The following rules apply particularly to the annual SAM Championships and to SAM RC competitions in general. They are complemented by all AMA RC Safety rules and general rules for AMA sanctioned events.

Section I - SAM R/C Aircraft Definitions and Specifications back to rules index page

A. Gas Powered designs are divided into two categories: Antique and Old Timer:-

1.Old Timers are gas powered models designed prior to 1 Jan. 1943.

2.Antiques are gas powered models designed prior to 1 Jan. 1939. Antiques are by definition Old Timers and, if otherwise qualified, may be entered in any basic SAM RC event.

B. In SAM R/C basic events, no distinction is made between fuselage (cabin) and pylon designs, unless otherwise defined, such as those in specified special events

C. Authenticated Antique and Old Timer model airplane designs are published in two supplements to the SAM Rule Book: SAM Approved Designs List 2004 – Gas Models and SAM Approved Designs List 2004 – Rubber, HL Glider and Towline Glider

D. Newly discovered model designs not listed in the SAM Approved Designs Lists require authentication. Authentication is the responsibility of the contestant. Claims made to authenticate a model airplane’s date of design require documented proof (dated photographs, affidavits, etc.) They shall be submitted to the SAM Design Review Committee and upon approval will be announced in SAM Speaks and subsequently listed in the next printing of the SAM Approved Designs List.

E. The contestant must, if requested, demonstrate fidelity to an original design by submitting to the CD (contest director) a copy of the original plans or authenticated plans from which his model was built or scaled. A modeler, other than the entrant, may have built the model in whole or in part.

F. All powered SAM RC model airplanes must have originally been gas- powered designs (i.e. no rubber powered designs except in certain sponsored special events).

G. In SAM R/C events the "Builder of the Model Rule" is not in effect. This means that a contestant in a SAM R/C event may fly an airplane that was built in whole or in part by another modeler.

H. Unless otherwise defined, such as those in specified special events, all SAM basic event R/C models must weigh a minimum of 10 oz. per square foot of plan form wing area, except 1/2 A Texaco models which must weigh a minimum of 8 ounces per square foot of plan form wing area.

I. All glow and converted ignition engine powered models must have a minimum of 225 square inches of plan form wing area per 0.1 cubic inch of engine displacement.

J. All models may be modified in the following ways: Minor changes to the thrust line, i.e., upright instead of inverted engines; strengthening of structures and provision for control surfaces. Beef up the built-ups! Foam plastic may not be used as a structural material. Outlines, areas, moments and cross sections may not be changed except for direct scaling. Airfoil sections must be the same as on the original model or plans. Landing gears must be in the same location as on the original model; however, single wheeled main landing gear designs may be modified to dual wheeled main landing gear designs. All changes must be in the character of the original ship. This includes wheel sizes and dihedral, which shall be the same dimensions as the original model when the model is un scaled, or shall be increased or decreased by the same ratio on scaled up or down models.

K. Autopilot type equipment such as gyroscopic, infrared and electronic stabilizing devices are not allowed in SAM R/C models.

L. No modifications may be made to entries which would prevent the model from making normal, unassisted rise off ground (ROG) takeoffs. Therefore, no dropping gears (except 'Mystery Man' model), no VTO (vertical take off), and no catapult devices are approved.

M. There were a few Flying Wing (tailless) models designed in both the Antique and Old Timer era. For the purposes of determining the minimum weight of a flying wing, 1/3 of the wing area shall be considered stabilizing area.

N. It is permissible to scale any approved design up or down, except Pure Antique models and those specified in certain special events.

O. For safety reasons, all models, except 1/2A Cox reed valve engines, must have a functioning R/C controlled engine or motor cutoff.

P. Only fixed pitch, non-folding two bladed propellers made of wood, injection molded plastic, or continuous fiberglass strand and plastic shall be permitted.

Section II - RC Engine Definitions, Specifications, and Classifications back to rules index page

A. All SAM R/C models entered in the basic events must have an engine of conventional reciprocating piston design as defined by the following four categories: Original Ignition engines, Converted Ignition engines, Cross Scavenged Glow engines and Schnuerle Glow engines.

