HELP BRAKES

[jack sprat]

Hi Jacksprat lovin the foum.lovin the bike .Can someone help .
On a track day so hard riding (maybe not for some of the other members), to my piont rolled the bike backwards down a slight slope engine running in Nt.
pullerd front brake to my supprise lever had no preasure came back to the bar pushed it forward and pulled it again nothing third time working, took it easy for a while then it worked fine .It happened again after standing for 1/2 hour.
Since then its been ok done some miles on the road. No probs, I always pump them before i move off but that was a shock. jacksprat

 

[bananaman]

Not had that.... sounds could be air but you say its ok now? I had it once when taped brake lever on when jacked back up on a slope but thats all. Not had a prob on track days either..