Post by Dave Seay on Feb 9, 2009 7:40:01 GMT -5
My name's Dave Seay and I've volunteered to be the Contest Directory for our Electric Contests. I am proposing a new format for these contests, the rules for which are posted below. I got the idea for this approach from a series of threads on the RC Group's Electric Sailplane forum and, with a few minor changes, have adapted it for our use.
The overall idea is to make the electric contest open to all who what to participate. There are no categories or classes (at this point) and the scoring tries to level the playing field between high and low end planes.
We will be discussing this at the next club meeting, Feb 19th but I want to get the info out to you as best I could before hand.
Now, when you read the rules, you might think this is a little confusing but it is really quite simple. You fly for 10 minutes a round. You can fly any plane with any motor and any batter setup. You can run your motor as often and as long as you want. Your timer needs to track your flight time, motor run time and the number of motor starts. You report these and how far you landed from the designated landing point to whomever is scoring and they handle the rest.
Feel free to post comments here and/or at the next club meeting.
Thanks,
Dave
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LISF X5J CONTEST RULES
1. Any electric powered sailplane or other electric aircraft ‘legal’ to fly at our field can enter the contest. Any battery arrangement is acceptable.
2. The number of rounds will be set by the CD with a minimum of four (4) rounds needed to declare a valid contest and the norm being 5 rounds.
3. Flight times per round will also be set by the CD and can vary from round to round. One point is scored per second of flight time and one point deducted for each second over the target flight time. Flight time starts when the plane leaves the pilots hand and ends when any piece of the plane makes contact with the ground. The maximum points possible on any single flight are 60 pts X the target duration. Round the flight time to the closest second. The normal target time for a round will be 8 minutes.
Example (using 10 minutes as the target duration):
9min. 50 sec. flight = 540 points + 50 points = 590 points
10 min. 4 sec. flight = 600 points – 4 points = 596pts
4. Motor run time is unlimited but subtracted from the flight time (note para 4 below).
Example:
600 flight points - 19 motor run points = 581 total round points
5. Motor handicap: brushless 95%, brushed Cobalt and brushed car motors 75%, Ferrite 45%, and Outrunners with a 28mm or less bell diameter and 17mm length 68%, Speed400 30%. Actual motor run rounded to the closest second is multiplied by the motor handicap percentage. Round this calculated value to the closest 1/10th of a second.
Example:
Cobalt motor run 34 .6 sec. = 35 sec. X 0.75 = 26.25 sec. = 26.3 points.
Brushless motor run 41.3 sec. = 42 sec. X 0.95 = 39.9 sec.
6. Landing points are measured from the center of the landing circle to the nose of the plane. For each foot from the center point subtract 1 point from max of 30 points.
Example:
Plane wing tip is 12 ft from the designated center point. 30 – 12 = 18 points.
7. You may restart your motor as many times as needed but on the second motor start you will no longer be able to score any landing points.
Contestants will not have to do any of the above math shown in the above examples. The CD’s spreadsheet will handle all of that.
Timers need two stopwatches, one for flight time and one for motor run time. Pilot and timer should work out a signal as to when he is starting the motor (i.e. "restarting motor...on...off") so the timer can track that time.
Comments or questions? Post something here, send me a PM or email me using the links to the left near my avatar.
The overall idea is to make the electric contest open to all who what to participate. There are no categories or classes (at this point) and the scoring tries to level the playing field between high and low end planes.
We will be discussing this at the next club meeting, Feb 19th but I want to get the info out to you as best I could before hand.
Now, when you read the rules, you might think this is a little confusing but it is really quite simple. You fly for 10 minutes a round. You can fly any plane with any motor and any batter setup. You can run your motor as often and as long as you want. Your timer needs to track your flight time, motor run time and the number of motor starts. You report these and how far you landed from the designated landing point to whomever is scoring and they handle the rest.
Feel free to post comments here and/or at the next club meeting.
Thanks,
Dave
--------------------------------------------------------
LISF X5J CONTEST RULES
1. Any electric powered sailplane or other electric aircraft ‘legal’ to fly at our field can enter the contest. Any battery arrangement is acceptable.
2. The number of rounds will be set by the CD with a minimum of four (4) rounds needed to declare a valid contest and the norm being 5 rounds.
3. Flight times per round will also be set by the CD and can vary from round to round. One point is scored per second of flight time and one point deducted for each second over the target flight time. Flight time starts when the plane leaves the pilots hand and ends when any piece of the plane makes contact with the ground. The maximum points possible on any single flight are 60 pts X the target duration. Round the flight time to the closest second. The normal target time for a round will be 8 minutes.
Example (using 10 minutes as the target duration):
9min. 50 sec. flight = 540 points + 50 points = 590 points
10 min. 4 sec. flight = 600 points – 4 points = 596pts
4. Motor run time is unlimited but subtracted from the flight time (note para 4 below).
Example:
600 flight points - 19 motor run points = 581 total round points
5. Motor handicap: brushless 95%, brushed Cobalt and brushed car motors 75%, Ferrite 45%, and Outrunners with a 28mm or less bell diameter and 17mm length 68%, Speed400 30%. Actual motor run rounded to the closest second is multiplied by the motor handicap percentage. Round this calculated value to the closest 1/10th of a second.
Example:
Cobalt motor run 34 .6 sec. = 35 sec. X 0.75 = 26.25 sec. = 26.3 points.
Brushless motor run 41.3 sec. = 42 sec. X 0.95 = 39.9 sec.
6. Landing points are measured from the center of the landing circle to the nose of the plane. For each foot from the center point subtract 1 point from max of 30 points.
Example:
Plane wing tip is 12 ft from the designated center point. 30 – 12 = 18 points.
7. You may restart your motor as many times as needed but on the second motor start you will no longer be able to score any landing points.
Contestants will not have to do any of the above math shown in the above examples. The CD’s spreadsheet will handle all of that.
Timers need two stopwatches, one for flight time and one for motor run time. Pilot and timer should work out a signal as to when he is starting the motor (i.e. "restarting motor...on...off") so the timer can track that time.
Comments or questions? Post something here, send me a PM or email me using the links to the left near my avatar.