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BIG DOG
Posts
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58
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N/A
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Dan maybe you can help were can I find the specs for pylon racing I looked at the AMA rules but I recall you saying that you must use a certain engine for the class you race but I could not find that?
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Fly it like you stole it
Craig"Big Dog" Buttery
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rcbamm
Posts
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48
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Jupiter, Florida.
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BIG DOG said :
Dan maybe you can help were can I find the specs for pylon racing I looked at the AMA rules but I recall you saying that you must use a certain engine for the class you race but I could not find that?
Go here Craig for the rest of the rules for AMA 424 http://www.nmpra.org/
next race is this month in Mulberry
http://www.imperialrcclub.com/pylon/pylon07Fall.html
2007/08 AMA Rules
Note: These rules were taken from the published AMA rules as of 1/17/07 for convenience. The actual rules document located at www.modelaircraft.org takes precedence.
Note: The 428 event rules are included here because the airframe rules define most of the airframe rules for the 424 event. See section 16.3 below for the specific 424 event rules.
16.2. Event 428: Quickie 500
16.2.1. Airframe
a. Weight.
b. Wings
1) Area:
2) Span:
3) Chord:
4) Airfoil thickness:
c. Fuselage.
1) Depth:
2) Width:
3) Cross-section:
The perimeter of the front firewall may be rounded to a maximum radius of 1/4 inch.
4) Engine installation: The engine and engine mount shall be fully exposed. No cowling or streamlining of the engine is permitted. A backplate-type radial engine mount that replaces the stock engine backplate may be used so long as it displaces the same crankcase volume as the stock backplate assembly. Corners and edges of the engine mount may be rounded to a maximum radius of 1/4 inch.
d. Landing Gear.
The landing gear shall be fixed, with a least two main wheels of diameter not less than 2 ¼ inches. The main wheels shall be at least seven (7) inches apart, measured parallel to the wing span. No wheel pants, wheel spats, or strut fairings shall be used to streamline the main landing gear. Struts shall be either round wire, at least 1/8 inch in diameter, or any other material no more than 1/8 thick. Flat stock or molded gears may be filed or otherwise shaped to an airfoil cross-section. Nose or tail wheels, if used, may be streamlined or enclosed.The fuselage shall have a simple, rectangular “box” cross-section with a maximum radius of 1/4 inch at the corners. Diamond-shaped cross sections are prohibited. Fillets or fairings between the fuselage and wing are prohibited. Canopies and turtle decks are acceptable but shall not be included in width or depth measurements. The front firewall shall be a rectangular, flat plate measuring at least 2-1/4 inches by 2-1/4 inches.Minimum 2-7/8 inches at its widest point, which must occur within the wing chord. Width and depth points need not coincide.Minimum 3-1/2 inches at its deepest point, which must occur within the wing chord.Minimum 1-3/16 inches for at least 47-1/2 inches of span.Constant for at least 47-1/2 inches of span.Minimum 50 inches (projected), maximum 52 inches (projected).Minimum 500 square inches..Weight of Q500 to weigh no less than 3 ¾ pounds.
16.3. Event 424: Sport Quickie
16.3.1. Airframe.
The airframe specifications for this event are identical to those for Quickie 500 (Event No. 428) with the following exceptions: Wing and tail construction. Wings and tails must be constructed of either all wood or wood sheeting over a solid foam core. Wings and tails manufactured in molds designed to produce hollow core structures are prohibited. Traditional fiberglass reinforcement, carbon fiber or inset wood spars continue to be acceptable. The last three inches of each wingtip may be made of any material. The intent of the rule is to keep the cost of participation to a minimum.
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BIG DOG
Posts
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58
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Dan, Do you quote every time you reply?
I ordered a predator, It is not here yet so I wont make Muldberry though it would have been cool because I will be travelling back from hunting camp in the panhandle.
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Fly it like you stole it
Craig"Big Dog" Buttery
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BIG DOG
Posts
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58
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N/A
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BTW any build tips would be appreciated. I am in the dark as to the best servo choices to keep the wieght down but have enough speed and torque to get the job done.
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Fly it like you stole it
Craig"Big Dog" Buttery
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rcbamm
Posts
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48
Location
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Jupiter, Florida.
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keep it light for sure. even though, heavier planes seem to fly just as good.
I'm using MN-48's on all the control surfaces in my Predators. a micro servo on the throttle. The MN 48 servo has 48oz of torque at 4.8v. that's plenty of torque for AMA 424 class.
http://www.horizonhobby.com/Products/Default.aspx?ProdID=JSP20040
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BIG DOG
Posts
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58
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what is your AUW as opposed to the min weight. I just bought servos they are digital minis but are about .5 oz heavier
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Fly it like you stole it
Craig"Big Dog" Buttery
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