Gear Box

RedRocker · Jul 15, 2005

Where might I find a 4:1 PTO gearbox? Not having much luck on the web.

jinman · Jul 15, 2005

( Where might I find a 4:1 PTO gearbox? Not having much luck on the web. )

Don't know for sure, but isn't that about the reduction on a post-hole digger gearbox? Do you want to reduce the PTO rpm or increase it by 4? That's the only thing I can think of off the top of my head.

RedRocker · Jul 15, 2005

Hey Jim, I want to increase it by 4 to turn an alternator for my welder.

mitchell574 · Jul 16, 2005

Are you looking for new or used? If used look for a old peanut shaker preferable a paulk. I have one in treasure pile but you are a long way for here. If you want it come get it. Ill help you take it off.

RedRocker · Jul 16, 2005

Now that's a tempting offer, maybe I can enlist a friend closer to you, what's the nearest town?

Soundguy · Jul 17, 2005

I'd look for more like a 6.x:1 .. like a pto generator on a 3600rpm head might use... Common enough gearbox..

Soundguy

milkman · Jul 17, 2005

I've often wondered if you could take a PHD gearbox and power the auger side and use the PTO side to power a generator. Maybe the gearbox couldn't take the speed???

jinman · Jul 17, 2005

( I've often wondered if you could take a PHD gearbox and power the auger side and use the PTO side to power a generator. Maybe the gearbox couldn't take the speed??? )

After making that suggestion, I did a little more research and found that most PHD gearboxes are a little over 3:1. That's not high enough for RedRocker's application anyhow. I think you might be right though. There might not be enough oil to cool the gears if you ran that gearbox backwards. For short bursts, it would probably be okay, but for a continual running generator/alternator/welder application, I'm not sure.