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Author Topic: Black Sheep Indoor RTP Rubber Speed Event  (Read 144 times)
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kittyfritters
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« on: December 22, 2018, 07:12:33 PM »

The Black Sheep Exhibition Squadron has a Round the Pole Speed contest coming up 6:00 PM, Saturday, February 16, at the Duarte High School gym in Duarte California.

A typical rubber powered speed model will be about 22 inches long, have about a 9 inch wing span and a 4 bladed prop. In round-the-pole contests they have landing gear since ROG is required.

The speeds are amazing. The model takes off and the speed timing is done on the second two laps.  Since the models are flying on a ten foot line if the two laps take 1 second each the model is flying at 42.84 miles per hour!  (Yes, we round to two decimal places.)   However, the contest is for the total time on however many laps the CD decides.

Here are the preliminary rules set for the Rubber RTP Speed event.

RUBBER POWERED RTP SPEED EVENT RULES
(Preliminary)

Pole

    The pole will be three feet tall with a headed nail in the top.
    The line will be fine sewing thread with a paper clip at each end as a swivel and a hook. The swivel to hook length, including the paper clips is 10 feet. This gives a circle of 62.83 feet.  (1 second lap equals 42.84 mph.)
    A 1/8 inch high, foam, curb is placed across the path of the flying circle at one side as a timing point.
    Three people with stop watches will do the timing unless there is an electronic timing system


Models

    Classes

    Covered motor
        “Plausible scale” (i.e. must have a cockpit)
        Motor completely enclosed by fuselage
        Flying surfaces built up and tissue covered
        Landing gear has rolling wheel(s)
        Detachable dollies allowed
        (If you think you can make that work!)
        Hook attaches at wing tip
    Unlimited
        Motor sticks allowed
        All balsa flying surfaces allowed
        Landing gear has rolling wheel(s)
        Detachable dollies allowed
        (If you think you can make that work!)
        Hook attaches at wing tip

Competition

    For a qualifying flight the model must ROG, from the floor, from any point past the curb and must be airborne and clear the curb at the end of the first lap.
    The timing starts when the model crosses the curb at the end of the first lap. The model is timed for the second and third lap and the speed is calculated.
    Winner in each class is the fastest speed.


These rules are preliminary and will be revised after flight testing and experimentation.

I will post details on this thread and a thread about the model I build.

KF
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dputt7
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« Reply #1 on: December 22, 2018, 08:57:52 PM »

Sounds like great fun, interested to follow your build, hope you get lots of entries!
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