Repair of my Biemmezeta (BMZ) Bike

First Tour - at the danube island

Maybe this Page is not very interesting for you, but its more a note for myself if i need spare parts in the future.

The Biemmezeta has mostly common parts:

  • Shimano HG40 Chain
  • 28" wheels with quick release hub axle
  • New Shimano Brake Handle - old brake handles was waste, i needed to change the bowden-cables and there was a set with brake handles as well :)

But there are some "specialties" as well.

  • The bottom bracket is ITA 70mm (36mm x 24TPI), axle length 130mm. Both sides are right handed threads! Such a bottom bracket is quite hard to get, as the 130mm axle length is not very common.
  • The rear sprocket is screwed and does not use the Shimano type extractor tool but the two-pin version (Park Tool FR-2)

Things that need service

  • The bottom bracket is probably broken and needs to be replaced
  • The bottom bracket is actually a loose bearing. It is quite good serviceable and from what I saw, the bearning surfaces and the bearing itself looks OK.
  • Adding a back carrier, because having one is always good
  • New shifters integrated in the brake handle would be nice
  • Some screws that hold the chainrings together have rounded corners now (dt: "rundgedreht") - they need to be replaced
  • Maybe disassemble the headset completly and clean everything

Impressions

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