B. Original Ignition engines are those produced prior to 1950 (or otherwise meeting SAM Engine Committee qualifications and approval) using compression or cam operated breaker points, spark plug(s), batteries (or magnetos), and coils and condenser to ignite the fuel mixture. Breaker point operated transistorized switching systems, which eliminate the condenser, are acceptable. Pre-1950 diesels are, by definition, Original Ignition engines. Original Ignition engines, converted to glow by the manufacturer and afterwards reconverted, retain their initial classification. Replicas of Original Ignition engines bearing the same name are categorized as Original Ignition engines.

C. Converted Ignition engines include glow plug ignited engines to which breaker points and a spark plug have been added, and modern (post 1949) spark ignited engines. They are limited to converted cross-scavenged 2 cycle and to 4 cycle engines only.

D. Cross Scavenged Glow engines include all conventional single transfer (bypass) port, glow plug ignited 2 cycle and 4 cycle engines, all post-1949 cross scavenged Diesel engines, and all cross scavenged glow engines converted to Diesel.

E. Schnuerle Glow engines include all multi transfer (bypass) port Schnuerle or PDP glow plug ignited engines and all post-1949 Schnuerle ported Diesel engines.

F. Engines in 1/2A Texaco models must be Cox reed valve .049’s with an integral fuel tank of not over 5.1 cc capacity. These must be basically stock engines as typified by the Texaco Jr. or Babe Bee designs. Other Cox reed valve engines such as the Black Widow and Golden Bee designs are acceptable as long as the larger 8 cc capacity tanks are replaced by the 5.1 cc capacity tank such as found in Cox #1596 conversion kit containing the smaller tank assembly. The only modifications allowed are: Moving the fuel pickup from the middle to the bottom of the tank, adding a muffler, and adding a needle valve extension and/or head gaskets.

G. SAM RC engine classes are based on engine displacement in cubic inches as follows:-

Original ignition engines up to 1.200 cubic inches are also class C engines in the basic RC events:-

H. Four cycle engines are classed as Cross Scavenged Glow engines if glow plug ignited, or they may have points and spark plug added to be classed as Converted Ignition engines. Four cycle engines having exposed rocker arms and originally manufactured by OS, Saito, Enya, and Kalt prior to 1986 and all pre-1950 four cycle engines are rated at 60% of their actual displacement for classification purposes. All other four cycle engines including modern enclosed rocker arm engines are rated at 80% of their actual displacement for classification purposes.

I. Tuned pipes, tuned mufflers, or other exhaust attachments that increase engine performance are prohibited. Mufflers that do not increase performance are allowed on any engine.

J. Turbines, Wankels, non-reciprocating engines, supercharged, and turbo charged engines are prohibited. Only engines of the type and specific displacements listed in this section may be used in SAM basic events.

K. Replicas of original ignition engines and bearing the same name shall be considered an original ignition engine. Custom and production ignition engines designed and manufactured after December 31, 1949 shall be limited by the same rules applied to approve glow conversion engines. The SAM Engine Committee decides which engines should be classified as “original” for competition purposes. This list of ignition engines will be posted on the SAM Web site or a printed copy is available from the SAM Librarian.

L. Only engines of the type and specific displacements listed in this section may be used in SAM R/C basic events.

Section III - R/C Fuels back to rules index page

A. Ignition engines may use gasoline and lubricants. FAI fuel (methanol and lubricants only, no nitro or other additives) is also allowed.

B. Diesels and glow engines may use any fuel that has not been banned by AMA for safety reasons.

C. 1/2 A Texaco engines may not use gasoline based fuels, nor gasoline as an additive or any other additives. They may use only commercially available glow fuel, or any percentage blend of alcohol/methanol, nitromethane, propylene oxide and lubricants.

Section IV – SAM RC Events Descriptions and Definitions back to rules index page

A. The eleven SAM basic RC events are climb and glide with flight scores accumulated at one point per second. Flight time starts at the moment the model is released for takeoff, or launched. Flight time stops when the model next touches the ground or some stationary object on the ground. All events except Texaco have maximum or “max” flight times beyond which no further points are accumulated during any one flight. Texaco flights are unlimited.

