So I got to taking my 420 apart to replace the hydro pump seal, and a neighbor asked me a question I hadn't thought f before. When I built my tractor I didn't buy the OEM driveshaft, since I wasn't using an Onan. I just needed the stub shaft from Honda, and the U-joint on the other end (on the pump). I used a solid piece of 1" steel bar to connect the two.
He asked if I thought the solid bar would be too heavy, and pull down on the pump shaft and wear out the seal faster. Thoughts? I hadn't even considered that, but since the pump side is splined and not like a typical driveshaft it kinda makes sense. I am now looking to have a new one built with tubing instead, since the driveshaft doesn't need to be as heavy as I made it. I can't seem to find anyone that will take the existing driveshaft, and make the same length with tubing and weld it back up. All the places near me are all contract fabricators or do large quantity government fabrication.