Dahon joule II dynamo hub
10-07-13 | 11:38 AM
#3
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what he said
10-07-13 | 05:56 PM
#4
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From: On the road-USA
Bikes: Giant Excursion, Raleigh Sports, Raleigh R.S.W. Compact, Motobecane? and about 20 more! OMG
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.
Aaron
Aaron
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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.
RIDE, YOU FOOL, RIDE!"_Nicodemus
"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"_krazygluon
05-01-17 | 07:26 PM
#5
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From: Chicago area
Bikes: Airborne "Carpe Diem", Motobecane "Mirage", Trek 6000, Strida 2, Dahon "Helios XL", Dahon "Mu XL", Tern "Verge S11i"
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: https://hubstripping.wordpress.com/2...le-dynamo-hub/
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!
Steve
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!
Steve
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