RPM's

[nebraska_dale]

If you guys are out clearing snow in cold weather (0-25 F) what rpm do you run your machine? I have settled on around 2100-2500, just because it feels like the machine likes it.

 

[skidsteer.ca]

Generally around 2500-2600 unless I'm stump grinding or blowing snow where I need max hydraulic hp.
Some times as low as 2000 if I putting around doing something that does not require too much engine hp. New Holland book say always full speed but I just can't see the need personally.
Ken

 

[wickmar]

That's exactly the range I run 90% of the time. Rarely ran either the 565 or 160 at 2800 except when I needed maximum boom performance.

 

[xtreem3d]

That's exactly the range I run 90% of the time. Rarely ran either the 565 or 160 at 2800 except when I needed maximum boom performance.

That's interesting Ken...i didn't know that........i run 7 NH skids pushing snow and have always told my guys to run between 1500-1800 RPM. It seems like they are screaming above 2100 especially in an enclosed cab
Steve

 

[irvi00]

That's interesting Ken...i didn't know that........i run 7 NH skids pushing snow and have always told my guys to run between 1500-1800 RPM. It seems like they are screaming above 2100 especially in an enclosed cab
Steve

Question, why are you guys running your machines at less than WOT? Is it for fuel efficiency? I have always ran both of mine wide open like the book says. I have been told by other machine owners that running at anything less could cause pump damage because the pumps are designed to deliver their power at this RPM range. I have tried operating at less throttle but it always seems the pumps are struggling and the machine is just too slow for me.

 

[skidsteer.ca]

That's interesting Ken...i didn't know that........i run 7 NH skids pushing snow and have always told my guys to run between 1500-1800 RPM. It seems like they are screaming above 2100 especially in an enclosed cab
Steve

Steve
This is for the L/LX 565/ 665 and LS 160 and 170, they use the Japanese built N844 (T) engine and run up to 3100 rpm. Where the larger machines have domestic built engines (I believe) and have around a 2300 high idle rpm. So for these machines 1500 to 1800 is comparable to 2400 to 2600 on the N844 engines.
Ken

 

[Earthwerks Unlimited]

Steve
This is for the L/LX 565/ 665 and LS 160 and 170, they use the Japanese built N844 (T) engine and run up to 3100 rpm. Where the larger machines have domestic built engines (I believe) and have around a 2300 high idle rpm. So for these machines 1500 to 1800 is comparable to 2400 to 2600 on the N844 engines.
Ken

Though the owners manual does say WOT, I don't always do that if I'm just putzing around. I've even had customers tell me there is no reason for WOT as if I was showing off or something.

 

[toomanymachines]

Though the owners manual does say WOT, I don't always do that if I'm just putzing around. I've even had customers tell me there is no reason for WOT as if I was showing off or something.

I would assume that the engine is only going to last soo many strokes. the faster you rev it the sooner they are used up. I always use just enough rpm to provide the required hp or spped to do what I need to do. I frequently idle it down when doing some real fine work. Lifting something with a chain or around somone. I want my machines to last as long as possible. I think as long as you have decent oil pressure slower rpm will do no harm. I run my ls170 at around the 2k mark.. and my Hydra Mac slower.