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 09-01-07, 03:31 PM   #1
Rick Smith
Senior Member
Thread Starter
 
Rick Smith's Avatar
 
Join Date: Feb 2007
Location: Shaker Heights, Ohio
Bikes: Azor Mechanic Series 108
Posts: 183
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Adding an extra generator headlight?

Hello,

Is it possible to add another headlight to a Shimano Nexus Dynamo Hub? The Azor 108 I'm riding has a hub that powers an LED rear light and a Lumotec headlight. I'd like to add a second headlight at the front of the front rack (see below):



But it looks as if there's only two 'prongs' (I'm no electrician nor a mechanic) for the light units:



Would I be able to swap out this part for a 'three prong' part?

Or is the hub even able to power three lamps?

Thanks for any help provided - need more light -

Rick

Last edited by Rick Smith; 09-01-07 at 06:21 PM.
Rick Smith is offline   Reply With Quote
Old 09-03-07, 02:41 PM   #2
Michel Gagnon
Year-round cyclist
 
Join Date: Apr 2002
Location: Montréal (Québec)
Bikes:
Posts: 3,023
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You could do it, but it's a bit tricky. I suggest that you read Peter White's pages on lighting (look for "Secondary" Lumotec and E-6) and to the wiring instructions. Most of what he writes is also true for the Shimano generators.


A few things to note.

1. The lights need to be fed in series, not in parallel.

2. For the secondary, you need the special "secondary" headlight which is wired differently. When you turn the Secondary OFF, you actually short it. Alternately, you might install an unswitched headlight, except it will always be on when the main one is on, and it won't be bright until you reach 18-22 km/h.

3. Because the Shimano hub is not insulated, you'll need to insulate the Secondary light: i.e. install it on some kind of plastic bracket.

4. Depending on where you ride, you might get equally satisfying results by replacing your current Lumotec with a Schmidt E-6 headlight. It's expensive, but it's an awsome upgrade.
Michel Gagnon is offline   Reply With Quote
Old 09-04-07, 07:10 PM   #3
Rick Smith
Senior Member
Thread Starter
 
Rick Smith's Avatar
 
Join Date: Feb 2007
Location: Shaker Heights, Ohio
Bikes: Azor Mechanic Series 108
Posts: 183
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks, Michel. Sounds like I may need to simply add an auxilliary battery-powered headlight.
Rick Smith 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 12:48 PM.