Dave Gerr - Boat Mechanical Systems Handbook-How to Design, Install, and Recognize Proper Systems in Boats
first became popular on the North Sea, a cold, rough bit of ocean. Everything on these boats had to work and work well, or they ...
the vertical pipe or hose exiting it) should be less than 42 inches (106 cm, see Figure 7-12) to keep back pressure within accep ...
all the metal piping should be from schedule 80 (double-weight) pipe. The plate caps and fit- tings should be as thick as or sli ...
F igure 7-18 . Ma in eng ine raw-water p ip ing ...
through remote V-gears. The ratio of cooling water in the exhaust to that in the bypass line not only varies from engine to engi ...
F igure 7-19 . Prof ile of the exhaust system in a 72-foot schooner ...
Figure 7-20. Exhaust system continued (sec- tion view) ...
F igure 7-21 . Schnell boat mach inery and arrangement (Repr inted from Fast F igh ing Boats , by Harald Fock) ...
resulting suction, combined with gravity, will ensure that all or almost all the exhaust exits underwater at speed. Underwater N ...
Separating the Water Still another exhaust option is mixing the wa- ter with the exhaust gases, as usual in a wet exhaust system ...
and the drawings (Figure 7-29) show the setup. This unit is designed to work with a waterlift muffler. The wet exhaust enters th ...
create a dangerous situation that doesn’t exist when you’re underway. You should study both ABYC TH-22, Educational Infor- matio ...
4. QUICK ACCESS TO THE RAW-WATER PUMP. This is to ensure that you can clear any clog or breakage in the pump. Clogging is un- li ...
CHAPTER 8 In the previous chapter we discussed the most common exhaust systems on boats: wet exhausts. As we saw, these exhausts ...
small cars (like the original VW Beetle), and even some airplane engines—are, indeed, simply air cooled. This means that the eng ...
cooling is appropriate only for small, inexpen- sive runabouts and day boats, and only for vessels operated in temperatures well ...
In this system, no raw water enters the engine block, only the antifreeze/freshwater coolant mixture. This closed system is effi ...
system components are either ordered or fabricated separately by the boatbuilder. There are two basic types of keel coolers: hul ...
REQUIREDCOOLINGSURFACEAREA Regard- less of configuration, this is a heat-transfer process, so the surface area required for ad- ...
Formula 8-1. Circumference of a Circle Circumference=π×Dia. Where π= 3. 14 Dia.=tube outside diameter, in. or mm Example:For ins ...
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