In Reply to: Re: Danuser post hole digger questions posted by Den N Ms on May 06, 2017 at 18:23:34:
I disagree that you need them for a phd. I've drilled a few holes and never needed them.
I think sway bars are getting to be a little like having an ORC in that people think they need them for everything. That's why you see guys fret about having them on every pto driven implement. I agree you need an orc on a rotary cutter but it's a myth to think you need one on a finish mower, phd, pto driven hay rake, etc.
Anyway, it seems like having sway bars has become de rigueur in the tractor world. But I dont care for them much.
Take an N that's most of 10' long and couple it to a brush mower that's 5-6' long and you have fairly a sizeable rig. Use sway bars that makes the two units unable to flex at all and you're driving a long, rigid, behemoth around.
I much prefer to have some flex between the two units so the rear end of the mower doesn't swing so wide on turns.
On a phd, say drilling a 12" hole for an 8" post, I can't see how having your hole a few degrees out of plumb matters anyway. And sway bars won't help with getting a plumb hole on both the X and Y planes.
Though sway bars have been around for a long time I think their use is mostly a modern thing, cause Mike and Willie said it on the internet so it must be true.
Ultimately though, you may use them if you like them and get no argument from me. But I hope we don't make them "necessary" for Everything like we've done to ORCs.