Seen at Eurobike: Biologic Joule 3


by Byron on Aug 28, 2012 at 11:36 AM

Joule 3

Joule III is a shiny, power-generating hub

This new Biologic Joule 3 arrived at Hugga HQ a few weeks ago and Tern is demoing it today at Eurobike. Eurobike is like the CES of the European bike industry and next month is Interbike for the North American market. As you can see in that photo, the Joule is significantly improved and much shinier than the version I rode with in Maui last year. The Joule II worked well powering the Reecharge case and the iPhone in it while I rode, but was a bit bulky and creaked on the road when engaged in power mode. As Tern’s PR told me

The BioLogic Joule 3 is the most up-to-date Dynamo hub on offer as it’s smaller, lighter, more efficient and powerful than any other available right now.

After lacing this dynamo hub to another wheel, I’ll ride it in Maui again. The full product details haven’t been released, but expect pricing at $150.00.


The Joule 3 just won a EuroBike award in the Design category.

EB award

The now award-winning Joule

Share this story:

Recommended Reading

Is this a 100mm wide hub for regular bicycles, or a 75mm wide one for folding bicycles?

Is Biologic related to Dahon (that used to be their house brand for components) or something else?  The only dynohub offered on their website is offered in a complete 20” wheel.

I’m waiting for a budget 75mm wide dynohub that I can run on my Bike Friday Tikit.  Dahon/Biologic hasn’t offered just the hub in the past, only complete wheels.

The one I have is 100M. Biologic is a Tern brand. The hub hasn’t been brought Stateside yet that I know of. I have it to gauge interest and also give them some feedback.