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Dragsters are a gas

Tuesday, 27th June, 2017

CO2 propels the dragsters along as they shoot down the hallway in the industrial arts block. CO2 propels the dragsters along as they shoot down the hallway in the industrial arts block.

By Kara de Groot

The halls of the Broken Hill High School’s industrial arts block were filled with fishing line and Year 8 students yesterday morning as they raced the culmination of their term’s work in technology.

Twenty Year 8 students in the technology class designed and created their own little ‘dragsters’, which were fitted with CO2 canisters and fired off two at a time down the hallway to see which was fastest.

“We’re using CO2 canisters like you’d get in whipped cream dispensers,” industrial arts teacher Jason Bradley said.

“They get mounted into the back of the dragsters and there’s a firing pin that hits it and shoots the cars along,” he said.

“They’re travelling the same track, and they’ll travel that in about half a second. The kids love it.”

The students seemed to think it was a fun way to spend the morning, although Josh Niarros said they did appreciate the science behind it all.

“We’ve been learning about aerodynamics and down forces, the stuff that makes cars fast,” Josh said.

“We went on the internet to look at designs and how aerodynamics works with them,” he said.

Mr Bradley said the races were a practical way to teach the students about aerodynamics, and encourage interest in STEM (science, technology, engineering and math) subjects.

“We’re looking at how air flows over the cars and how that affects their speed,” he said.

“They’ve all come up with their own designs for the cars so each will travel a little bit differently.”

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