"It's got the thumbs up," the message reads.
The fingers of the country's leading female cyclist, Sarah Ulmer, have sent word to Bloomfield that the new carbon composite track bike he built in his Ferrymead factory was performing.
The first text message said Ulmer was happy with the test run she gave it while preparing to race in the world cup event in Sydney.
The second message, two days later, said the bike "was turning heads".
Bloomfield, who has the high-tech carbon-fibre manufacturing business Dynamic Composites, has spent five months developing plans, building and testing a bike for Ulmer.
The two-time Olympian and Commonwealth Games medallist was unhappy with the Australian- made BT bike she was racing and wanted Kiwi-made wheels to take her to Athens and hopefully Olympic gold.
"I'm a pretty patriotic person and I wanted to ride a New Zealand- made bike," Ulmer said.
"I've always had to use Australian bikes and that hurts."
Ulmer made contact with bike builders around the country and stumbled across Bloomfield and one of the cycles he built for last year's Coast to Coast event.
New Zealand bicycle company Avanti also came on board and Bloomfield and Avanti embarked on a joint venture to build Ulmer a gold-medal winning bike.
Ulmer and her partner and coach, Brendon Cameron, met with Bloomfield in September to discuss the idea of a custom-made bike for Ulmer and the project gained speed in December when tests were started and plans drawn up.
The stylish bike is designed specifically for Ulmer with Cameron to take care of the mechanical side.
"He does most of it. I just want it to be a cool colour really," she said.
The design process involved gathering a broad range of data and put Ulmer and her bike on the track for live load testing.
The strategic placement of strain gauges on the frame and the handlebars gave Bloomfield an accurate basis for the engineering of a new frame.
Bloomfield said the faults in Ulmer's bike were clear from the track tests.
"When you're lifting on your handlebars it was all flexing and twists. We identified that very early on, that it was terribly inefficient and she was using a lot of wasted energy there," Bloomfield said.
His designs for Ulmer's new bike have targeted alterations in the connection of handlebars to frame.
"The handlebars on your normal bike, the stem clamps onto the steering tube above the frame," Bloomfield said.
"This bike, the handlebars are going underneath the frame. It's strikingly obvious when you see it. It's quite unique."
The result is a bike which is 30 per cent lighter than her old cycle, a bike which is "significantly stiffer" (both important factors in the bike's performance) and has refined aerodynamics.
"Basically it is as light and efficient as we can produce it," Bloomfield said.
"Also psychologically, I think it's quite an advantage. People are seeing it and going `wow'."
It attracted attention in Sydney as the world's best cyclists gather for the final round of the world cup, which started yesterday, and then the world championships in Melbourne later this month.
"Sarah said it's turned some of the Australian heads and the Italians have been taking photos."
Ulmer is likely to test Bloomfield's design in the competition in Melbourne.
By then the secret will be well and truly out. But it will also be too late for other teams to try building the same bike in time for Athens, the major race of the year.
"Sarah will be the only one on this kind of bike for the Olympics, that is guaranteed."
But he has no qualms about building more two-wheel wonders for cyclists around the world.
He said he already had Kiwi riders interested in his design and the bike was in a position to be commercially produced.
The technology used in the design is the same used in America's Cup yachting circles. Bloomfield, who has a yachting background, said he used some of the same materials and techniques utilised for yachting but applied them differently.
Getting hold of those materials for more bikes would also be easier second time around, he said. Bloomfield approached his suppliers in New Zealand when building Ulmer's bike but was after the highest grade carbon available. He eventually found a source overseas, a defence contractor.
"A week before it was due to be shipped, the US military put in a specialist order which cleaned them out," Bloomfield said.
"Sarah's first bike, shall we say, is probably flying around in Iraq."
Bloomfield is also yet to see all of Ulmer's "second" bike. "When it left it was just a frame. I haven't seen it with the wheels on or with Sarah riding it." He will travel to Melbourne to see the bike in action.
"We had a few jokes with her that first we wanted to see her ride to McDonald's on it and buy some lunch." But Bloomfield would rather see Ulmer ride to a gold medal in Athens.