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-   -   DIY Bar End Mirror (http://www.bikeforums.net/electronics-lighting-gadgets/755534-diy-bar-end-mirror.html)

TromboneAl 07-28-11 08:34 AM

DIY Bar End Mirror
 
5 Attachment(s)
I made the bar end mirror shown below to test out whether I'd like this style of mirror. I just sanded down a dowel, cut it at the right angle and glued on a spot mirror from the auto parts store.

The verdict: The general style is OK, but the mirror I made is too convex. It's OK for cars that are close, but a car that is 100 yards away (significant when I ride on the highway) is microscopic. If I could get a less-convex mirror, I would use this instead off spending $20 on a Sprintech or Mirrcycle.

I'm hoping that a commercial bar end mirror will be less convex.

Attachment 212344Attachment 212347Attachment 212346Attachment 212345Attachment 212348

Richard Cranium 07-29-11 01:51 PM

Quote:

It's OK for cars that are close, but a car that is 100 yards away (significant when I ride on the highway) is microscopic. If I could get a less-convex mirror, I would use this instead off spending $20 on a Sprintech or Mirrcycle.
NO bar end is worth while.

The concept of a "bar end" mirror puts the "objective" - which is the mirror too far away from the user's eye. This results in images on the mirror being too small with respect to the field of view to be an effective means of judging the speed or velocity of any vehicles.

I suggest you at least try a mirror that is held close to the eye for checking rear views. The field of view is enhanced one-hundred fold.

sknhgy 07-29-11 07:13 PM

Quote:

Originally Posted by Richard Cranium (Post 13006152)
NO bar end is worth while.

The concept of a "bar end" mirror puts the "objective" - which is the mirror too far away from the user's eye. This results in images on the mirror being too small with respect to the field of view to be an effective means of judging the speed or velocity of any vehicles.

I suggest you at least try a mirror that is held close to the eye for checking rear views. The field of view is enhanced one-hundred fold.

I have to disagree. I love the cheapo bar end mirror I got from Walmart. It's on my flat bar hybrid. My road bike doesn't have a mirror and it needs one.
Keep working on your design. It looks like a very good idea. I was riding the other day and came across a large mirror that had fallen out of a vehicle and broke all over the road. I almost stopped to pick up some pieces to experiment with but it was on a hill, and I was hot, so I didn't stop.
Have you ever tried using a glass cutter? They work well. Seems like a person could make a good bar end mirror from a piece of high quality flat mirror. I love do-it-yourself projects.
One thing you might keep in mind. My Walmart mirror is infinitely adjustable. Is there some way to make your design adjustable? Maybe scavange a ball socket off something else, or mount it on a wire?

northerntier 08-01-11 04:43 AM

Quote:

Originally Posted by Richard Cranium (Post 13006152)
NO bar end is worth while.

NO absolute w/o facts to back it up is worth reading.

I've used a helmet-mounted Third Eye for years, and this spring switched to a bar-end. It's not as good as the helmet-mounted one, but then it's also a bit more convenient. I can toss my helmet in a bag on the ground, wherever, and the mirror doesn't come off. I don't have to re-adjust the mirror after each trip either.

zig.zag 08-09-11 06:02 PM

My bar end mirror vibrates so bad that it is virtually useless. By the time I can discern that there is a car in the mirror, I can already hear it. My helmet mirror was more useful, but as with northerntier's experience, broke off. I pretty much go mirrorless without problem. I headcheck before veering into traffic anyway so I don't really miss it.

fietsbob 08-09-11 07:25 PM

there is one that mounts by slipping it under the brake hood on Shimano Brifters.

TromboneAl 08-10-11 09:47 AM

I've since bought and installed the Sprintech bar end mirrors. They are much better than mine, because they are less convex. It's still hard to check cars that are 100 yds back.

hotbike 08-11-11 10:18 AM

Let me first say that mu vision is NOT 20/20. Actually it's 40/200, with my right being my good eye. I can NOT use a helmet mounted or glasses mounted mirror.

I use a Bar End Mirror. I have two Blackburns, a Mirrycle , and a Rhode Gear. The Rhode Gear is round, the Blackburns are oval, and both mount with a Velcro strap. The Mirrycle is round and mounts with a wedge plug inside the bar end. I don't like the Mirrycle because it became cloudy- I don't know if it is defective, or if it got left out in the rain too much. The Mirrycle also is the most convex, making the cars seem the smallest.
The Blackburns and the Rhode Gear are excellent . I would recommend them to a friend. All are easy to readjust if a pothole knocks them out of position.

I would rather have a bar end mirror- I want to see the cars behind me, not check the zipper on my trousers. The mirror needs to be to my left.

John_V 08-24-11 07:02 AM

1 Attachment(s)
Quote:

Originally Posted by fietsbob (Post 13060134)
there is one that mounts by slipping it under the brake hood on Shimano Brifters.

This one from Mirrycle. I have one on my hybrid that is a bar-end mount.
http://bikeforums.net/attachment.php...hmentid=215863

I can never focus properly on helmet and eyeglass mounted mirrors and can't really tell what's behind me as it's all a blur.


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