2018 NOJIMA Megaphone of new Z900RS

NOJIMA (Nojima Engineering), which demonstrates its presence as a creative custom, such as making Naked’s dual suspension quickly developed a full exhaust for Z900RS. The official announcement is expected to be in the second half of February.

Megaphone matching the style of Z900RS

Nojima who is developing various types of exhaust systems selected megaphone type for Z900RS. It is manufactured with the concept of “combining the style of old age and the latest technology”, and its appearance is nostalgic, as well as clearing exhaust gas & noise regulation, as well as the upgraded performance which is definitely fulfilled.

It is a full exhaust type that adopts the original spiral collector of Nojima, and the material is painted with matte black for stainless steel. The price is scheduled to be released in the second half of February at 154,000 yen without tax. Of course, public road driving is possible with government certification.

[Z900RS NOJIMA MEGAHON (Nojima Megaphone) Price: 154,000 yen (tax excluded) Release date: late February] Prospect of launch with government certification. Since the material also affects the sound quality, they dare to choose the stainless steel material, and it is approaching the exhaust note at that time.

Spiral collector and power up all

The spiral collector which is also adopted in the nojima megaphone means the swirl (spiral) group. It is a unique structure of Nojima that generates spiral rotation of the exhaust gas at the exhaust system gathering part of a 4-cylinder engine and produces a suction effect.

“In the conventional 4-1 gathering, to compensate by reducing the diameter of the end part to give low middle speed, the power in the high speed region will inevitably drop by all means. When this spiral collector is adopted, Mr. Nojima who invented the said invention, it is not spoiling the power of the high-speed range by the suction effect of the spiral in the high speed region while giving low middle speed,” he explained.

This is also adopted for the Z900RS Nojima Megaphone, which contributes to ease of handling and performance improvement.

Nojima Engineering representative Hidetoshi Nojima (then in 2005) who responds to the interview with the spiral collector which was first released for XJR1300 in 2005.
Moriwaki is independent through W. Gardner and other mechanics. He is a heavy-duty engineer who also worked at the World Grand Prix and the All Japan Championship.It has a strong possibility also to dare in participating in Suzuka 8 with Naked ZRX 1100.

It has a strong possibility also to dare in participating in Suzuka 8 with Naked ZRX 1100.

Difference from Yoshimura’s cyclone

Incidentally, “Cyclone” which is also a spiral collector and Yoshimura’s exhaust system’s product name has the same structure as that of generating a spiral with exhaust gas, although its structure is different.

Popy Yoshimura who developed the collective exhausts for the first bike aimed at further improving the power is to create turning force in the exhaust flow by arranging the exhaust pipes of the collecting part according to the explosion order of each cylinder (See figure below).

The spiral collector of Nojima further pushes it and generates a turning force with a structure.

Upper row: The exhaust system of CB 750 (yellow racer) who participated in the AMA final game of Ontario 250 miles in 1971 is said to be a collective exhaust system for the original motorcycle.

The bottom line is the commentary on printed matter by Yoshimura in the 1980s, and the structure and merit of the cyclone exhaust is written. Cyclone system was adopted from 1980 and is now used as product name.

Original Source[ YOUNG MACHINE ]

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