Robinson (17) finished seventh in the final of the F46 javelin with a personal best throw of 32.58m.
The Taieri College pupil, the junior world record holder, started with two moderate throws, 28.44m and 29.91.
She then produced a stunning third throw of 32.58m, nearly 40cm longer than her New Zealand record throw in Wellington in March.
Robinson, who moved from Hokitika to Mosgiel to train with coach Raylene Bates, completed the final with throws of 30.15m, 31.31m and 31.45m.
The event was won by Katarzyna Piekart, of Poland, with a world record effort of 41.15m. Nataliya Gudkovan (Russia) won silver and Madeleine Hogan (Australia) won bronze.
Robinson, who was born with a left arm shortened just below the elbow, is just a baby in elite track and field, and will be a legitimate gold medal chance in four years.
Meanwhile, the rock star of the New Zealand team in London, swimmer Sophie Pascoe, claimed her third medal in three days, and is not done yet.
The 19-year-old blitzed the field in her 100m butterfly heat with a world record time of 1min 4.97sec, and claimed gold in the final in 1min 4.43sec, breaking her own world record.
Pascoe now needs just one more gold medal to equal the three golds and a silver she secured in Beijing four years ago, and has three more events up her sleeve.
If there was such a thing as a blip in a world record and gold medal winning performance it would have been the final touch, where it seemed an age before Pascoe stopped the clock.
"I guess I just didn't time it right. I guess it's those little things, but obviously I got it just in time and got in there," Pascoe said.
"Tonight was about racing the clock.
"It's about racing the time. You want to go out there and do a PB, that's the goal.
"It's not about the gold, it's not about the silver or bronze."
Pascoe will have two days to freshen up before the back half of her competition, starting with the 100m backstroke tomorrow.
This is another strong event for the leg amputee, giving her powerful shoulders a chance to bring home another gold.
Wellington's Mary Fisher continues to surprise in the pool. Following a silver in the 100m freestyle, the 19-year-old added bronze to her collection in the 50m freestyle.
Fisher's 31.67sec was a personal best and a real triumph in her first Paralympic Games.
"We've been working on improving my stroke and times and it's definitely paid off," Fisher said.
Fiona Southorn again performed well at the velodrome, setting a personal best in the women's C5 500m time trial.
Southorn's time of 41.76sec briefly slid her into the silver medal spot. She eventually finished seventh.
Today, Southorn will join the men, when the 42-year-old will become the first New Zealand woman to ride in the team sprint. Southorn will team up with Nathan Smith and Chris Ross in the event.
The New Zealand Paralympic yachting team started its campaign yesterday.
The Skud 18 pair of Tim Dempsey and Jan Apel secured two ninth placings, and Paul Francis in the 2.4 boat had a 14th and an 11th.
