Bottom bracket holder for 50 mm mast

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Of course Ginkgo has the 50 mm mounting brackets in their store but not the BB tube and holder itself.

Who sells such a thing?

Are there photos?
 
In newer VMs the Carbon tubing is made by Velomobileworld itself I suppose.
So maybe ask Jan or Mircea about it.
Or get Aluminium tubing if you must.
Available online. Not sure which is good.
 
OK so I looked at velomobileworld tech pages and it seems that I need an Alpha 7 BB holder which I must order from a dealer.

@ChristianW is the BB holder under the boom?

You used to have a 2 x derailleur if I remember? Does that go under the boom to the front?

Thanks!
 
Sorry - misunderstood…

Yes, Alphas have it under the mast, but Bülks above.
I don’t have a derailleur in the front but it is possible.
 
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