Father and son from Llandyrnog near Denbigh build rollercoaster in garden after youngster dreams up design during lockdown

Leigh Downing, of Llandyrnog, teamed up with his son Charlie, 21, to create the ride for their 11-year-old nephew / cousin Calden James Ashley.

With Calden, who attends King’s School in Chester, unable to see his friends during lock down, the trio hatched a plan and as soon as restrictions were relaxed, the two households met up to make their idea a reality - a unibody roller-coaster.

The ride, which is human powered, is about 70 metres long and boasts a three metre drop.

Leigh said: “Calden has been rollercoaster mad for as long as I can remember. Even before he was tall enough to ride, he was designing them on a computer.

“It all started a couple of years ago when I had an operation and was off work for a couple of months.

“I gave Calden a wooden marble roller-coaster kit I had when I was a child. He was so thrilled with it. My son, Charlie, built him a small wooden rollercoaster that he could ride. He was absolutely ecstatic with the end result, but a couple of years on had got a little bored with it.

“We hatched this latest idea during lockdown.

The impressive human powered rollercoaster in the garden! Picture: Leigh Downing

“We built it with a wooden frame for the structure, PVC pipe for the rails, and 462 wooden bearers that we mounted the rails on, all of which Charlie cut and filed a 40mm profile in. We did it all in eight days.”

Charlie, who passed his maths GCSE when he was 11-years-old and skipped his A Levels to go straight to university to study maths and science, is a hobby mechanic. He was 15 when he achieved his degree.

Leigh, who has a background in engineering, added: “We said to Calden, you do the design. He designed it from start to finish including every twist, turn and bunny hop.

“We had to rein in his expectations. At first we thought we could do the drop two metres. We built the car and put it down and then went to three metres

“He loved it when he saw it but he had been involved in making it so he saw it as it came along."

Leigh said when it came to making the car, there was 'lots of trial and error'.

"He added: "We had many injured hay bales as the car dismounted the tracks with them on board. We resolved this with discs cut out of a chopping board mounted to the bottom of the side wheels.

"We also did hay bales and human trials. You could say Simon, Calden's step dad, was the guinea pig. He insisted on riding it first to make sure it was safe, followed by my mother Wendy who’s disabled and we had to lift her into the car."

Leigh said the build has brought Charlie, Calden and himself together.

“It was good fun. We worked well as a team and had lots of laughs along the way, and I feel we did something absolutely amazing,” he said.

"Calden was very cautious at first. We got him parked at the top and just let go and oh my god - we were exhausted. It is human powered to get to the top. Then you climb in the car and off you go.

"It is too frightening for me. I have had a go and Charlie has had a couple of goes.

"After months of lockdown and Calden not able to see friends... as soon as they said two families from two households could meet, we said we would built it."

Materials were bought from Richard Williams in Ruthin and Screwfix in Denbigh.

“They really didn’t believe me when I told them I was building a rollercoaster until I showed them the video,” Leigh added.

“Our next plan is a full steel rollercoaster with a corkscrew and a loop which, of course, will rely on Charlie’s maths degree coupled with Calden’s rollercoaster designs.”