Yamaha's decision to leave the Valencia MotoGP test on Tuesday evening and switch to Aragon, in the hope of finding better weather, backfired when conditions proved to be worse than at Valencia on Wednesday.
While the likes of Dani Pedrosa were able to clock up 30 slick-tyre laps on Wednesday afternoon at a drying Valencia, new double world champion Jorge Lorenzo managed only 'a handful' of dry laps before ran arrived at Aragon.
Lorenzo, who did not ride in the wet on Tuesday at Valencia, then suffered a fall when he ventured out in the wet after lunch at Aragon.
Yamaha explained that 'as a result of car testing yesterday there was an excess of rubber on parts of the track, causing [Lorenzo] to lose grip and have a low-side crash on turn 16. Lorenzo was uninjured in the crash.'
Lorenzo set a best lap time of 1m 57.725s from his nine laps around the WSBK Aragon layout, which used a tighter final turn than the MotoGP configuration.
For comparison, the WSBK Aragon race lap record is a 1m 58.251s, with the official best lap a 1m 56.552s.
“For sure these last two days we've been unlucky with the weather and couldn't practice for many laps,” said Lorenzo.
“It was important to get practice here because we have things to try for the chassis and engine for the new season so we can give as much information as possible to the engineers so they can keep working over the winter in Japan.
“Now we will have to wait until the next opportunity.”
Seven time MotoGP champion Rossi rode for 28 wet laps during his M1 return at Valencia on Tuesday, and managed only a brief dry run before the rain on Wednesday.
Rossi and Yamaha are unable to speak publically about their new partnership until the Italian's Ducati contract ends on December 31st.
Yamaha team director Massimo Meregalli summed up the testing as follows:
“Unfortunately in these two days we haven't been able to test the majority of things we needed to. We don't want to dwell on it and most importantly both riders feel confident in the base set up of the bike.
“We will now have to wait until Sepang to continue. The critical testing is for the engine development so our test rider will continue with that in Japan.”