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Arizona Model Aviators |
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Club Events
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.25 Racing Rules
These rules are to allow Club racing in an established format. The Arizona Model Aviators R/C club has followed these rules for several years with few modifications. Presented here are the most current rules, which were voted on at the last race of the 2009 - 2010 season, held 5/16/2010. Rule changes are highlighted in red. Regular race season is Sept to Apr. The May race will be a season championship race for the top twelve point winners of the regular season. A special cash purse will be distributed to the First, Second and Third place finishers. If due to adverse weather a race is deemed not flyable by a pilot vote, it will be postponed to the following week. Rule changes for the next race season will be voted on by pilots who participate in the last regular season (April) race of the current season. For the Sept 2010 race, racing flight stations will be arranged such that all heat pilots will be clustered together to facilitate pilot to pilot communication. This is a one time experiment and at the end of the Sept race a special pilot vote will be conducted to see if this approach will be made permanent. RACING: - Course is 2 pylons, 500 feet apart, set parallel to the main runway - APC 9x5 propellers are to be provided by the host club, contestants may not furnish their own. The 1st propeller is free with entry, all others purchased from CD as needed - Propellers must be run as-is ** NO BALANCING IS ALLOWED ** - Fuel is provided by the host club (15%) and is supplied as part of the entry fee to each pilot and their aircraft for use during the race - Each aircraft must be de-fueled and re-fueled before each heat flown - At a distance of 300 feet measured parallel to the pylon centerlines, OSHA approved helmets must be worn per AMA racing guidelines - 2 pylon judges are located 90 degrees to the pylons behind the 300 foot line - Flagman and assistant flagman will control the start line and count laps for all aircraft (no lap counters are required) - Aircraft are allowed 90 seconds to start and take-off (flagman discretion) before countdown begins - A flying start is conducted with a countdown to “zero” announced to the pilots (A Radio Shack countdown timer over the PA system is preferred!), countdown will start at 30 seconds - 7 laps constitute a heat and must be flown by each aircraft in order to finish the heat - If an aircraft is past the start line before zero is reached in the countdown start, the aircraft is black-flagged and zero-ed for the round - Mid-air collisions result in both aircraft landing immediately. If this occurs before or during the race, both aircraft are black-flagged and will take a zero - Matrix will be generated before each round by random card selection by one of the pilots - 5 rounds each race - No guarantee to pilots that they will fly from the same pilot station - The scoring will be the done the same for all heats regardless of number of planes in that particular heat o 4 planes – 1st – 4 points, 2nd – 3 points, 3rd – 2 points, 4th – 1 point o 3 planes – 1st – 4 points, 2nd – 3 points, 3rd – 2 points o 2 planes – 1st – 4 points, 2nd – 3 points o 1 cut results in last place points (1 point) o 2 or more cuts result in zero points - Any tie for the top 3 positions will result in a fly-off or coin flip as agreed to by the pilots - Awards presented for 1st through 3rd place finishers - Engines of the top finishers can be and will be checked for “stock” condition
AIRCRAFT: Aircraft shall be marked according to Academy of Model Aeronautics Pylon Racing Rules (see below): 10. Aircraft Markings 10.1. Registration numbers. Registration numbers shall consist of the last two or three digits of the pilot’s AMA number, preceded by a capital “N” and followed by the first letter of the pilot’s last name. Alternatively, registration numbers may consist simply of the pilot’s full AMA number. Letters and numbers shall be clearly legible, at least one (1) inch high, and located either on the top of the starboard wing panel or on both sides of the fuselage, behind the wing.
All aircraft must be a minimum of 400 square inches to qualify. The current list of aircraft that are allowed are: Model-tech .25 size P-51 – Almost Ready to Cover (ARC) - Slope or electric versions will not be allowed. - Any color scheme can be used - No enhancements are allowed that might contribute to the speed of the model World .25 Combat Series Aircraft – Almost Ready to Fly (ARF) - Spitfire, YAK, P-47 and Zero aircraft qualify - Only allowed modification to airframe is to add a tail wheel - Covering can be stripped/re-covered in any scheme - Canopy installation is optional - No other enhancements are allowed that might contribute to the speed of the model SuperStitch’n .25x400 Club Racer – Built from Plans - Kits are available from Kenny Kear - Aircraft must be built and outfitted per the plans - Go/No-Go gages will be used to qualify aircraft - Main landing gear wheels shall be min 2” in height and min ½” in width - Spinner nuts shall be metal with 1” min diameter and 1 1/4” max diameter Any 1/12th or larger Scale Warbird - ARF, ARC, kit or scratch built - Fixed Gear only, No retracts - Single engine - Pilot has responsibility to prove to the CD that the plane is 1/12th or larger scale warbird in all dimensions (ex. no profile fuselage) - Scale dimensions include wheels and spinners
Aircraft – General Comments: - ARF's color schemes can be modifed - Stock wheels and spinners can be replaced with same sized aftermarket components - Aftermarket wheels must be equal to or greater than the original width - A single declared backup is allowed, it must be on the same frequency - All aircraft must be available for technical inspection which will take place prior to the Pilots meeting ENGINES: - ONLY .25 sized engines are allowed - Engine must be commercially available today, from multiple retail outlets - No aftermarket add-on equipment is allowed - The only pressure allowed is muffler pressure supplied by the manufacture’s pressure fitting on the muffler directly to the tank with no check valves allowed - Side Exhaust, Front Intake 2 Stroke Engines only - No pipes, only the stock manufacture’s muffler allowed and must be in ORIGINAL STOCK configuration - Muffler baffles can be removed - Approved Engines for 2010- 2011 Race season OS, Irvine, Webra, GMS, Fox For Webra engines: The only approved mufflers are what are commercially available as of May 2009 RADIOS: For the 2010 - 2011 season, only 2.4 GHz radios are allowed except for any pilot who flew a 72MHz radio in the 2009 - 2010 season.
For the 2011
- 2012 season, only 2.4 GHz radios will be allowed. |
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