Archive for September, 2009
The Raymarine A50 Chartplotter
The Raymarine homepage features details on the A50 GPS-Chartplotter navigation system, that combines a direct sunlight viewable high resolution 5” VGA color display with advanced chartplotting.
Photo Credit: Raymarine
According to Raymarine, the rugged waterproof construction make the A50 a perfect fit for center consoles and open cockpits.
This A50 is preloaded with ready-to-navigate Navionics cartography for coastal U.S. waters and the Great Lakes. Expand your chartplotters capability by adding optional Navionics Gold or HotMaps charts using the onboard CompactFlash card reader. Or step up to Navionics Platinum for the ultimate chartplotting experience. Navionics Platinum charts feature 3D and satellite cartography, panoramic port photos, dynamic tides & currents, enhanced coastal points of interest, and more!
Each A50 features a high sensitivity internal WAAS GPS receiver providing pinpoint chartplotter accuracy. For added flexibility add a RayStar 125 GPS antenna for situations where an external GPS antenna is needed.
Combine GPS and VHF technology for added situational awareness and safety. The A50 utilizes DSC position polling(with DSC equipped VHF) and AIS target tracking (with optional AIS250) right on your chart
Add the optional SR50 weather receiver and the A50 becomes a powerful weather receiver utilizing SIRIUS Satellite weather technology. Graphical Nowrad radar, sea surface temperatures, storm tracks, city & buoy forecasts are now all at your fingertips.
Source: Raymarine
How do you remove a propeller from a 72 Mercury marine out board with a 150 hp?
The Prop nut has a locking tab ring that you need to pry up before you use a large 1/2 drive ratchet to remove. If the prop is stuck on the shaft, use a large hammer on a block of wood to "drive" it off. There are Special pullers but would be costly for do it yourself.
I have a 1985 bayliner with a 4 cyl Volvo Penta 270 it makes a low pitch growling sound while turning?
the sharper you turn the louder it gets, it sounds fine while going in a straight line i have just purchased this boat and am capable of any repairs(auto mechanic) but am not very familier with boats thank you for any information
I did a lot of sterndrive work on my previous boats. You have a bad gimbal bearing. You may also have bad U joints on the shaft as well. Pull the drive off the gimbal. Reach in and spin the gimbal bearing. You’ll feel if it’s rough. Examine the shaft as you move it around on the U joints. If there’s any roughness or free play, the U joints should be replaced. These parts are very similar to what you’d expect to see on a car.
The gimbal failed on my 1987 260 at the end of 1998. Replacing the bearing was a two day project because every tool (factory service tool, aftermarket tool, and home made welded tool) I used would not remove the frozen bearing. Finally removed the bearing by drilling, chiseling and cutting it out of the housing. Took a day to do that since I didn’t want to damage the transom plate.
Solved the sterndrive problem by buying a new Sea Ray the next year with twin V drives. If your gimbal bearing comes out easily with the puller, it’s a two hour job. Otherwise…
Best regards,
Frank
