Other reviewers have praised this product: lightweight, little vibration, wide field of view. I'll just try to add a little bit to the already extensive advice on how to mount it.
I have a Bell helmet with vent holes and some channels molded on the outside for artistic effect. The mounting piece is flexible enough to accommodate some irregularities, so don't worry too much about minor bumps and ridges. I didn't see any way to mount it inside my helmet, but your helmet may be different.
The plastic arm holding the mirror needs to be tilted down about 20 degrees to bring the mirror in line with your eyes. Line up the arm perpendicular with the mounting plate, put the helmet on your head, and slide the mounting plate forward and back on your helmet so the mirror is 3 to 3 1/2 inches in front of your eyes. Closer to your eyes gives you a wider field of view in the mirror but obscures more of your forward vision. I prefer closer. Then rotate the mounting plate so the mirror is directly in line with your eyes or a little higher. You want to be able to move the arm up or down about 30 degrees from its centered position. Hold the plate in place while you take off the helmet. Then outline the location with a pencil.
I used a single-edged razor blade to pick up the adhesive strip from the white paper backing to avoid getting the oil from my fingers on it. Clean the mounting location with alcohol. Place the adhesive strip on the outline you've drawn and press it in place. Use the razor blade to pick away at the protective brown paper on top and peel it off. It's not easy, but the adhesive is permanent and the strip itself won't lift off, but the paper will.
Clean the mounting plate with alcohol, put it on the exposed adhesive, press it in place, and you're done.
Here're the manufacture's own instructions:
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MOUNTING DIRECTIONS
Note: Temporarily tape (masking tape) the mirror mounting pad to the helmet (It fits nicely on the inside of most helmets) until you are sure of the position, the adhesive is not forgiving.
Place pad on smooth, clean and fairly-flat area of the helmet. (on Foam helmets slight ridges or irregularities may be carefully sanded or filled flat to make the pad adapt better).
For optimum results, the mirror should be about 3 1/2" from your eyeball. Don't worry about focusing that close, your eye actually focuses on the Objects behind you.
Position the pad and adjust the inner ball joint so you can see the mirror in the upper outer corner of your eyeglasses or your field of vision.
Aim the mirror, using the front ball join so you can just see the outer edge of your ear.
Mold the mounting pad with your fingers to fit the shape of the helmet. Peel the adhesive and brown paper off the (white) backing paper. Stick the adhesive material to the side of mounting pad
that fits against your helmet, flat side for outside mount, the side with post for inside mount, peel off brown paper. Press the pad to place.
The front ball is set at an angle to the shaft. if you attached the mirror on the right side of your helmet rotate the shaft so the arrow points OUT away from the helmet.
If your helmet has a Iycra cover; mount the pad to the helmet then disassemble the rear ball joint. Put the cover on. With a hot instrument melt a small hole in the Iycra that just lets the ball stick
out and reassemble the mirror.
Do not use adhesives that have solvents that could damage your helmet or mirror.
| Auto Part Position | Left |
|---|---|
| Item dimensions L x W x H | 7.75 x 5.75 x 1.5 inches |
| Brand | Third Eye |
| Color | Black |
| Special Feature | Adjustable |
| Item Weight | 1.44 ounces |
| Operation Mode | Manual |
| Shape | Round |
| Lens Curvature Description | Convex |
| Item Package Dimensions L x W x H | 5.4 x 2.5 x 1.4 inches |
| Package Weight | 0.05 Kilograms |
| Item Dimensions LxWxH | 7.75 x 5.75 x 1.5 inches |
| Brand Name | Third Eye |
| Suggested Users | unisex-adult |
| Number of Items | 1 |
| Manufacturer | Third Eye |
| Part Number | 02 |
| Model Year | 2010 |
| Style | Does Not Apply |
| Sport Type | Cycling |
