Planetary gear hub for unicycle

September 25, 2007 in Hubs & Parts

It looks like a modified 7 Speed Sram hub which Unifrank modiefied to build up a prototype of a unicycle. He has some great CAD animations showing the planetary gears roooootating.

New Rohloff Speedhub in 2008

September 20, 2007 in Hubs & Parts
Tags: , 14, 2008, geared, hub, internally, review, Rohloff, speed, speedhub

The german bicycle magazine “Aktiv Radfahren” announces new Rohloff hub prototypes. On the Eurobike 2008 the german gear hub manufacturer will show first versions of a 14 gear hub with:

An overall gear transmition ratio of 580% (today 528%).

The hub shell will be 20% smaller.

The weight will be reduced from 1700g to around 1400g.

Rohloff will [...]

New Shimano 3 speed hub with disc brake

September 18, 2007 in Hubs & Parts, Urban Bikes
Tags: 3, bicycle, bike, BR-M415, city, commute, disc, gear, hub, IG-3C41, internal, Shimano, Specialized, speed

There is a new gear hub version from Shimano. It´s based on theNexus INTER-3 internal gear hub but comes now with the option for a disc brake mounting. The new 2008 Specialized Globe Centrum Elite IG3 is one of the first (maybe the first) bike which comes with this new hub.Picture copyright SpecializedHere we see [...]

The right wording or Nabenschaltung = Internally Geared Hub

September 18, 2007 in Hubs & Parts

The main manufacturer of internal geared hubs use different synonyms. I had a look into the manuals, brochures, handbooks,…
Which is your favorite synonyme?
Here is the result:
Englisch:

Internally Geared Hubs (Shimano)
Internal Geared Hubs (Shimano)
Geared Hubs (Sram)
Internal Gear Hubs (Rohloff)
Gear Hubs (Rohloff)

Deutsch:

Getriebenaben (Sram, Shimano, Rohloff)
Nabenschaltung (Sram, Shimano, Rohloff)

Nederlands:

Versnellingsnaven (Sram)
Versnellingsnaaf (Rohloff)

Francais:

Ensembles de moyeux a vitesses intégrées (Sram)
Moyeu a [...]

Centurion Cykler pure internal gear hub bikes

September 13, 2007 in Urban Bikes

The danish bicycle company CENTURION offers pure sportive bikes with internally geared hubs. This bike concept is special and different. The bicycle look clean and tidy. No hanging bowden cables… I prefer this kind of bicycle concept. They come with Shimano and SRAM internal gear hubs. Also longlasting rollerbrake models are available. Also two [...]

Triple speed / Are three internal hub gears enough for a bicycle

September 11, 2007 in Urban Bikes
Tags: , 2008, 3, geared hub, internally, lady, simplicity, speed, Sram, swiss, t3, velotech

The swiss company velotech promotes a great bicycle:

It has a three gear Shimano Nexus internal gear hub with a coaster brake. It´s uptodate equipped. I missed a bike concept like this before. Normally well equipped bicycles come with a Inter 8 Nexus from Shimano or a i-motion 9. In my opinion 3 gears are enough [...]

The Fichtel & Sachs Torpedo Duomatic internal gear hub Story

September 9, 2007 in Hubs & Parts
Tags: back, bike, duomatic, F&S, Fichtel, folding, geared, hub, internally, kick, Klapprad, Sachs, schweinfurt, Sram, torpedo

Torpedo Duomatic (2 gear)

Manufacturer / Location:
Fichtel & Sachs / Schweinfurt, Germany
Background:
The Duomatic hub production started in 1964. This was the time of the german “Wirtschaftswunder”. This was the time with a strong economic growth after world war two. The germans bought the VW Käfer (Volkswagen Beetle) and loved the new freedom. But how to transport [...]

Tandem with Fichtel & Sachs Torpedo Automatic gear hub

September 9, 2007 in Hubs & Parts

I found a 30 year old 26″ Tandem with a Fichtel & Sachs Torpedo Automatic hub on eBay.

The interesting thing is that the hub is designed for the power of two cyclists! That means there is a much higher mechanical spare inside the hub. The static weight of two riders and the momentum into the [...]