Φ Bultakenstein [Aborted]

This morning I made my swingarm shaft spacer. Starting with 7/8″ OD .156 DOM, I cut it to length with a hacksaw, filed the ends a bit to ensure that the faces … Swingarm spacerRead more

A tiny milestone reached: I actually bolted the swingarm to the frame this morning. Here it is from the outside… …and inside. The holes in the frame plate are tapped. I may … A (Minor) MilestoneRead more

I’m working on the escutcheon plate that will decrease the diameter of the left frame hole for the swingarm shaft. Not finished yet, but this in-progress fit-up gives you an idea what … Escutcheon fabricationRead more

My plan to use an external plate to neck down the diameter of the frame’s existing swingarm pivot hole in got me thinking more thoroughly about what I needed. Some careful observation … Escutcheon plate designRead more

But I managed to overlook one of those unforeseen consequences I’ve been trying so hard to avoid. The swingarm is going to interfere with the rear crankcase mounting bosses. Fortunately, even though … Well whaddaya know, it fits!Read more

How long does it take to turn down an axle? Well, when you don’t have access to a lathe, and you’re trying to get it done inexpensively, and you aren’t even sure … Swingarm pivot doneRead more

Okay, so not totally. I’ve collected more parts, scrubbed and sanded parts, and completed a few other minor bits of fabrication. But as far as the swingarm mounting issue goes, I’ve decided … I’ve wasted a whole year!Read more

Well, I thought I was making real progress, but I’m rethinking my idea of moving the swingarm pivot rearward from the rear engine mount. I’m afraid it’s not going to work. Look … Taking a step backwardRead more

With the swingarm clamped in place, I briefly played around with the rear axle. All sorts of finagling will be needed to align the rear rim and rear sprocket, both of which … Rear axle platesRead more

I’m starting to get excited; I actually mocked up the swingarm position this morning, if only temporarily. I decided to divorce the pivot bolt function from the frame cross-bolt and rear engine … Swingarm mock-upRead more