Snow Attachments snow blower tip speed

[19rocky44]

I am trying to mount one brand snow blower on another brand tractor. I think I have most things figured out except the RPM needed to turn the 14" impeller fast enough to get the tip speed required to throw snow a reasonable distance. All knowledgeable answers will be very much appreciated.
Roger

 

[Dave M7040]

I am trying to mount one brand snow blower on another brand tractor. I think I have most things figured out except the RPM needed to turn the 14" impeller fast enough to get the tip speed required to throw snow a reasonable distance. All knowledgeable answers will be very much appreciated.
Roger

Are you talking about a single stage front mounted blower?

A blower driven by an electric clutch on the gas engine motor?

Typically, a blower manufacturer will make product for many tractor brands. The big difference between a New Holland and a Cub Cadet blower will be the paint color.

Gas tractor motors are limited to a few brands such as Kohler, Kawasaki. These motors are built to standards so should a new motor be needed, the mounting bolt holes, shaft size and length will also be following an industry standard.

Dave M7040

 

[grsthegreat]

as far as i know, all rear mounted, 3 point pto blowers are designed for 540 RPM. thats standard pto speed. every blower ive ever used is run at that speed. even ones with no name plates on them.

 

[metalbender]

Most rear mount pto driven blowers operate at 540 rpm. Smaller front mounts usually run 2000 rpm to a gearbox, reduces it to 540 impeller speed.

 

[Amvcane]

What brand and model snow blower? What brand and model tractor?
How many horse power is the tractor.

 

[Beaver Cove Deere]

Yup. 540 on a PTO driven is standard.
On a snowblower it's all about the fan speed. The larger the fan diameter the better off you will be.

 

[CobyRupert]

Are you saying the snowblower is NOT PTO driven?
That’s it’s not designed to run at 540 rpm input?

 

[19rocky44]

I am trying to mount one brand snow blower on another brand tractor. I think I have most things figured out except the RPM needed to turn the 14" impeller fast enough to get the tip speed required to throw snow a reasonable distance. All knowledgeable answers will be very much appreciated.
Roger

The blower is a two stage that will be driven by a pto, drive shaft and thanks for your reply.

 

[19rocky44]

My PTO is a 2 speed of 1100 or 2500 RPM. Sounds like I need to reduce my speed by 50%. Thanks for your reply.

 

[19rocky44]

What brand and model snow blower? What brand and model tractor?
How many horse power is the tractor.

The snowblower is a old cub cadet 190-450 and the tractor is a f2400 kubota rated at 24 HP but not sure of the PTO rating. I also realize the blower is to narrow for the tractor so I will be reversing the rims to compensate for it this year hope this sounds like my bases are covered and thank you for your reply

 

[Amvcane]

How fast was the impeller spinning when it was on your cub cadet tractor?
I would start there.
You should be able to design it so you won't have to run the Kubota at wot. Interesting build let's see some pics.

 

[Dave M7040]

Often owners trying to do what you want to do forget to check out the required direction of rotation that the blower needs compared to what the F series tractor has.

Dave M7040

 

[robstaples]

Roger,
Tell me if this is correct. From my looking at the components,
The engine drove a belt to the blower with similar diameters pulleys and then the gear box reduced the speed by .53 ( 15 to 28 teeth gears) . That shaft drove the blower impeller and beyond. So I think the normal gasoline engine speed maximizes at about 3600 rpm.
So on your original setup the blower impeller would be turning about 1800-1900 rpm. or tip speed of 6594 ft / min
If this is correct , you could remove the speed reducing gear box and drive from your 2500 pto and reduce engine rpm or reverse the gear box and feed from 1000 pto.
Example of typical tip speed: rear TPO at 540 rpm turning a 24" impeller = 3390 tip speed

From reading various threads on the web, tip speed is varies from 3000 to 5000 feet per minute.
rob

 

[Industrial Toys]

540 RPM and 1000 on larger tractors is talking about the traditional rear pto only.

A friend once tried to adapt one front mount blower to another make, only to discover after, that one turned backwards to the other. One half of it was a cub cadet.

 

[robstaples]

Roger, note removing the gear box will reverse the shaft direction.

 

[19rocky44]

Roger,
Tell me if this is correct. From my looking at the components,
The engine drove a belt to the blower with similar diameters pulleys and then the gear box reduced the speed by .53 ( 15 to 28 teeth gears) . That shaft drove the blower impeller and beyond. So I think the normal gasoline engine speed maximizes at about 3600 rpm.
So on your original setup the blower impeller would be turning about 1800-1900 rpm. or tip speed of 6594 ft / min
If this is correct , you could remove the speed reducing gear box and drive from your 2500 pto and reduce engine rpm or reverse the gear box and feed from 1000 pto.
Example of typical tip speed: rear TPO at 540 rpm turning a 24" impeller = 3390 tip speed

From reading various threads on the web, tip speed is varies from 3000 to 5000 feet per minute.
rob

robstaples
You understand it right but I intended to use the 1100 pto speed and go directly to the 14" impeller and not use the gear box at all. With my pto turning cw and the snow exiting the left side of the impeller it should be the correct rotation.

 

[19rocky44]

540 RPM and 1000 on larger tractors is talking about the traditional rear pto only.

A friend once tried to adapt one front mount blower to another make, only to discover after, that one turned backwards to the other. One half of it was a cub cadet.

Industrial Toys
This tractor has two pto speeds to choose from either 1100 or 2500 rpm. I hope the 1100 rpm will be alright, and the tractor pto is cw rotation which would make the snow exit the left side of the impeller once again I hope.

 

[robstaples]

Roger,
I have a 48" Ariens 2 stage and I added 3" wings to each side to widen just a bit to 54". An alternative for extra width. Wings work just fine. Converted to hydraulic motor and SSQA mount. I used 2 channel remote control for chute rotation and tilt after adding 12 v motor and actuator-- battery operated (12 v Milwaukee) . With PTO pump, blower works great but hoses and setup is a PITA. And southeast Michigan hardly gets snow blower snowfalls.

 

[CalG]

Tip speed of "a mile a minute" throws snow pretty well.

so the 3000 to 5000 fpm figure is what I would go for. How you get there is up to your hardware.

Remember Pi ar ROUND ;-)

 

[Industrial Toys]

High fan speed is everything for good blowing distance, but you also need enough torque to accomplish that and deal with heavy ice and snow being jammed into the impeller under worst case conditions. Kind of like a table fan that goes like crazy, moves a lot of air but you can stick your pinky finger in there and stop it.