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Tanshanomi’s Bikes

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Category: Bultakenstein

A shadetree amateur’s attempt to create my own low-budget, scratch-built motorcycle, to find out whether I could do it. Ten years later, I still don’t quite know the answer.

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  • Bultakenstein
On October 2, 2020

Tank mount fabrication

I got the fuel tank mounted. In British fashion, the BSA OIF Export tank is designedRead More

  • Bultakenstein
On September 30, 2020

Rearsets finished!

I can officially scratch rearsets off my punch list. Words cannot express what relief and satisfactionRead More

  • Bultakenstein
On September 29, 2020

Welded cross-shaft

After letting this shift shaft cause me bunch of unnecessary headaches — playing around with allRead More

  • Bultakenstein
On September 23, 2020

Shift clevis fabrication

This morning before work, I made up the clevis for the right-side shift linkage out ofRead More

  • Bultakenstein
On September 16, 2020

Other crossover gearshifts

My crossover shifter dilemma is not unique. Back in 1975, when new Federal regs required left-sideRead More

  • Bultakenstein
On September 16, 2020

Cross-shaft goes kaput

It turns out my bolted-up cross-shaft design was fundamentally flawed. My father-in-law was a research chemist,Read More

  • Bultakenstein
On September 15, 2020

Shift linkage progress

I used an old, scrap brake rod to mock-up the linkage between the lower arm andRead More

  • Bultakenstein
On September 3, 2020

Foot pedal tweaks

Playing around with the shift linkage some more, I’ve decided to go back to how IRead More

  • Bultakenstein
On August 31, 2020

Gearshift cross-shaft fabrication

For my crossover linkage, I needed to create a rotating shaft with splined ends. This isRead More

  • Bultakenstein
On August 25, 2020

Rivnuts are my new favorite thing.

I’m working on the shift linkage, which is (of course) way more complicated than you’d expect—becauseRead More

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Project Bikes

  • Aermacchi-Ducati Special
  • Benelli 250R
  • Bultakenstein
  • Honda CL125S [Sold]
  • The Bride
  • Various

Recent Posts

  • Tank Mount, Continued
  • Geometry!
  • Mounting The Bride’s tank
  • Another Benelli 250R Mockup
  • EPM Engineering V50 bearing cups

Snap Judgments

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