Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Electronics, Lighting, & Gadgets HRM, GPS, MP3, HID. Whether it's got an acronym or not, here's where you'll find discussions on all sorts of tools, toys and gadgets.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-13-14, 10:14 AM   #1
Badgerjohn
Kittery Maine / NC
Thread Starter
 
Join Date: Aug 2011
Bikes:
Posts: 175
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Dynamo/generator

Does anybody have any experience with a dynamo/ generator running a gps unit or phone? I see the old school type that spins on the tire and also a hub type.

Any input would be great. I was thinking why not use my Nav-system from the car for touring?

Thanks
Badgerjohn is offline   Reply With Quote
Old 02-13-14, 11:13 AM   #2
rifraf
Senior Member
 
Join Date: Apr 2011
Location: Perth Australia
Bikes: Surly Ogre, Carry Freedom Y-frame, Extrawheel Trailer
Posts: 713
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
G'day BadgerJohn,
I've been using dynamo hubs for about 20 years I guess.
I started with a front Sturmey Archer GH6.
The headlight options in those days were very limited and were really just to be seen by other road users as opposed to seeing anything by.
I now use a Son28 front dynamo hub with an Edelux 1 headlight and utilise a Philips Lumiring tail-light.
My hub also charges my Garmin Edge 800 gps and my cell phone.
It does this via an E-werk with a cache battery.

http://swhs.home.xs4all.nl/fiets/tes.../index_en.html

http://www.peterwhitecycles.com/schmidt-headlights.asp

http://www.peterwhitecycles.com/schmidt.asp

http://www.peterwhitecycles.com/ewerk.asp

http://cyclingtips.com.au/2012/09/ga...00-gps-review/

http://cyclingabout.com/index.php/20...cycle-touring/

Last edited by rifraf; 02-13-14 at 11:27 AM.
rifraf is offline   Reply With Quote
Old 02-13-14, 05:46 PM   #3
choa
Junior Member
 
Join Date: Mar 2007
Bikes:
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've been running a shimano hub dynamo with my android phone for some time on my daily commuter. Being an engineer I went the DIY way and made my own converter/charger.
Quote:
Originally Posted by rifraf
Glad to see there are more and more power supplies on the market, some of them are cheep too! I heard rave reviews about E-werk, but I find it quite expensive.
choa is offline   Reply With Quote
Old 02-13-14, 08:04 PM   #4
zacster
Senior Member
 
Join Date: Jul 2004
Location: Brooklyn NY
Bikes:
Posts: 4,966
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by ComPH View Post
Not exactly on the topic, but there is something with enormous appeal. Did you guys hear of the Magnic Lite? It is a Eddy current generator that generates power for light. I don't think it generates a lot of power, but it could slow down discharge rates, or slowly charge caps/batteries. It doesn't touch the wheel at any point, so the effort would be negligible. The rim has to be metallic, but doesn't need to be ferric (aluminum is fine). More on this here: http://www.magniclight.com/magniclight/index.php/en/ .
There was a long thread on this a few weeks back. The Magnic light though has no output, just the light. You would have to build it yourself. It is a pretty cool light though on its own.
zacster is offline   Reply With Quote
Old 02-14-14, 09:29 PM   #5
Aushiker
Senior Member
 
Aushiker's Avatar
 
Join Date: Jun 2007
Location: Fremantle, Western Australia
Bikes: Surly Long Haul Trucker, Salsa Mukluk, Giant Defy
Posts: 1,011
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)


I use a SON 28 dynamo on my Surly Long Haul Trucker and it was used on for example my Chasing the Dirt tour to keep my Garmin Edge 800, my mobile phone and my iPad 2 charged up. I used it conjunction with a PedalPower+ Super-i-Cable. On my Giant XTC 2 mountain bike I use a Shimano Deore XT DH-T785 dynamo hub to do the same thing.

