|
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
|
Bow Entry Types Тип носа катера
This bow entry type is normally seen on true white water hulls. The stem starts far back
on the keel and gradually pulls up to the bow. Its purpose is to generate lift up and over
pressure waves, rollers and ledges and also to provide bow floatation when the hull drops
into holes and aerated water. This bow configuration generates tremendous lift due to its
flat spoon shape. The trade off is pounding in large swells and consistent rough water
encountered on lakes and other large inland waters. The Marathon bow entry works well
in both these areas.
This entry is characterized by the stem rising up far forward along the keel and
transitioning abruptly into the bow. This produces a sharp chop / wave cutting bow
similar to that seen on many lake or ocean going boats. This bow entry provides more
boat in the water and increased static floatation. Because of the aggressive bow profile
this type will not provide the lift of the shallow bow entry in white water conditions. It
works well in rough water especially when combined with a deeper deadrise or variable
deadrise hull. Marathon uses this type of bow entry with a 12 or 18 degree deadrise on
most of our all purpose hulls that are used on inland lakes or bays. |
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
Bottom Width and Engine Size and Type.
Stability at Speed: Porpoising versus bow down Дельфинирование.
Boat Materials: Aluminum versus Fiberglass .
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:
|
Водомётный движитель. ТЕОРИЯ.
Адрес для переписки:
Spiridonov S. E.
|
Лодка. На что обратить внимание. |
JETCRAFT. Водомёт. Водомётный движитель. Водомётный катер. Теория. Лодка. На что обратить внимание. Руководство пользователя. (Boats: What to Look For . Buyer guide) |