I have a B&M Dymotec on my retro-isn random bike. Works great, and if you get it adjusted right, very little noise. I have mine running a B&M LED headlight and a B&M 4-LED taillight, and both work perfectly. I’ve done several double centuries with this setup (including nighttime finishes involving hours of riding with the lights on) with no ill effects to either me or the tires.
There are trade-offs with bottle generators that have been well-documented elsewhere, so I won’t get into that. For me, this was a great way to get rando lighting on a bike that I didn’t want to have to buy a new generator-hub front wheel for. —Eric N campyonly...@me.com www.campyonly.com www.wheelsnorth.org Blog: http://campyonlyguy.blogspot.com Twitter: @campyonlyguy > On Jan 1, 2015, at 2:02 PM, Andrew Marchant-Shapiro > <marchantshap...@gmail.com> wrote: > > Here's my take on the B&M (Dymotec) unit: > > http://lawschoolissoover.wordpress.com/2014/08/09/the-shocking-truth-part-5-bottle-generators/ > > If you want to read the whole series (heh) start here: > > http://lawschoolissoover.wordpress.com/2014/07/20/the-shocking-truth/ > > > On Thursday, January 1, 2015 1:57:50 PM UTC-5, Mike Shaljian wrote: > Oh, I didn't realize the B&M was a good, functional little bottle dynamo. It > makes sense now that the light would be underpowered, since the Velogical > puts out 1.5W and the headlight takes 2.3. I think I may start with just > using something like a Cygolite Trion 1300 on the Jones and then if I want > dynamo power, I could run an E-Werk as the battery charger for that. I'd like > to have a bonafide daytime running light, but it seems like the best strategy > with a bottle dynamo would be to just go for recharging a battery pack. $60 > as opposed to $160 is certainly attractive though! > > On Thursday, January 1, 2015 7:08:42 AM UTC-8, Andrew Marchant-Shapiro wrote: > I have seen LED lights sec'd as low as 1 W, and it may be that the new StVZO > standard anticipates these. Shimano, FWIW, also manufactures dynohubs that > put out power in the 1.5W range. I did have the impression that the Edelux > (I used an Edelux and Pixeo as a test bed) was slightly underpowered by the > Velogical. > > I don't know whether you'd need a brake track to run this; the O-ring is > pretty grippy. The nice thing about the brake track is that if it get super > wet, you can clear it with a touch of the brakes. Again, just in case it > needs to be repeated, this is designed to run on the RIM, not the TIRE. But > the B&M dynamo can also run on the rim. > > It's a very light, elegant solution. But it's very costly, and I think that > the B&M dynamo (for example) would likely do a fine job in its place. > > As for powering something like a USB charger in addition to a headlight, it > can do that. I didn't test it for great periods of time, but my phone (a > Lumia) did show that it was charging. > > If anyone has any questions they want addressed on the Velogical, I'll try to > answer them from my experience. > > On Wednesday, December 31, 2014 6:42:57 PM UTC-5, Mike Shaljian wrote: > I was talking with Jeff Jones about lighting options with his 29+ bikes > (which can't run a disk SON hub because of 142mm spacing) and he said that > one of his customers had good results with this fancy model: > http://www.velogical-engineering.com/rim-dynamo-en > <http://www.velogical-engineering.com/rim-dynamo-en> > > I'm considering it for the 29+ I want to build, I could power a headlight > alone up front and also a B&M E-werk for charging batteries. Seems like a > good solution to the one drawback of the 29+ model (no dynohub). I'm also > wondering if some battery-powered lights (Cygolite, Light & Motion) have > advanced to the point of being tolerable to use now in terms of reliability. > > -- > 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 > <mailto:rbw-owners-bunch+unsubscr...@googlegroups.com>. > To post to this group, send email to rbw-owners-bunch@googlegroups.com > <mailto:rbw-owners-bunch@googlegroups.com>. > Visit this group at http://groups.google.com/group/rbw-owners-bunch > <http://groups.google.com/group/rbw-owners-bunch>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- 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 post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
