Search
Notices
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.

Do I need a dynamo?

Thread Tools
 
Search this Thread
 
Old 10-01-11 | 06:52 AM
  #1  
jrickards's Avatar
Thread Starter
Senior Member
 
Joined: Jul 2011
Posts: 2,647
Likes: 6
From: Sudbury, ON, CA

Bikes: 2012 Kona Sutra, 2002 Look AL 384, 2018 Moose Fat bike

Do I need a dynamo?

My bike commuting will end in about a month because of temperatures. Even now on my ride in to work from about 6:15 to 7am, at least 20 minutes of it are in night conditions and the sun doesn't get above the hills till after 7am. However, I am riding on, for the most part, well-lit residential streets so I don't need a superbright light for seeing the road but I would like to improve the brightness of my front light so that I can be better seen by others. Therefore, I am looking for a basic dynamo and light setup and am not opposed to adding a rear light to my bike (my flasher is on the back of my backpack).

I understand the Sanyo hub is quite reasonably priced. I don't have disc brakes so I don't have to look for a disc-compatible model of hub. I am riding a mountain bike.

Ideally, I would like the headlight to mount from the bottom of the stem but I haven't seen a mount like that: the reason is that I don't like "crowding" out the handle bars.

Any suggestions?
jrickards is offline  
Reply
Old 10-01-11 | 09:04 AM
  #2  
Looigi's Avatar
Senior Member
 
Joined: Dec 2010
Posts: 8,951
Likes: 14
One or more bright rear flashers mounted to the bike. On the backpack might be OK but tough to ensure it is and remains properly aimed.

For the front, a battery powered LED white flasher. The batteries last a long time in LED flashers.
Looigi is offline  
Reply
Old 10-01-11 | 09:58 AM
  #3  
dcrowell's Avatar
Fat Guy Rolling
 
Joined: Jul 2008
Posts: 2,434
Likes: 1
From: Louisville Kentucky

Bikes: Bacchetta Agio, 80s Raleigh Record single-speed, Surly Big Dummy

I love my dynamo setup, but the whole system will set you back some money, and be not as bright as some better battery systems.

If you're not going to do a lot of night riding (in sounds like your commuting is part-time) and you don't mind dealing with batteries, battery lights are going to cost a lot less.

If you hate dealing with recharging or replacing batteries and ride a lot at night, then you may want a dynamo.

I liked the look of the SON hub. Yes, it's shiny. So I spent a total of over $500 at my LBS for them to order the parts, build a wheel, and install the lights. I have the B&M IQ Cyo headlight and B&M Toplight Flat taillight. I also use a small blinky taillight that runs on AAA batteries for a backup.

Oh, you'll also *still* want a flash light or something with you so that if you need to fix a flat on the side of the road at night, you can. A dyno light doesn't work for that.

I could have saved money by going with a cheaper hub and it would work just as well. Depending on your LBS and your rim choice, you could probably get a complete system for less than $400 based upon the Sanyo hub... even less if you buy a pre-built wheel online.
dcrowell is offline  
Reply
Old 10-01-11 | 02:51 PM
  #4  
ks1g's Avatar
Because I thought I could
 
Joined: Dec 2004
Posts: 969
Likes: 0
From: Wash DC Metro

Bikes: November, Trek OCLV, Bianchi Castro Valley commuter

Rear: I would go with something like a pair of Planet Bike Superflash, use their seatstay clip. Maybe a 3rd zip-tied to the back of your helmet. Bring them in during the day if you want to warm up. Unless your commute (round trip) is around 2hr+, high capacity NiMH should be adequate and I would look at something like the Dinotte 200L AA-version; either on helmet. A secondary battery powered light for backup. Again, I'd bring them inside so they can warmup during the day; carry a second holder of, perhaps single use Lithium AA cells for backup. I think a Dynamo would be overkill.
ks1g is offline  
Reply
Old 10-01-11 | 08:17 PM
  #5  
jrickards's Avatar
Thread Starter
Senior Member
 
Joined: Jul 2011
Posts: 2,647
Likes: 6
From: Sudbury, ON, CA

Bikes: 2012 Kona Sutra, 2002 Look AL 384, 2018 Moose Fat bike

Thanks guys. You seem to agree that a dynamo may be overkill so I will just enhance my lighting with battery powered lights.
jrickards is offline  
Reply
Old 10-01-11 | 09:28 PM
  #6  
bicycleflyer's Avatar
747 Freight Pilot
 
Joined: Aug 2008
Posts: 458
Likes: 0
From: Ohio, USA

Bikes: Rivendell, Bike-Friday Pocket-Rocket and one home made fixed gear

You don't necessarily need a dyno hub. There are some other dyno options such as a bottom bracket mounted dyno or one of those units that clamps onto your fork and has the light built in. Take a look at Peter white's website, he has some options available as well as another dealer called yellow Jersey.

But I do agree with the other posters, it sounds as if you could get along fine with a battery light. If a dyno's 3 watt output was good enough for you, then I recommend the cateye EL-320. Self contained, no cables and plenty bright with flashing mode to boot. Supplement that with a Printon Tec "EOS-bike" on your helmet.

Lot's of good tail light choices out there.....make your own choice.
bicycleflyer is offline  
Reply
Old 10-01-11 | 09:43 PM
  #7  
bicycleflyer's Avatar
747 Freight Pilot
 
Joined: Aug 2008
Posts: 458
Likes: 0
From: Ohio, USA

Bikes: Rivendell, Bike-Friday Pocket-Rocket and one home made fixed gear

As for your not crowding your bars, have you considered mounting a "space-bar" and aiming it straight down.

Or you could do this....

https://s164.photobucket.com/albums/u...rrent=picb.jpg
bicycleflyer is offline  
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
suncruiser
Electronics, Lighting, & Gadgets
5
08-30-17 11:20 AM
scaryseth
Commuting
33
10-07-12 01:06 PM
Richard Cranium
Electronics, Lighting, & Gadgets
45
04-28-12 10:44 PM
BiketoFeel
Commuting
40
09-07-11 10:17 AM
yep202
Commuting
11
06-08-11 04:32 PM

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.