Dynamo Vs. normal lights on a 20" folder
I'm dropping my bike in for service next week and comtemplating a few small upgrades. One is a dynamo lighting set for my Downtube VIII H. I'm thinking of the more expensive front hub dynamo with standing lights vs a rear tyre driven one also with standing lights. What do people think of these options against each other and also compared to using normal battery lights?
Many thanks in advance. |
http://bp2.blogger.com/_vUEhS0lU3eU/...0/d+lite+1.JPG
I have a Shimano dynohub built up in a 406 wheel and I used to own a more expensive SON dynohub in a 26" wheel. I also own a couple Dinotte 200L-AA battery lights. Which do I prefer? Well if you only have one bike or all your bikes use the same front wheel the dynohub is nice because you always have light - no worrying about charging batteries. If you have more than one bike and they have different sized wheels I'd get something like a Dinotte light. They mount on a bike in seconds and can be removed fast when not needed. If I was going to bike commute all winter in Canada my ideal setup would be a dynohub with a light mounted on my bike & a battery powered light on my helmet I could point where I wanted to see and get motorist's attention. Here is my Tikit light setup: http://bp3.blogger.com/_vUEhS0lU3eU/...0/d+lite+2.JPG |
I also have a mix of generator and battery based lighting sources. However I disagree with Vik's conclusion. My battery light is a Niterider MiNewt which is very similar to the DiNotte 200L that Vik is using.
The generator system is preferable to me for it's reliability and simplicity. It is always there, I don't need to think about recharging it or moving it between bikes. My folding bike is an urban bike and thus should have always ready lights. The new Lumotec IQ Fly headlight is brighter and has a more useful beam pattern than the DiNotte and MiNewt headlights. I'm in the process of building up a generator wheel for my Tikit. The Dahon generator hub isn't very expensive. alex |
Another possible option if you merely want to be seen is the http://www.reelight.com/
I have a set on my 20” wheel folder and they work great. I also have a battery set of lights to illuminate the road when needed. They charge and flash as the bike is in motion and the version I have continues to flash for a few minutes while stopped at junctions etc. Paul . |
If you have the chance to upgrade to a dyno hub do it! I have run all manner of lights over the years and a generator hub to me is the absolute best way to go period. If you need more light than the hub can crank out you can always add battery lights, but still have the dyno if the the batteries die. There is nothing wrong with a sidewall generator, but when you need the lights the worst, on a dark wet night is when it is at it's worst, slipping and giving weak lighting.
Aaron:) |
Originally Posted by mulleady
(Post 6164034)
I'm dropping my bike in for service next week and comtemplating a few small upgrades. One is a dynamo lighting set for my Downtube VIII H. I'm thinking of the more expensive front hub dynamo with standing lights vs a rear tyre driven one also with standing lights. What do people think of these options against each other and also compared to using normal battery lights?
Many thanks in advance. Regarding the front dynamo hub, my understanding is that only certain models are designed for small wheels. You might want to double check before purchasing one. -G |
Large wheel dynohubs will work on small wheels, they just have greater resistance. I built a 20" wheel around a Shimano NX-30 (one of their earlier dynohub models) and used it for touring without problems. That wheel has had many more miles on a friends Raleigh 20.
If you don't mind a nutted axle then the Dahon Joule is worth considering. I'm being quoted $65 for the hub alone, $95 for a full front wheel (20"/406mm). alex |
Originally Posted by awetmore
(Post 6165287)
Large wheel dynohubs will work on small wheels, they just have greater resistance. ...
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Originally Posted by awetmore
(Post 6164487)
I also have a mix of generator and battery based lighting sources. However I disagree with Vik's conclusion. My battery light is a Niterider MiNewt which is very similar to the DiNotte 200L that Vik is using.
The generator system is preferable to me for it's reliability and simplicity. It is always there, I don't need to think about recharging it or moving it between bikes. My folding bike is an urban bike and thus should have always ready lights. The new Lumotec IQ Fly headlight is brighter and has a more useful beam pattern than the DiNotte and MiNewt headlights. I'm in the process of building up a generator wheel for my Tikit. The Dahon generator hub isn't very expensive. alex
Originally Posted by vik
(Post 6164314)
Which do I prefer? Well if you only have one bike or all your bikes use the same front wheel the dynohub is nice because you always have light - no worrying about charging batteries.
