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the Windsong
http://www.hobie.com/au/en/forums/viewtopic.php?f=14&t=2964		 Page 1 of 2
Author:  Big Rod [ Wed Feb 01, 2006 7:38 pm ]
Post subject:  the Windsong
can anyone explain to me what the makes the buzzing/humming noise while riding just above the waterline

theres no other song like the wind song
Author:  mmiller [ Wed Feb 01, 2006 8:42 pm ]
Post subject:  Humming?
Likely the rudders, but it can also be wires.

See this Tech note on rudder shaping:

http://www.hobiecat.com/support/tech/hum.html
Author:  Hobie Nick [ Thu Feb 02, 2006 1:27 pm ]
Post subject: 
Short answer is rudder cavitation.
Author:  Jeff Peterson [ Sat Feb 04, 2006 11:44 am ]
Post subject: 
The actual answer is sailor elves!

These elves live in the hollow space, inside your hulls. Once they move in, they're nearly impossible to evict. They not only humm they're annoying elf songs, THEY STEAL BEER! I've put down numerous beer cans on my tramp, for just a moment while I adjust some equipment, then find the beer is gone! They also like to sneak up behind you and knock your hat off into the lake, all without being seen.

I've called Orkin, but the girl that answers the phone there, says they can't help.
Author:  scottshillsailor [ Sat Feb 04, 2006 2:05 pm ]
Post subject: 
Actually they are called mannequilla. Mannequilla are little bears that live in the river, they are about the size of an otter and locate their food (small children) through echo location which is what causes rudder hum on hobies and daggerboard hum on sunfish. The only way to prevent this problem is to put bottom paint on the boat. If the mannequilla is close enough to cause a rudder hum he is close enough to the boat to attack any unsuspecting children who fall in the water before they have a chance to escape. The only way to see a manequilla for any length of time is to spotlight them on the river bank at night, they can also occasionally be spotted surfacing for air on the river during the day but only in rare instances. While mannequilla love to eat small children the only real danger adults face from these illusive creatures is the loss of boat speed. the loss of hats is due to operator error and the loss of beer is usually caused by the prior consumption of too many. I have spent two summers researching the behavior of manequilla so if you have any questions please dont hessitate to ask.
Author:  MBounds [ Sat Feb 04, 2006 7:56 pm ]
Post subject: 
How does mantequilla (which means "butter" in Spanish) get to be little bears?

I think it's the chupacabra!
Image

Either that or it's xanderwess after a heavy meal.
Author:  scottshillsailor [ Sun Feb 05, 2006 3:35 pm ]
Post subject: 
Mannequilla have not been discovered in Spain, they only live in the coastal region of the Carolinas, somewhat like Venus Fly traps. Mannequilla evolved from the bears that used to be dominant in the coastal regions of nc, when humans started moving into the area and converting the forests into farms, the bears were forced out of their natural habitat, and through many years of adaptation they developed gills and slicked back, oily fur that lets them glide easily through the water. I have done some research trying to figure out if there was indeed a connection between spanish butter and our beloved bears of the river and discovered that there is a difference in the pronunciation as well as spelling evidentally in spanish mantequilla is pronounced mant-ay-key-ya and in Eastern NC, Mannequilla is pronounced man-a-kwil-a. obviously there is no connection.
Author:  Big Rod [ Mon Feb 06, 2006 10:42 am ]
Post subject: 
I also have heard that the humm attracts dolphins when in the ocean, i wouldn't know for sure because I am currentyl limited a lake. Is this true.
Author:  scottshillsailor [ Mon Feb 06, 2006 11:08 am ]
Post subject: 
I have also heard that porpises are attracted to vibrations in the water and have seen them swimming around the boat while I was beating on the side, however I dont think they were attracted by the noise. just to clarify, Mannequilla are not necessarilyattracted by the vibrations, they are the cause of them, however, it is possible that mannequilla are attracted by the echo location of others, but due to their illusive nature it is difficult to directly observe their actions.
Author:  Claus [ Mon Feb 06, 2006 2:48 pm ]
Post subject: 
Could this go to the FAQ please? :lol:
Author:  Jeff Peterson [ Fri Feb 10, 2006 9:24 pm ]
Post subject: 
It appears that there are two, unrelated causes of humm. In the Nordic climates, it is elf humming. In the southern temperate areas, there may be other additional causes.

Does Europe have the same problems? And what about South Africa and Australia?
Author:  DVL [ Sat Feb 11, 2006 5:38 am ]
Post subject:  HUM, Hum
Wow, the northern sailors are bored, and the southern ones thinks its too cold. :roll: Too much time at work, not enough beer and socializing can also cause the hum, not from water & boats but in your head. :?
Author:  Hobie One Kenobi [ Thu Feb 16, 2006 8:45 pm ]
Post subject: 
I always thought that the humming was from the Humpback Whales swimming under my boat.
Author:  gree2056 [ Sat Sep 02, 2006 11:02 pm ]
Post subject: 
Sorry, I was bored and I have to revive this old topic.

As for the last post, I like the idea of whales swimming under me but for some reason I feel that there may be limited whales in the lake I sail on considering that is is only about 100 feet deep and the food source of giant squid is very limited.

I think it is the elves!!!
Author:  hobie1616 [ Sun Sep 03, 2006 3:53 pm ]
Post subject: 
In West Maui the humpbacks cause the humming from November to April. Menehune riding sea turtles cause it the rest of the year.
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