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

Go Back   > >

Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

User Tag List

Thread Tools Search this Thread
Old 10-06-13, 10:44 AM   #1
Thread Starter
Join Date: Oct 2013
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Dahon joule II dynamo hub

Bought this, my first dynamo hub. Feels like having a lot of resistance, as if breaks sitting on rims. Is that normal?

Foldingmart is offline   Reply With Quote
Old 10-06-13, 10:53 AM   #2
Senior Member
Join Date: Apr 2006
Posts: 2,817
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
It is just the magnets in the dyno hub stopping the wheel because of their magnet attraction. At riding speed you will never feel or notice it. Almost all if not all dyno hubs do the. Roger
rhenning is offline   Reply With Quote
Old 10-07-13, 11:38 AM   #3
New usename ThorUSA
brakemeister's Avatar
Join Date: Nov 2004
Location: Southern Illinois USA
Posts: 2,469
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
what he said
Dahon : Freedom Unfolds
Tern : all about the ride
brakemeister is offline   Reply With Quote
Old 10-07-13, 05:56 PM   #4
Membership Not Required
wahoonc's Avatar
Join Date: Jan 2005
Location: On the road-USA
Bikes: Giant Excursion, Raleigh Sports, Raleigh R.S.W. Compact, Motobecane? and about 20 more! OMG
Posts: 16,802
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
You should feel a notchiness when you spin the wheel by hand. There is some drag on the wheel from the dyno hub, but it is typically not noticeable when riding.

Webshots is bailing out, if you find any of my posts with corrupt picture files and want to see them corrected please let me know. :(

ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.

"Cycling should be a way of life, not a hobby.

"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"
wahoonc is offline   Reply With Quote
Old 05-01-17, 07:26 PM   #5
Senior Member
sweeks's Avatar
Join Date: Sep 2004
Location: Chicago area
Bikes: Airborne "Carpe Diem", Trek 6000, Strida 2, Dahon "Helios XL", Dahon "Mu XL", Tern "Verge S11i"
Posts: 701
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 301 Post(s)
At the risk of irritating some others by resurrecting this old thread, there is a report on renovation of a Joule hub on "Hubstripping" here:
This was a Joule I hub, and the process may not apply to Joule II hubs. Joule III hubs are made by Shutter Precision, and apparently can be overhauled by the factory. I haven't had the opportunity (read "need") to service my Joule III.
Note that all these hubs have a "notchy" feel to them when you spin the axle off the bike. This is from the strong attraction between the rotor (magnets with many "poles") and the stator (coils). Once the wheel is on the bike, it spins much more freely, though it spins down faster than a non-dyno hub. When you ride, you will not notice the resistance, even with the light on.
I recently found a SP hub on sale and picked it up for future building into a wheel for my road bike. This brand-new hub feels like a pepper mill when the axle is turned!
sweeks is offline   Reply With Quote

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 09:34 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    get answers from real people!
Click to start entering your question.