Oh I have a SP PD-8 waiting to be built into a wheel to power-up my LoGo P-38 recumbent bike. It will do the same thing as the other dynamos.

Andrew
Aushiker is offline   Reply With Quote
Old 02-14-14, 11:37 PM   #6
rifraf
Senior Member
 
Join Date: Apr 2011
Location: Perth Australia
Bikes: Surly Ogre, Carry Freedom Y-frame, Extrawheel Trailer
Posts: 713
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Aushiker View Post
I use a SON 28 dynamo on my Surly Long Haul Trucker and it was used on for example my Chasing the Dirt tour to keep my Garmin Edge 800, my mobile phone and my iPad 2 charged up. I used it conjunction with a PedalPower+ Super-i-Cable. On my Giant XTC 2 mountain bike I use a Shimano Deore XT DH-T785 dynamo hub to do the same thing.

Oh I have a SP PD-8 waiting to be built into a wheel to power-up my LoGo P-38 recumbent bike. It will do the same thing as the other dynamos.

Andrew
Thats a nice tidy looking setup Andrew.
No more issues with the cables?
Hows your latest Garmin treating you?
Its a touring specific version?
rifraf is offline   Reply With Quote
Old 02-15-14, 07:59 AM   #7
Road Fan
Senior Member
 
Road Fan's Avatar
 
Join Date: Apr 2005
Location: Ann Arbor, MI
Bikes:
Posts: 12,265
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Quote:
Originally Posted by zacster View Post
There was a long thread on this a few weeks back. The Magnic light though has no output, just the light. You would have to build it yourself. It is a pretty cool light though on its own.
Also, there (at least when the Magnic thread was rampant) was no data on power output, so no way to assess whether any charging loads could be added, or if the internal generator could be switched from "lamp" to "charge." You'd have have to take on any modifications strictly on your own. There's a Kickstarter for a second generation that is supposed to have a stand light and beam pattern closer to complying to the German standard. It didn't mention an external charge function.

But it's claimed to have a very good quality of light output, and drag is not perceptible.
Road Fan is offline   Reply With Quote
Old 02-15-14, 08:01 AM   #8
Road Fan
Senior Member
 
Road Fan's Avatar
 
Join Date: Apr 2005
Location: Ann Arbor, MI
Bikes:
Posts: 12,265
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Quote:
Originally Posted by ComPH View Post
Sorry, I didn't see that. I am actually think of building the whole system myself, maybe several of them to get more output. I have a copy of the patent, should be able to do three phase coils over rotating magnets. Anyway, sorry if I am repeating other threads. I will be more careful next time.
I don't see this as a repeat, and I think your project is very interesting, being an electrical engineer myself.
Road Fan is offline   Reply With Quote
Old 02-15-14, 05:04 PM   #9
Lex Fati
Senior Member
 
Join Date: Sep 2012
Location: Stevens Point, WI
Bikes:
Posts: 73
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've been using the B & M Luxos U for about a year now, and very much like how the charging circuitry and battery is integrated directly with the light, and the light itself is one of the best headlight beams currently on the market.

It is designed to charge up the battery enough before charging any device so that the output is always at a constant USB voltage (5v). I have had such great results using it to charge my GPS and phone that I ended up getting a second one for another bike. On the newer unit, the cable to the USB port is fixed to the headlight unit, so water getting into the connection during a heavy rain is not an issue.
Lex Fati is offline   Reply With Quote
Old 02-15-14, 05:18 PM   #10
choa
Junior Member
 
Join Date: Mar 2007
Bikes:
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ComPH View Post
Hub dynamo is great for touring, but too heavy for my taste.
Nothing is too heavy for my >15kg touring bike . At least the weight difference is minimal as the average hub dynamo adds ~300g to the wheel, and one Magnic Light is ~150g. According to the other thread, the maker claims the power output is 1W @30 (!) km/h. This is no surprise considering the size and the fact it is basically a bottle dynamo with (eddy current) magnetic coupling instead of mechanical.
But having the option to easily move it from bike to bike is great, I do hope they soon make a scaled up version and ditch the light in favor of USB.
choa is offline   Reply With Quote
Old 02-16-14, 11:50 AM   #11
Badgerjohn
Kittery Maine / NC
Thread Starter
 
Join Date: Aug 2011
Bikes:
Posts: 175
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Lex Fati View Post
I've been using the B & M Luxos U for about a year now, and very much like how the charging circuitry and battery is integrated directly with the light, and the light itself is one of the best headlight beams currently on the market.

