Bartolini's recruitment is the result of a drive from Yamaha in a bid to improve its form, after going from title contenders in 2021 and 2022 to a first winless season in 20 years in 2023.
The Italian previously served as Gigi Dall’Igna’s right-hand man at Ducati before he was approached by Yamaha.
The Japanese marque also poached aerodynamics engineer Marco Nicotra from Ducati for 2024.
At the end of pre-season testing, Yamaha appeared to have found more top speed from its M1, but the grip issues in qualifying trim that have plagued it for some time persisted – much to Quartararo’s frustration.
Quartararo says Bartolini can’t be expected to make a big impact right now given how fresh to the project he is, but says he “really loves” his way of working.
“The thing is, Max arrived a few months ago – I don’t know if even two months, one and a half,” the 2021 world champion said.
“So I can’t expect him to understand everything, he needs to understand the bike.
“[But] already the way we are working is really good, I really love [this] and this is why I’m really motivated because I feel like we are really working in a good way.
Source: Autosport