To answer the question about speed, the
BX1500 (and most other BXs, I believe, but I'm not sure) have a pump capable of 5.5gpm, according to the workshop manual. I'm assuming that figure is at maximum rpm.
However, the same manual lists the hydraulic block output as 3.7 gpm, which is what the loader is plumbed to.
You'll notice that the splitter recommends 11gpm, so you're not getting 1/2 speed out of it.
This is a choice you have to make, I guess. Some on here wouldn't put up with it, and I wouldn't either if I split 10s of cords a year. But I don't.
You can run the engine any speed you want of course, but that directly correlates to how fast the splitter will go, since gpm are what controls speed.
As noted on some other thread, most log splitters use two-stage pumps, which allows the unloaded cylinder to run much faster, but with less power. Then, they slow down while they're in the wood. What you'll find is that when in the wood, the splitter I have and the two-stage pump dedicated splitter run about the same speed. It's the return stroke that's of interest.
But, as I said in my previous post, I found that the return stroke is a fine time to throw the split wood into the wagon and pick up the next piece - at which point the splitter is ready. I can work at a nice steady pace - no waiting, but not hustling, either. Maybe I'm just slow.
A solution is to get a PTO hydraulic pump, tank, and accessories. Then, build a PTO-based hydraulic system that could be hooked to anything.
If you buy new, you'll be at about the same price as a dedicated engine splitter. I'm sure it could be scrounged for much less. Until you find a second use for the hydraulic system - then you'd be way ahead on $.
Or, you could use it as justification for a bigger tractor, I suppose...
Another small thing - it's heavy. And long. Which means front balast is a must. I'm sure it's a hair better on the slightly longer and heavier BX2xxx models. I had my FEL off at one point, and with the splitter off the ground, I could tap the end of the splitter with my hand, and the front wheels came up. Driving like that wasn't really possible. Adding the FEL back on makes it quite stable, though.