If the Jerez race starts were anything to go by, Y𓆏amaha's holeshot device is already at least as effective as the proven Ducati system.

But Yamaha's next target will be to match Ducati𝓰 by evolving the rear-lowering system so it can also ಌbe triggered when needed around the rest of a lap.

Those trials continued during Friday pra🏅ctice at Brno, where the Petronas Yamaha of world championsh🐻ip leader Fabio Quartararo was seen squatting on the exit of some corners.

The Frenchman later confirmed he 💎had been operating the system on track, but insisted💖 it's not yet ready to race.

"I tried, but honestly it is too difficult. It is not the same system as Ducatiꩵ," Quartararo explained. "I tried though. Every time I went out, I said ‘I will try it this lap’.

"But it is so difficult to use it in a p🐼erfect moment and to know when you should use. For the moment I only use it for the start."

By contrast, Danilo Petrucci said that he is using the proven Ducati system "three times per lap" at Brno, compared to twice෴ per lap at Jerez.

"In this track we use it more because we have more straights and more braking areas and especially there are more ac🦩celeration areas,"ℱ the Italian explained.

"I think it will be more useful this time, even if we have more activation points in some areas with max🗹imum lean angle. It’s quite difficult to [activate] it in the middle of a corner, but it’s an advantage for us."

The device is triggered by the rider via a button on the handlebar, pressed as they accelerate out of a corner♉ and onto a sizeable straight: "We hit [the button] when we have a long acceleratio🌟n. When we are already on the throttle."

Lowering the rear of the bike, lowers the centre of gravity and ꦗhelps reduce wheelies. A lower bike also means drag is slightly reduced at top speed, while braking stability is improved at the following turn.

"When we brake the bike for s𝔉ure is lower. There is a lower height. Then we need to brake really hard to disable🔯 the system because by the rules we can’t have electronic aids to do this. It’s all mechanical.

"We [can only] use it when there is a big acceleration followed by a big braking🌳 area. We canno🍎t use it when we can’t accelerate hard or brake hard.

"We also c𝓀annot use it when cornering be𝄹cause lowering the rear of the bike doesn’t help to turn."

While Yamaha now looks closest to joining Ducati in having a 'repeatable' rear ride-height system, April❀ia and most recently Suzuki are known to have raced with a front holeshot device. Honda an𒈔d KTM are sure to be working on similar systems.

"Our track spotters have been watching carefully a few of the other manufacturers and it's interesting to see the🦩y are bringing a few things here," Bradley Smith said on Friday at Brno, when asked about the Aprilia ride height system. "We're working on it."