These are called “winding arbours” or winding points. Each winding arbour has a function. The number of winding arbours corresponds to the number of gear trains (or sets of gears) on a clock.
A clock will run just fine if the time side is wound without winding the strike side, assuming that you do not like the sound of a strike or the strike bothers your guests. However, it is always optimum for the general wear of a clock movement to wind both sides of a striking clock. Running time.
I recommend wearing cotton gloves to preserve the finish of the case. Next, turn the key clockwise. If it will not turn clockwise, turn counterclockwise. Yes, some clocks wind clockwise and some counterclockwise. Do not force the key; wind it with minimal force and wind the arbour until it winds no further.
The wind is coming from noon on the clock and you wish to sail to the area between 10 on one side and two on the other side. Unfortunately, this area is normally “dead area,” meaning that it is impossible to sail directly into it. Instead, you will have to zigzag across the face of the wind to arrive at your destination.
There are two ways to determine which end of the line is favored: The simple way is to luff your boat head-to-wind in the center of the line and determine toward which end of the line your bow points more closely. Or, imagine a line extending perpendicular from the starting line.
0:132:43Sailing - Wind Direction - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe closest you can sail to the wind is at 2 o'clock.MoreThe closest you can sail to the wind is at 2 o'clock.
Once you know the average wind direction you will be able to see whether gusts approaching you are coming from right or left of that direction. If right then expect a right shift. If left then expect a left shift.
Unless the wind is blowing from directly astern (over the back of the boat), the sails propel the boat forward because of “lift” created by wind blowing across them, not by wind pushing against them. As you steer more toward the wind direction, you trim the sails in tighter to keep them full, and keep generating lift.
Is it Faster to Sail Upwind or Downwind? For most sailboats, downwind is a faster point of sail. This is because you can deploy your spinnaker, adding a lot more sail area, which moves the boat along better.
Beam ReachBeam Reach – This is the fastest and easiest point of sail. The windis on the side of your boat (beam) and you'll sail with your sails outhalf way.
Wind direction is usually reported in cardinal (or compass) direction, or in degrees. Consequently, a wind blowing from the north has a wind direction referred to as 0° (360°); a wind blowing from the east has a wind direction referred to as 90°, etc.
A wind indicator is used on ships and boats to point the direction of the wind. It is also known as a windex. Wind indicators use the technology of weather vanes to point the correct direction of wind in the oceans.
The most basic way to read telltales is to get the yarns on both sides of the sail streaming straight back. If the leeward one stops streaming, head up and sail closer to the wind. If the windward one stops streaming, fall off.
Sailing downwind (parallel to the wind, like the boat at left) is easy to understand: the wind blows into the sails and pushes against them. The wind is faster than the boat so the air is decelerated by the sails. The sails push backwards against the wind, so the wind pushes forward on the sails.
1:417:16How to sail Downwind | Free Video Sailing Course #6 - YouTubeYouTubeStart of suggested clipEnd of suggested clipBut you have to be careful that the shroud does not push too much into the sail. So you have to stopMoreBut you have to be careful that the shroud does not push too much into the sail. So you have to stop the boom just before it hits the shroud. The jib already collapsed at the transition.
Most cruising catamarans are not equipped with very powerful winches so sheeting in upwind will require a good deal of grunt on the winch handle.
A sea breeze is caused by a "thermal" -- a rising column of hot air over sun-heated land. As the air rises, it is replaced by cooler, moist air from the sea (or lake), which is in turn heated by the land and uplifted. This moist air condenses into cumulus clouds over the land. A sea breeze typically fills in first offshore, and then moves toward land as a mini-front with a clearly discernible breeze line. A seabreeze will develop faster and blow stronger when all (or most) of the following conditions are met: hot day, cool water, little cloud cover and a gradient breeze blowing in the seabreeze direction. Once the sea breeze is established, it will tend to shift to the right because of the Coriolis effect. A typical seabreeze may move roughly 5 degrees per hour. So, when the seabreeze is building, look for a persistent veering shift. That's why you generally want to play the right side of the course when sailing in the Northern Hemisphere. Late in the afternoon, however, as the sun begins to sink and the surface heating is reduced, the veering will stop.
You can notice sheer on your instruments, or by differences in the way your sails set from tack to tack. In general, if the wind aloft is sheered to the right, you can expect a subsequent, similar shift in the wind at water level.
In the Northern Hemisphere, the gradient wind flows clockwise around centers of high pressure (usually fair weather) and counter-clockwise around centers of low pressure (usually bad weather). Simply speaking, air flows from high-pressure to low-pressure areas. Wind velocity is determined by the rate of pressure change; i.e. by the distance between isobars on a weather chart. The closer the isobars, the stronger the wind. The direction and speed of gradient winds stay relatively constant throughout the duration (several hours) of most races. The major exception is when a "front" is approaching. A front is the boundary line between two large masses of air. When you have a front to your west, expect a major change in the wind.
Upwind Strategy. Strategy is a plan you develop for how to get around the race course as quickly as possible, in the absence of other boats. When racing upwind, your strategic plan must include such factors as wind shifts, differences in wind velocity, current and waves. . It is very important to use your strategy as a guide while you are racing.
