In the space of two weeks in November, Eugene Laverty rode two different MotoGP bikes and a WorldSBK machine.

The Irishman finished his full-time MotoGP career on an Aspar Ducati at Valencia, made his debut on the Aprilia RS-GP in the following test, then began preparations for his 2017 World Superbike return on an Aprilia RSV4 at Jerez.

Laverty's last day at Jerez also saw him on track at the same time as some MotoGP riders, allowing an interesting comparison.

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"Horsepower is the biggest difference, but we can brake pretty strongly," Laverty said. "The rest - mid-corner to exit and down the straight - they [MotoGP bikes] do get going, but I was surprised I could pull time on them on corner entry."

The new Milwaukee Aprilia rider added that the character of the WorldSBK Pirelli allows for harder final braking than the MotoGP Michelin.

"It's not like everyone thinks with the Pirelli front tyre; you need to really squeeze the brake in final braking," he said. "This year we haven't been able to and I've got into a style of not braking so strongly.

"So I'm improving there, but it takes time after a season of not being able to do that."

And is there much difference between the RSV4 superbike and its RS-GP 'big brother'?

"I expected the superbike to feel longer, chunkier and all the rest. But the bike feels really similar. It's a proper little race bike isn't it? It's the tyres and horsepower that are the main difference," Laverty said.

"The superbike feels easier in one respect because the horsepower is less, but around a track like this the thing is moving around and you are having to work hard."

Laverty will be an Aprilia MotoGP test rider next season, alongside his WorldSBK race commitments.

By Peter McLaren