Snowblowing RPM

[rScotty]

It depends on the snow. I have a 3 point mounted blower so I usually use the 900 rpm gearing on my PTO and set the engine at 1750 to get 540 rpm at the blower. If the snow is really deep and/or wet I use the 540 rpm gearing and run the engine up to 2550 for more power.

That makes sense to me. It sure is nice to have HST isn't it? After having the old fashioned gear driven tractors all my life it is a real treat to have a HST machine where the driving is separated from the PTO work. With HST we can run the engine as fast or slow as it needs to work the PTO without the engine speed affecting the way the tractor drives at all. It's a whole new way of running a tractor.
And the autothrottle makes it even better. Now I can just putz along at an idle enjoying the work and daydreaming. And feeling secure in the knowledge that if the machine needs more throttle or RPM it will make it happen automatically and without any input from me. All I have to do is steer. Now if only it came with a cab, a reclining seat, and dual drink holders.....
rScotty

 

[ericher69]

That makes sense to me. It sure is nice to have HST isn't it? After having the old fashioned gear driven tractors all my life it is a real treat to have a HST machine where the driving is separated from the PTO work. With HST we can run the engine as fast or slow as it needs to work the PTO without the engine speed affecting the way the tractor drives at all. It's a whole new way of running a tractor. And the autothrottle makes it even better. Now I can just putz along at an idle enjoying the work and daydreaming. And feeling secure in the knowledge that if the machine needs more throttle or RPM it will make it happen automatically and without any input from me. All I have to do is steer. Now if only it came with a cab, a reclining seat, and dual drink holders..... rScotty

Pto speed on my b2920! The reason is two fold

Allows HST to operate properly
Torque curve is highest just off Pto speed so that when rpm's start dropping it hits its highest torque rating bumping rpm's back up.

Makes a huge difference in ability to clear snow quickly and not have it pile up in front of the blower.

Sent from my iPhone 5s 64Gb using TractorByNet

 

[buickanddeere]

Worrying about nothing. Pull the throttle all the way and blow snow.

 

[Looking4new]

That makes sense to me. It sure is nice to have HST isn't it? After having the old fashioned gear driven tractors all my life it is a real treat to have a HST machine where the driving is separated from the PTO work. With HST we can run the engine as fast or slow as it needs to work the PTO without the engine speed affecting the way the tractor drives at all. It's a whole new way of running a tractor.
And the autothrottle makes it even better. Now I can just putz along at an idle enjoying the work and daydreaming. And feeling secure in the knowledge that if the machine needs more throttle or RPM it will make it happen automatically and without any input from me. All I have to do is steer. Now if only it came with a cab, a reclining seat, and dual drink holders.....
rScotty

Don't forget the remote control!:laughing:

 

[PHILIP8N]

I have auto-throttle and HST, personally, I would not use auto-throttle with PTO engaged equipment. Philip.

 

[oosik]

540 RPM pto speed takes 2150 engine RPM on my tractor. Whether its the wood chipper or the snow blower I always run at 540 RPM pto speed.

 

[RaydaKub]

How fast do you have to run your Kubota's engine to blow snow? From videos it seems like some of them are really cranked up! Does that wear the engine? Any problems? Noise?

Spinning a tractor motor at high revs for hours on end would be a big difference for me.

A snowblower hooked to a 540 rpm pto is meant to run at 540 rpm. There may be times when you don't need it running full blast because there isn't that much snow or you don't need to throw it quite as far. But both the blower and the tractor are designed to be ready to do so when they need to. As for engine wear, I believe the engines are designed to do so also. Ag tractors run for 12-16 hours a day, day after day, pulling heavy loads under a variety of circumstances: seedbed preparation, planting, chemical application, fall tillage, etc. Every farmer I know has the throttle pulled wide open to do so. A couple hours on the snowblower won't compare to that.

 

[dsmiley]

BX25 with a BX2750D on front. I run WOT and have for 4 years. These engines are made to run WOT. That's why you find Kubota engines in wood chippers. I checked the 2750D manual and it says something like, "...when you need more power run wide open throttle."

 

[kevinj]

How fast do you have to run your Kubota's engine to blow snow?

rScotty

Pull the lever all the way down......

 

[PILOON]

With anything diesel WOT is the way to go. They are designed just for that.
With good oil at WOT your tractor will never see an engine overhaul during your lifetime.
WOT is where the power curve is at its best setting.