1) World Models Mfg. T-34 Mentor 57.5” will be the only approved aircraft.
2) No modifications are allowed to the structure of the aircraft such as but not limited to the use of foam wings, clipped wings, airfoil modifications, wing fairings, tail fairings, incidence modifications and lightning holes. The aircraft must be assembled per instructions, supplied with kit. Landing gear provided with the kit must be used. Aircraft may be re-covered in a different color scheme. Cowls may not be altered; except for the sealing of the air ducts. Dihedral of the wing must remain stock, as shown in the World Models plans. Pilot busts are not required. Canopies may be tinted, but must remain stock, in height, length and width.
3) Allowable spinner type is open as to manufacturer and size (Plastic or Aluminum, brass spinner nuts allowed). No flywheel spinners.
4) Wheel size is restricted to stock kit size. Replacement wheels must be of equal size, in width and diameter as the stock wheels. No racing style wheels or fairings will be allowed. Wheel size is approximately 2".
5) Fuel tank is restricted to stock kit size and capacity. No bladder tanks or pressurized fuel systems allowed other than muffler pressure from a stock muffler. Check valves are not allowed.
6) Propellers may be any wood or composite propeller that has two blades and is commercially available for under $10. No single bladed propellers will be allowed. Propellers must have two equal blades.
7) The only allowed engine for the T-34 acing is the
OS .46AX2, OS.46AX or OS.46FX
8) Engines must be stock except for the approved modifications listed in this paragraph. Mufflers may be modified only by the removal of the baffle “or” by drilling of the exhaust exit although the outside diameter of the exhaust exit and length must remain stock; if the exhaust exit has been drilled, the baffle must remain installed. Mufflers may be safety wired or otherwise attached to engine to eliminate the loss of mufflers. Engines may only be mounted upright. No servo operated carburetor adjusting allowed. No modifications to the crankcase volume or muffler pressure will be allowed. Engines can be checked by the CD. Replacement of the stock muffler bolt is allowed. Most racers use an all-threaded rod or an 8-32 or 10-32 bolt with nylon locking nut and/or lock tite.
9) All racers must use only club provided 15% fuel.
10) No micro servos are allowed; standard size servos only. Minimum of a 500-mah-battery pack is required. Control hardware such as pushrods and linkages may be replaced. Slip type linkages with setscrews, such as supplied in kit, may not be used on ailerons or elevator. Z-bend or solder linkages are the best suitable application for major control surfaces. All control linkages must have keepers.
11) Any aircraft can be safety checked by the CD for compliance with the rules. A plane deemed illegal will result in disqualification unless it can be corrected prior to the start of the race.
Race Day Guidelines
1) Pilots must stand behind the safety barrier while flying.
2) Anyone on the flight line is required to wear a hard hat. Everyone should stay alert for out of control airplanes.
3) Safety should be your # 1 concern.
4) Aerobatics are not allowed during the race.
5) If flying other than 2.4 GHz systems, before turning on your transmitter, each pilot is responsible for securing the appropriate frequency pin and having the pin in their possession during the race. These pins are located on the frequency board.
6) The pilot and the aircraft must be ready when you are called to race. There will be a 2 minute starting window from when the CD says, “start your engines”. All aircraft must be airborne by the end of the 2 minutes. If you are not ready you will miss that heat race or fly off and you cannot make up any heat races. The 30 second countdown will start once all aircraft are safely airborne. Do not hurry to the point where you make a mistake and injure yourself or someone else. The CD will announce to the pilots when the countdown has started; 30 seconds, 15 seconds, and then a countdown from 10,9,8,7,6,5,4,3,2,1,0 seconds to the start of the race. The race starts once the clock reaches zero. At this time all aircraft should be at, or to the left of the start/finish line. If you jump the start, you must fall in behind the last place plane prior to you completing your first lap. Failure to fall in behind the last place plane will result in a DNF.
