Mike Hazel's proposed change to the Northwest F2D Proto Speed rules has been approved.
The proposal was develloped after discussion among active F2D Proto fliers. The intent of this proposal was to clarify the muffler specifications in light of recent changes in the rule regarding mufflers in FAI F2D (Combat), upon which the F2D Proto engine rules are based.
Voting concluded on March 25, 2011
Summary of proposal:
Changes the wording of rule 4, indicating that a legal F2D muffler must be used, and that the only modification allowed is to bring older mufflers to current F2D specifications. Grandfathers 2010-legal mufflers for the remainder of 2011.
Rationale:
The FAI has recently changed the F2D Combat rules to require a smaller exit opening on current and legal mufflers. This change obsoletes mufflers heretofore in use. Since one of the purposes of this event is to provide a secondary use for surplus or obsolete F2D Combat engines, the Speed rules should not outlaw engines with no longer currently legal mufflers. This change allows modification of older mufflers to current standards, and gives one year before the new F2D standard must be met on all mufflers.
The rule change is effective immediately and will apply to all Northwest contests unless specified otherwise by contest organizers.
1. PURPOSE: This event is intended for all fliers and pit crews interested in a simple Speed event which uses unique airplanes of a set wing area and profile fuselage, that is restricted to FAI F2D-legal engines.
2. All AMA control-line unified speed rules apply, except as follows:
2.1. Airplane and the entire control systems shall undergo a pull test of 24G. Maximum model weight shall be 23 oz.
2.2. Lines are .014 solid music wire.Wire material shall be the AMA-required ASTM A228M spec wire. Minimum length is 52' 6" measured from the center of the handle to the center of the fuselage.
2.3 Minimum wing area not including the stabilizer and elevator shall be 100 square inches.
2.4 Airplanes must have a vertical tail fin.
2.5 Airplanes must have a canopy. Wood canopy is allowed but must have a colored outline defining the shape.
2.6 Airplane must have a two wheel landing gear with minimum diameter wheels of 1 inch. Wheels must be spaced at a minimum of 2 -1/2" apart.
2.7 Airplane finish must include a colorful pattern or be painted a solid color. No all-clear finishes will be allowed.
2.8 Airplane must have external controls, the centerline of the bellcrank may be centered inside the fuselage but the bellcrank must be exposed when deflected.
2.9 Terminations of the lines to a bellcrank must be double loop construction when used with a metal-to-metal contact.
3. Engine: Any design or make of piston glow F2D -legal engine is allowed, maximum engine displacement is limited to .1525 cubic inches (2.5 cc) . Modifications are limited to removing material from the engine only. (Diesel legal F2D engines are note allowed)
4. Muffler: A current and legal F2D muffler must be used on the engine. No modifications are allowed to the muffler except to bring older mufflers to current specifications. Mufflers F2D-legal in 2010 will be allowed until Dec. 31, 2011.
5. Fuel tank: Any design of fuel tank is allowed, including pressure systems.
6. Fuel: Glow fuel shall contain a maximum of 10 percent nitromethane with 20 percent lubricant and the rest methanol. Glow fuel will be supplied by the contest management.
7. Timing: Timing will begin from the release of the model and end after eight (8) full laps have been completed. The pilot will have 1-1/2 laps after release to get into the pylon.
8. Flying handle: Adjustable handles are allowed.
1. PURPOSE: This event is intended for all fliers and pit crews interested in a simple Speed event which uses unique airplanes of a set wing area and profile fuselage, that is restricted to FAI F2D-legal engines.
2. All AMA control-line unified speed rules apply, except as follows:
2.1. Airplane and the entire control systems shall undergo a pull test of 24G. Maximum model weight shall be 23 oz.
2.2. Lines are .014 solid music wire.Wire material shall be the AMA-required ASTM A228M spec wire. Minimum length is 52' 6" measured from the center of the handle to the center of the fuselage.
2.3 Minimum wing area not including the stabilizer and elevator shall be 100 square inches.
2.4 Airplanes must have a vertical tail fin.
2.5 Airplanes must have a canopy. Wood canopy is allowed but must have a colored outline defining the shape.
2.6 Airplane must have a two wheel landing gear with minimum diameter wheels of 1 inch. Wheels must be spaced at a minimum of 2 -1/2" apart.
2.7 Airplane finish must include a colorful pattern or be painted a solid color. No all-clear finishes will be allowed.
2.8 Airplane must have external controls, the centerline of the bellcrank may be centered inside the fuselage but the bellcrank must be exposed when deflected.
2.9 Terminations of the lines to a bellcrank must be double loop construction when used with a metal-to-metal contact.
3. Engine: Any design or make of piston glow F2D -legal engine is allowed, maximum engine displacement is limited to .1525 cubic inches (2.5 cc) . Modifications are limited to removing material from the engine only. (Diesel legal F2D engines are note allowed)
4. Muffler: A current and legal F2D muffler must be used on the engine. No modifications are allowed to the muffler
5. Fuel tank: Any design of fuel tank is allowed, including pressure systems.
6. Fuel: Glow fuel shall contain a maximum of 10 percent nitromethane with 20 percent lubricant and the rest methanol. Glow fuel will be supplied by the contest management.
7. Timing: Timing will begin from the release of the model and end after eight (8) full laps have been completed. The pilot will have 1-1/2 laps after release to get into the pylon.
8. Flying handle: Adjustable handles are allowed.
kb/mwh/jt.2008//revise/dm/ballot/1-1-09//revise/kb/ballot/1-1-10
This page was upated March 26, 2011