Monday, April 20, 2009

What does a Torque Equalizers for Hydrofoil do for a boat?

I know what the hydrofoil does but what are torque equalizers and what do they do?
What does a Torque Equalizers for Hydrofoil do for a boat?
%26quot;torque equalizers%26quot; offset %26quot;torque steer%26quot;, which happens to propeller-driven stern drive- and outboard-powered boats. Also has something to do with one of Newton%26#039;s laws, but I slept through that class.





Imagine the propeller as a wheel - if it were on solid ground and spinning like that it would roll off to the right (if it didn%26#039;t have the boat to stop it). Well the boat is in water, which isn%26#039;t exactly a solid medium and in fact, is less dense near the surface, and the top side of the propeller is nearer the surface than the bottom side.





The net result of all this is that, with a standard right hand prop spinning clockwise, it wants to roll to starboard. If it carries the aft-most part of the lower unit to starboard, the engine (or outdrive) will turn to port, causing the boat to make a starboard turn.





All outboards and stern drives have a %26quot;torque tab%26quot; hanging on the antiventilation plate above and a little behind the propeller. The torque tab is designed to do the exact same thing as the torque equalizers - they act as little rudders, steering the motor or outdrive in a more or less straight line.





Sometimes that%26#039;s not enough, or the owner doesn%26#039;t know how to adjust it, and steering the boat becomes very tiresome.


On a trollling motor that is 24 volts .how do i jump my battiers across from to 2 12volt to 24 volts help ple

Run the poitive of the trolling motor to the positive of one battery. Next using a battery cable jumper between the negative of battery 1 and the positive terminal of battery 2. Then connect the negative of the trolling motor to the remaining negative post.
On a trollling motor that is 24 volts .how do i jump my battiers across from to 2 12volt to 24 volts help ple
connect 1s%26#039; + to the others%26#039; -, the other 2 ends to the troller as + %26amp; -.
On a trollling motor that is 24 volts .how do i jump my battiers across from to 2 12volt to 24 volts help ple
if i understand correctly you are trying to turn 2 12 volt batteries into 1 24 volt battery this is done by running one wire from the positive side to the negative side of the other and the open terminals (the nones left over ) hook up as you would mormaly to a 12 volt system
Reply:Give Brian the points.Easy to understand and ___correct___.
Reply:Add a circuit breaker on the positive lead to the trolling motor, within a few inches of the battery. Unless the owners manual says otherwise, use a 38-amp manual reset breaker. You could use auto-reset, but you wouldn%26#039;t want the prop to start spinning while you were clearing your fishing line from it.
Reply:Connect the batteries in series and use the positive terminal on one battery and the negative terminal on the other battery to connect to your trolling battery.





Here%26#039;s a great diagram: http://www.solarray.com/TechGuides/WireD...





(just change 6volts to 12volt battery in the diagram)
Reply:scooterb.. answered this perfectly. He wins!


Do hydrofoils added to outboards really give a noticeable increase in fuel economy?

I have a Mercury EFI 225 on a TR-21 Triton
Do hydrofoils added to outboards really give a noticeable increase in fuel economy?
I don%26#039;t believe that it is a noticeable increase, but rather a slight increase in fuel economy. You Will be able to get up on plane quicker and with less throttle and you will be able to plane at a much slower speed then you could with out the hydrofoils.- How ever if most of your running is full or three quarter throttle, the hydrofoils are not in use at these speeds


