Questions tagged [dynamo]
A dynamo converts mechanical energy to electrical energy.
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Why are battery-powered lights so popular?
Both on this site and "in real life", battery-powered lights appear to be at least as popular as generator-powered lights.
I have always been slightly confused by this. To me, a generator-powered ...
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What applications exist for bicycle power, besides propulsion? [closed]
The dynamo light uses the power of a bicycle and rider to generate light. Are there other such inventions, intended either as accessories to the bicycle, or intended to be powered by bicycle mechanics ...
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Is there a benefit to turning off dynamo-powered lights?
I have a bicycle with lights and a hub Dynamo. I am looking for generic answers that apply to more setups but if that's not possible, the bicycle I have is a Stevens Randonneur 2021.
My bicycle lights ...
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Consequences of driving a dynamo backwards
My bike has a hub dynamo in the front wheel. Recently I have replaced the old fork with a used one I got from my local bike club. The new one has fixing points for the cabling on the other side of the ...
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Bottle dynamo vs. hub dynamo
I have SpinPOWER USB charger kit, and I am using a bottle dynamo with it. I have heard that the power output from a hub dynamo is higher than from a bottle dynamo. Does anyone have any information ...
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Using hub-dynamo for both lights and charging, with priority on lighting
I currently have a Supernova E3 Pro powered by a Shimano hub generator, and I would like to add the ability to charge USB-powered gadgets. My main concern, however, is that simply wiring up a charger ...
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Just how bad are bottle dynamos?
My tourer has a dynamo front wheel, which is great. It's so handy* that I ended up using it for most of my commuting over the winter, despite having a hybrid that should serve as my foul-weather ...
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What kind of maintenance does a shimano dynamo hub need?
I have a shimano dynamo hub on the front of my bike.
Does it need any special maintenance, or maybe it needs just a little synthetic grease once a year, like a normal front hub?
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Does anyone make a dynamo light buffer battery that will keep it going at full power?
I have a nice SP dynamo hub and an old Supernova E3 Triple dyanamo light. However, the dynamo light isn't very bright when I'm starting my ride, as my ride has a long hill at the very start, so I don'...
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Are there any high power bicycle generators?
I have been searching for a generator or 'dynamo' (preferably one built into the hub) to run lights for night riding, but it seems that most are rated for only about 3W (presumably to meet German ...
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Dynamo hub lighting system recommendation
I'm considering outfitting my hybrid/commuter bike with a front dynamo hub and associated lighting.
Currently, looking at Sanyo, Shimano, and Schmidt dynamo hubs. The Schmidt's are pretty pricey, ...
user313
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Can I safely drill a hole from the crown into the steerer in my carbon fork?
I want to install dynamo-powered USB charging apparatus inside my fork steerer. However, it's a carbon fork that has no exit at the crown for the dynamo wiring.
Is it safe to drill a small hole (at ...
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Output of a Hub Dynamo measured with an Oscilloscope
What signal do you get from a hub dynamo when measuring it's output with an oscilloscope. Please include information on load and setup.
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Advice on hub-driven rear lights
I've had my Cube Travel Pro for a few years now, and it's been well used in all sorts of weather (it's my commuter so it's covered in road gunk). It has hub-powered front and rear lights which has ...
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Flashing light when pushing bike with (constant) low speed
When someone pushes his bike beside him in a constant (low) speed the light will not be at constant (low) brightness, instead it will flash with it's full brightness.
Why does it work like that?
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Are there Dynamo powered, rear flashing lights? [closed]
I run a SON hub dynamo and have recently upgraded my front light (the old light and the dynamo are ~10 years old). The new one is much brighter than the old and has a USB outlet for charging stuff, so ...
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How do you install a hub dynamo?
I want to buy a Shimano hub dynamo, but I'm encountering problems getting a bike shop to commit to installing it for me if I buy it. So I have a couple questions that I'm hoping some of you guys might ...
