Motorcycles worries about reliability: Yamaha sends two motors to Japan

14:51  23 july  2020
14:51  23 july  2020 Source:   de.motorsport.com

2020 Yamaha MT-07

  2020 Yamaha MT-07 2020 Yamaha MT-07

Yamaha sent engines used by Valentino Rossi and Maverick Vinales at the MotoGP Spanish Grand Prix back to Japan for inspection following reliability concerns. Motorsport.com has learned that Vinales used three of his five allocated engines across the Jerez weekend, while Rossi used two .

The official global website for Yamaha Corporation and Yamaha group companies. Shortly thereafter, he successfully completed the first reed organ to be built in Japan . Establishes Yamaha Motor Co., Ltd. (Splits off the motorcycle division).

Yamaha got problems with the motors in Jerez 1 - Therefore new sensors are installed - Two motors sent to Japan for precise analysis

Yamaha is in Jerez 1 with the double victory of Fabio Quartararo and Maverick Vinales successfully started the 2020 MotoGP season. However, after the race there was not only cheers, but also worry lines in the Japanese-Italian team. The new engines caused problems and were sent to Japan for analysis.

Valentino Rossi had a technical problem last Sunday. In the last third of the 25 laps, his engine lost some power. Six laps before the end of the race, the electronics switched to a safety mode to avoid major damage.

2020 Yamaha TT-R125LE

  2020 Yamaha TT-R125LE 2020 Yamaha TT-R125LE

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As a result, Rossi rolled out on the side of the track and had to give up. The Italian used two engines last weekend. Teammate Maverick Vinales has already used three engines.

At the end of May, the Grand Prix Committee decided how many engines a driver can use in a shortened season. Up to 14 races, five engines may be used. The Aprilia and KTM concession teams may use a total of seven engines.

Yamaha sent a Rossi and Vinales engine to Japan for analysis this week. This means that Rossi will use his third engine in Jerez 2 and Vinales will use his fourth of a total of five.

Takahiro Sumi © Provided by motorsport.com Takahiro Sumi

Takahiro Sumi is technical manager of the MotoGP team

Photo: Yamaha

However, all engines are still in the contingent and can still be used. The two engines that were sent to Japan are sealed and must not be opened. With mini cameras and sensors, they can still be examined precisely.

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  Yamaha’s TMAX Tilting Trike Yamaha’s TMAX Tilting Trike

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The exhaust gases are also measured with sensors. Before a season, every manufacturer has to send a list of parts to FIM, including sensors. Since the development is frozen, permission must be asked from the MSMA manufacturer association if you want to replace a part.

This is possible for security reasons. Yamaha asked the MSMA that they wanted to replace sensors on the exhaust. The rest of the manufacturers learned that Yamaha was concerned about reliability.

Yamaha sensors used so far, which measure at a temperature of 1,200 degrees Celsius. Now sensors are installed that can also measure the range up to 1,200 degrees Celsius. It has not yet been confirmed whether Yamaha needs to reduce the speed and the power somewhat to ensure reliability.

With images from Motorsport Images.

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