Shaft Drive Klunker bike

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Hey Ratters,

I'm working towards my first completely scratch built bike.
And I thought; Lets share the whole process!

At the moment I am working on setting up and arranging my workshop, since I'm slowly working towards building frames for customers.

Regarding this bike I had in mind: I have five brand new shaft drives in boxes. Three 'singlespeeds' or 'three speeds' and two with an threaded rear sprocket.
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Two types: Right is for regular hubs like the Shimano CB-E110 or Nexus 3.

At the moment I am doing lots of inquiry! Measuring, calculating and looking for good mountainbiking geometries.

The shaft drives 'chainstay length' is fixed, so that is why I can't build a long chainstay (belly mounted BB) cruiser with this.

Right now I am figuring out the measurements of this shaft and how I build a durable frame with this.

Unfortunately VERY fat tires won't fit, probably a maximum of 2 inches, depending on wheelsize.... which is dependant on the internal gear ratio....

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Measuring the dropout width.

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BB shell.

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My sketch of the bike.
A looptail, shaft driven klunker bike :inlove:

I intend to use CroMo tubing.
 
Little update:

I checked the intended dropout width in multiple ways: In my alignment jig and by assembling/adjusting the rear hub.

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Shimano CB-E110 hub.

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I also checked the Ratio: 1:2
1x crank turn = 2x wheel turning.

Tire clearance is meh. We'll see what we can do with that.
 

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