JETCRAFT. Водомёт. Водомётный движитель. Теория. Лодка. На что обратить внимание. Руководство пользователя. (Boats: What to Look For . Buyer guide) |
Лодка. На что обратить внимание. |
Marathon Marine - web. Cтатья очень доходчиво рассказывает НА ЧТО ОБРАТИТЬ ВНИМАНИЕ при покупке лодки или водомётного катера.
NEW. Росомаха (img) русский конкурент Harbercraf / Jetcraft
Byuer Guide Руководство покупателя
Фотографии с выставки "MIBS 2009" Закон и катер. Постановка на учёт катера со стационарным двигателем. дюймы в сантиметры
Форумы на тему... с переводом.
Harbercraft 1875 J-Max White Water (img)
2075 White Water (img)
1875 J-Max XS (img)
2175 XS Фотографии с выставки "Охота и рыбалка - 2008"
Marathon Marine and Northwest Jet Boats (link)
PHANTOM Jet Boats (link)
RiverPro®. (link)
North Silver PRO 675Jet lnk
Росомаха (img)
Tom 525. Томь 525.
Коллекция ссылок на тему: водомёты для судов (Links). Курс доллара
Друзъя |
Buying a Welded Boat for the First Time Покупаем сварную лодку первый раз
We love to sell boats. It is good for our business and helps to sell more boats. However,
we recognize that for most first time buyers of welded aluminum it can be a scary
business. The typical buyer has 1-3 boats before, either glass or riveted but are looking
for more. Then they hit the BS wall. Most manufacturers of these products do not have
the common names you know in glass or riveted. After all of the some 400,000 boats sold
in North America, welded aluminum comprises only 1-2,000. So how do you buy?
Following are some suggestions:
1 Hot Boat Page 8, May 2002 by Kevin Spaise
We stated our bias up front. You are getting an all round, durable hull. Many of our
competitors have a race background and have earned worldwide recognition for that.
However, keep in mind racing implies a certain type of construction namely, lightweight,
delta pad and limited life as noted in March 2000 Hot Boat Magazine:
" The (Brand X) was designed as a throwaway. These boats were extremely light
and, with large lifting strakes and delta pads, generate a tremendous amount of
hydrodynamic lift. Essentially, you’re comparing an apple to an orange. The
(Brand Y – like Marathon) was designed to deal with rough water and windy
conditions while still delivering a good ride. The (X) on the other hand was
designed to strictly with the quarter-mile in mind (running in ideal conditions.)
Do you want dragster or SUV? If you want the dragster we should not be your supplier.
You are in a different world in buying welded aluminum and jets. It is okay to not know
as much as salespeople. A good salesperson will inform you as to your options. You
should be able to describe what kind of boating that you need and want. Things such as:
� Where do you want to use it? On lake and some river or all shallow water river
use?
� What do you want to carry 2 people or 10?
� Do you want it just for hunting and fishing or for wakeboarding too?
� How dressed up do you want it?
Ask lots of questions. There is a lot of varied opinion out there as to what constitutes the
“right’ boat. We have our opinions, but we are not the customer – you are. It is your boat
and you have to be happy with it.
If the salesperson focuses in on a particular boat make sure it meets your requirements. If
you're hit with a wall of technical jargon, ask for explanations. Do not accept jargon.
Boats are simple. They float, they have a power source and they have a drive. Oh, and the
pointy end should go forward. Your salesperson should be able to explain how this works
for the boat you are looking for.
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Boats: What to Look For. НА ЧТО ОБРАТИТЬ ВНИМАНИЕ при покупке лодки. Введение Сварные лодки в общем Наши предпочтения
Buying a Welded Boat for the First Time Покупаем сварную лодку первый раз
Bottom Width and Engine Size and Type. Ширина днища и мощность двигателя....
Stability at Speed: Porpoising versus bow down Стабильность скорости Дельфинирование.
Boat Materials: Aluminum versus Fiberglass . Материалы для катера
Cost differences between glass and aluminum . Сравнение стоимости стекловолокна и алюминия. Types of Aluminum. Типы алюминия.
Material Thickness
A Word about Welding
Suck marks, caterpillar tracks
Folded, ‘Origami’ Construction
Deadrise (Vee)
Planing Hull Bottom Types Корпус с дном плоского типа
Constant deadrise V (including modified V hulls)
Flat bottom hulls (8 degrees deadrise or less)
Bow Entry Types. Тип носа катера
Radius Bottom Круглое дно.
Lateral Stability During Planing Turns
Bottom Shape and Jet Intake
Planing Ability
Reverse Chines
Bottom Width: Flair is not everything
No Trim.
Hull Construction Standards
Shallow Water Operation
No Exposed Drive
Safety
Thrust line and Center of Gravity In line
Propeller Torque is Different than Impeller Torque
Propulsion Resistance.
Power Plants Силовая установка. Derived from Impeller Curves.
RPM Curve Derivation
Conclusion
Hull Resistance. Boat attitude..
Jet Drives
How jets work .
Impeller
Cut.
Cut, Speed and Load
Wear ring.
Nozzle
Stator.
Hard Anodized.
Cavitation .
Intake
Seals
Mixed flow
Axial flow.
Outboard jet:
Inboard jets:
So, what is the best jet?
Corrosion.....
UHMW...
Jet Diagnosis...
Rattle at Idle (V8 boats)
Speed too low for a Given RPM.
Poor acceleration or ‘holeshot’, combined with high top end
Definitions.
Porpoising .
Chine walk: 9
Ram effect .
Static thrust:
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Водомётный движитель. ТЕОРИЯ.
Адрес для переписки:
Spiridonov S. E.
Лодка. На что обратить внимание. |
JETCRAFT. Водомёт. Водомётный движитель. Теория. Лодка. На что обратить внимание. Руководство пользователя. (Boats: What to Look For . Buyer guide) |