Optics (TIRs) Comparison Beamshots

Top Top work mate. That really helps. I’m sure the differences are more pronounced in reality too.

Thanks GB. The 10 and 25 dont look that different until you see the mouse over. Is there that great a difference?

No, I don't see much difference between the 10 & 25 in reality (hence the need to take photos and compare them as mouseovers). The difference between 45 & 60 is noticeable in reality.

-Garry

Thank you for sharing this. Great idea.

Great pics, thanks for sharing.

thanks for sharing Garry.

Some questions:

Have you tried them for mountain biking? If so which works best for mix of
trail with tight switchbacks?

how far is the throw on the mule? The spread is amazing.

Excellent pictures, most helpful.

I haven't been on a bike with them yet so I can't comment. I hardly get time on my bike anymore. I've been on a quest though for the perfect bike light (for a specific ride and when I can get into night riding).

Throw on the mule will depend on how hard you drive the LED. My 1.4A mule headlamp reaches approx. 50 feet on high. This one in the photo at +/- 3.5A . . . I'm not sure (can't remember and it's a little more than the photo shows). I'm gonna guess around 80 feet. The 60 degree optic definitely gives more throw than the mule.

-Garry

Great work Garry. I've always felt all TIR's look the same. You just proved me wrong. Thank you for that. :)

Can’t see pics.
Repost them with another service please.

Ugh! I noticed this earlier. Nothing I can do about it right now. Sorry.

-Garry

Great post, Garry! I love the 10-degree TIR the best. Great shape to the beam.

If anyone wants to see Garry's pics just right-click any one of them and open image. It'll take you to his photobucket folder where you can see all the pics. They are all named so you know what you are looking at. ;)

Awesome. I never bothered trying to click them…
Thanks for the help.

Dulp! I should have realized that! Thanks Johnny!

-Garry

I've just placed an order at LED Supply for some Carclo optics. I will try to get the same test done with those (trying to keep beamshot setups identical as much as possible).

I've ordered:

10049 Carclo Lens - Elliptical Spot LED Optic

10003-L25 Carclo Lens - 20mm Elliptical Spot LED Optic

10003-25 Carclo Lens - 20mm Ripple Wide Spot LED Optic

10003-15 Carclo Lens - 20mm Ripple Medium Spot LED Optic

I've been waiting for a KD order with a "striped optic", but I'm beginning to wonder if I'll ever receive it! If so, that one will be added as well.

-Garry

I assume these optics will fit the real Gemini Duo ? Im ordering one this weekend and want the option to tighten up the beam or wider ( already have the Olympia though).

I think so, but I'm not positive. Certainly someone with one over at MTBR knows. They do fit my KD Duo clone light.

-Garry

Siata, I’ve found that a good mix for trail is either a multiple led or 25 degree single on the bars focused from 0-15’(0-5m)since I need to illuminate the trail right in front of the wheel and a 10 degree single or multiple 6 degree that spreads to about 8-10’(3m) at 30’(10m) on the helmet for looking ahead/around corners. Too much spread and details like rocks and ruts get lost and not enough spread can make you miss the optimum line. I want enough overall output that even at full tilt boogie I can see far enough ahead to get on a good line. I like to look ahead and let my back brain take care of “remembered” details rather than stare just in front of the wheels. When going slowly the low power spread of the bar light is enough to pick my way uphill.

Garry
Did you use the cutom optics on both sides or did you do cutom/stock ?
Also did the 60 degree kill the throw way to much ?

I haven't done anything with the optics in my KD Duo clone as I've been tied up trying to mod the driver for more output. I did like the stock optics which provided a wide throwing beam. I'll get pics up once the light is complete (but that will likely be a long while).

-Garry