Im new here, and have some questions about some flashlights.
1 Does the fenixE01
Fenix E21
FenixTk75
And a 90 lumen simple cheap 99 meters beamdistance flashlight……Illuminate objects/things at,
40 meters?
100 meters?
600 meters? Or can they illuminate things at 800 meters distance?
And so yes, how bright will the illumination, at 40, 100, 600, and at 800 meters be like, with the fenix EO1, Fenix E21, Fenix TK75, and a cheap simple 90 lumen flashlight, that has a beamdistance stated at 99 meters?
Jeebus man… a TK75 for a bicycle light? The thing must weigh ~ 2 lbs with batts, and at that weight, he should consider installing another 1lbs pannier rack to hold it, particularly if on an unsuspended bike. Then, IMHO, the only reason to need that much light and throw on a bicycle would be if your friend can cuise at Tour de France paces (ie, Alps downhill ~ 50+ mph) on 16lbs bicycles… but with ~ 3 lbs of lighting equipment?
A vehicle HID puts out ~3000 lumens from a single light, but is probably more tuned for flood than the throw of the TK.
I personally bike in the country with no street lights, and after my eyes are somewhat dark-adapted, I find ~25 lumens fine for flat (10-15 mph) and uphill sections and ~100 good for rolling downhills (ie, not pedaling in topgear - just gravity topping you out around 25-30mph). But then again, I’m a low lumen fan that hates charging and changing batts all the time.
It’s all about the beam pattern with bike lights! Off road you can ignore that a bit more but on the road you’ll be killed running a TK75 on turbo. I personally use two budget MagicShine clones, with two battery packs, two chargers and a dedicated wide angle lens I’m in it for way less than half a TK75 without batteries or charger (less than £50 all up).
As for the lumen comments, I ride pitch black trails and parks. What 100m of throw gives you is time to react and plan your line. Even at 15mph I find low output annoying but then I don’t have good night vision.
- easy user interface, so most likely a single mode
save powersource because several people will use it without any further instructions
2. Depends on the situation the SAR personal is working in, on the water, in the mountains, in the woods in urban areas ?
3. I say NO, please read #1 again.
4. Could be useful in some situations.
The question is, will the fenix still work when it’s dropped on concrete or against hard materials like walls?
Is it to heavy?
I think SAR people arrive by car or other vehicles, so they can transport a ton of usefull stuff, but they’ll grab the stuff they need and walk towards a designated point.
Remember they might carry things like first aid kit, shovels and a rope if they needs these items in a situation, plus the usual heavy duty clothing like boots and jackets, so the TK75 might be a little bit too heavy.
Notice I got no idea about SAR work, this points above are written using my common sense, this works in most cases.