BurningIsLove said:Yeah, I'm with Goose and the other vertical mode fans on this one. Lifting 100+ lb rounds up onto the horizontal beam was a lot more labor and strain on the back than rolling a round onto the ground-level platform in vertical mode. Both my father and I have back problems, and we find that if we squat in the correct position, then the long term back discomfort is much smaller than lifting rounds up repeatedly.
I prefer to sit, but same deal...
Im also not sure I understand the issue people (reaperman and his dealer) are talking about using a 4-way in vertical mode? I understand the point about the split size, e.g. the round size is not always going to yield 4 perfect sized splits and that re-splitting one or two too-large ones would be difficult w/ a 4 way wedge. I just do those by hand w/ a splitting maul as I enjoy splitting the ole fashioned way. Can you please explain why this is mechanically a bad idea?
Playing devils advocate for the moment, as I'm not a fan of the multi-way wedges, there are two problems mentioned that are more likely with multi-wedges, especially if they are mounted on the moving ram, as opposed to the fixed stop (with the pusher on the ram) Neither is as much of a concern with a single wedge mounted perpendicular to the beam. I will speak mostly to 4-way wedges, but the same thing applies to larger ones
1. With a single wedge the splits just fall to either side, no problem. With a multi wedge, the two splits closest to the beam are trapped between the beam and the moving wedge. If they are big splits, and especially if they are ones where the log wants to split on an angle so that the split gets bigger as you go down, the split is going to potentially be jammed into the beam by the moving wedge. If the base wedge is wide enough to push the splits off the beam this might not be a big problem.
2. As many rounds don't want to split straight, or are harder on one side than the other, they can put a lot more torque on the piston of the hydraulic cylinder, trying to either rotate it, or make it flex. Neither is good for the seals, though again, it's not real clear how big a problem this is on a properly designed unit.
For example, I have a 9HP Robin/24 ton hydraulic system on mine. A tiny fraction (like 1%) of rounds have even made the engine change pitch, and those were super large, knotted & gnarled rounds that would normally have taken dynamite to split. Im having trouble visualizing what you mean by the log being wedged into the I-beam? The ram (2-way or 4-way) runs parallel to the I-beam, so there is no force exerted on the I-Beam by the ram or by gravity.
The ram runs parallel to the beam, but the wedges are tapered, and two of the splits are going to be pushed towards the beam (or table) by the wedge "wings" that are running parallel to the beam rather than perpendicular like the two-way wedge does.
Gooserider