I have a goPRO hero also, but not HD. Under absolutely no circumstance are you to use the handlebar mount! I repeat, do not use the handlebar mount. It is crap. I've broken two already not from crashing or anything like that, but from the natural vibration in the road. The mounts are flimsy and shoddily made. They were nice enough to send me a new mount adaptor piece for free the first time. I made the mistake of using it again and then it broke again mid ride. luckily I was able to pick it up, but the case had been scratched on the lens. I gave up on this camera after that. I should get a new case since I dropped 100+ on the camera. I say if you aren't racing, get the helmet mount. They also have a chest mount but I don't know how good that works or how it feels.