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.

Reply
 
Thread Tools Search this Thread
Old 09-16-13, 01:09 PM   #1
asmac
Senior Member
Thread Starter
 
asmac's Avatar
 
Join Date: Aug 2011
Location: Toronto ON CA
Bikes: Salsa Vaya
Posts: 947
SRAM dynamo hubs

I am looking for a 36h, silver, iso disc dynamo hub and SRAM's I-light D7 seems to fit the bill. As a bonus, it uses cartridge bearings, is well priced, and claims low drag.

Does anyone have experience with this hub? Is it recommended? Any issues to be aware of?
asmac is offline   Reply With Quote
Old 09-18-13, 08:34 PM   #2
asmac
Senior Member
Thread Starter
 
asmac's Avatar
 
Join Date: Aug 2011
Location: Toronto ON CA
Bikes: Salsa Vaya
Posts: 947
OK... I guess no one actually uses this. And it turns out that my LBS can't order it so it hardly matters. A phantom dynamo.
asmac is offline   Reply With Quote
Old 09-19-13, 09:07 AM   #3
lhendrick
Senior Member
 
Join Date: Nov 2011
Location: New York and Florida
Bikes: Surly LHT, Trek 2100, Trek 7000 (1995 or so) Trek 7000
Posts: 236
Beware. If you use one YOU may disappear.
lhendrick is offline   Reply With Quote
Old 09-19-13, 10:37 AM   #4
LuckySailor 
Senior Member
 
LuckySailor's Avatar
 
Join Date: Jun 2012
Location: Winnipeg, Manitoba, Canada
Bikes: Trek 520 total custom build, Cannondale Mountain Tandem, Oryx Mountain Bike
Posts: 534
www.peterwhitecycles.com

Hi. The above link is a tremendous resource for dynamos, and headlights, and tail lights. He has extensively tested and filmed headlight beams. He also outlines a slew of dynamos, and talks about drag, outputs, wiring, etc.
LuckySailor is offline   Reply With Quote
Old 09-19-13, 12:39 PM   #5
noglider 
aka Tom Reingold
 
noglider's Avatar
 
Join Date: Jan 2009
Location: West Village, New York City
Bikes: too many
Posts: 26,626
I have the Sanyo hub on my Bianchi Volpe. It would probably end up at the bottom of the heap if someone reviewed all of the available hubs. I received it as a gift, so I had no choice in the model. I've found it to be entirely reliable. The drag is completely acceptable. In fact, I don't notice it. I run my lights day and night. At speeds of about 18 mph and higher, I feel a vibration through the handlebars, but I don't feel drag.

I have a very old "bottle" dynamo on my Raleigh Twenty. I can feel the drag, but it isn't annoying. Of course, I won't run it when I don't need it. I really should put a cap on the roller to "gear it down," because with 20-inch wheels, I'm spinning it faster than necessary.
__________________
Quote:
Originally Posted by noglider
Please email me rather than PM'ing me. Thanks.
Tom Reingold, noglider@pobox.com
New York City and High Falls, NY
Blogs: The Experienced Cyclist; noglider's ride blog
noglider is offline   Reply With Quote
Old 09-24-13, 12:29 AM   #6
yyy
Junior Member
 
Join Date: Dec 2012
Bikes:
Posts: 5
Speed of bottle dynamo is independent of wheel size, it depends only on linear movement speed.
yyy is offline   Reply With Quote
Old 09-24-13, 08:11 AM   #7
noglider 
aka Tom Reingold
 
noglider's Avatar
 
Join Date: Jan 2009
Location: West Village, New York City
Bikes: too many
Posts: 26,626
Ah, duh, you're right!

Speaking of which, I found a mechanical odometer that runs on the sidewall. No calibration needed. I guess I'll install it on the Twenty. Most pressing reason for doing this: because I can.
__________________
Quote:
Originally Posted by noglider
Please email me rather than PM'ing me. Thanks.
Tom Reingold, noglider@pobox.com
New York City and High Falls, NY
Blogs: The Experienced Cyclist; noglider's ride blog
noglider is offline   Reply With Quote
Old 09-24-13, 02:35 PM   #8
bootskelsey62
Bike nutz for 45+ years
 
bootskelsey62's Avatar
 
Join Date: Nov 2008
Location: SW Indiana
Bikes: Which one?
Posts: 25
I do have one. Ive only had it for about 45 days. As for drag, I can feel it but it can be compared to the drag of a chip & seal road. The BIG problem is......NO SERVICE PARTS!.....NONE! I have been trying to get a extra wire clip and my LBS said they do not service it. I thought WTF! So three e-mails and two service center calls later (NO e-mail replies) I gave up. I WOULD NOT BUY! Drop a few more bucks and get one with replacement parts available. Hope this helps, Bootsie.
bootskelsey62 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 10:17 PM.