Originally Posted by
mechBgon
Another problem to take into account: when you stop, the light goes on its standlight and runs even dimmer. That's not good when you're in the middle of a hectic 4-lane arterial intersection, waiting to make a left turn. My Supernova had an exceptionally feeble standlight, the Cyo is better, but this is another area where battery lights can save your bacon.
Another good point. The Supernova standlight is pathetic and I'm not crazy about the Edelux's either. The taillight is significantly better, perhaps because of the way red light is perceived or the efficiency of the LEDs? Having been experimenting with standlight designs, it seems to me the reason standlights are so dim is that the super capacitors that run them are expensive and big. In order for a small/cheap supercap to power a standlight for a reasonable amount of time, the current has to be kept low. My DIY standlight is very bright, but it uses an $8 supercapacitor that wouldn't fit in an Edelux or any of the B&M headlamps.