B. The basic SAM RC events, flight scoring and flight maxes are as follows:

All model releases must be recorded as actual flight time, maximum flight time, or zero for overruns, landing off field, or lost model.

C. Engine run times are limited to a specific number of seconds in the LER (limited engine run) events according to engine type. In the Antique events engine run times are determined by engine type and model weight

Engine run times by for the LER and Antique events are as follows:-

Regardless of weight, a model entered in either Antique event will receive an engine run time no less than it would have in its LER class event.

D. Engine run time starts when the model is released for flight, and ends when the required RC shutoff has been activated and the engine stopped.

E. The Texaco events are endurance events in which the contestant may run the engine any length of time in order to consume the model's entire allotment of fuel. For the Texaco Ignition and Texaco Glow events, a contest official measures and fuels the engine with 4 cc/lb of aircraft weight. For the 1/2A Texaco event, the contestant may fill the 5.1 cc capacity fuel tank.

F. In the Texaco and Antique events, the measured weight of the model is rounded off to the nearest pound, e.g. 5 lbs.-8 oz. to 6 lbs. and 5 lbs.-7 oz. to 5 lbs. for fuel allotment engine run purposes only. All fuel and engine run allotments have a 7 lb. maximum. A model may weigh more than 7 lbs, but the fuel allotment stops at 7 lbs.

Section V - SAM RC Contest Procedures back to rules index page

A. The eleven basic SAM RC events shall be flown at all SAM Championship meets, and will be used as the basis for determining an overall RC Ignition Champion (basic events 1 through 5 only) and an overall RC Glow Champion (basic events 6 through 11 only) by awarding 5 points for each first place, 4 for second, etc. down to 1 point for fifth place. Separation of the basic events for championship points is as follows:

Ignition Championship

1. Class A LER Ignition
2. Class B LER Ignition
3. Class C LER Ignition
4. Pure Antique
5. Texaco Ignition

Glow Championship

6. Class A LER Glow
7. Class B LER Glow
8. Class C LER Glow
9. Antique Glow
10. Texaco Glow
11. 1/2 A Texaco

B. Antique events will be flown concurrently and a contestant may enter either the Antique Glow, or Pure Antique event, but not both. The Antique Glow event is open to all Antique model airplanes with glow engines regardless of scaling. The Pure Antique event only permits un scaled Antique models with Original Ignition engines.

C. Texaco events will be flown concurrently and a contestant may enter either the Texaco Ignition, or Texaco Glow event, but not both. Models with Original and Converted Ignition engines must be entered in the Texaco Ignition event. Models with Cross Scavenged or Schnuerle Glow engines must be entered in the Texaco Glow event. Each year the Roberts RC Texaco perpetual trophy will be engraved with the name of the contestant having the longest flight in the two Texaco events. The trophy resides in the AMA Museum in Muncie, Indiana.

D. The CD may combine LER classes, and Antique classes and events if there are fewer than five entrants in any one class or event. The CD must insure that everyone has a reasonable opportunity to fly and thus may reduce engine run times and flight maxes as necessary; however, such changes should only be made as a last resort when no other option is practical. In case of tie scores, the CD determines fly-off procedures.

E. In local and regional events the CD may select the classes he wishes to fly and in such meets may try new concepts as 'special events' to determine their practicality. The CD must in this case pre-publish and distribute written contest information stating the events to be flown, any deviations from these rules, and the specific rules for any new events.

F. The CD shall call a pilots’ meeting of all contestants prior to the start of flying each day to inform them of the rules and any changes he designates due to peculiar field conditions. It is the responsibility of the contestant to be aware of all rules for those events in which he is competing.

G. All models, except 1/2 A Texaco and 1/2 A Scale, must ROG (rise off the ground). This rule may be altered by the CD to permit hand launching only if the field is too rough, muddy, or grassy.

H. Only one contestant may fly a particular plane in a given event. He, or another, may fly the same plane in other events. Unless otherwise stated, a contestant may enter only one model in an event.

