I was thinking about something like this. But I have no idea what I should look for or stay away from. I thought this might be a descent entry level unit.....
http://cgi.ebay.com/ws....240.lVI
The system on ebay has some good points. The bullet cam will do near DVD quality. Its the same resolution I'm currently running on my bullet cams. They retail for under $60. If you want to see what the bullet cam is capable of,
Click here. The flicker in the video is from a loose connection because I didn't tape a BNC connector together
Of the 4 lenses they include, only 2 are useful on a moving motorcycle, the 3.6 and the 6. The 2.97 is a fisheye and the 8 doesn't give you enough field of view. The lenses retail for $6-$12 a peice, so it isn't too bad.
For the long run, I'd toss the battey pack and wire the camera to bike power. Nothing worse than losing great ride footage because your battery pack dies. Don't assume that you'll get the 14 hours out of it they claim. I run the bullet cams and the DVRs off of the bike.
The DVR looks like the weak link in the system. They don't say what model it is, and the specs they show are incomplete. This usually means low resolution. It dosn't matter what the bullet cam is capable of if the recorder can't record all of it. I use Calgary Storage Systems CAPP06 recorders which record at 640x480x30fps and retail under $150. I'm not able to find the model they are using. I asked the seller about it and will post an update when I get a response.
Forget about a tank mount for a bullet cam. Tank maounts are for camcorders and it will take a bit of fabricating to make it work with a bullet cam. You will need buy/make a mount for your bullet camera. I'm currently redoing all of my mounts. I found that what's good enough for street riding couldn't handle the rigors of the track.
It depends on the DVR whether this is worth bidding on. If the DVR does 640x480x30fps, the price is good and it beats having to piece it all together and figure everything out for yourself.