Three intrepid Auckland high school students turning bicycles into e-bikes

Three Henderson High School entrepreneurs are turning everyday bicycles into e-bikes at a fraction of the cost of a new one.

Volt Electrics was a business born out of personal plight when Grayson baulked at the price of a new e-bike.

"I went to go buy an e-bike, and they were three and a half grand for a base model. I said, 'Hey I can do it cheaper than that,'" Grayson told Seven Sharp.

Grayson went into business with Stefan and Neils, with the trio getting help from Avanti Cycles to give junk laptops a second life.

"Our niche is that we take the lithium ion cells from laptop batteries, we got a few community drop off points, we just pick them up take them to our room and pop them open, we do our quality control, and we put them into e-bike batteries.” Grayson explained.

The method is the same used in Tesla cars, with the high school students welcoming comparisons to Tesla founder Elon Musk.

"Little Elon Musks…yeah, different scale, same dream," the boys said.

Teacher Hugh Jones is very proud of his students, saying they’ve been given a $15,000 grant from the Ministry of Youth Development.

"There's a massive market for e-bikes and it's only getting bigger so to get into it while it's growing at a phenomenal rate's amazing," Grayson said.

Grayson, Neils and Stefan from Henderson High School are onto a winner with their take on popular electronic bikes. Source: Seven Sharp

'We as farmers need to take some responsibility' - industry reviewing irrigation methods after criticism

Farmers are looking into new ways of managing irrigation in light of ongoing criticism of the industry.

This month the government announced it was pulling its support from several irrigation schemes including the Hurunui water project, as well as those in Flaxbourne, Malborough and Hunter Downs near Timaru.

Irrigation New Zealand's biennial conference this week attracted more than 400 representatives including local and regional councils, farmers, experts, and environmentalists, all wanting to discuss the industry's future.  

"We as farmers need to take some responsibility and accountability for that and lead the charge of cleaning up our own environment," said James Dicey from Mount Difficulty Wines.

The conference was all about developing new ways of working, with a key focus on the role technology can play in improving the industry's environmental footprint.

"We need to really make sure we encourage those innovative thinkers and get them out there to share their story," said Nicky Hyslop, Irrigation NZ chair.

"They often lead the way and they lead change."

Mount Difficulty Wines is a leader in sustainable wine-making. They compost all their grape waste and reuse their wastewater to grow more than 14,000 native plants in the last eight years.

"We need to be aware of what we're irrigating, why we're doing it and only giving what's required," said Dicey.

According to international water expert, Dr. Stuart Styles, in global terms we're pushing ahead. In New Zealand 85 per cent of farmers have changed to pressurised irrigation systems, which use water more more efficiently than those previously used.

"In California we still have almost 40 per cent that have surface irrigations," said Dr. Styles, professor at Cal Poly State University. "So we have a long way to go in that arena for efficiency on farms."

Another focus of the conference was changing the perception of irrigation. While it's often associated with dairy farming, that's not its only use.

At Central Otago's historic Bendigo Station their focus has predominantly been on producing merino wool. However, through irrigation they've been able to turn their masses of rabbit infested-land into vineyards.

"It's transformed all our lower country, all our pastoral country," said John Perriam, owner of Bendigo Station.

With water from the Clutha River, they're also building a shared water storage reservoir for the vineyards and new fruit orchards.

"It's really now developing into a new Garden of Eden here in Central Otago," said Perriam.

Farmers are hoping smarter and more efficient water use could help clean up the environment, and their image.

More than 400 representatives gathered at Irrigation NZ's conference this week to discuss the industry's future. Source: 1 NEWS


Watch: Air NZ explains Dreamliner engine issues that have disrupted thousands of Kiwi travellers

An in-house video for Air NZ staff has been publicly released today, explaining the Dreamliner engine issues that have disrupted thousands of travelers this week. 

The two minute video was designed for Air New Zealand's 12,000 staff, and explains why tests on the Rolls Royce engines on Boeing-787 Dreamliner planes have been enforced globally.

Around 6500 Air NZ passengers have, and will, have their flights disrupted into next week.

In layman terms, as the video describes it, the checks are looking for cracks in the blades of the compressor section of the jet engine.

"If the engines fail, they will be removed and sent to Singapore to the Rolls Royce facility for repair," Air NZ engineer Logan Horrell says.

Operators have been ordered to do inspections on a specific part of the compressor in the Rolls Royce engine much earlier than expected - at 300 cycles instead of 2000 cycles.

A single cycle in aviation terminology is when a plane takes off and lands.

Asked by Air NZ chief operating officer Bruce Parton whether these Rolls Royce engines are " lemons, or are they alright" Mr Horrell assures this is normal practice. 

"No, this is a normal engine process for any engine type. These engines go through teething issues and once we repair the engines we expect them to be just as reliable as any other engine," Horrell says.

Mr Horrell ends the video by assuring viewers that the engines were safe, and the tests currently being enforced were "conservative".