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Old 05-29-03, 08:24 PM   #1
Inoplanetyanin
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Anyone used lights powered by dynamo?

I would like to know if anyone used those, and if yes, how durable are they? I only see one store that sells them, so far. It's a target. For 10$ they have a kit with front and rear light with fork mounting dynamo.

I don't even want to consider batteries, unless on the lights that use light diodes.


Dynamo

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Old 05-29-03, 08:53 PM   #2
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You get what you pay for. I would look into Schmidt Dynamo front hub: http://www.peterwhitecycles.com/Schmidt-Lumotec.asp
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Old 05-29-03, 08:59 PM   #3
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My ex bought me a Schmidt Dynamo hub from Peter for x-mass year before last,
It is a sweet hub for lighting. I also use it to charge batterys for the cd player...
There are a few good bottle dynos on the market, but for $10 at Wally-World. this is not one of them.
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Old 05-29-03, 09:08 PM   #4
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Hahaha, there starts a price/quality debate again...
Maybe I should remove the price from the first post.
Exact same kit costs 20 bucks at a smaller store...
It's not only the quality that makes up the price...
I wondered if anyone actually used one and if yes, how did it hold up and did it affect the riding noticeably?
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Old 05-29-03, 09:18 PM   #5
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Quote:
Originally posted by Inoplanetyanin
Hahaha, there starts a price/quality debate again...
Maybe I should remove the price from the first post.
Exact same kit costs 20 bucks at a smaller store...
It's not only the quality that makes up the price...
I wondered if anyone actually used one and if yes, how did it hold up and did it affect the riding noticeably?
we had a bike with dynamos in the past... those dynamos are rather heavy...

And seem to move a lot on bumpy rides...

After discovering Cateye(headlamps), it was never used again.
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Old 05-29-03, 09:33 PM   #6
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What's so special about this Cateye headlamps?
What are they powered by and how long does the source last without recharging/replacing the battery.
If it uses batteries, what kind...
Batteries cost a lot, don't last long and heavy to carry
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Old 05-29-03, 09:38 PM   #7
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Ok, here they are.



Uses AA batteries, where 4 of them last 30 hours, meaning in two nights of driving I will have to worry about getting new batteries, which cost 5$ at a gas station... meaning in about 5 times (price of the headlamp is ~ $25), batteries will match the price of the unit itself, while dynamo should last for months... Supposely.

Cateye doesn't seem to be practical for me.
Any other ideas/ information?
_____
Thanks for answering, anyway.
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Old 05-29-03, 09:38 PM   #8
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where did you get your quote from?

i don't consider myself neither foolish nor wise... but i do like to learn AND teach. I like to learn from those wiser than myself..... and I like to help people learn with what wisdom I do have.....

I don't think it's as cut and dried as your quote would like to say...
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Old 05-29-03, 09:42 PM   #9
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Go solar...
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Old 05-29-03, 09:43 PM   #10
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Quote:
Originally posted by deliriou5
where did you get your quote from?



I don't think it's as cut and dried as your quote would like to say...
"True knowledge" Knowing nothing...
It's only words. Everything can be criticized and as a general rule of phylosophy: To every statement, there is contr statement.
Or , to every rule, there is an exception, meaning there is no ABSOLUTE truth...

If you would like to continue on this, that could be fun...

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Old 05-29-03, 09:44 PM   #11
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I had friends that prepared solar cells to recharge their batteries, but they never had a chance to use them. I don't know why... cloudy, vibration, low efficiency...
I don't like the idea of depending on a battery in general...
except, maybe, ion lithium kind...
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Old 05-29-03, 09:52 PM   #12
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Quote:
Originally posted by Inoplanetyanin
Ok, here they are.



Uses AA batteries, where 4 of them last 30 hours, meaning in two nights of driving I will have to worry about getting new batteries, which cost 5$ at a gas station... meaning in about 5 times (price of the headlamp is ~ $25), batteries will match the price of the unit itself, while dynamo should last for months... Supposely.

Cateye doesn't seem to be practical for me.
Any other ideas/ information?
_____
Thanks for answering, anyway.
It won't be pratical if you buy new batteries every 2 nights..

I get NiMh Rechargable Batteries.. These have a 1800maH rating each, they will last longer than those Alkaline Batteries.. You don't even need to drain it to recharge. I have a fast charger, I can charge these to full capacity in 2.5hrs. (By the way, these are lighter than the alkaline batteries). If you really need to be light, there are rechargable Lithuim Batteries with the same rating, but they cost 20-50% more.

