warm up

[MossyDell]

Right, 5030. But I think max rpm feels like it's close. Wish someone with a B2601 would tell me what wide open is. It runs well at the rated rpm of 2,800 but not sure they've allowed much after that.

 

[5030]

I don't know, mine are much larger. My pto rpm is about 500 below wide open (governed).

 

[TMGT]

Right, 5030. But I think max rpm feels like it's close. Wish someone with a B2601 would tell me what wide open is. It runs well at the rated rpm of 2,800 but not sure they've allowed much after that.

Its only slightly more then 2800, maybe 2900-3000 and that can vary due to how the linkage is set up.
The pto rated rpm is just past peak tq on the downward slope of the curve, that way as the load increases and tries to lower the rpm the torque will be rising to help resist the load.

 

[MHarryE]

Right, 5030. But I think max rpm feels like it's close. Wish someone with a B2601 would tell me what wide open is. It runs well at the rated rpm of 2,800 but not sure they've allowed much after that.

With a mechanical governor, wide open throttle is usually 5% to 7% over rated rpm. This is the droop needed for a manual governor to work. So you will have a power curve that is zero hp at wide open no load. Start loading and power will increase quickly to rated hp. My M7 for instance is rated at 2200, power increases to max at 2100, decreases slightly to 2000 PTO speed where it is also most efficient (per Nebraska test). My L6060 on the other hand has max power at 2600 rated and drops off after that (per Kubota’s engine power curve).

 

[Larry Caldwell]

The thing they rarely mention in the manual is never lug a diesel. I learned that driving truck. Lug a diesel and you will blow the injectors out of it and bend rods.

A warm-up and cool-down are always good ideas, but I combine them with travel time to and from the field in a lower gear before I actually start to work the engine. If the engine is starting to overheat, I will run at high idle before I shut down to clean the radiator, but have to admit that if it's still running in normal operating range I may only idle a couple minutes before shutdown.