I. The contestant has 5 minutes to get airborne, from the time he is assigned a timer and a clear frequency. Otherwise the contestant loses his immediate turn at flying but the contestant is not charged with a flight.

J. All models must land by coming to rest completely within a landing area designated by the CD. Models landing outside the designated area will be given a zero flight score. A zero score will also be given for an engine overrun.

K. Anyone serving as a timer is an acting contest official and is responsible for minimum knowledge and enforcement of the rules. The timer must monitor the 5-minute time limit to get airborne, record the scores of all model releases and launches, and report any rule violation or flight irregularities to the CD for resolution.

L. The timer must see the model released to start the flight and must see the model land on the field to conclude the flight score. It is not necessary that he have the model in view at all times during the flight. To prevent loss of a model, binoculars may be used only during a declared emergency to aid the pilot in returning the model directly to the field. For safety reasons, timers are allowed to accompany the contestant through the model's flight and retrieval.

M. Thermal aid equipment, such as thermal sniffers, is not allowed. Autopilot type equipment such as gyroscopic, infrared, and electronic stabilizing devices are not allowed in SAM RC models.

N. There will be no time limit nor penalty imposed on the landing of a model; However to prevent delays, the contestant must land as soon as possible after a flight is completed.

*Section VI - R/C BASIC EVENT Model Specs* back to rules index page

* Note: In case of conflicting information with previous sections I thru V, those sections will take precedence over information found in this section VI.

The following event categories will be scheduled to fly at all SAM Championship (SAM Champs) events and are eligible for Championship points.

In alphabetical order

1B. 1/2A Texaco:-

A. Any SAM approved Antique or Oldtimer gas model designs as found in the "SAM Approved Designs List ~ Gas Models" booklet.

B. Scaling allowed

C. Minimum model weight is 8 oz. per sq. ft. of plan form wing area.

D. Landing gear is required. Two wheels may be substituted for single wheel gear, but one wheel gear may not be substituted for two wheel gear.

E. 1/2 A Texaco engines must be Cox reed valve .049's with an integral fuel tank of not over 5.1 cc capacity. These must be basically 'stock' engines as typified by the Texaco Jr. and Babe Bee designs. Other Cox reed valve engines such as the Black Widow and Golden Bee designs are acceptable as long as the larger 8 cc tanks are replaced by the 5.1 cc tank, such as found in the Cox #1596 conversion kit, containing the smaller tank assembly. The only modifications allowed are: Moving the fuel pickup from the middle to the bottom of the tank, adding a muffler, and adding a needle valve extension and/or head gaskets.

F. The 5.1 cc fuel tank may be filled by the contestant.

G. 1/2 A Texaco engines may not use gasoline based fuels, nor gasoline as an additive or any other additives. They may use only commercially available glow fuel, or any percentage blend of alcohol/methanol, nitromethane, propylene oxide and lubricants.

H. Propeller limited to 8" or less diameter.

I. Either ROG (Rise off ground) or hand launching allowed on all 1/2 A models.

J. Three flights allowed. Sum of best two flights for score. 15 minute max.

2B/3B. Antique:-

A. Any SAM approved Antique designated gas model, designed, kitted or published prior to January 1, 1939, as listed in: 'SAM Approved Designs List ~ Gas Models'

B. Antique events are basically LER (Limited Engine Run) events with engine run time based on model overall weight:-

1. The measured weight of the model is rounded off to the nearest pound- e.g. 5 lbs 8 oz. to 6 lbs; and 5 lbs 7 oz. to 5 lbs for engine run allotment purposes. All engine run allotments have a 7 lb. maximum. A model may weigh more than 7 lbs. but the engine run time allowed stops at 7 lbs.

2. Minimum model weight is 10 oz. per sq. ft. of plan form wing area.

C. Launch ROG (Rise Off Ground).

D. Four flights allowed. Sum of best two flights for score. 10 minute Max.

 

2B. Antique Glow:-

A. Engine run times for Schnuerle glow engines are limited to 5 seconds per lb. of model or a minimum 18 seconds.

B. Engine run times for Cross Scavenged glow engines are limited to 6 seconds per lb. of model or a minimum 23 seconds.

C. Scaling from original size is allowed. The minimum wing area is 225 sq. in. per .10 cu. In. of engine displacement.

3B. Pure Antique:-

A. Only original ignition engines (no converted ignition) or pre-1950 diesels are allowed. Engine is allowed an 8 second engine run per lb of model or a minimum 35-second run.
B. No scaling from the original size is permitted.

