Φ Bultakenstein [Aborted]

’71–’73 A65 Export tank? I don’t think it’s the worst idea I’ve had. I tried to scale this accurately in Photoshop and I think this could work well. This metal Bultaco Mercurio … Other tank possibilitiesRead more

I’m giving up on the plastic Can-Am Qualifier fuel tank. I watched every YouTube instructional video, read all the vintage MX forums. I shaved. I sanded. I used heat and the recommended … No tank you, Can-AmRead more

Shopping for seats, and trying to figure out which will work with my rear loop. I tried to scale and superimpose the frame tubes into the image as accurately as I could. … Seat shoppingRead more

Before work this morning, I was able to sit on it, bounce up and down on the suspension, even roll it down the driveway and do a couple of S-turns. It behaved … It’s a rolling chassis!Read more

One of the big challenges of this project has been trying to accurately locate of the rear wheel. Fortunately, as far as the frame itself goes, the only truly critical relationships are … Rear wheel alignmentRead more

Here’s the swingarm pivot, completed! The rear engine bosses will attach to these crosstubes; if you look carefully at either end, you can see the rubber mounting blocks Suzuki used on their … Swingarm pivot completeRead more

I got the 6mm thick outer spacers made up this morning. The engine mounting plates need to be spaced in because of two socket-head screws on the left, as well as to … Swingarm & motor mount fabricationRead more

I’ve got the frame bolted into the jig using the additional fittings, and I’m working on final alignment of the twin-shock swingarm.

With the Honda CL125S Resto-mod that had been taking all my time and attention finally out of my workshop for good, I’ve turned my attention back to this unholy collection of mismatched … Bultakenstein resumesRead more

After sorting out some details regarding engine mounts, I ordered a few bits of hardware (metric flathead allen bolts and 90° countersink end mills) needed to make it happen. While waiting for … Rear damper choicesRead more