Shaft Drive Klunker bike

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Love the shaft drive. Several shaft drive bikes hang from the ceiling of the old General Store in St. Augustine, Fl. A couple show up in these pictures.
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Love the shaft drive. Several shaft drive bikes hang from the ceiling of the old General Store in St. Augustine, Fl. A couple show up in these pictures.
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Wow, that is a cool place! Interesting things hanging there. If I pull a rope, will I win a prize? :p

I managed to do some soldering / brazing:

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Cleaning the tubes!

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First I had to braze the seatpost because the off centre BB is in the way.

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Flux.

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Seatpost brazed!

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Droplet in the rear, I gotta watch out for that next times.

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Mitered the downtube and cleaned it. Flux on it and lets go!

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Headtube. Not perfect, but I'm happy how it turned out!

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Let it cool down in the shed.

Top tube(s) next and planning on bending the chainstay.

Seattube is 28mm diameter.
Downtube is 35mm diameter.
 
I worked on cleaning the fillets and coloration on the frame.
After about 20 minutes my dremel tool stopped working so I continued with an hand file and sandpaper.

I wanted to take this frame + the shaft to a swapmeet.
I am aware this is entry level brazing, but everyone started somewhere.

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These sanding cones are great, but get destroyed easily. Protective eyewear is a must!

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Still some brass to be removed, but I don't mind this 'rough' look right now. What do you think?
 
I worked on cleaning the fillets and coloration on the frame.
After about 20 minutes my dremel tool stopped working so I continued with an hand file and sandpaper.

I wanted to take this frame + the shaft to a swapmeet.
I am aware this is entry level brazing, but everyone started somewhere.

View attachment 284868
These sanding cones are great, but get destroyed easily. Protective eyewear is a must!

View attachment 284869
View attachment 284870
View attachment 284871
View attachment 284872
Still some brass to be removed, but I don't mind this 'rough' look right now. What do you think?
I think it cleaned up real good.👍
 
I think it cleaned up real good.👍
Thank you Kevin!

Today I matched the shaft and customized coasterbrake. I'm really excited! My first completely from scratch built brazed frame.

Offcourse, chainstays, toptube is missing, but you'll probably get the idea.

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just an observation, not a criticism... Is the Q factor of shaft bikes wider than chain drivetrains? The BB looks wide.
 
just an observation, not a criticism... Is the Q factor of shaft bikes wider than chain drivetrains? The BB looks wide.
No problem, even criticism can be learning material :thumbsup:

The BB is pretty wide compared to 'standard' JIS square tapered shafts.

The complete shaft, including the square tapers is 151,5mm.

Interesting thing I was thinking about earlier regarding the Q factor:

Crankarms are most of the time positioned more outwards. I get that, since it gives clearance for ankles. (Old cotterpin cranks would be straight).
But I have never seen crank arms with that 'width' specifically specified. It might be important now that many mountainbikes have a short chainstay and wide tires (so very little space for the chainstay tube!).
It is very interesting to see how custom builders tackle this challenge.

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