| Jensen
Model #80 "V-Twin"
Marine Engine |
USA - Manufacture date:
1984
Bore = 1/2", Stroke 5/8", PTO diameter
= 3/4"
Style: Double Acting, dual cylinder,
"V" configured
marine |
Dimensions: 3 1/2" length x 4" width x 4" height |
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The Model #80 Marine Engine |
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There are long standing rumors that unicorns
do exist. There are also rumors that
Jensen Steam Engines once made a marine
steam engine. No one ever seems to have
really seen either one, up close
and personal. I'd seen one photo of
a Model #80 which was installed in a
model boat, but never expected to see
one myself. There simply weren't that
many of them made. Then up pops an email
from a gentleman who was liquidating
an estate, which included quite a number
of toy steam engines and a few odd
hand made pieces. There, attached to
the very end of the email, was a photo
of an unknown 2 cylinder marine steam
engine. I thought it could be a Jensen,
but the photo was a bit fuzzy and after
all... who emails you photos of a unicorn? |
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I wrote to the fellow and inquired
about this engine and several other
pieces he was offering but didn't
get any response. After several attempts
to email him, I did a bit of research
and found a way to contact him by phone.
We spoke for a while and I was able
to purchase the engine from him. I still
had some doubts that the engine
was what I hoped it would be.
This
little engine arrived a few days later,
in perfect like new condition, having
never been powered. After consulting
a couple of Jensen collectors and comparing
it to the example on the Jensen Web
site, the engine was confirmed to be
an authentic Jensen Model #80. Who knows...maybe
unicorns really do exist. |
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Rear of the Model #80 Marine Engine |
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Detail of the Model #80 Valve System |
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This oscillating engine's design incorporates
two of Jensen's model 70 double acting
cylinder
sections into a 90° V twin configuration.
Note the dual steam lines running from
the rotary style directional valve, which allows
for reversing the engine. The engine
was designed to be easily adapted for radio
control use. The intakes were not fitted
with steam lines, allowing for custom
fitting to the builder's own design
requirements.
The Model
#80 was only built for a short time
in the mid 1980's and few of the engines were ever
made. The consumer steam hobby was at
a low ebb and boat builders were a very
small part of the market, so the engines didn't
sell very well. The engines were never offered with a boiler, nor were they offered as display models, like the rest of the well known Jensen line. |
Although I'm not
a big collector of toy engines, the
Model #80 is a neat little piece of
work and will probably be adapted to a Jensen
boiler, with a shaft and brass
prop for
display. |
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