Is the hub a SON Delux or a SON28? I ask because the Delux was technically developed for 20" wheel bikes, with higher rotation rates. While it works fine built into a larger diameter wheel (and will introduce less pedalling resitance and will weigh slightly less than the SON28,) it will produce less wattage as the the wheel diameter grows. So a 700c wheel with a fattish tire will make fewer rotations per foot than an ideal 20" wheel, therefore producing less watts. Add a tail light to the equation and the hub will be hard-pressed to bring the headlight to full brightness.
The SON28, on the other hand, is recommended for larger diameter wheels and situations involving additional lighting, i.e. a tail light, and device charging via USB. Probably not exactly what you want to hear, if you do have the SON Delux, but it could go a long way toward explaining your frustrating lack of light. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/bdd594f4-03bc-4114-ad98-705f43534531n%40googlegroups.com.
