How To Operate a Log Splitter

[trigger_andy]

Just now, frammo said:

Not sure on the 2 stage pumps but none of your hydraulics eg hose bores are capable of 90 litres per minute ....mine runs at 60 and the suction hose is 1” when it should really be 1 1/2” 

What's the Cylinder ID? That and a maximum pressure output of say 2500psi-3000psi is the real answer here. 

[trigger_andy]

Let me know what pump you have sometime and will dig out proper chart for it 🤙

 

 

I’m sure this is what I bought for my gx390 splitter I built.

 

16 GPM Hydraulic 2 Stage Log Splitter Pump | Log Splitter Pumps | Flowfit

WWW.FLOWFITONLINE.COM

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This 16 GPM Hydraulic 2 Stage Log Splitter Pump Is From Our Range Of Hi-Lo Log Splitter Pumps. High Quality Log Splitter Components Available. On Sale Now!

 

It’s the 11 gal/min on my 22t Rock Splitter. I’ll have to measure up the piston on it when I’m home next.

 

11 GPM Two Stage Hydraulic Gear Pump | Log Splitter Pumps | Flowfit

WWW.FLOWFITONLINE.COM

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This 11 GPM Two Stage Hydraulic Gear Pump Is From Our Range Of Hi-Lo Log Splitter Pumps. High Quality Log Splitter Components Available. On Sale Now!

[trigger_andy]

7 minutes ago, frammo said:

Gonna drink me coffee first ... morning 🤣Ps lied out mine it’s 42hp 

The engine is 42hp? Seems needlessly excessive? 

[MattyF]

Here is a better video
 
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I never really got the whole Lancaster bomber thing , whilst I love the sound and seeing a spitfire and I can really appreciate the sacrifices the air crews made in those bombers , there primary use was bombing city’s with civilians in.. They just don’t do anything for me , plus they are a really ugly plane unlike say a B 17.

[Billhook]

I  think that you can become too focussed on tonnage when there maybe other factors such as the design of the knife, or even making a box wedge, .also the length and diameter of the pipework and operating valves.

I have two splitters, one vertical built by a local blacksmith with a 5 inch  diameter ram from a digger which is powered by the JCB Fastrac 2170 which pump is rated at over 90 litres.minute.  He used a tine from a loading shovel as the splitter but mounted on the end of the ram.  This is slow and steady but will split anything.

My box wedge on the Matbro TS270 again has over 90 litres/minute and has an arrow shaped blade to put a lot of pressure on the initial opening split which is particularly good for recalcitrant  Elm.  But it is still quite slow and steady so in both cases horsepower seems irrelevant with the JCB at 170 hp and the Matbro at 120 hp both at 3000psi.  I think also that pump output is not the main factor here but the length and diameter of the pipework and the size of the various valves and controls.

[Billhook]

4 minutes ago, MattyF said:

I never really got the whole Lancaster bomber thing , whilst I love the sound and seeing a spitfire and I can really appreciate the sacrifices the air crews made in those bombers , there primary use was bombing city’s with civilians in.. They just don’t do anything for me , plus they are a really ugly plane unlike say a B 17.

B17s, B29s, Heinkels , Wellingtons, Mosquitos and many others, they all bombed cities they all killed civilians.  The Spitfires and Mustangs were killing machines but to see them all now out of war being flown at air shows to remind us of the futility of war but also to marvel at the engineering and design of everything brought together in such a short time, aeronautics, engine performance, radar.

Beauty is in the eye of the beholder but the Lanc brings a tear to my eye each time it comes over.

[Billhook]

10 hours ago, frammo said:

Dont ,those engines rock ... if only my saws would sound same ...used to do work at Davidstow cheese factory ... know the airstrip well 🤙

My Mother was a WREN at Treligga and met my father in the King Arthur's Arms Hotel at Tintagel in 1944. They were married in January 1945 and stayed that way for 62 years.  I went recently to the Davidstow  war museum and was surprised to see not only my father's  records but also photos of my Mother training fire engine and ambulance as well as target marking for Typhoons rocket practice ready for D Day.

[difflock]

9 hours ago, trigger_andy said:

I thought it was pressure x area = force? Hard to see but that cylinder cant be bigger than 5" can it? Does your hydraulic pump not have a maximum pressure rating? So between the pressure rating and the OD of the piston you'll have your tonnage, no?  Id have thought the 25hp was irrelevant in force once the maximum operating pressure was achieved and would only benefit cycle times, s if a 6.5hp engine couldachievee say 2500psi it would have the same force, but be slower to operate?  

 

I can imagine the force required to push a gnarly log through a 6 way must be quite significant as well.  

Well 5 HP, will easily generate 25 tonne force(and it should really be expressed in Newtons), but slowly.

Simplistically speaking 50HP will generate the same 25Tonne force, but the ram will be travelling 10 times as fast.

[trigger_andy]

Just now, difflock said:

Well 5 HP, will easily generate 25 tonne force(and it should really be expressed in Newtons), but slowly.

Simplistically speaking 50HP will generate the same 25Tonne force, but the ram will be travelling 10 times as fast.

 

Thats my thinking as well. But with the 2 stage pumps we see these days cycling times are much better even with low HP motors. Whilst a 10 second cycle time with my 6.5hp motor is not amazingly quick its fast enough for me to split my log, push it off the table, grab the next log and have the Ram back in position for the next one. 

[trigger_andy]

1 hour ago, frammo said:

Just calculated mine at 200bar generates 15.7 tonnes...at 250bar generates 19.6 tonnes orKn if we are gonna be fussy .using group 3 pump and power consumption is close to 40hp ..think will stick to my figures 🤣🤣🤣

Yeh, 15 to 20 tons sound about right looking at that size of Ram and of course depending on what pressure your system is running at. 

 

Just think, you could run it just as easily on a gx390 and save a fortune in fuel.