This reflects my thoughts on the matter and there may be forces at play here in which I am not aware of. Your best option is go to a dealership and ask one of the mechanics that rig the boats out this same question- but don;t ask him in front of a salesman or the owner. Good luck!
Do hydrofoils added to outboards really give a noticeable increase in fuel economy?
I agree with dumdum.
Reply:When I worked as a Capt. for the USNPS we tried them out and found no increase, we stopped using them after 1 season.
Reply:I use a dole-fin on the outboard on my 2.8 meter inflatable. Adding it improved the performance of the boat dramatically. The boat comes up on a plane sooner and flatter and stays on a plane longer when slowing down. It also turns faster and is more stable in turns. That said, I have no clue as to whether it helps with fuel economy. I figure the boat uses the fuel it uses and that is that. On a motor of your size, rpms are the greatest culprit for fuel economy. Prop sizing is very important as is weight distribution in the boat. Once you reach hull speed on a plane, going any faster will cost more fuel than the added speed is worth.
Reply:Ditto for dumdum. Well said.
Reply:Interesting comments made but my thinking on this is that if the engine manufacturers found them to worthwhile they themselves would be marketing them and not leaving them to aftermarket sales...


Should i buy a boat that sank?

it%26#039;s a 34%26#039; 1987 sea ray silverton with all the ameneties, priced under $10,000. the problem is: it sank, my husband says the motor has been %26quot;pickled???%26quot; i am uncertain about buying the boat due to the expense that would be put into any repairs that it needs and what repairs could those be? please help
Should i buy a boat that sank?
I would be very careful about it, you should get a professional to look at it as there can be a lot that you may not see and it can get quiet expensive. Boat that sink need to have a complete over haul, yes the motor would be a worry, was it running when it sank? if so that can be a concern, how is the inside? what kind of water damage and how long was in under for? There are so many questions that need to be addressed when buying a sunken vessel that i suggest you do get a professional to look over it, it might not be worth it if it needs extensive repairs.
Should i buy a boat that sank?
Yes the boat is worth buying. Any 34%26#039; boat priced under $10,000 is worth buying. You can replace the hole in the hull if there is one. You probably will have to pay a lot more money than you bought the boat to get the boat running.
Reply:i wouldn%26#039;t cause if it sank then how it boat so no
Reply:If it was in salt water, I wouldn%26#039;t want to pay anything for the engine at all. Not familiar with the term %26quot;pickled%26quot;, but what I do know is that, in fresh water, as long as it%26#039;s submerged oxidation (rust) can%26#039;t occur. Now, I don%26#039;t really know how long is %26quot;too long%26quot;. But if the engine is running now, and has good compression, it%26#039;s probably no worse for having been underwater.





On the hull, assume anything electrical is junk - devices, wiring, switches, the whole ball of wax. Some of it might still be functional.





If you (and/or your husband) really enjoys working on boats it could be a real bargain. If you have to pay others to do the work, then who knows?





If you decide to believe that your husband knows what he%26#039;s talking about, I wouldn%26#039;t dispute his opinion.
Reply:boat, definition: standing under a cold shower tearing up $100- notes. OR hole in the water you shovel money into. It sank, it%26#039;s 35Ft long. That%26#039;s a lot of boat to check for damage and corrosion. Why did it sink? is it wood, steel, cement, fiberglass? has it been in salt water? What motor does it have-if not diesel-walk away NOW! Expect to HAVE to replace all electrics and electronics, the motor and gearbox. Expect some serious hull maintenance-research caulking and painting costs, docking fees marina costs, etc. Find out the motor horsepower, divide by abt 4, and that will give you Gallons per hour of fuel consumption. Can you afford to run it? It isn%26#039;t the purchase price, but the storeage, running and maintenance that matters. Then consider: When will you use it, and what will having/using it prevent you from otherwise doing?
Reply:yes and no, if your husband is handy , then yes- if you need people to fix it for you then no. Water doesn%26#039;t hurt fiberglass, but the electrical and mechanical stuff will more than likely need to be replaced, if the engine has been pickled properly then you should be okay, but all the wiring and stuff will need to be replaced, what state do you live in , depending on where the cost could be more than the boat is worth also where you live makes a difference. the boat will cost you more than you think, if you are hying it for you then you should be okay, but if you are thinking of doing it for resale and a profit then definitely no.....good luck
Reply:Debra,


If this is your first boat, under no circumstances buy it. That is my advice. Your husband will have too much to learn and it will be a very expensive lesson.





