Debutant Neil Fachie surprised even himself with victory in a world-record time on the opening day of the UCI Para-cycling Track World Championships in Manchester.

Fachie and tandem pilot rider Barney Storey triumphed in the B&Vi one-kilometre time-trial in one minute 02.217 seconds, surpassing the previous best by 0.647secs, while Simon Jackson and pilot David Readle were second.

It was the first of two one-twos for the host nation on the opening day as Darren Kenny pipped Rik Waddon to gold in the CP3 one-kilometre time-trial by 0.041secs.

Fachie, who switched to cycling earlier this year after competing in athletics in Beijing, was thrilled with the win, which bettered the previous world record set by Storey and Anthony Kappes in winning Paralympic gold in China.

"It's just amazing," said Fachie, who is visually impaired..

"I knew we were going really well in training and I knew we were in with a shout.

"To finally be able to do it and put all the training to good use, it hasn't quite sunk in, but I'm delighted."

The 25-year-old from Aberdeen added: "I never got to this level in athletics and I can't wait to get up on the podium and experience it now and have my medal round my neck.

"To be a world record holder as well is just phenomenal."

Storey, who piloted Kappes in Beijing and Jackson at May's BT Paralympic World Cup in Manchester, said: "All the different people I keep working with, it just keeps rejuvenating me.

"It gives you extra motivation to push on and push a bit more."

Jackson, who is a three-time Paralympic judo champion, was magnanimous in defeat.

The 37-year-old from Rochdale said: "It's the hardest silver medal I've ever won in my life.

"We gave everything we had."

Jackson's partnership with Readle, who works in psychological sport for British Cycling under Dr Steve Peters, psychologist to the likes of Sir Chris Hoy, was only four months old.

"I was just happy to help with Simon," said Readle, who will return to his day job on Monday.

Defending champion Kenny claimed his 11th world champion's rainbow jersey and his second of the year following his road race victory at the UCI Para-cycling Road World Championships in Bogogno, Italy in September.

The 39-year-old from Dorset, who has cerebral palsy and has won six Paralympic titles, was behind Waddon at each of the first three splits before pulling back to win on the final lap.

"I didn't know how far down I was," Kenny said.

"I just went out there and did what I could do."

Waddon, who is from Manchester, told Press Association Sport: "With his endurance background he's able to hold it a little bit more on the last lap - that's where I lost it."

All six Paralympic champions named in Britain's squad for the first global event post-Beijing are in action on day two, with Kenny and Waddon riding the men's CP3 three-kilometres individual pursuit.

Sarah Storey competes in the women's LC1 three-kilometres individual pursuit, while Mark Bristow, Jody Cundy and Simon Richardson are in action in their respective men's one-kilometre time-trial events.

Aileen McGlynn teams up with Ellen Hunter in the women's B&Vi equivalent, where they will face team-mates Lora Turnham and Rebecca Rimmington.