Cycle dynamos

[Rupert]

I ve got this spiffing idea for a sculpture: a bike with paddles fixed to its pedals underneath one of the dark bridges/tunnels running under Truro lit by a dynamo linked to its back wheel.

I've sussed out the paddle bit but I cant get any of the three dynamos that I've got working...which is driving me nuts.

Any suggestions would be most welcome.

[Swiftie]

I really like this idea... I don't understand why more night lights can't be powered by rivers etc.

Would this be something that you'd install and leave there? - that would be good.

Maybe the Leats in Truro? - I'm sure I remember a tunnel there.

Maybe you need to buy a new dynamo?

[Dom]

a good place to start would be the non-ferros scrap yard in st day - you might strike it lucky! or asking in bike shops.
is the dynamo be powering the light essential to the work or would a dynamo controlling the the brightness of the light (and slightly cheating) do.
if you get my number from paul chaney i can help you out

[Dom]

I've been playing with a 12dc motor with a 40:1 gear head which when atatched to my drill gave a maximum output of +5v dc - thats the best dynamo i've found for small aplications

[admin]

Attached to an electric drill? That must ve been going like the clappers!! I guess you mean hand-drill...

Lizzie Masterton got a lot of power out of a souped up motor/dynamo for her 'There will always be an England'...

[Daniel Miles]

what about car alternators connected to a battery, you would get a steady rate of power supplied by the battery and as long as you set up the paddles correctly with the right sort of gear ratio

[Dom]

Attached to an electric drill? That must ve been going like the clappers!! I guess you mean hand-drill...

Lizzie Masterton got a lot of power out of a souped up motor/dynamo for her 'There will always be an England'...

no - a little makita cordless - not hugely fast  - i don't know the rpm