RULES FOR OPEN DIESEL COMBAT
1.1. Engine: Any diesel engine up to .21 c.i.d.
1.2 Only suction fuel systems are permitted.
2.1 Aircraft: Any design is permitted.
3.1 Pull test: 25 lb.
4.1 Lines shall be a minimum .015" diameter, stranded
type, with a length of 52'-3" measured from the handle grip to the
fuselage, plus or minus 6 inches.
5.1 Speed limit: 70 mph = 6.4 seconds/2 laps.
6.1 Number of models. One model per match.
7.1 Pit crew. Two pit crew are allowed per contestant. A contestant
may start his own engine.
8.1 Officials: A contest shall be run by a circle marshal who
shall be the overall timekeeper, plus one scorer per contestant.
9.1 The match: One minute for engine starting and launching. The
5-minute match clock is started as the second plane launches or at the end
of the one minute, whichever comes first. The match lasts 5 minutes.
Engines must be started by hand.
9.2 Scoring: One point is deducted for each second a contestant's
plane is on the ground during the 5 minute match. 50 points are awarded
for each cut of their opponent's streamer or string with knot. There are
The match shall continue after a mid-air collision or line break. Lines
may not be changed during a match.
10.1 Contest Procedure: Each contestant shall compete in 5 rounds.
2 points for a win, 1 point for a tie, 0 for a loss. The top 4 flyers will
than compete in 2 semifinals and a final to determine the winner.
10.2 Combat Site: A 5 foot radius pilots circle and a concentric
65 foot radius safety circle.
Northwest rules are coordinated and sponsored by Flying Lines,
the independent voice of Northwest Control-Line model aviation.
Suggested donation is $5 per year.
2456 Quince St.
Eugene, OR 97404
E-mail for more information
Flying Lines home page
Back to Northwest Rules Page