2 STROKE DIRT BIKE ENGINES

Fenix E21 Flashlight

The E21 is a two stage light made with simple operation in mind. By the easy twist of the head, the owner can go from a long runtime 48 lumen beam to a long reaching 150 lumen beam. Add the fact that it runs off of affordable and easy to find AA batteries and this could be the perfect light for all adventures, where ever you may be. Product Features: * Cree XP-E LED with lifespan 50,000 hrs * Uses two 2 AA (Alkaline, Ni-MH) batteries * Max Brightness: 150 lumens * Low Bright: 48 lumens * 6.5" (Length) x 1" (Diameter) * Weight: 3oz * Output: 2 types * Patented physical structure avoid circuit damaging from reverse connection of battery * Tactical push-button tail cap switch * Toughened ultra-clear double glass lens with anti-reflective coating * Waterproof to IPX-8 Standard

Easy to use and compact, the Fenix E21 portable flashlight makes a perfect companion for your outdoor adventures, whether you're touring, hiking, camping, or mountaineering.

The E21 flashlight features a hard-anodized anti-abrasive finish.
The E21 is equipped with a Cree XP-E LED bulb with a lifespan of 50,000 hours. The bulb's digitally regulated beam maintains a constant brightness during your activity, so you won't have to deal with a dimming beam while you hike. You can also choose different output levels depending on how much light you need. The low output level (48 lumens) runs for up to 11 hours on two AA batteries, while the high level (150 lumens) runs for up to 2 hours 15 minutes. Best of all, the high-brightness LED includes a high-efficiency reflector that creates an ideal balance between the flood beam and the focus beam. As a result, users get the best of both worlds.
The flashlight is also well built, with a durable aircraft-grade aluminum body coated with a premium Type III hard-anodized, anti-abrasive finish. The construction--which includes a toughened ultra-clear double glass lens with an anti-reflective coating--helps the light hold up to all kinds of abuse. Other features include a tactical pushbutton tail-cap switch; rhombic knurling to improve the grip; and such accessories as a lanyard, a spare rubber switch boot, and two spare O-rings. The E05, which is waterproof to the IPX-8 standard, carries a limited lifetime warranty.
Specifications:

Bulb: XP-E LED
Bulb lifespan: 50,000 hours
Output: Low (48 lumens), high (150 lumens)
Runtime: 11 hours (low), 2 hours 15 minutes (high)
Distance: 439 feet
Waterproof: Yes, to IPX-8 standard
Construction material: Aircraft-grade aluminum
Finish: Type III hard-anodized anti-abrasive finish
Lens: Toughened ultra-clear double-glass lens with anti-reflective coating
Accessories: Lanyard, two spare O-rings, spare rubber switch boot
Batteries: Two 1.5-volt AAs (NiMH, alkaline)
Dimensions: 1 inch in diameter, 6.45 inches long
Weight: 3.17 ounces (not including batteries)
Warranty: Limited lifetime

First test of the LED tail-light wired up and connected to the electric cycle's 36V system. The two 2.7k ohm resistors are clearly visible. The red and black wires go all the way to the front of the bike and connect up to the headlight circuit.

I have made a few of these now. Turned on my manual lathe out of solid aluminum stock. Powered by Schmidt SON 20R Dyno hub; electronics are from Lumotec Seculite Plus. Modern LED light with standlight function.