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DIY system for charging battery packs from hub dynamo
recently I stumbled over an interesting feature of a bike.
The gravel bike from Decathlon has an inbuilt USB hub where you can charge your battery packs while riding. Now I wonder if there is a way to ...
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Dynamo hub lights flickering: should I be concerned?
I've gotten some new lights for my bicycle this Christmas and just bought a matching dynamo hub wheel for them.
I've removed my old wheel and put the new wheel in the fork and attached the lights just ...
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How to waterproof Shimano dynamo connector?
I have a Shimano DH-3N31-NT hub dynamo with following type of connector:
Yesterday, diodes in the bridge rectifier of my front LED light exploded. While I was disassembling the light, I noticed that ...
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What options do I have to charge my GPS and Phone using a dynamo hub?
I'm planning to purchase a supernova infinity-8 dynamo hub and wanted to use this during daylight hours to charge my Phone and GPS during bike tours.
What products are available that will work with ...
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Spokes bow out from the hub flange
Wheel building using a SON Dynamo hub (28 12 disc), Wheelsmith DB14 spokes (stainless; J-bend), and Velocity Atlas rims (700c; 32 hole) with a two-cross lacing pattern. Disc brake, loaded touring.
The ...
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Are dynamo hubs specific to particular lights?
I am looking to purchase a dynamo hub, such as those made by Shimano, Son, Exposure etc. and a set of lights to connect to it.
What I want to know is if any dynamo light will work with any dynamo hub, ...
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Will running an LED designed for batteries on a NEXUS dynamo hub damage the LED?
I have a question about LEDs on 6V Shimano dynamo hubs. I built up an old Schwinn with a Nexus dynamo hub, and the headlight I'm using is based on an LED 6V headlamp. The LED is a Chip-on-board design,...
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How to check your dynamo system?
I just bought my first hub dynamo (Shutter Precision PL-8) with dynamo headlight (Busch + Müller Lumotec IQ2 Eyc N Plus). After installation I figured out that light is not working. How to determine ...
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Can I run rim brakes on a disc rim?
I'm trying to buy a front wheel which will work with both disc and rim brakes so that I can use it on my cross bike (with rim brakes) and my mountain bike (with disc brakes) with a dynamo hub to power ...
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Are any anti-theft GPS trackers dynamo powered?
I am considering an anti-theft GPS tracker for my bicycle, but I am worried about battery life.
Are there any that recharge from a hub dynamo?
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On fitting 700C rims to a dynamo hub rated for up to 20"
I am currently in the planning stages of creating a really fancy front fork for my bike.
For a little background, I want to try to get this custom built Burrows monoblade with disc mount:
https://...
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Wheel with Centerlock hub for disc brakes and rim for caliper brakes
Does it make sense to build a wheel with a hub with Centerlock for disc brakes and a rim for caliper brakes?
My idea is to use the front wheel with a dynamo on two bikes, if I decide that I need a ...
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Dynamo cutting out after a couple of seconds
This sounds like I've an electrical issue, but no idea of next steps.
I have a Gazelle Tour Populair with what I believe is a Busch & Müller LYT Lumotec Retro front dynamo-powered light.
When ...
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Hub dynamo, maybe loose contact; maintenance?
I experience problems with my Shimano hub dynamo. A few days ago, I stood in the dark, without any visible damage.
Measurement prove that the dynamo does not deliver power.
I measured DC and AC ...
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Do you need to ride gentler with a dynamo hub?
I am going to purchase a dynamo hub and the way I like to ride is carefree abandon - going offroad, up and down curbs, straight through potholes, etc. My bike is a 90's rigid mtb with road tyres (26")....
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Are there LED based dynamo powered lights suitable for night time MTB riding on singletrack?
Are there LED based dynamo powered lights suitable for night time MTB riding on singletrack?
Likely they would need to have:
High Brightness, likely 500 lumens or better. Not sure how that translates ...
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Do hub dynamos with higher power output exist?
