Oldtimer
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Another real good idea!
Not Impressed.
- Thread starter TJ-Bill
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Another real good idea!
Agreed, something else to check.....
:msp_rolleyes::hmm3grin2orange::hmm3grin2orange:
Swamp Yankee
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Agree with checking the coupling
Be sure you didn't pull a SY and forget to put in the key.
This is another thought. The Honda engine you had put out most of its power between 3000 and 3600 rpm. Torque maxed out at 2500 rpm.
Honda Engines - GX340 4-Stroke Engine
Search as I might, I could not find any performance specs or curves on the Lifan small engines. They may operate at a slower rpm or not put out the same HP in the same rpm range as the Honda. The engine speed is what determines the pump's gpm output. Does the Owners Manual show any performance data or curves?
Remember that pump was sized to run with the Honda's performance curve. The Lifan may or may not be close to those operating parameters.
Hope all works out
Take Care
Be sure you didn't pull a SY and forget to put in the key.
This is another thought. The Honda engine you had put out most of its power between 3000 and 3600 rpm. Torque maxed out at 2500 rpm.
Honda Engines - GX340 4-Stroke Engine
Search as I might, I could not find any performance specs or curves on the Lifan small engines. They may operate at a slower rpm or not put out the same HP in the same rpm range as the Honda. The engine speed is what determines the pump's gpm output. Does the Owners Manual show any performance data or curves?
Remember that pump was sized to run with the Honda's performance curve. The Lifan may or may not be close to those operating parameters.
Hope all works out
Take Care
Oldtimer
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I thought he put that Honda on there himself?
If the new engine can hit 2200 RPM, then it should work fine.
If the new engine can hit 2200 RPM, then it should work fine.
Dunno if this has been pointed out already but a bit of thought shows:
If:
a. The pump is kicking down and:
b. The motor is not stalling
you have a hydraulic problem, not a motor problem. The motor does not control how or when pressure is developed (pressure only builds when there is resistance in the circuit). The pump goes into second stage at, or near, max pressure in the high speed portion. That will happen with a brand new 40 hp motor or a clapped out one lunger, as long as neither stalls.
The only control the motor has over cycle time (again if it isn't stalling) is the rpm it is turning.
Harry K
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TMFARM 2009
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yep..... could be a hose collapsing or something restricting the valve or a junk pump..
TJ-Bill
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I couldn't find any specs on the Lifan either, I'm going to call the dealer tomorrow and see if they can get them.
Today I checked and the output shaft does spin clockwise. I took the valve apart and all seems to be fine with that. I also took the hi pressure side off the pump and I'm definitely getting some GPM. So I put it all back together and tried again.
I've come to the conclusion that the engines have to make power at different RPM. At 1/2-3/4 throttle it was stopping the ram and only reading about 500 lbs on the pressure gauge. At full throttle it splits just like it did with the Honda, I tested out a couple pieces on Maple and Beech and everything seemed to be fine. I'm not crazy about running this thing at FT but if that's what I have to then that's the way it'll be. On thing I noticed is that the Lifan is much quieter then the Honda was, I thought maybe because it was new but maybe it's because it's not running as hard.
I'll let you know what the dealer says.
TreeClimber57
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Well look at it this way:
a) either not enough rpm
b) or not enough power
That is if engine issue.
If b) - not enough power then engine would falter, sputter and stall under load. If not doing that then it is NOT a power issue.. at least not at the specified rpm. So.. that being the case.. need to ensure rpm is adequate and if not what needs to be done to get it up there.
TreeClimber57
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It might very well be that the engine is running at different rpm at various throttle points. The throttle is likley only a manual lever. So you could well be off a few hundred rpm at half throttle on one over the other. This could cause power issues, or lack thereof.. and definately would cause flow issues in what pump was producing.
TreeClimber57
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Agreed.. but one would think.. maybe.. just maybe.. if these Lifan engines were made as Honda knock offs.. obviously to sell in place of Honda engines.. you would think they would try to copy the power curves fairly closely.
True, but remember there could me patents to get around and if honda has their design under patent, enought thiings need to change before the Lifan is allowed to excist. Maybe the differant powerband is the result of an internal design change?
TreeClimber57
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Poissibly.. but I did not think that word had made it into the chinese vocabulary yet.
Hahahaahahaha that's funny right there
KsWoodsMan
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Correct me if I am wrong but did I read 500 PSI when the ram stalled ? And the engine never started to grunt ?
Check the internal seals in your ram/piston. I think you will be surprised to find them leaking past.
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Streblerm
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I wouldn't worry about running the engine full throttle. It was designed to run at that RPM and really only at that RPM. We're talking 3600 RPMs here, not 10,000. Most pumps are designed to be run at that RPM as well because that is the RPM small engines run.
I have said it before and so have others. If the engine isn't stalling when a load is put on it with the hydraulics then it is not underpowered for the task. There is something up with the hydraulics. The engine either will or won't spin the pump to create pressure under a load. There is no clutch on a hydraulic pump so it will either work or stall the engine. If the ram moves but lacks power you either need more RPMs or the pressure is bleeding off somewhere. in the system.
Here's another thought. I read that you thought the new engine is quieter. Maybe the throttle position isn't the same as your old honda and you are just turning less RPMS than you were before.
To repeat what I and others have said and I hope it gets peoples attention.
The problem is _not_ with the motor if it is not stalling. If it doesn't stall the only effect it _can_ have on operation is cycle time due to rpm variations.
The problem is all in the hydraulic system somewhere.
Harry K
The problem is _not_ with the motor if it is not stalling. If it doesn't stall the only effect it _can_ have on operation is cycle time due to rpm variations.
The problem is all in the hydraulic system somewhere.
Harry K
WidowMaker
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Seems he's got his mind make up to get a new Honda, regardless of what the fact may be.
TJ-Bill
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I'm going to start splitting my wood for next year soon, I'm going to run the engine wide open and if it doesn't preform I'll be taking apart the Ram and checking the seals.
Thanks for the input guys~
Bill
Thanks for the input guys~
Bill
here's a way-out consideration. when using a speeco 22T splitter i noticed that the ram was moving slower on the down stroke and barely removing on the rebound. no apparent leaks but still checked the hydraulic fluid and it was full. after some looking i discovered that the plate holding the activating lever to the housing had lost one of the mounting bolts and the other was loose. found where the one had fallen to the ground. replaced and tightened both and voila! function restored.
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