ruffdog
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finally got to blow some snow
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laurencen
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hi ruffdog, not sure what motor is on this unit, its high flow I will take a look at the plate at lunch
ruffdog
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Thanks, past discussions talked about the differences running the different motors. From what I gather, the 8.0 runs faster and throws farther but may bog down in heavy stuff while the 9.6 won't bog and has more grunt. :confused3:
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laurencen
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this may seem a dumb question but where does the number show up as SB240X72 is the model number on the plate, 836041? this the serial number first 6 digits, mine is 713102378, thoughts?
ruffdog
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Maybe a number on the hyd motor....not sure. I see the chart shows only the 9.6 motor is on the SB240 now. From past threads, I made notes that that would be the motor for me.
I have a SB200 - 72 with the 9.6 motor and in my opinion is not a good motor for the toolcat. According to Bobcat specs 8.0 motor is for 21 - 26 GPM and the 9.6 is for 25 - 31 GPM. The toolcat is rated at 27.9. One issue though is that the ratings are for skidsteers that are running 3500 PSI and the Toolcat pump only runs at 3000.
In Hydraulics the pressure is what provides torque and the flow is horsepower.
Since the 9.6 motor starts out on the low end flow where the toolcat maxes out you are already stretching the ability of the toolcat to keep up. Now add in the lower pump pressure and if the motor RPM slows down any like going up a hill or really heavy wet snow and you will slow the fan down and won't throw far or even plug up easy which happens to me often.
I have over a mile of road to maintain and I thought it was just poor performance or design until I rented a T870 that does 36 GPM @ 3500 PSI when my toolcat was down for a repair. That thing threw snow so far you almost couldn't see it anymore using my same blower.
With that I have determined that the 8.0 motor is far better for the size pump on the toolcat. I am just trying to get through this winter then I am trading it in on a SB240 with a 8.0 motor in the summer before next winter comes.
In Hydraulics the pressure is what provides torque and the flow is horsepower.
Since the 9.6 motor starts out on the low end flow where the toolcat maxes out you are already stretching the ability of the toolcat to keep up. Now add in the lower pump pressure and if the motor RPM slows down any like going up a hill or really heavy wet snow and you will slow the fan down and won't throw far or even plug up easy which happens to me often.
I have over a mile of road to maintain and I thought it was just poor performance or design until I rented a T870 that does 36 GPM @ 3500 PSI when my toolcat was down for a repair. That thing threw snow so far you almost couldn't see it anymore using my same blower.
With that I have determined that the 8.0 motor is far better for the size pump on the toolcat. I am just trying to get through this winter then I am trading it in on a SB240 with a 8.0 motor in the summer before next winter comes.
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laurencen
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mysersjc, thats interesting, I had purchased the blower with the S590 in 2014, it blew good and rarely bogged down and never plugged, on the Toolcat last 4 years on a older series A with standard flow it worked and reason I used it was removing the windrow left from the plow at the side of the road and not blowing more than 10 to 15 feet, this year the 2020 Toolcat has high flow, blows great but has plugged on deep drifts if it bogs down,
trying to figure which motor is on it
trying to figure which motor is on it
ruffdog
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As the other thread mentioned the 8.0 and 9.6 is the displacement of the pump. The speed of the fan turning is determined by the GPM flowing through the motor. The torque or force turning the fan is determined by the pressure the pump develops. Just like a garden sprinkler. If the nozzle size is to big all the water is going to flow out the end but won't have enough pressure(Torque) to flip the lever back and forth and the sprinkler just sits in one spot and doesn't go around. Put a smaller nozzle on and the pressure goes up like putting your thumb on the end of a hose and now that same flow of water comes out with more force until you reach the limit of the pump pushing it.
That is what happens with the 9.6 motor. It is so much bigger then the pump can provide that its like opening the flood gate so the pump never builds any pressure and causing the fan to slow way down or stall out when ever there is much resistance since there is so little pressure. Once the fan stalls the pressure will spike but since the chute has now plugged there is less resistance just blowing the snow out the front instead of up the shoot. With the 8.0 motor the performance of the toolcat pump is more evenly matched allowing the pump to develop the full 3000 PSI (not 3500psi like a skidsteer) to really push the snow up and out and keep the fan spinning at full speed.
Again this is just my understanding of fluid dynamics and my experience with a 9.6 motor on my blower. I won't know for sure until I get a blower with 8.0 motor for next year.
ruffdog
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This thread has some discussion between the 8.0 and 9.6 motors. It is interesting to me as I have limited hyd knowledge but want to understand it. I wish I could test both back to back.
https://www.tractorbynet.com/forums/toolcat/260982-snow-blower-should-i-order.html
https://www.tractorbynet.com/forums/toolcat/260982-snow-blower-should-i-order.html