Chatterbox (oz5036)


Chatterbox - plan thumbnail image

About this Plan

Chatterbox. Control line team racer model, to FAST rules, for K&B .29 Torpedo engine.

Quote: "Team racing provides great sport for fliers, spectators, and ground crew alike. Try it in your club. Chatterbox, by Keith Conrad.

THERE'S a new day dawning in model aviation - a new type of sport and model are being developed. Although the new model speed cannot match those speeds flown by the screamin' broomsticks, in appearance it leaves its forefather in the dust.

Can you imagine flying a U-control ship resembling a Goodyear type racer, and competing in regular Air Race events? First you have preliminary-heat races, followed by 5 and maybe 10 mile races with pit stops and thrills for all. This idea has been thought of many times but nothing was ever worked out on it.

The FAST club, seeing the handwriting on the wall (rising speed and more safety problems), started work but did not stop there. After much discussion we decided on the kind of ship we wanted for such an event. First we limited motor displacement to .299 cu in, and plane size to a minimum of 125 sq in of effective wing area; this was to be topped off with a completely cowled enginq, and a cabin or cockpit. Fuel load is 1 oz maximum and fixed landing gear is mandatory. For further attraction we add a dummy pilot and decorate the ship in the gaudiest of color schemes.

Up to this point you can see how many possibilities are on the horizon for such an event. There are thrills aplenty when two or more of these little ships are given the green flag to start a trophy dash or one of the other highly competitive races. With no effort at all these Team Racers have hit a snappy 85 mph. Of course the longer races are more interesting in that anything can and usually does happen, and the ground crew has to be on its toes with 'fuels and tools' necessary to put their ship back into the race as fast as possible.

Each type of race entered requires thought before going out into the circle. For instance, in a 1/2 mile acceleration race you want to get all the rpm possible for that fast get-away; this calls for a low pitch prop. On the other hand, in a 5 or 10 mile race you have to sacrifice some of those rpm's so your limited fuel supply will last as long as possible yet keep you at a competing speed. In these long races where pit stops are necessary fuel tanks which can be filled quickly are a good idea. With the glo plug era here, ignition troubles are eliminated from this event. However a hole in the cowl the size of a small plug wrench is advisable; this will allow access to plug for elimination of excess fuel. For more realism, 'deadmen' are used for takeoff instead of hand release. With a pull of a single string, one starter can release up to four ships..."

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User comments

Photos from Control Line site in Toledo Spain in a meeting of trainers [more pics 003-006]. This model was constructed by Jesus Ortega.
AntonioRG - 28/10/2016
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