17 ton wood splitter??

[Berserker]

I emailed them for a manual. It is not listed on their website

All I see in ad are 14 gpm and 208cc.

I was surprised not to find a manual.

 

[david_fillman]

I emailed them for a manual. It is not listed on their website

All I see in ad are 14 gpm and 208cc.

I was surprised not to find a manual.

Here is the thread that got me curious about the tonnage ratings.

https://www.arboristsite.com/thread...rating-are-they-on-crack-or-just-lying.35588/

I recently installed a new 16 GPM pump on my ancient Simpsons Sears splitter. It has the pressure relief set at 2,250 PSI. The original Cross valve relief is set at 2,000 PSI. I stuck a gauge on the cylinder and it never goes above 2,000 PSI so the valve is controlling the pressure.

My dad stuck a 8 HP Briggs engine on this back in the 1970s. With the new pump this old 9-1/2 ton splitter outruns his new 26 ton splitter by at least a factor of 2.

 

[Berserker]

I would not be surprised companies mislead their stats. Dunno. But it splits wood

 

[david_fillman]

Years ago I bought a Northern Hydraulics (Tool?) wagon rated for 1,000 pounds. First time I put a 650 pound Chrysler 440 engine on it all 4 axles bent. I was able to repair it but I would say it is good for 300 Pounds.

 

[david_fillman]

I emailed them for a manual. It is not listed on their website

All I see in ad are 14 gpm and 208cc.

I was surprised not to find a manual.

The add shows you have a YTL-015-318 log splitter.

Below is a link to YTL's manuals. I don't see your exact model but some look close.

https://www.ytlinternational.com/log-splitter-manuals

 

[Doug]

Here is the thread that got me curious about the tonnage ratings.

https://www.arboristsite.com/thread...rating-are-they-on-crack-or-just-lying.35588/

I recently installed a new 16 GPM pump on my ancient Simpsons Sears splitter. It has the pressure relief set at 2,250 PSI. The original Cross valve relief is set at 2,000 PSI. I stuck a gauge on the cylinder and it never goes above 2,000 PSI so the valve is controlling the pressure.

My dad stuck a 8 HP Briggs engine on this back in the 1970s. With the new pump this old 9-1/2 ton splitter outruns his new 26 ton splitter by at least a factor of 2.

View attachment 1209945

Actually it's not the valve that controls the pressure, it's the load. Small wood, easy push = low to medium pressure. Relief pressure is never reached until the ram is completely stalled. Gauge test the relief setting with the ram dead-headed on the back-stroke with at least 3/4 throttle. Or full throttle.
Eight horse power making 2000 psi at 16 gpm? I don't think so.
Mathematically it takes about 1 & 1/4 engine horse power per gpm to be able to achieve 2000 psi.
To make 2000 psi an 8hp engine should be paired to a 6.4 gpm pump. https://www.calcunation.com/calculator/hydraulic-horsepower.php

To make 2250 psi at 16 gpm requires 21 horse power.
Too big of a pump = lots of travel speed, but not enough force.
Too small of a pump = maximum force, but slow travel speed.

 

[david_fillman]

Actually it's not the valve that controls the pressure, it's the load. Small wood, easy push = low to medium pressure. Relief pressure is never reached until the ram is completely stalled. Gauge test the relief setting with the ram dead-headed on the back-stroke with at least 3/4 throttle. Or full throttle.
Eight horse power making 2000 psi at 16 gpm? I don't think so.
Mathematically it takes about 1 & 1/4 engine horse power per gpm to be able to achieve 2000 psi.
To make 2000 psi an 8hp engine should be paired to a 6.4 gpm pump. https://www.calcunation.com/calculator/hydraulic-horsepower.php

To make 2250 psi at 16 gpm requires 21 horse power.
Too big of a pump = lots of travel speed, but not enough force.
Too small of a pump = maximum force, but slow travel speed.
View attachment 1210044

I should have said relief pressure. The gauge goes up to 300 to 500 PSI when the ram hits the log then drops back down to zero for the rest of the stroke.

I bought a 2 stage pump:

First Stage: 13 GPM @ 650 PSI
Second Stage: 3.5 GPM @ 2500 PSI

It only ever hits 2,000 PSI when the ram stalls. That has not happened since I started splitting very straight Ash. It goes right through 32" diameter by 24" long Ash.

Thanks for the formula link!!!

 

[Doug]

I bought a 2 stage pump:

First Stage: 13 GPM @ 650 PSI
Second Stage: 3.5 GPM @ 2500 PSI

It only ever hits 2,000 PSI when the ram stalls. That has not happened since I started splitting very straight Ash. It goes right through 32" diameter by 24" long Ash.

Thanks for the formula link!!!

Awesome! Two-stage is absolutely the best of both worlds !

 

[Berserker]

The add shows you have a YTL-015-318 log splitter.

Below is a link to YTL's manuals. I don't see your exact model but some look close.

https://www.ytlinternational.com/log-splitter-manuals

They sent me pdfs right away.

Manual says 3700 psi.

The one I bought was from front of store, with bag over engine. Little bit of rust in spots. but probably worth it, to not have to put together

 

[david_fillman]

They sent me pdfs right away.

Manual says 3700 psi.

The one I bought was from front of store, with bag over engine. Little bit of rust in spots. but probably worth it, to not have to put together

Awesome!!!

That answers how you can get 17 tons out of a 3-1/2" cylinder.

 

[Doug]

Awesome!!!

That answers how you can get 17 tons out of a 3-1/2" cylinder.

IF I had looked closer I might have noticed that you are in Limerick Pn. Please correct me if I am wrong, but isn't that the home of Dave Fillman the Rokon Guru?

 

[david_fillman]

IF I had looked closer I might have noticed that you are in Limerick Pn. Please correct me if I am wrong, but isn't that the home of Dave Fillman the Rokon Guru?

That's me.

 

[Doug]

That's me.

I really enjoyed browsing that forum. It's a real shame it's gone.

 

[david_fillman]

I really enjoyed browsing that forum. It's a real shame it's gone.

The Rokonworld Message Board moved to Face Plant.

https://www.facebook.com/groups/145824455583343

 

[Doug]

The Rokonworld Message Board moved to Face Plant.

https://www.facebook.com/groups/145824455583343

Found it. Thanks for the link