Jeremy McWilliam🌟s experienced an eventful RS Cube debut at Valencia today (Friday), the ꧂Ulsterman falling from his new Aprilia as he acclimatised to the three-cylinder machine.

As well as his harmless - but no doubt embarrassing - accident, McWiꩲlliams also made sev♐eral unplanned trips off track during his 60 laps, as the notoriously twitchy prototype bit back at its new owner.

The former Proton KR rider went on to set a best time of 1min 37secs - 1.5🐼secs behind his fastest race lap from the season ending Valencia Grand Prix on the KR V5, but Jeremy openly admitted he was a little rusty after almost three-months away from action.

Meanwhile, on the other side of the garage, team-mate - and MotoGP rookie - Shane Byrne (lower pic) continued his steady progress as he knocked a further 0.2secs from his fastest Valencia test lap, putting him within 1sec of Colin🔥 Edwards' best from the GP.

ꦛJoinin𒀰g the MotoGP riders were factory Aprilia 250cc pilots' Manuel Poggiali, Sebastian Porto and Fonsi Nieto - Porto would surprise by setting the pace, lapping some 0.4secs faster than reigning world champion Poggiali, with Nieto a further 0.6secs adrift.

Testing concludes tomorrow (Saturday).

Aprilia Valencia test - day one:

1. Shane Byrne GBR Aprilia 1min 35.1secs
2. Jeremy McWilliams GBR Aprilia 1min 37.0secs

Comparative lap times:

2003 Valencia Grand Prix:Pole Position: Valentino Rossi ITA Repsol Honda 1min 32.478secsFastest Lap: Valentino Rossi ITA Repsol Honda 1min 33.317secsFastest Aprilia Lap: Colin Edwards USA Alice Aprilia 1min 34.292secs

Best pre-season Valencia test lap:12/12/2003 Max Biaggi ITA Camel Pramac Pons 1min 32.8secs

For pictures from the Aprilia test - updated daily - click on the "Latest Pictures" link in the MotoGP channel...