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Storey: outpaced rivals
Sarah Storey won the LC1-2/CP4 individual pursuit on another day of success for Great Britain's Paralympic cyclists at the Laoshan Velodrome.
Beijing is the 30-year-old's fifth Games, but first on a bike having switched from being a swimmer.
Storey's winning time of three minutes 36.637 seconds lowered her own world record for the discipline. American Jennifer Schuble was second with China's Dong Jingping third.
The Manchester athlete made her Paralympic debut at Barcelona 16 years ago and won three golds, three silvers and a bronze in the pool under her maiden name Bailey.
Track domination
It was good day all-round in the Storey household as Sarah's husband Barney clinched his second gold of the Games shortly afterwards.
Barney was Anthony Kappes' tandem pilot in the B&VI 1-3 sprint, the duo defeated Australia 2-0 in the final.
And the men's sprint team completed a spectacular track cycling campaign for Britain with a third gold of the day and 12th in total.
Darren Kenny, Jody Cundy and Mark Bristow clocked 49.323s to defeat China in the final.
Britain won all bar one event in which they were involved, following on from last month's Olympics where the team won seven out of 10 titles.
Out of 21 Paralympic cycling events, Britain earned 12 golds and one silver medal, with one fifth-placed finish.
Swimming success
Over at the National Aquatics Center, Britain added their fourth and fifth gold medals of the day.
Heather Frederiksen set a world record while triumphing in the women's S8 100 metres backstroke, team-mate Rachael Latham was fifth.
Frederiksen was a promising able-bodied swimmer before an accident ended her career.
The 22-year-old from Lancashire thought she would never swim again, but was inspired by the performances of friends Rebecca Adlington - a double gold medallist in last month's Olympics - and Joanne Jackson, who won bronze, to get back in the water.
"When I learnt to swim again, I thought Beijing would be a bonus for me and it would be London that I'd go for," said Frederiksen, from Leigh.
"To do something like Becky Adlington - when she won that gold medal I said to my coach 'I want one' - it's a dream come true."
The men's relay quartet of Matt Walker, Graham Edmunds, David Roberts and Robert Welbourn successfully defended the title they won in Athens, clocking a world record 3m 51.43s to finish ahead of Australia and China.
It was Roberts' ninth Paralympic gold to close in on Dame Tanni Grey-Thompson's mark of 11.
Jon Fox added a silver in the men's S7 100m backstroke, while Sean Fraser and Louise Watkin took bronzes in their respective men's S8 and women's SB9 categories of the same discipline.
Weir pipped
But a gold medal for the athletics team remained elusive. Wheelchair racer David Weir finished second in the men's T54 400m and also saw his world record bettered by China's Zhang Lixin, who took gold in 45.07s.
"I know I'm quicker, I'm as quick as him," said a disappointed Weir, who is set to undergo tests after feeling ill since Sunday.
"My heart is working overtime as soon as I wake up. I know when my body's not right."
Weir has a tough programme with the 800m, 1,500m, 5,000m and marathon to come, but he could yet pull out of one event or more of the endurance events.
Meanwhile in Hong Kong, equestrian rider Felicity Coulthard won silver in the Grade II individual freestyle test on her horse Roffelaar.
