Universal Atomic 4

Universal Atomic 4

The Universal Atomic 4 is a four cylinder, 64.46 cubic inch, convert|30|hp gas engine produced by the Universal Motor Company between 1947 and 1984 for use as auxiliary power on sailboats. Over 40,000 of the engines were produced during that time, with an estimated 20,000 still in use today. This "workhorse" engine dominated the expanding sailboat market starting in the 1960s, and between the years of 1965 and 1975 they were installed on up to 80% of new sailboats in the 25-40 foot (7.6-12 meter) range. Their longevity and reliability is proven by the fact that thousands of sailors still depend on the engine, even multiple decades after the Universal Motor Company ceased production.

=History and Lineage=The Atomic 4 is descended from an earlier Universal Motor Company design called the Utility Four, which was used extensively in World War II by the United States Navy and allies to power the lifeboats for the ships, barges, and tankers of many navies and merchant marine fleets. The Utility Four was replaced by the Atomic 4 in 1947.


Engine Type Four Cylinder, Vertical, 4 Cycle, L-Head
Bore 2 9/16" x 3 1/8"
Displacement 64.46 Cubic Inches
Compression Ratio 6.3:1
Engine Rotation Counter-clockwise from flywheel end
Firing Order 1-2-4-3 (no. 1 on flywheel end)
Reduction Gear Ratio 2.04:1 or direct 1:1 drive
Maximum Operating Angle ~15 degrees
Fuel unleaded gasoline
Lubrication Oil SAE 30

=Notes=Thanks to Don Moyer of Moyer Marine, and Robert Hess of Atlantic Four Engine Services, for contributing to this article.

= External links =
* [http://www.moyermarine.com/ Moyer Marine - Parts and Services for the Universal Atomic 4 Engine]

* [http://knowledgebase.engines1.com/default.asp?id=330&Lang=1&SID= Links to full Atomic 4 technical manual and owner's guide in .pdf format from Engines1.com]

* [http://www.alberg30.org/maintenance/MechanicalPropulsion/Atomic4/ The Care & Feeding of an Atomic 4]

Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Universal Time — (UT) is a timescale based on the rotation of the Earth. It is a modern continuation of Greenwich Mean Time (GMT), i.e., the mean solar time on the meridian of Greenwich, and GMT is sometimes used loosely as a synonym for UTC. In fact the… …   Wikipedia

  • Atomic Tom — Слева направо: Филипп Голицын, Тобиас Смит, Люк Уайт, Эрик Эспириту Основная информация Жанры …   Википедия

  • Universal Republic — Владелец Universal Music Group Основан 2006 Страна …   Википедия

  • universal time — (often caps.) See Greenwich Time. Abbr.: UT. [1885 90] * * * Mean (solar) time of the Greenwich meridian (0° longitude). Universal Time replaced the designation Greenwich Mean Time in 1928; since 1972 it has been based on international atomic… …   Universalium

  • Atomic bombings of Hiroshima and Nagasaki — Part of the Pacific War, World War II …   Wikipedia

  • Atomic clock — Nuclear clock redirects here. For the clock as a measure for risk of catastrophic destruction, see Doomsday Clock. For a clock updated by radio signals (commonly but inaccurately called an atomic clock ), see Radio clock. For the album by Zion I …   Wikipedia

  • Atomic mass unit — unified atomic mass unit Unit system: SI recognized unit Unit of... mass Symbol: u Unit conversions 1 u in... is equal to...    dalton …   Wikipedia

  • Atomic spectral line — In physics, atomic spectral lines are of two types: * An emission line is formed when an electron makes a transition from a particular discrete energy level of an atom, to a lower energy state, emitting a photon of a particular energy and… …   Wikipedia

  • atomic time — ▪ physics       timescale generated by atomic clocks (atomic clock), which furnish time more accurately than was possible with previous astronomical means (measurements of the rotation of the Earth and its revolution about the Sun). International …   Universalium

  • Atomic Energy of Canada Limited — Infobox Company company name = Atomic Energy of Canada Limited company company type = Crown Corporation foundation = 1952|f location = Mississauga, Ontario key people = Hugh MacDiarmid, President and CEO industry = Nuclear products = Nuclear… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”