Southwest Regionals Eloy
Classic Towline Rules: [A1 follows same rules except for model size - use the old A1 size rules]:
1. Model requirements and towing.
A. Builder of the Model Rule applies.
B. Two models allowed per contestant and may be of any design and type of construction.
C. The combined projected surface areas of the wing and horizontal stabilizer shall not exceed a total of 750 sq. in. (48.39 sq. dm.). No restrictions on model weight.
D. Towing, pennant and flight controls.
a. Towline maximum length is164 ft (50 m) when under a 4.41 lb (2 kg) tensile load.
b. Wire towline not allowed.
c. A tow reel or winch is permitted but may not be tossed or thrown unless obviously necessary to avoid certain major damage or destruction of a model. If the reel or winch is thrown in such circumstances, an attempt shall be recorded (as per 3.E. below). If thrown with other intent, the timer shall record a zero flight score for the attempt.
d. A pennant with minimum area of 38.75 sq. in. (2.5 sq. dm.) must be attached to the towline below the tow ring.
e. Straight-tow only. Zoom launches are allowed. Circle-tow hook functions and bunting are not allowed.
f. Timer-actuated flight settings are not allowed except for purposes of dethermalizing a model.
g. The rudder(s) may be caused to move from a straight tow position to a glide position upon release of the tow ring from the tow hook.
2. Official flights.
A. All official and unofficial flights are attempts.
B. Six attempts are allowed to make three official flights of 40 seconds or more.
C. Timing of a flight attempt begins with release of the tow ring from the tow hook signaled by a fallen pennant and ends with termination of the flight.
D. To achieve a flight score, an attempt must be launched, towed and released into free flight during the official clock-time of the contest.
E. Flight maximums for the three official flights shall be 2, 3 and 4 minutes attempted in that order.
3. Unofficial flights.
A. Flights of less than 40 seconds are unofficial but may be recorded as official if requested immediately by the contestant.
B. After launch, the glider returns to the ground without release of the towline.
C. Glider part(s) are dropped during launch, tow or flight, including fly-off flights.
D. The instant of towline release from the tow hook cannot be established.
E. While towing, the contestant loses contact and control of the towline and fails to regain control, and/or another person takes control of the towline.
4. Repeat flight attempts.
A. Attempts for official or fly-off flights may be repeated if “B”, “C” or “D” below occur prior to the end of the contest. However, if the glider continues in flight, the resulting flight time may be recorded as official if requested by the contestant.
B. At launch, the glider collides with a person other than the launcher.
C. During tow, the model collides with another model in free flight (but not with a model being towed or with a towline) and towing cannot continue normally.
D. During free flight, the glider collides with another model or another towline.
5. Fly-off flights.
A. If the sum of a contestant’s three official flights equals the maximum allowed (540 seconds), fly-off flight attempts may begin with the maximum time 240 seconds (four minutes) and shall continue at 240 seconds for each attempt until a maximum time is not achieved.
B. One attempt is allowed for each fly-off flight (see also 4.A. above)
6. Weather, terrain and other conditions.
A. Because of actual or predicted adverse weather, terrain, flying conditions or other safety concerns, the Contest Director may modify the flight maximums for official and/or fly-off flights but with appropriate notice and in a manner to protect already recorded flight scores.