CityCyclingEdinburgh Forum » Questions/Support/Help

Bracket for bottle dynamo

(3 posts)
  • Started 11 years ago by sallyhinch
  • Latest reply from sallyhinch
  • This topic is not resolved

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  1. sallyhinch
    Member

    The (€1.29) bracket that was attaching my Nordlicht bottle dynamo to my front fork has just snapped off after 18 months of being rattled over potholes and rough roads. It looks like there are basically 2 dynamo brackets on the market, the one made out of cheese that I just broke, and this solid aluminium B&M one http://www.sjscycles.co.uk/busch-and-muller-high-quality-aluminum-stay-fitting-bracket-prod11215/

    I don't mind paying a few extra quid if it means I don't have to replace the bracket every year - but I can't work out if the B&M one will work for a front wheel as most of the places that sell it seem to imply it's for a rear dynamo only.

    Can someone explain to the mechanically declined what the difference is and what I'd have to check before ordering to be sure it would fit my bike? I think I could put the dynamo on the rear wheel but with the rack and the mudguards and everything it's a bit crowded on the back wheel and it's nice having the dynamo up front where it's easy to reach and there's less cabling to deal with.

    Posted 11 years ago #

  2. wee folding bike
    Member

    My guess would be that it fits seat stays which have a smaller diameter than forks. You don't want one on the front which isn't a good fit as it might hit the spokes.

    B&M make good quality kit.

    Some generator brackets are handed but that looks like if could fit either side. Theoretically you should have the generator behind the mounting so that the wheel rotation pushes the roller onto the tyre rather than away from it.Not sure it makes much difference. On the front wheel having the generator to the front of the mounting might be safer.

    You might want to consider using a hub generator. They are quieter, silent in fact, don't wear the side of your tyres and don't slip in the rain.They are a bit more spendy but after I had worn out lots of bottle generators after a few months each I decided to go for hubs.

    Posted 11 years ago #

  3. sallyhinch
    Member

    Thanks for this. As it happens, I emailed David Hembrow at Dutch Bike Bits (who supplied it) and he's sending me a replacement plus one for the rear as well. Excellent customer service for a part which originally cost €1.29!

    I have considered a hub dynamo but I use the lights so little as I don't commute that I went for the bottle option as the compromise solution. Perhaps when I wear out the dynamo I'll switch to a hub - I did get a light that would work with either

    Posted 11 years ago #

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