and my new HG50-8 13-26 cassette arrived today ($11 on amazon!!), brought my back wheel down to my favorite LBS where they nicked me $5 to slap it onto the wheel on the spot (no complaints). took it for a brief spin, a mile or so down a side street and back. YES! my thoughts of a 2x9 or 10 upgrade are receeding. I do believe this will do the trick for quite some time with the crankset I have, my low is now a 28:26 which is plenty low enough, and my high is a 48:13 which is taller than I'm gonna be pulling on a flatbar bike any time soon. most important, ALL the gear steps are much closer. color me
hey, for laughs, I ordered one of these on fleabay... direct from China.
I looked up the tech specs on a Cree XM-L T6 bin... its not 1800 lumens except maybe down hill with a tail wind, but it IS capable of over 1000 lumens. thats about as much total light as a automobile halogen 9004 high beam. this should be fun. if the supplied li-ion pack is the 6400mAH 8.4V they claim, thats 54 watt-hours, which should keep it burning for 5+ hours on way-too-bright, and much longer on 'plenty-bright'.
I'll report back when I've got it and had some time to play with it. bonus, it has a headlight strap in addition to a handlebar clamp.