4B. LER - Limited Engine Run: Ignition -and-

5B. LER - Limited Engine Run: Glow

A. Any SAM approved Old Timer gas model, designed, kitted or published prior to January 1, 1943, as listed in: 'SAM Approved Designs List ~ Gas Models'

B. Engine run time starts when the model is released for take-off, and ends when the required R/C shutoff has been activated and the engine stopped.

C. Minimum model weight is 10 oz. per sq. ft. of plan form wing area.

D. Scaling allowed.

E. Engine classes are based on the following displacements:-

Class	Displacement cu.in.
A	0.051 to 0.200
B	0.201 to 0.300
C	0.301 to 0.650

F. Engine run times by engine types for LER events are as follows:-

Converted Ignition Engines	Original Ignition Engines	Schnuerle Glow Engines	Cross Scavenged Glow Engines
28 sec's	35 sec's	18 sec's	23 sec's

G. The sum of the best two flights out of four is scored.

H. Max time:-

	Class	Time
1	A	7 minutes
2	B	8 minutes
3	C	9 minutes

6B. Texaco Ignition -and-

7B. Texaco Glow

A. Any SAM approved Antique gas model, designed, kitted or published prior to January 1, 1939 and designated as an Antique
in the: "SAM Approved Designs List ~ Gas Models".

B. Unlimited flight time

C. In Texaco three flights allowed. Longest flight scores.

D. There is only one Championship Texaco Perpetual Trophy, awarded to the contestant with the highest scoring time in either the Texaco Ignition - OR - Texaco Glow event.

E. Fuel Allotment:-

1. In Texaco a contest official measures and fuels the engine with 4cc per lb. of total aircraft weight.

2. The measured total weight of the model is rounded off to the nearest pound - e.g. 5 lbs 8 oz. to 6 lbs; and 5 lbs 7 oz. to 5 lbs for fuel allotment purposes only. All fuel allotments have a 7 lb. maximum. A model may weigh over 7 lbs. but fuel allotment stops at 7 lbs.

F. Minimum model weight is 10 oz. per sq. ft. of plan form wing area.

G. Scaling allowed

H. Texaco Ignition can use any SAM approved ignition engine, which includes any pre-1950 diesels.

I. Texaco Glow can use any SAM approved glow engine, which includes any post-1949 diesel.

Section VII - R/C SPECIAL EVENTS - Engine Powered back to rules index page

A varied menu of popular special events will be selected to fly at each SAM Championship event (SAM Champs).

In alphabetical order

1S. 1/2 A Scale Duration:-

A. Model shall be a replica of a reciprocating engine powered, man carrying airplane of pre-1943 vintage. Powered sailplanes are not acceptable.

B. Although models are not judged for scale, a reasonable effort should be made to simulate realistic coloring and markings. Model to be balsa/plywood construction. Foam may be used for detail only. A plan or 3 view may be needed for confirmation.

C. The monoplane minimum model weight is 8 oz. per sq. ft. of plan form wing area.

The multi wing minimum model weight is 6 oz. per sq. ft. of plan form wing area.

D. 1/2 A Texaco engines must be Cox reed valve .049's with an integral fuel tank of not over 5.1 cc capacity. These must be basically 'stock' engines' as typified by the Texaco Jr., or Babe Bee designs. Other Cox reed valve engines such as the Black Widow, or Golden Bee designs are acceptable as long as the larger 8 cc tanks are replaced by the 5.1 cc tank, such as found in the Cox #1596 conversion kit, containing the smaller tank assembly. The only modifications allowed are: Moving the fuel pickup from the middle to the bottom of the tank, the addition of a muffler, the addition of a needle valve extension and/or head gaskets.

