1951
The year 1951 was a year of very turbulent beginning for Hirosaki. The company focused on delivering simplistic, reliable vehicles to the people of the rural areas in Japan.
A New Motor for a New Company
The year started out strong for the company, as they introduced plans for a new series of motor. This motor would be used in all of their platforms for the company’s introduction into the world of automotive engineering. This motor would be known as the H (standing for Hirosaki) with the first variant being known as the 10A1. This meaning that the engine had a displacement of roughly 1 Liter. The engine was also the first of its kind, which is where the A1 designation is derived.
This new motor consisted of a cast iron inline four block with a cast iron head. This new motor is considered to be very innovative for Hirosaki as a whole, as this was both their first motor as well as their first to use a highly innovative Direct Acting Over-Head Cam valvetrain. This relatively complex valvetrain still maintained reliability within the motor but still allowed for the higher output needed to support the upcoming fleet of vehicles. This motor was tuned on the the cheapest fuel, which was 80 octane. This allowed the vehicle to cheap to refuel. Which was very important, especially in a country that was struggling as much as Japan. This engine produced 38HP at 5500RPM and 40lb-ft or torque at 3800RPM. These numbers, while being low, were enough to move the vehicle at healthy speeds.
Pictured Above: One of the first H10A1 motors being tested for defects.
The Beginning is not Always Pretty
On the morning of March 16, 1951 the Hirosaki factory was filled with joy and laughter as their first vehicle had finally been completed. The three founders as well as the small number of factory employees that had been working at the small shop rejoiced and watched proudly as their first creation rolled off the production line. The vehicle was very basic and did not have any features that could be considered even remotely comfortable. However, what the shop had produced would lead to something much greater in the future.
The vehicle in question was known as the Hirosaki Shigay. The name of this vehicle was rumored to have been mocked by foreigners, however, the name derives from being from the city streets. This name suited the vehicle well. The Shigay had excellent handling for the early 1950s and it’s safety features were honored as being some of the best in the country. The car was very popular among small families who needed a vehicle that would be able to transport them around. It also caught on with city dwellers who needed a vehicle to transport them around. The vehicle was not regarded in any way for it’s speed, however, the handling was a completely different story. The lead test driver at Hirosaki was quoted saying. “This thing is quick, wait, no it’s not quick at all, this thing is just super agile, like it corners well and gets after it.” This news came as a shock to many of the employees at Hirosaki, who had little to no experience working on cars, let alone designing them.
The Shigay was parked outside in the lot as it awaited the first customer to come buy it. The vehicle sold later that afternoon for a very modest 124,411 Yen (roughly 1124USD).
Pictured Above and Below: The first ever Shigay being driven home by it’s owner.
The Shigay is regarded as being a very simplistic yet functional vehicle. It was made to be maintained by just about anyone with a decent set of household tools and general mechanical knowledge. The vehicle did it’s job well providing transport for countless Japanese men and women. The Shigay featured front solid axle coil suspension and leaf spring rear suspension. The Shigay had a very basic interior with two front seats and three rear seats. The motor was coupled to a simplistic two speed manual transmission, which sent power to an open rear differential.
The Shigay in Review
Top Speed: 63MPH
Motor: H10A1
0-60: 97 Seconds
Designer: Azm613
Utility for a Recovering Country
During the early stages of the Shigay Project, the executives of Hirosaki had been taking notes on what the people of the Gifu Prefecture needed and wanted in their vehicles. They took note that the people wanted something that could be used both for utility, but also for running errands or transporting their families. This led to the creation of the Hirosaki Hanso. The name relates to the vehicles use as a means to transport large amounts of people and goods. This relatively large van utilized the same powerplant and driveline aside from the two speed manual transmission, which had been replaced by a more driver friendly three speed. The Hanso utilized the same suspension setup as the Shigay, with a solid axle coil setup in the front, and a leaf spring suspension in the rear. This helped maximize both simplicity as well as payload capacity. The test drives of this vehicle yielded nothing more than what could be typically expected of large van. It handled quite similarly to the Shigay, due to the two sharing very similar suspension setups. The Shigay began selling to various companies, and large families around the Gifu Prefecture in late 1951. It sold for an extremely reasonable price, similar to the Shigay. The vehicle was regarded for it’s drivability as well as its inviting and comfortable interior. The Hanso was also regarded for its innovative monocoque construction.
Pictured Above: A photograph of the very first Hanso van.
The Hanso in Review
Top Speed: ~70MPH
Motor: H10A1
0-60: 98 Seconds
Designer: OfficeFax