February 14, 2012
The number one reason that drive systems go out of alignment is that the engine mounts are worn or have sagged. The engine sits lower and lower and moves around more so there is increased wear and vibration on the entire drive of the vessel.
Marine engine mounts can make the difference between a low vibration engine, mounted stable in your boat or an iron monster that shakes the hull, produces noise and may lead to damage. Broken, damaged or worn engine mounts are not always obvious when 100’s of pounds of static motor are sitting on the mounts. Excess vibration can be caused by many things, including; mounts that are too soft or hard, worn engine mounts or how the mounts are attached to the bed. Of course, there are other things that can cause vibration, including; misalignment of transmission to shaft, worn components (cutlass bearing, transmission) or damaged components (propeller, shaft, transmission).
The forces of a high revving, high horsepower modern marine engine are passed directly onto the engine mounts. Even small one cylinder diesels really pound the engine mounts. For all their apparent simplicity, engine mounts are subject to a number of forces:
- Longitudinal – The forward / aft motion of the engine
- Lateral – The side to side motion of the engine
- Vertical – the up and down motion of the engine
Most of these forces on a motor mount act in a form of chaotic unison. Not only must the engine hold its own position based on motor and transmission weight, but it also must resist the shearing force of the propeller under thrust. What looks like a simple job for an engine mount gets complex, quickly when throttling up; the engine mounts on one side are ‘stretched’, one the other side they are compressed, they are also subjected to shear by the thrust of the prop. Now add to the equation of a boat throttling up in rolling seas, or depending on the vessel, being subjected to storm conditions or high-speed pounding. The simple combination of metal and rubber that makes up an engine mount sees real abuse in a harsh environment.
Figuring out what engine mount you need:
- Number of mounts. Most marine engine/transmission units use 4 engine mounts, some smaller/older units use 3
- Matching up the weight and horsepower to an engine mount
- Match the Make Model of your engine
Once you know how many mounts you need and a data about the engine/transmission then nearly every modern marine engine can be found with The Engine Mount Cross-Reference Guide. In summary, should you feel that your system has gotten out of alignment, check your engine mounts first. It is the sagging engine that puts pressure on the cutlass and shaft seal and wears them to the point of needing replacement.
June 24, 2010
There are two main types of power tilt and trim motors and pumps that are designed for recreational boats that have an outboard or a stern drive.
Older power tilt and trim systems use an electric tilt motor and a mechanical lifting device. On stern drives, the electric motor turns a worm gear and uses a wet clutch pack to tilt the drive unit and lock it into place.
More modern boats, such as Johnson, Evinrude, Mercruiser and Volvo Penta stern drives, commonly use an electric / hydraulic power trim and tilt system. This arrangement consists of a 12-volt electric motor with a reservoir and a hydraulic pump or valve body.
Problems with the hydraulic pump or valve body manifest themselves when the trim and tilt motor seems to be functioning properly, but the engine or drive unit won’t stay trimmed, or bleeds when in the upside down position.
In this case, boaters are advised to replace their trim and tilt hydraulic pump and fill the reservoir with the proper power trim and tilt fluid. Captains are cautioned to not use transmission fluid, as the detergents in this solution can wear on the systems’ seals.
Visit the Replacing Power Trim and Tilt Systems comprehensive article to aid in trouble shooting and the common problems with power tilt and trim systems.
The primary reason to order a replacement boat canopy from CoverTuff is to fit your original manufactures frame and to protect your vessel from the wear and tear it faces from wind, rain and the sun’s ultraviolet rays. With these purposes in mind, CoverTuff constructs its boat canopy covers to fit right, the first time, and helps your boat withstand the forces of nature and protect your watercraft for years.
To protect your boat from the sun, CoverTuff boat canopies feature rot-proof threads that are resistant to UV rays, and rotting. Your vessel will also be kept safe from the rain by virtue of seams that are stitched from the underside of the canopy, to reduce the canopies likelihood of leaking.
Each CoverTuff canopy frame is designed for a custom fit; corner seams line up with side seams for a cleaner appearance, improving the view from any angle. These canopies feature fine details such as quality materials, scallop side and end trim and zigzag stitching. CoverTuff canopies are ideal for new canopy frames or as a replacement to an existing frame.
When replacing a canopy on a boat lift prior to 2005, you will be setting the springs aside and instead, you will be using the replacement shock cord system for secure attachment. Everything that you need to install the CoverTuff replacement boat canopy is included with your order.
August 28, 2009
Go2marine carries a complete line of Teleflex control cables for most applications, including vintage Morse cables. Teleflex Incorporated is a diversified global company supplying research and goods to Medical, Aerospace, Commercial and the Marine market sectors.
Teleflex control cables are the current replacement for traditional Morse 33c cables that fit operational Morse controls. Whether you are outfitting the controls on an inboard or outboard, Telflex cables are the industry standard. Beyond the 33c control cables, there are cables for both Mercury / Mercuiser as well as 1979 and newer Johnson Evinrude. Control cables are available as either “General Controls Cables“, which will satisfy the needs of many boat operaters or the “TFXTREME Control Cables” which are used on performance, commercial and military vessels.
General Controls Cables
- Available in varies quality, from Standard to Supreme
- 3300 / 33c fit Morse, Teleflex and many other manufacturers controls
- Mercury, Mercuiser cables available for standard Mercury controls and Mercury Gen II
- Johnson Evinrude cables fit 1979 to current, (adapter available for pre 1979)
- Cables available in 1 foot increments
- Quality built for most environmental applications
TFXTREME Controls Cables
- Built to survive in the harshest environmental conditions
- Unique splined core construction
- Maximum performance with no lost motion
- Cables available in 1 foot increments
- Excellent for long cable runs
- Available for most 33c, Mercury / Mercuiser and Johnson Evinrude applications
How to measure your replacement cable
For all your Control Cable, Steering Cable and Marine needs; visit Go2marine