Sylvain Guintoli says he is pleased with the progress made on the Yamaha R1 as the manufacturer's much anticipated return to the World Superbike Championship nears.

Fresh from the bike's official unveiling in Spain last week, Guintoli and team-mate Alex Lowes travelled to Portimao to put miles on the PATA-sponsored, Crescent Racing prepared bike before it is joined other teams this week.

In what will be the first true measure of the bike's performance compared to the likes of Kawasaki, Ducati, BMW and Honda, Guintoli - who is yet to lap with a timing transponder as he works towards focusing on his feel aboard the bike - is nonetheless content with what he has found so far.

"It's been a good test so far, with a lot of new parts and a detailed programme to work through," the 2014 world champion said. "It has been an interesting couple of days and it's great to be able to try the new parts both at Portim?o and Jerez, with such different track characteristics.

"Yesterday was quite damp in the morning and the work we have been doing has been quite in-depth, with a lot of time spent configuring and changing parts and settings, so we haven't concentrated on lap times or lap numbers, but the information and progress has been good.

"The new swing arm and forks have been positive, so we will now continue to work on the settings to get the best from these, with more focus on progressing the electronics when we get to Spain."

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No timing transponder...? Nice idea but, how can you truly evaluate new parts etc if there is no lap time data to back them up... surely Guinters can't tell his lap time to within 1 second for example... what if something 'felt' worse but was actually faster?