Dynamo hubs

Yup, I'm having the same thoughts, two front lights mounted as wide apart as poss on front rack, looks nicer imo and makes it easier for folk to judge your speed /distance than with one light

70% efficiency is incredible. Looks really nice too. I would seriously have considered that if I had a braking surface.

Don't think you need braking surface, seriously considered getting one.

Look like you and I are in luck;

Dynamo Version Sport front fork mounting with dis brakes without roadbike rim-brakes, the right side is always free of break-cable holders

Not really.

The imbecile who wrote that can't spell "brake" or "disc", and Velogical's own website states that there are only two requirements:

1. A rim with a braking surface.
   
2. Over-voltage protection built into the lamp.
   
   

Just because someone puts it on an un-machined rim, it doesn't mean it will always function well in that scenario. It is fairly obvious that when the rim gets wet the small band on the dyno isn't going to be able to provide the grip to hold contact through the water without it requiring far more force to hold the dyno against the rim.

At least that person managed to do #2.

Spa cycles of Harrogate are now running a special offer of dynamo built into wheel + front and rear lights + wiring loom starting at £180

http://www.spacycles.co.uk/products.php?plid=m2b0s209p3040

Does anyone have any bright ideas (no pun intended) on how to mount a dyanmo light without the front hole in the fork. I was thinking of using a p clip on the headtube.

cheers

No chance you can drill the fork?

How about using a headset spacer front brake cable hanger? A bit of moderate bodging would be required though.

One of these: http://www.ukbikestore.co.uk/product/384/1274at/kinesis-uk--tektro-front-cable-hanger.html

cheers let me see if that works.
Me and power tools just dont go together. I am likely to do more damage than good

because someone puts it on an un-machined rim, it doesn't mean it will always function well in that scenario. It is fairly obvious that when the rim gets wet the small band on the dyno isn't going to be able to provide the grip to hold contact through the water without it requiring far more force to hold the dyno against the rim.

1. Neither rim brakes nor the dynamo demand a "machined rim" but a rim with, more or less, a braking surface, viz. more or less parallel rim walls. The surface on machined rims wears down anyway rather quickly. Classical bad weather rims such as the Ambrosio Nemesis don't have machined sidewalls. There is nothing about the design of the dynamo that I see could require machining--- if so it would quickly start to fail as the rim surface starts to wear down.
   
2. The rim wall does not even need to be very deep--- less demands that most "modern" shoes.
   
3. Water? A machined surface is not more immune to water films.
   
4. Apparently a large number of people are using the dynamo for long distance touring. According to the maker "It works slip-free and with unobtrusive reliability even in the wet". I see no reason not to believe that claim.
   
5. I can see some problems in extreme cold, snow, mud etc. but that is where the accumulator based solutions come to bloom: lights are powered by a battery that is charged by the dynamo.
   
   

Does anyone have any bright ideas (no pun intended) on how to mount a dyanmo light without the front hole in the fork.

Lights don't need front holes in forks.. Loads mount on handlebars... example Supernova http://supernova-lights.com/en/technology/mounting.html

That first thing may work, will take a look thanks

Neither rim brakes nor the dynamo demand a "machined rim" but a rim with, more or less, a braking surface

My tourer uses disc brakes and all mountain carbon rims that have no braking surface or machined rim, no aluminium around the edge, and were designed for disc brakes and the walls are explicitly thin carbon and not designed for any rubbing or braking action.

Velogical put their limitation there for a good reason, and Enve Composites put similar limitations on their product for a good reason. I'll listening to those above all else.

Yep, my B&M Cyo is mounted on my handlebars - a very easy bodge with some old Cateye lamp brackets. I do wonder if it's a bit hidden from some angles by the brake levers.

That spa cycles deal is really good I make rrp on the parts alone £186, without taking into account wheel build, spokes, nipples etc
Think I am going to pull the trigger on that, cheers!

Apologies if a repost, but has anyone had any experience of Magnic lights? Contactless dynamos that look like a neat lighting set-up. Having had a look today, I quite fancy them for commuting. I don't think they would light a dark country lane for night riding, but for most other stuff, they could be a good, if rather pricey, choice.

http://www.magniclight.com/MagnicLight/index.php/en/

@salman are those ^ the lights you backed?

First ride in the dark this morning, cant believe how good the lights are, so bright..

Heres a picture, just the standing lights are on.

1 Attachment

has anyone had any experience of Magnic lights

I saw the guy last year and played with the lights.. Works great "to be seen" but less so to "see". Nice idea--- no need for magnets--- but the price point is too high especially given the "eddy" alternatives such as the Reelight--- and there are a number of even cheaper Far Eastern knock-offs to be had as well. No magnets but needs alu rims... The best use I see of the Magnic is as a rear light in combination with a battery LED unit up front on an old-school "racer"...

What are the good dynamo hub options beyond SON? Needs to be good enough to charge a small battery pack and power lights, not at same time.

Thru axel. Centre lock. 18-20 hole.

SP do a thru axle not sure if they go as low as 20 hole though. I have two and they're great running revo front and red eye rear lights

Also not centre lock either, not sure I've been much help come to think about it.....

SP Dynamo?

bit slow, they do centre lock and thru axles, but no less than 32h.

SP 20h is quick release not 15mm thru.

Keep searching, maybe something new will come.