It is designed to charge up the battery enough before charging any device so that the output is always at a constant USB voltage (5v). I have had such great results using it to charge my GPS and phone that I ended up getting a second one for another bike. On the newer unit, the cable to the USB port is fixed to the headlight unit, so water getting into the connection during a heavy rain is not an issue.
Ok I don't get it? What actually makes the power on this thing? Yeah a noob question, but does it work in conjunction with a hub, or what?

Thanks
Badgerjohn is offline   Reply With Quote
Old 02-16-14, 01:17 PM   #12
zacster
Senior Member
 
Join Date: Jul 2004
Location: Brooklyn NY
Bikes:
Posts: 4,966
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
The Luxos U is a dynamo powered light, usually used with a hub dynamo. It has a USB port built in. It can power or charge a low power USB device, but not a high power one like an iPad, especially when the iPad is on GPS tracking.
zacster is offline   Reply With Quote
Old 02-16-14, 04:35 PM   #13
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 18,806
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 218 Post(s)
AFAIK at best it's a trickle charge USB is not a high current specification..

[TABLE="class: wikitable"]
[TR]
[TD]USB Battery Charging[/TD]
[TD]0.5–1.5 A[/TD]
[TD]5 V[/TD]
[TD]2.5–7.5 W[/TD]
[/TR]
[/TABLE]

http://en.wikipedia.org/wiki/USB

Last edited by fietsbob; 02-16-14 at 04:40 PM.
fietsbob is offline   Reply With Quote
Old 02-16-14, 04:48 PM   #14
Lex Fati
Senior Member
 
Join Date: Sep 2012
Location: Stevens Point, WI
Bikes:
Posts: 73
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes, sorry. The Luxos U is dynamo powered. I use hub dynamos.

Of course no device will be able to charge beyond the maximum output capacity of the dynamo, but the advantage that this has is that the light and the charging circuitry come in one unit. There is no need to find another mount point for the charging device. No extra battery is required to ensure constant, even USB voltage output so device specific adjustments are not necessary.

Combined with a dynamo hub, this is more than enough to keep a Garmin bike GPS unit charged. I use a bicycle specific GPS, but I don't see why it wouldn't work with your car GPS. I guess it would depend on how much power your unit really uses. Bigger screens mean more juice is needed.

While I'm not very familiar with the auto GPS units or the mounting options, the Garmin bicycle units do mount to a bicycle quite well. Now, there are "Touring" models that cut out some of the racer/training fitness specific options, and a lot of the related cost.

Personally, I like to plot my routes before I ride, even with a bike GPS. I'd be even less comfortable relying on a car GPS to find routes that are bicycle friendly.
Lex Fati is offline   Reply With Quote
Old 02-18-14, 10:39 PM   #15
Aushiker
Senior Member
 
Aushiker's Avatar
 
Join Date: Jun 2007
Location: Fremantle, Western Australia
Bikes: Surly Long Haul Trucker, Salsa Mukluk, Giant Defy
Posts: 1,011
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by rifraf View Post
Thats a nice tidy looking setup Andrew.
No more issues with the cables?
Hows your latest Garmin treating you?
Its a touring specific version?
Thanks and no issues with cable and latest Garmin is the Edge 810 so not the touring model. It is behaving okay which is a nice change

Andrew
Aushiker is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 05:48 AM.