Need to slow down PTO rpm

[PhantomOfHeat]

Are you just trying to get rid of the wood? If so I would dig a trench pile the sticks in there and cover with the dirt from the trench plant into it. The taller the mound the better as you can harvest from it without having to bend over. Look up Hugelkultur.

If you are going to use the wood to heat look up Rocket Mass Heater. If using to cook look up Rocket stove, there are designs to build an oven with this design.

 

[ericm979]

Yes it has. Minimum speed = 472 rpm. Too much for what i had in mind. For the rest i truly love this machine

That's with the engine at PTO speed. If you run the engine at a slower speed the PTO goes slower. I'll use my tractor for an example. PTO RPM is 2500, which has the PTO turning 540 rpm. Engine idle speed is 1000 rpm. That would have the PTO turning at 216 rpm. You probably don't need full power to run that device. I'm guessing the power available at idle RPM or close to it would be fine. Your device should have some flywheel weight to it to help it drive through the wood.

 

[marcelPL]

All because a chainsaw is just so inefficient. Not to mention noisy and a pain to oil and fuel.

Did you have a bad day? Or just had a feeling to urinate on something?

Yes I have (by now) close to 1500 little trees (oak and plumb) to take out and make disappear, hopefully in a useful way.

So for me it makes sense to look for an efficient alternative. Sorry if I have wasted any of your precious time...

 

[CalG]

Did you have a bad day? Or just had a feeling to urinate on something?

Yes I have (by now) close to 1500 little trees (oak and plumb) to take out and make disappear, hopefully in a useful way.

So for me it makes sense to look for an efficient alternative. Sorry if I have wasted any of your precious time...

Chain saws are terrible for the small stuff. and dangerous as well. Those small diameter pieces are just a pain. I cut up a bunch this forenoon, and it was tough work for little good except it's part of cleaning up a big maple tree.
I would use a drum chunker to process bio mass fuel wood if I had a burner for it. I can imagine any coal grate burner would do, but such small fireboxes for most home units.
Instead, I cut the stove wood to fit one of the two wood burning stoves, (log burning), and chip the small stuff for mulch. I'm running out of need for mulch.

I can imagine the combination of crush and shear opens up the bark somewhat and speeds drying. That would be good. Handling fuel wood in a mesh bag or crate makes a lot of sense as well.

I've got the rear differential out of an Audi IRS. It's a nice compact unit. 3.9:1 or so. I might put a chunker on my project list.... right after the winch ;-)

Here in the US, someone who had to "get rid" of 1500 smallish trees would be encouraged to purchase, rent or hire out a wood chipper. About as dangerous a machine as there is, and results in no useful fuel wood.

More power to the effort!

 

[Industrial Toys]

Thank You.

 

[Industrial Toys]

Thank You.

While it is true, I find a great many things, often popular (monkey see, monkey do) things, worthy of urinating on, I was actually supporting any alternative to using a pesky chain saw.

As for your question. If economy was an issue, I would most certainly get a scrapped automotive manual transmission. Cheap, reliable and offers variable speed options.

 

[LouNY]

An old truck transmission with a granny gear would get you a 6:1 reduction in first gear.

 

[4570Man]

An old truck transmission with a granny gear would get you a 6:1 reduction in first gear.

I built a lathe like that once. It didn’t have a clutch. You just shut it off to change gears.

 

[CalG]

An old truck transmission with a granny gear would get you a 6:1 reduction in first gear.

What load bearing elements does a manual transmission have to accommodate thrust loads?
I've not seen any with tapered rollers on the output....

A jack shaft would add to the part count for this application.

 

[Industrial Toys]

I would not put the business end of the machine directly on the tranny. I think that goes without saying. But my particular tranny suggestion, was strictly an arm chair suggestion, lacking any experience at all in the matter.