**These are all excerpts from other websites**
**and a note from me: there are two reasons to use split (or short) timing: timing rocks durling a game, and for training purposes. In a game, an accurate split time gives sweepers an early estimate as to the weight of the rock. In training, a curler can learn to throw specific split times to learn to throw consistent weight on demand - for example, if a curler knows the speed of the ice, they can throw the right weight on their first try. But! for split timing to work, a curler's delivery has to be smooth and consistent. If he or she pushes the rock, or drags their leg, etc then the timing won't be accurate. If you're using timing for sweeping - always make the final sweep decision based on your eyes and your own good sense!
More on weight/time training:
from curltech http://www.curlingschool.com/manual2007/Section6.html
Teams can use any communication and weight system they desire. Many teams use a numbered system to communicate draw weight and rock position. The 1-11 system works well.
1. Long guard
2. Mid guard
3. Close guard
4. Top twelve-foot
5. Top eight-foot
6. Top four-foot
7. Button/tee line
8. Back four-foot
9. Back eight-foot
10. Back twelve-foot
11. Just through
Interval timing is a scientific method that helps sweepers judge weight. A designated sweeper can time a shot between two points, usually the back line and nearer hog line. This "split" is the time it takes the rock to travel from back line to hog line and will indicate its ability to make it the rest of the way. This is a relative measurement. The time that is measured cannot be easily calculated into a long time due to the deceleration of the rock. The times can be used as a reference.
Example: On 24-second ice, one of your players normally throws a 3.65 second draw split (time from back to hog). If the same player throws a 3.90 second split, it is likely to need sweeping.
The following is rough example of converted split times on 24 second (hog to tee) ice.
Try to practice weight on a sheet that is in game condition. This practice should be done by position to create your "default weight". Leads should throw all eight rocks six feet short of the house as the sweepers can bring close if desired. Seconds, thirds and skips should practice a default weight in the top twelve or just short. If conditions are sub standard, usually slower, throw all eight rocks to the hog line. If you're not sure, and you have a practice partner, split-time the draws. The split time from back line to nearer hog line should be between 3.50 and 3.80 seconds. Take-out weight can be practiced by setting up a few rocks in the house and removing them. Again, split timing can help. The split on take outs should be between 2.75 and 3.10 seconds.
I already wrote on this method in the October 2000 Issue page 20 . The article was called : « Searching for Draw Weight ? » This method consist in starting the stopwatch at the back line and stopping it at the 1st hog line. One tenth of a second is comparable to half of a second regarding methods 1 and 2 or one tenth of a second approximately corresponds to 5 feet.
- Not only this method is usefull to the thrower, but also to the sweepers.
- It rapidely shows the technical differences within team-mates
- It identifies the slower and/or the faster rocks and help matching the rocks.
- This method may be used with any of the other methods.
- The time is very short.
- It demands a high level of concentration since we play with tenth of second