Regards,


Dan
Reply:It is going to take a lot of work to get it back in shape. If the engine is a diesel, it is worth trying to save it, gasoline engine is not worth the effort. Expect to spend at least a year putting it back into shape. Good luck.
Reply:I would definitely get a:





MARINE SURVEY





It%26#039;s a good idea to have a qualified marine mechanic thoroughly inspect the boat before purchasing it. To find a marine surveyor call either the Society of Accredited Marine Surveyors - SAMS. If you are going to do it yourself check the spark arrestors and plugs, alternator, belts, hoses, strainer, blower, shift cables, engine alignment, etc. Analyze the oil and make sure it is not cloudy or gritty Cloudy oil can mean the engine block is cracked.
Reply:I did this once. After rebuilding the motor then the Starter and the Alternator went out and then the wood was getting soft where the engine motor mounts were bolted to the floor causing them to pull Thur. it was way more work then I thought and really costly. Just getting a rebuilt engine is alot of major bucks


So I would say no.
Reply:if its a real good deal i would
Reply:Don%26#039;t let the price influence you. Sure it%26#039;s a bargain, but only if your knowledgeable in what it takes to get this boat up and running. You might purchase on a contingency basis, for %26quot;concealed damages%26quot; Good Luck!


How do i get past the fisherman on poptropica?

On poptropica it is on Shark tooth Island and I cant get past the fisherman.
How do i get past the fisherman on poptropica?
Try asking in the game area, good luck.


Anyone done an ignitio swap from a points system to electronic on a 1974 Mercruiser boat engine?

This Mercruiser is a 4 cylinder inline Chevrolet. The unreliable points system is a weak link.I am wondering if there is an electronic distributor for this unit.
Anyone done an ignitio swap from a points system to electronic on a 1974 Mercruiser boat engine?
I don%26#039;t know if mercury came out with a kit but there were automotive kits available back in the day. Good luck! Maybe J.C. Whitney can help. or echlin at NAPA.

flowers get well

New boater with thump in engine, help?

We just bought a used boat and brought it out on the river today. It felt at first as if we were hitting the occasional log, a thump in the hull of the boat, but then discovered it was the engine making that clunk/thump when operated at more than idle speed. It runs fine at idle but if pushed any further than that we%26#039;ll get that clunking, almost seems like it%26#039;s an automotive engine not hitting the right gear. Also it%26#039;s not hitting it%26#039;s full speed when cranked all the way up, it did seem fine once for a few minutes and there was no clunking but I had to idle down and it started doing it again. It%26#039;s an onboard OMC Cobra 98, I was told the engine was rebuilt about 5 years ago. The hull is fine no damage, but I am new to boating and need some idea%26#039;s about what the problem might be?
New boater with thump in engine, help?
Worn clutch dog. Parts are pretty costly especially if the forward gear is worn, too. On some models, you can get a good result by turning the dog around since you don%26#039;t usually put near as much pressure on it in reverse. Good luck.
New boater with thump in engine, help?
I agree that the problem is in the stern drive, not the engine. This is common in both OMC and Mercruiser. Volvo uses a different design. In your case it might be in the lower unit shift cable, so I%26#039;d check that first. In this case experience counts when making the repairs. A good OMC Cobra mechanic should be able to get this fixed right. Proper adjustment of the shift cable, after the repair, is required. OMC has some special tools to Help get it right. I don%26#039;t think the %26quot;full speed%26quot; problem would be explained by this %26quot;clutch dog problem. I%26#039;d need more info like RPM and prop size on that question. Good Luck!!!
Reply:Check and see if the thump is coming from behind the engine pre-transom. If so possibly a cracked flex-plate or a bad engine coupling. Expect to pay $500-$800 or more for repair. Mine is in the shop right now for this repair :( Hope I have helped. Good Luck!

Impacted Wisdom Teeth