result of time dulling the shine. If you’re looking to
make the shinny parts match the original patina of the rest of
the motor, a mild acid like that of an aluminum brightener
would knock the shine back some getting you closer.
The aluminum corrodes over time dulling the shine. The
acid in the aluminum brightener accelerates the process.Tubs
A "Boathouse Repair" is one that done without having tools or the skills to do it properly.
Hello Tubs, It would help if I sent the correct photo. I saw this at Ambrose cove marina in New Hampshire. There is a similar looking restoration at the Velo Museum in Velo Ill.
It is highly polished. I am sure it never looked like this from the factory. Is the metal truly aluminum? Seems like aluminum came to wide spread use after WW II
Max
I have attached a word doc so the file fits.
This would be my opinion of the finish’s based
on the motors I have had over the years.
Gas tank-
As most of the early aluminum gas tanks are 2
piece and the seam is polished off. That would
indicate (to me anyway) the tanks were polished.
Also when I have removed (what looked to me
to be) an original transfer I have found a mirror
finish as in these examples.
The Johnson you provided a picture of would
have had all nuts, bolts, screws, fuel lines and fittings,
water pump, water lines and fittings, drive shaft
tube, steering bar and handle as well as the cylinders
nickel plated.
As far as the prop, gear case, and flywheel goes if
they weren’t polished, they are a very smooth casting
and when new would have had close to a mirror
finish resembling a new casting today.
I believe my restoration of this early Johnson represents
“closely” what it would have looked like when new.
The nickel on the cylinders of this example is as found.
Tubs
A "Boathouse Repair" is one that done without having tools or the skills to do it properly.
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