Finding one Hardy Spicer joint on the Ulster rep a bit lumpy, I purchased two new spiders from one of the cherished suppliers. As I had reported earlier, the old races were a very tight fit, so I eased the openings to allow an easy press fit. At the GB end, everything went together smoothly. At the rear end, assembly on the prop yoke seized the spider. I checked the old spider and races against the new one. The old one, a GKN, measured 2.424 across the races, the new one measures 2.435 across the races. How can I fix this? Had thought about trying to widen the yoke slightly, but that would mean the holes would not be parallel. The keepers only barely fit. Machining the ends of the races does not look like an easy or effective solution. Why the difference and how do I solve this? Should I go back to a fabric and cardan block?
Erich in Seattle
Erich in Seattle