Harrison has gone through for a flying lap.
Dean Harrison completes a first lap on the Honda Superbike at 130.897mph.
At Ramsey, Todd has taken over at the top of the timesheet on his Superstock BMW ahead of Harrison, Dunlop and Hickman.
Dean Harrison doesn't look like he's having a comfortable ride out there on that Honda Superbike. Bike doesn't look very stable right now.
Dean Harrison has made it to Ballaugh ahead of Todd and Dunlop on the timing screens.
A few more Glen Helen sectors through. Hickman is fourth fastest behind Dunlop.
At Glen Helen, Dean Harrison is fastest on this lap at 4m18.392s, followed by Todd on his Superstock bike and Michael Dunlop.
Davey Todd has hit the course on his 8TEN Racing Superstock machine.
Harrison is first through Glen Helen, followed by Hillier.
We'll start getting some timing data once the riders head through the Glen Helen sector split.
Dean Harrison had a bit of a look down on the left side of the Honda. He's pushing on though.
Peter Hickman gets away on his 8TEN Racing BMW Superbike.
Mike Browne is away on the KTS Racing machine. He's on his stocker first. Hutchinson follows Josh Brookes away.
Johnson on course now on his Superbike. Rob Hodson away after him, followed by Dunlop.
Hillier away next on Superstock Honda.
Qualifying on Wednesday is underway with Dean Harrison first up actually on his Honda Superbike.
John McGuinness will lead the field off and looks to be starting on his Honda Superbike. Dean Harrison the same, David Johnson too.
Michael Dunlop will start on his stocker too.
James Hillier confirms he'll start with a lap on his Stocker and then two laps on his Superbike, though both bikes are essentially Superstock machines.
He's on the Muc-Off-branded Hondas this year in the big bike classes.
Five minutes to go!
All practice laps this week are important, but I can't help but feel Michael Dunlop will be giving extra focus to his Superbike prep this year.
Not only because he's bedding in the BMW, but more for the fact that he couldn't win either of the Superbike races last year.
Interesting one to keep an eye on this evening is Davey Todd.
He's already said he's not ruling out running a hybrid Superbike/Superstock machine this week.
Just 20 minutes till bikes are due to be on track.
Thankfully, the weather conditions this evening look very good. Tomorrow looks uncertain, though, so the running tonight will be very valuable.
All five classes are due to have laps this evening. The schedule is as follows:
- 18:30 - Superbike, Superstock
- 19:20 - Supersport, Supertwin
- 20:10 - Sidecar