7) Each pilot will have a lap counter who will stand immediately behind the pilot during the race. While the lap counter may converse with the pilot about the race, and should provide any warning deemed necessary for a safe race; the lap counter is a “Race Official”. The lap counter’s function is to count laps for his pilot, as he crosses over the start/finish line and to announce when their pilot has completed all ten laps, by loudly announcing 1st, 2nd etc. At the start of the race the lap counters will position themselves at the start/finish line to validate that their pilot had a clean start or has jumped the start. If their pilot did jump the start, the lap counter must inform the CD and then their pilot. The lap counter will then validate that their pilot has fallen in behind the last place plane, prior to completing the first lap.
8) Please let the CD know as soon as possible if your plane will not be able to make the race so the CD can, if needed, re-balance the remaining heats/final race. All aircraft must remain in the pit area.
9) In the event of a mid-air collision the CD will require that all planes involved in the mid-air land for safety reasons, even if there is no visual damage. Failure to land after a mid-air will be an automatic DNF.
10) Contestants may take off on a first-come, first-served basis, during the two minute engine start up period.
11) During the 2 minute start window, if your engine dies it may be restarted. If your engine needs to be restarted this does NOT extend the two minute window.
12) Each heat race will have a maximum of five pilots. Event matrixes will vary due to number of entrants. The GCF pylon course is a standard two-pylon course and each aircraft must complete 10 laps to qualify for points in each heat. All aircraft are air started using a thirty-second countdown. During the start of the race pilots are required to make the attempt to go around the east Pylon 2. All called jumped starts cuts and pylon cuts are final and there will be no protests allowed. Pylon judges will be calling cuts only. Turn calling is up to the pilot and/or his lap counter; there will be no assistance by electronic devises, flags or etc.
13) GCF has permission to relocate the west pylon “ONLY” during our monthly T-34 races and the pylon must be taken down immediately after the monthly race has finished. Yes, this means that we are not allowed to install the pylon for practice. The west pylon location is approximately 150 feet to the south of our property fence line, in line with the west fence such that both pylons will be at an equal distance from the center line of the runway.
14) The GCF has designated a racing safety line as the southern edge of the runway. At no time should any part of an airplane cross over any part of the runway during a race. The CD can direct any pilot to land at any time if the CD feels unsafe flying is taking place.
15) The heat will consist of 10 laps in a racetrack pattern flown counter clockwise past each pylon. Pilots should also keep their aircraft above the top of the pylon poles.
16) At the end of the race call out your landing approaches and alert the other pilots if you will be on the runway. Once you and your plane are off the runway announce to the remaining pilots, “the runway is clear”. There will be no downed aircraft retrieval until the last aircraft has safely landed, unless the downed plane is on the runway.
17) Points system for heat racing is as follows: 1st place-5 pts, 2nd place-4 pts, 3rd place-3 pts, 4th place- 2 pts, and 1 pt for 5th and/or one cut, 0 for DNF and/or 2 or more cuts.
18) In the Gold, Silver and Bronze races, the qualifiers will be determined by taking sets of three to five pilots with the highest points accumulated from the heat races, and group them into equal groups, if possible. In the case that there are multiple ties in the standings, the CD has the option to run a five lap fly off to determine the trophy race matrix. With a conflict of frequencies during a tie in points, the pilot with the highest amount of points accrued, will be locked into that metals race. Racers in the Gold race will be awarded two extra points and one extra point for a Silver racers.
19) The race CD will tabulate the scores at the end of the race and announce the winners, and then present the scores to the GCF Vice President. The GCF Vice President will maintain the overall point accumulations for the annual awards.
20) T-34 racers will be required to pay a five dollar entry fee. This fee covers the cost of the club provided race fuel and to also cover the cost of the post race lunch.
1) Novice racers must follow the same rules as the T-34 racers, with the following exception.
2) The heat races will be five laps.
3) No points or yearend awards will be given out.
4) This is a “fly what you own” type of race, as long as the engine size is .46 or smaller.
5) This “Novice Class” race has been organized to help you gain experience in pylon racing.
6) Since novice racers will be using their own fuel they won’t be required to pay a five dollar entry fee, although a donation to the club would be appreciated to pay for your post race lunch.
7) In the spirit of fair competition, if one or more of the novice racers airplane is much faster than the rest of the field, they may be asked to re-prop there plane, so there plane is closer in speed to the rest of the field, so they can experience true completion.