I know there are dynamos with 3 W as the highest output, but are there commercial dynamos available with even better effect? See, I don't mind pedaling with a bit more drag if I can get better ...
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Using trainer as dynamo
I was wondering if it is possible to to use a magnetic trainer as a dynamo.
While riding on trainers, at a gym, or at home, I always think to myself, "I wish I could capture all this energy and put ...
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Dynamo hub cones regulation
I have bought my first dynamo hub wheel with Shimano DH-3N72 hub.
The axle of the wheel fells like if it is over-tightened a bit, it rotates with feeling of clicks.
Should I loose the cones in the ...
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Has SRAM discontinued i-light hub dynamo?
I haven't been able to find SRAM hub dynamos lately. Has SRAM discontinued making of hub dynamos?
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Combining a Dynamo hub with a single speed geared hub setup
In theory, can you build a dynamo hub, say a SON, with a fixie/single speed gear, all mounted in the same hub and wheel? I will be building a touring rig with an extra wheel trailer and I would like ...
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Best type/designation of 2-strand wire to buy in bulk for generator and ebike lights
As a US-based shop mechanic, every time I try to buy 2-strand wire that can do the same things as what comes with generator and ebike lights, it gets deceptively complex. A lot of what's out there ...
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Which model of hub dynamo does the Cube Nuroad Race FE have?
I own a 2020 Cube Nuroad Race FE bike.
Do you perhaps know what model of hub dynamo this bike has or at least if it's AC or DC? I can't figure it out since there are no markings on it.
Here are a few ...
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Dynamo bike lights - unknown short circuit cause
I've bought and installed dynamo powered lights on my bike. A little bit about the setup - It's the bottle dynamo kind pressing against the tire system. The Dynamo produces current turning clockwise ...
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Rim dish and flange angle problem
this is the n-th time I have faced with this problem. The problem is than one flange of the rim is higher than another one. As you can see on the photo.
My rim is new this time, I have dynamo hub. ...
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What gauge wire is used for dynamo hubs and lights?
I have some non-standard bikes to hook up so rather than ordering the kits with fixed length wires, I want to just order appropriate double strand (or coaxial) wire in bulk, along with the connectors, ...
user36575
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Problems installing front and rear Busch and Muller dynamo lights to a shimano hub dynamo
I connected the Front Dynamo Light (Halogen Busch & Muller Lumotec Oval Senso) to the Shimano hub dynamo and it worked fine. I then connected the Busch & Muller D Toplight Plus Rear Carrier ...
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How do you repair or lengthen a B&M Luxos Control Cable?
Maybe this would be better off in electronics, but since it's bike gear specific, I thought I'd try here first.
I need to have longer control cables on B&M's Luxos U headlight/charger combo. This ...
user36575
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How can I spin a dynamo wheel at road speed for bench testing?
I can check my dynamo works by spinning the wheel on the workstand or just riding, but I'd like to do some more involved testing. I'd like to develop some custom electronics to use the extra power ...
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Should I replace both wheels/rims if I convert the front to a dynamo hub?
The title mostly says it all. Is there a reason to or a reason not to replace the back wheel or rim if I replace the front wheel to get a dynamo hub?
The only reason would be aesthetics, to keep the ...
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Rear stand light on a Cube Nuroad FE not working
I bought online a Cube Nuroad Race FE 2021 that comes full with fenders and dynamo lights. The front light is the Supernova E3 Pure and, although not stated clearly on Cube's site, the rear light ...
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How can we calculate the efficiency of the Siva Cycle Atom generator?
The Atom is a bike electricity generator made by Siva cycle and launched via kickstarter.
I was curious about how this generator compares to others (eg. hub dynamo/generators) in the market in terms ...
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Checking dynamo-wire contact
After my front wheel got damaged I took it to the BS where I purchased it and they replaced it.
However, after riding it I have noticed that with the new wheel the dynamo hub (Shimano Nexus) works ...
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