You can charge these more than a hundred times. So you will be assured you have reliable batteries for months..
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Old 05-29-03, 09:54 PM   #13
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Well, it might have worked well in the city, but where I plan on riding, it will be difficult to recharge them...
Canadian Wilderness...
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Old 05-29-03, 10:00 PM   #14
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Quote:
Originally posted by Inoplanetyanin
Well, it might have worked well in the city, but where I plan on riding, it will be difficult to recharge them...
Canadian Wilderness...
Oh, I thought it was for the commute.. my mistake..
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Old 05-29-03, 10:05 PM   #15
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Another question is, how tough is this dynamo on the tire.
Could it tear the tire to the treads relatively soon??...
How bright are the lights. They probably wouldnt be bright enough to lighten the road up ahead, so, at least to mark a bicycle in the dark for other drivers to see.

Rear is not a problem, any flasher with light emited diods is bright enough and lasts for weeks... Used them before...
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Old 05-29-03, 10:22 PM   #16
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Quote:
Originally posted by deliriou5
where did you get your quote from?
Oh, sorry, I didn't answer your question directly.
I took the quote from my head, so it's hard to say exactly who it belongs too. Just something you remember from the childhood, you know?...
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Old 05-29-03, 10:38 PM   #17
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Quote:
Originally posted by Inoplanetyanin
Another question is, how tough is this dynamo on the tire.
Could it tear the tire to the treads relatively soon??...
How bright are the lights. They probably wouldnt be bright enough to lighten the road up ahead, so, at least to mark a bicycle in the dark for other drivers to see.

Rear is not a problem, any flasher with light emited diods is bright enough and lasts for weeks... Used them before...
I had a dynamo once. Didnít have any complaints except for the weight factor. It doesnít do any damage to the tire as long as you have a tire with special section (donít know what itís called, sorry) for dynamo head on itís side wall. Another thing I donít like about dynamos is that the light is never steady in its brightness (at least my wasnít). If you stop pedaling or pedal at a slower paste, the light dims. That means that if you want to see the road in front of you better keep your paste up. I say go with battery power, if you can.
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Old 05-29-03, 10:40 PM   #18
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For only $10 why not pick it up and try it out.. worst case scenario you are out $10 if you can't return it.. The 30 hours is about longest you will get out of any light realicaly that runs off batteries. And you are you planning on ridign all day and night? I would estimate 6 hours of night riding would easily take you to midnight so that would be 5 days. The dynamo hubs are definately the best way to go, but they are fairly expensive, but really don't have much drag anymore. I did have one of those quite a few years ago.. I did not notice the drag much, but the amount of light was pretty pathetic, but like I said for $10 what do you have to lose, just skip lunch two days and you have the $10
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Old 05-29-03, 10:42 PM   #19
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Side wall
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Old 05-29-03, 10:43 PM   #20
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..,
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Old 05-29-03, 10:43 PM   #21
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Found a write up on different dynamo lights, you might find it interesting reading.
http://www.myra-simon.com/bike/dynotest.html
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Old 05-29-03, 10:51 PM   #22
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Quote:
Originally posted by Kev
but like I said for $10 what do you have to lose,
Well, he also can loose his way at 3 am. in the middle of nowhere.
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Old 05-29-03, 11:12 PM   #23
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Well could use to test it out.. see how well it actualy performs.. failure rate it's hard to say without long time usage that is true.
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Old 05-29-03, 11:58 PM   #24
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Here is another article about Dynamo's and reviewing them etc...
http://www.audax.uk.net/lights/dyno.htm

Seems the drawbacks to the bottle type like the one you are looking at is, they do wear through the tire in time which can be very dangerous, they can slip if tire gets wet, create more drag and are noisy.
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Old 05-30-03, 02:34 AM   #25
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I have used several bottle dynamo systems. I have a cheapy Union one with a standard clamp on one of my town beater bikes. The light is adaquate for riding in town, and the generator works OK, but the system is let down by the seat-stay clamp. This rotates too easily, even when done up tightly, so you can never get enough pressure on the tyre. The metal roller causes some tyre wear, but nothing catastrophic.
My touring bike has a better quality Swiss-made Nordlight (£20), with a rubber roller. The roller engages with radial grooves on the tyre-wall (continental top touring), to give good grip. The biggest difference is that the generator is bolted onto a braze-on mount. There is no rotation or flex in the mount, so all the pressure of the spring is directed at the tyre. It is powerful, reliable, efficient, and bright. I have used it on pitch black rural lanes, up steep hills, and people are amazed how bright the system is compared to their puny 4xAA lamps, even at low speed.
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