Wind direction: Changes in the direction of the wind generally have more of an impact on strategy than any other factor. As we've seen in the Basics chapter, even a small windshift changes the ladder rungs and can produce large gains or losses. .
After all, the wind makes a sailboat go, and it plays a very important part in the outcome of almost every race. The breeze you race in is actually composed of several different influences: . 1) gradient wind - caused by large weather systems; . 2) thermal wind - caused by local heating; and .
Wind velocity is determined by the rate of pressure change; i.e. by the distance between isobars on a weather chart. The closer the isobars, the stronger the wind. . The direction and speed of gradient winds stay relatively constant throughout the duration (several hours) of most races.
The left keyhole is for winding the strike mechanism and the right one is for the clock’s mainspring . Start on the left and wind both completely. If the clock has run down all the way, it’s extremely important to wind it before touching or moving the hands.
Keep in mind that, ten minutes before each chime striking point (20 minutes past and 10 minutes ’til the hour), the gears and levers of the striking mechanism begin to fall into the correct positions. ...
To set the time, gently turn the minute hand clockwise to the correct time, stopping at each hour and half-hour point to allow the bells to strike their full count. Never move the hour hand manually — all adjustments should be done by carefully moving the minute hand.
For safety’s sake, it’s best to do all adjustments when the clock reads 5-to-15 minutes past the hour or 25-to-15 minutes before the hour. Now let’s look at how to wind a clock regularly:
Every Chelsea clock leaves our factory fully wound. However, if you live outside of the Eastern Standard time zone, have purchased a vintage clock or have inherited a family heirloom, you may need to initially set the time yourself. Therefore, let’s start with how to correctly wind chime clocks for the first time.
Turning Into the Wind 1 Before coming about, ask yourself what you are trying to achieve by doing so. Where do you want the boat to be when you have completed your turn? It’s a good idea to pick a spot on land and aim the boat toward that spot for reference. Remember, you must turn the boat at least 90 degrees or you may stall in the wind (put yourself in irons). 2 Push the tiller smoothly but firmly about half the distance toward the sail while letting the mainsheet out about one foot. 3 As the boom swings over, duck and move to the other side, opposite the new sail position. 4 Exchange the mainsheet and tiller extension in your hands. The mainsheet should always be in your forward hand, the tiller extension should always be in your aft hand. 5 Straighten the tiller after you have completed your turn and the boat is moving toward your reference point.
Run. A run takes place when the boat is directly downwind and the breeze is pushing the boat from behind. In this Case, you will feel very little breeze since the wind is coming from behind the boat. The sail telltales will not be used on a run since alignment is not possible.
Place your maìnsheet and the tiller extension on the correct side of the boat for sailing. Just act as if the boat is really in the water. Everything should be where it would be if you were sailing. Watch the surf. You’ll note that it comes in sets of waves and that there is a space of time between the sets.
To land, let the sail out slightly to reduce your speed; come about just before the bows hit the dock; let the sails out and grab on to the dock.
A beam reach is when the wind is coming directly across the side of the boat at a 90 degree angle. Once again, align the telltales and adjust the sail by bringing it in until it just stops luffing. A beam reach is also known as a medium reach.
The highest most catamarans can point into the wind and sail efficiently, is an angle between 35 and 50 degrees off the wind. When sailing on this point of sail, the wind will be coming across the bows of the boat and the telltales should be pointing straight back parallel with the water.
If the boat hits a wave, the course may be altered enough so that the wind will be able to sneak around the side of the sail and force it to the other side, causing the boom to snap across. There are symptoms of an upcoming gybe. The boom will begin to waver and slowly rise. Be prepared for a gybe.
On a clock with three arbours, the centre arbour winds the time train and the left arbour, the strike side and the right, the chime side. On some clocks, there is a smaller hole on the clock face near or above the 12 o’clock position. It is also an arbour but a smaller one used for regulating the speed of your clock.
Two ends are required because the speed adjustment arbour is smaller than the winding key arbour.
The smaller hole in the loop end of the “2” on the number 12 is for regulating the clock.
An 8-day clock usually requires 14 half turns of the key as the arbour does one complete turn per day. Mainspring ratchet and click. The ratchet locks the spring in place during each wind of the key. Allow the key to gently rest back onto its click.
Each winding arbour has a function. The number of winding arbours corresponds to the number of gear trains (or sets of gears) on a clock. For example, if there is one hole it is a time-only clock; 2 holes mean that it is a time and strike clock, that is, it strikes the appropriate hour on ...
Winding your mechanical clock. If the dial is covered by a glass door, open it to access the face. Insert the key into one of the winding arbours and with your non-dominant hand, steady the case while you wind the clock. I recommend wearing cotton gloves to preserve the finish of the case. Next, turn the key clockwise.
Wear cotton gloves to steady the weights while they are being pulled up to preserve the brass finish on the weight shells. For those clocks that wind with a crank key, insert the key into each winding hole on the clock face and crank slowly till the weights reach the top .