kanadianiceman: I thought so too, but I just tried it on the seat post, and as davidwhitefield says, the inside of your thighs hit it when pedaling. No way it will work.

I'll figure something out and post the solution I come up with. A friend emailed me a pic of a conventional camera with a custom looking mount that looks like it attaches above the rear brake.

I know it can be done, check this road cycling racing video: http://www.flickr.com/photos/s...

I've tried a couple different approaches, and at the moment I think the best way is a variation on what davidwhitefield suggested. Pictures of the setup I'm using are here: http://tinyurl.com/mlkx2p

Some video samples:
http://vholdr.com/video/seward... (mix of front + rear)
http://vholdr.com/video/ski-se... (rear only)
http://vholdr.com/node/30705 (handlebar mount only)

I think the rear view is best for group cycling situations because it captures the action behind you.

My setup currently uses a micro saddle bag and some high density foam to pad the camera. I'm keeping my eye out for other saddle bags that might work better. This one zips up from the bottom to the top and so it cinches nicely around the camera. I don't think that bags that zip from a side will work.

A couple hints:
1. Make sure the bag is cinched tightly to the seat and to the camera.
2. Tape the record button to "record" to avoid it vibrating to off
3. Make sure seat post attachment fits--some seat posts these days have a large diameter.

Good things about this setup:
1. With all the padding, vibration is pretty low, so picture quality is pretty good.
2. No wind noise. But if you want sound ALL noise is pretty muffled. Personally I've been adding music to the vids shot with this setup because there really isn't anything meaningful to hear.

Things I don't like about this setup:
1. This works well as long as you don't want to frequently turn the camera on and off. I've been using it in bike races, and just set it up to record the whole race.
2. I recommend taping the record button on so it doesn't vibrate off. This adds an extra hassle if you want to record shorter clips--you'd have to disassemble the whole thing.

A couple other thoughts about using VholdR cameras in cycling--
1. The helmet mount is a non-starter. The point of view is too high and does not give a realistic perspective.

2. The handlebar mount is of limited use. While it does attach securely, staring at rider's butts is not all that interesting for long periods. You can get some good paceline clips if your group is rotating, though. Try positioning it under the handlebars if shifter/brake cables are in the way, or for a less intrusive setup. Test ride it to make sure it doesn't interfere with cycling movements.

3. I'm going to start experimenting with the handlebar mount in a variety of positions, like 90 degrees to the direction of travel, for example.

4. I played around and fabricated a prototype alternative seat post mount using spare parts. The idea was to use a clamp around the seat post, then attach a ~6" extension arm to the clamp, then attach an adhesive VholdR camera mount to the extension. This way the camera would just stick out more or less directly behind the seat.

It worked fairly well, but the parts I used were all plastic and rather flexible, so there was too much movement in the resulting video. The good thing about this kind of setup is that you could turn the camera on and off without having to disassemble the setup.

I think this would be the ideal setup--if someone figures a way to fabricate a setup like this, please post.

#4: Yeah, something like that might work, but you'd need to attach 2 clamps to the seatpost to form the triangle, yes? I think sturdier materials (maybe a steel or aluminum "L"?) would be preferable.