E. The 5.1 cc fuel tank may be filled by the contestant.

F. 1/2 A Texaco engines may not use gasoline based fuels, nor gasoline as an additive or any other additives. 1/2A Engines may use only commercially available glow fuel, or any percentage blend of alcohol/methanol, nitromethane, propylene oxide and lubricants.

G. Propellers are limited to 8 in. diameter or less.

H. Either ROG (Rise Off Ground) or hand launching is allowed on all 1/2 A models.

I. Three flights are allowed. The max is15 min Scoring is the sum of the best two flights.

2S. Brown Jr. LER:-
Brown Jr. LER models are typically large fuselage designs with wing mounted directly to the fuselage. Parasol models with wing mounted on cabanes are also considered to be fuselage models.

A. Non-pylon Antique model, pre-December 31, 1938. No scaling.

B. No minimum wing loading.

C. An original or SAM approved replica Brown Jr. spark ignition engine:-

1. No modifications to engine which would improve performance.

2. Engines can be built from different models, but all parts must be original or replica, including needle valves.

D. Launch is ROG (Rise Off Ground).

E. Ninety (90) second engine run.

F. Unlimited flight time.

G. Three flights allowed. The longest flight is scored.

H. Model flown in Brown Jr. LER cannot be flown in Brown Jr. Texaco.

3S. Brown Jr. Texaco:-

This event designed to encourage replicating and flying the Texaco models flown in the early years of the Golden Age of Aeromodeling. Typically large fuselage designs with wing mounted directly to the fuselage. Parasol models with wing mounted on cabanes are also considered to be fuselage models.

A. Only 1937 or earlier Antique model. Non-pylon model. No scaling.

B. Wing span must be 84 inches or greater.

C. No minimum wing loading.

D. Same engine guidelines as Brown Jr. LER event.

E. Fuel allotment will be 4 cc's/lb. of model weight. Maximum weight of model is 7 lbs. Maximum fuel allotment is 28 cc. regardless of model weight.

F. Any non-pressurized fuel tank may be used to accommodate up to 28 cc (.95 oz.) of fuel. Contest official fills tank.

G. Launch ROG (Rise Off Ground).

H. Unlimited flight time.

I. Three flights allowed. The longest flight is scored.

J. Model flown in Brown Jr. LER cannot be flown in Brown Jr. Texaco.

4S. Class A Texaco:-

A. Any SAM approved Old Timer gas design.

B. Any SAM approved Class A engine.

C. No throttling for speed control, but engine cut-off required.

D. Minimum model weight is 10 oz. per sq. ft. of plan form wing area.

E. Fuel Allotment:

1. In Class A Texaco a contest official measures and fuels the engine. Any fuel tank may be used.
2. For Glow and Ignition engines: 14 cc of fuel.
3. For Diesel engines: 8 cc of fuel.

F. Launch ROG and fly.

G. Three flights allowed. 15 minute Max. Sum of best two flights score.

5S. Classic Texaco:-

A. Any SAM approved Antique designated gas model, designed, kitted or published prior to January 1, 1939, as listed in the:
'SAM Approved Designs List ~ Gas Models'.

B. No scaling.

C. Minimum model weight is 10 oz. per sq. ft. of plan form wing area.

D. Pre-1943 designed original spark ignition engines only. No diesels. No replicas No Converted Glows (JOR-16July2010)

E. Modifications:

1. Non-original needle valve assemblies may be used.
2. Intake restrictors may be used.

F. Fuel Allotment:

1. In Classic Texaco a contest official measures and fuels the engine with 4cc per lb. of total aircraft weight. The measured total weight of the model is rounded off to the nearest pound-e.g. 5 lbs 8 oz. to 6 lbs; and 5 lbs 7 oz. to 5 lbs for fuel allotment purposes only.

Note: Classic Texaco has no fuel allocation limit or model weight limit.

SAM wants to encourage flying the original giants that weighed more than seven pounds. For example, a 9 pound model would get 36cc of fuel.

G. ROG launch.

H. Three flights allowed. Best single flight scores.
Unlimited flight time.

6S. Foxacoy: LER Event:-

A. Any Old Timer design (including Antique) as recognized in the SAM Approved Designs List ~ Gas Models” may be flown in this event.

