How's 19 grams? I use this one by Sprintech. (Their picture; not my bike.) I use one only on the left side (being in the US), but you can also get them for the right or as a pair.

I think the computer with the rearview camera is interesting, especially since they are making it so you can add on other modules such as GPS:

http://www.cerevellum.com/

Still, I don't see myself wanting one.

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"I can't understand why people are frightened by new ideas. I'm frightened of old ones." -- John Cage

http://weightweenies.starbike.com/phpBB ... 928#126928

I don't wear them for Time trials, .... no one ever passes me.

In mass start races the information and tactical advantage the information gives you is worth far more than the 1.376 watts it takes to drive a small helmet mounted mirror through the air at 28 mph.

I'm betting no one has tested it in a windtunnel.

I wore the dorky third eye eye glass mirror for years. (There were times I wished I had looked an extra time before turning.) My guess is it was very non-aero. But, hey, I'm an old guy and don't go that fast anyway.

I switched last Spring to the Sprintech; it looks like it should be more aero, but without a windtunnel there's no real way to tell. I think it makes me faster, but my average mph is really dependent on how much riding I've done and the shape I'm in.

There is another bar end mirror which is even smaller and narrower, but I don't know who makes it.

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"I can't understand why people are frightened by new ideas. I'm frightened of old ones." -- John Cage

http://weightweenies.starbike.com/phpBB ... 928#126928

In the past I used a small mirror that fits inside my glasses. Very small and works OK. I never weighed it but I would be suprised if it was more then three grams and no effect on areodynamics or the more importantent style factor
or
Do I need a GPS/ powermeter with cellphone/mp3 and rearview camera (does it beep when you go backward?) with altitude and grade functions. Will it tell me if my tire pressure is low? Will it fully integrate with the new electronic gruppo that shifts for me? Will it come with cup holders

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WW Velocipedist Gargantuan

Even if you did move over it would be too late. And actually moving away in the same direction that the car is coming at you proves to be the wrong move.

Where do you live? Are there alternate roads you can take? The sun setting and traffic are things you do not have control over so just deal with it. It should not affect your ride. Alternate route is one solution.
You need to understand where I come from and that is New York City where one rides in traffic not along side it. If you do, you are more likely to get hit at intersections. You have to be 100% focused and be aware of the line you are taking while scanning ahead for potential risks and situations. Your position on the road is key and you need to look before you move. I do not truth mirrors because they will not be able to tell how close the vehicle is really and they have blind spots. The thing that cyclists need to realize is that we are responsible for where we are on the road. We cannot rely on the judgment of the motorist. We have to take the initiative to avoid motorists not the other way around. Because if you don't you will always lose out. So a good rider knows where he/she is on the road, scans up ahead for potential dangers, looks back before switching the line. Now that I live in a much smaller city everything is slower, smaller and like a parking lot.

That sounds like an interesting option. Where did you get it?

_________________
"I can't understand why people are frightened by new ideas. I'm frightened of old ones." -- John Cage

http://weightweenies.starbike.com/phpBB ... 928#126928

Cars have mirrors, race cars have a bunch of mirrors. It is a fashion thing on a bicycle. However, for those who are against the mirror thing, learn to look under your arm.

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2011 Specialized S-Works Tarmac SL3 (If the insurance allows)
2010 Specialized Tarmac Pro
2008 Custom Columbus XLR8R Frame (Team Branded)
2006 Specialized S-Works E5 Aerotec - Stolen
1995 Pinarello Stelvio (Fixed Gear)

www.velotique.com/mirrors.htm

they call it a micro mirror. I used them mostly to keep an eye on the chase group (as they passed me ) Learning to look over your shoulder/under your arm while keeping your line is still a valuable skill even with a mirror

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WW Velocipedist Gargantuan

I like it and would try it, but the shipping from CA to US is more than the cost of the mirror!

{edit} I found one on eBay for less and ordered it.

_________________
"I can't understand why people are frightened by new ideas. I'm frightened of old ones." -- John Cage

http://weightweenies.starbike.com/phpBB ... 928#126928