The Nicholas Roche Performance Team rider recorded a time of 3 minutes 25.429 seconds for the 3 kilometre Pursuit.
This knocked 1.5 seconds off the Irish record.
Meanwhile David Brailsford insists rumours and innuendo over the cleanliness of Team Sky aren't affecting them.
Questions over yesterday's dominant stage victory, led Chris Froome to say he plans to undergo independent testing after the Tour de France to prove he is not a drugs cheat.
The Tour de France riders are facing a number of major climbs on today’s 11th stage including the 2,000 metre high Col du Tourmalet.