If I was going to bike commute all winter in Canada my ideal setup would be a dynohub with a light mounted on my bike & a battery powered light on my helmet I could point where I wanted to see and get motorist's attention. |
Originally Posted by invisiblehand
(Post 6165222)
I have been fine with a battery operated light. I keep a battery charger at work and at home. Cheap, simple and effective for the mostly lit trip back home.
Regarding the front dynamo hub, my understanding is that only certain models are designed for small wheels. You might want to double check before purchasing one. -G |
The LED lights that claim that they run for 30 hours are either doing it on a very low output or don't have good regulation. The LEDs without regulation are bright for a short period of time and quickly dim.
Using a generator headlight doesn't mean using halogens. The Lumotec IQ Fly headlight is a generator headlight that is LED based which is very bright (a reviewer did a side by side comparison and found it brighter than the Niterider 10W HID bulbs). The resistance is so low that there is no real reason to turn it off. They make a battery version of it too if that is your preference (it is one of the few battery powered LED headlights with a good beam pattern for road riding). No one would buy a car that requires you to recharge the headlights. I don't understand why we'd accept utility and commuter bikes (which is what most folders are) that don't have well integrated headlights. |
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Originally Posted by awetmore
(Post 6169253)
No one would buy a car that requires you to recharge the headlights. I don't understand why we'd accept utility and commuter bikes (which is what most folders are) that don't have well integrated headlights.
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Originally Posted by Mr. Smith
(Post 6172500)
On the contrary. I can't wait to buy a rechargable car!
http://news.bbc.co.uk/1/hi/sci/tech/7241909.stm http://www.youtube.com/watch?v=D-A3XHFT5qc http://www.youtube.com/watch?v=Dq8aZ...eature=related |
Originally Posted by EvilV
(Post 6175557)
Maybe one that is rechargeable with AIR would be the one to go for, but NOT this particular prototype model. It would have to be way better than this one, but the technology is getting there.
http://news.bbc.co.uk/1/hi/sci/tech/7241909.stm http://www.youtube.com/watch?v=D-A3XHFT5qc http://www.youtube.com/watch?v=Dq8aZ...eature=related |
Originally Posted by Mr. Smith
(Post 6177180)
Thanks! I have never seen a compressed air car before. Sounds like an ingenious idea, though the thing that seems attractive to the average American to electric cars is the high performance torque. This sounds better to me in that it seems to use less electricity and there's no heavy metals to contend with in landfills from spent high capacity batteries. Sounds like the parts in these vehicles would be highly recyclable.
Anyway - it isn't as if expansion engines were a new thing - just that the fluid used has changed. Comically enough, the version shown below had already reached its zenith by the start of the twentieth century and the whole concept was entirely dropped in favour of internal combustion engines by the end of the 1950s, but an air engine is simply an expansion engine like a compound steam engine where the pressure raising technology is external to the device using it. http://www.gwrarchive.org/images/pr2285.jpg |
Originally Posted by Mr. Smith
(Post 6177180)
Thanks! I have never seen a compressed air car before.
It was made by Tomy -- yes, the toy company -- and was called the "Air Jammer Road Rammer". http://www.virtualtoychest.com/aircar/aircar.html Mine looked much better than the one pictured above, with a clear tank, red chassis, and black bumpers & roll cage. Pump it up, set the steering, give it a push, and it spat off until the air ran out. Fun stuff. :D |
How about using the compressed air from the human fart to create an extra boost on our folders?................................
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Originally Posted by mulleady
(Post 6188164)
How about using the compressed air from the human fart to create an extra boost on our folders?................................
I don't even fart often enough to make that feasible. :D |
Try a chicken vindaloo and that could change if there was the enabling technology to channel the boost! :):eek:
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Originally Posted by mulleady
(Post 6188164)
How about using the compressed air from the human fart to create an extra boost on our folders?................................
This seems more practical, but barely: http://www.youtube.com/watch?v=5vp8EAHEnuY |
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