B. 788 square inches minimum wing area.

C. Scaling is allowed.

D. Model must weigh a minimum of 10 oz. per square foot of wing area.

1.This will allow use of airplanes that are legal for C glow LER, if 788 square inches minimum wing area or greater, to be re-engined and eligible to compete in Foxacoy.

E. Engine must be stock Fox .35 stunt or McCoy Red Head FV .35.

1. McCoys with lightning bolts on the bypass are ineligible. 2. Engines may be chromed to restore compression and fit. 3. No pressure fuel systems.

F. ROG launch.

G. Engine run time- 35 seconds.

H. Score the sum of best 2 of 4 flights. 7 minute max.

7S. Ohlsson .23 LER event:-

A. Any Old Timer design as recognized in the “SAM Approved Designs List ~ Gas Models” may be flown in this event.

B. No scaling. Note: The Old Timers scaled to the previous rule’s 450 sq. in. wing area are no longer grand fathered nor eligible for this event.

C. No minimum weight requirements

D. Any O&R .23 ignition engine, no pressure, no modifications other than needle valve assembly and balancing crankshaft.

E. Engine run:-

1. Side port - 45 seconds (Large and Small exhaust).

2. Front Rotary Valve - 35 seconds.

F. ROG (Rise off ground) launch

G. Score the sum of best 2 of 4 flights. 7 minute max.

8S. Ohlsson Side Port LER event:-

A. Any SAM approved Antique gas model, designed, kitted or published prior to January 1, 1939 and designated as an Antique
in the: 'SAM Approved Designs List ~ Gas Models'.

B. No Scaling

C. Minimum model weight is 10 oz. per sq. ft. of plan form wing area.

D. *Any Ohlsson side port ignition engine, no pressure, no modifications other than the needle valve assembly and balancing crankshaft.

*Note: The Ohlsson sideport event is open to any size sideport ignition Ohlsson's. In actual practice, the Ohlsson side port event contestants unanimously favor flying .60 size engines and models Both small and large exhaust .60's are used in this event.

E. ROG (Rise off ground) launch.

F. Engine run time: 35 seconds, all engines

G. Score the sum of the best 2 of 4 flights. 7 minute max.

Special Events VII - R/C Engine Powered (continued)

9SG. O/T Glider (Not an engine powered event):-

A. Any glider designed or kitted before 1947, scaling OK.

Towline gliders are listed in the:
'SAM Approved Designs List ~ Rubber, HL Glider and Towline Glider'

B. Maximum wingspan = 120 inches, no minimum wing loading.

C. Precision event: 20-minute total of three flights (or less).

1. Time over 20 minutes, deducted from 20 minutes.

D. Tow release starts the clock.

E. High start or winch only. Max extended length = 700 feet.

F. Launch equipment supplied by CD or pilot.

10S. R/C Assist Nostalgia:-

A. Any model designed between 1/1/43 to 12/31/56, scaling OK.

B. Two wheels OK if single wheel on plans. No single wheel if two wheels on the plan.

C. Any production cross-scavenged glow or diesel engine up to 0.65 cu. in. Ignition engine up to 1.2 cu. in. Engine pressure OK.

D. Ignition engines must have cam operated points i.e. no Hall Effect (electronic) ignition systems.

E. No Schnuerle, PDP, or ABC piston types, or converted ignition.

F. Fuel: Gas/oil or FAI fuel for ignition. Any nitro content for glow.

G. There are two classes:

1. Small = .0 to .300 cu. in. glow/diesel or .0 to .350 ignition.
2. Large = .301 to .65 cu. in. glow/diesel or .351 to 1.2 ignition.

H. Displacement loading of 1 oz. per .01 cu. in. of displacement;
i.e. .19 powered model will weigh a minimum of 19 oz.

F. Models may be hand launched, ROG, or VTO (vertical take off).

I. Engine run times: glow/diesel = 18 sec's; ignition = 25 sec's

J. Score the sum of best 3 of 5 flights. 7 minute max.

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