Snow Attachments Do all blowers throw the same distance?

[oldnslo]

Blower tip speed and tip clearance both. The rule of thumb I used for adjusting tip clearance on silage blowers was "pick-up a nickle and leave a dime". When the clearance got greater the HP required to throw silage the 70-foot distance went way up.

I don't know what a reasonable tip clearance is on a snow blower but the closer the better to a given point.

On your tractor what is PTO engine speed vs full throttle? Most tractors have PTO speed around 300 RPM or more below the full throttle speed. This may get your 540 up to 600 RPM or more. Older Ford 5000, 5600 series tractors would run the PTO close to 700 at full throttle. This also makes things fly farther...

Roy

 

[schmism]

have PTO speed around 300 RPM or more below the full throttle speed. This may get your 540 up to 600 RPM or more.
Roy

This is likely the case for old large iron, not small CUT's that run there 540 speed at 90% throttle.

I know my TC33 the 540 light comes on at ~2400 rpm but it tops at at 2800rpm. so i might be able to spin the PTO higher than 540 she already sounds like she's screaming at 2400 rpm.

 

[metalcaster]

I don't have any snow blower experience but I do have some with airless shot blasting machines. They consist of a wheel with blades similar to what a snow blower has. In order to get more energy for the shot we increase the wheel diameter and increase the rpm. I remember that the engineers stated that the force behind the shot increased as a square of the velocity. In order to get more distance, increase the energy by increasing the rpms. Ideally a large diameter impeller running at the highest rpm the equipment can handle with wide blades will move the most material the furthest.

 

[Jerry/MT]

Is there a way to find out how far a blower can throw snow. I once had a Kubota on a GF1800 lawnmower that threw it 30'. My JD front mount 359 on my 4410 isn't even close. Now as I shop for a rear blower I want one that will throw it a decent distance. Does a 4 blade throw further then a 3 blade inpeller? I realize snow conditions will change but is there a spec I should be looking for to ensure good throwing distance.

How far it throws should be dependent on the tip speed of the fan. the higher the tip speed the further the throw. If you know the gear ratio of the blower box and the tip diameter of the fan, you can calculate the tip speed:
Vtip = pi*Dtip*Nfan/60,where,(If D is in ft, the Vtip is ~ft/sec)

Nfan = Npto * gear ratio of blower. So Vtip =pi*Dtip*gear ratio * Npto/60.
For a 540 rpm pto,

Vtip540=9*pi*Dtip*gear ratio

 

[dstig1]

Typically a four blade will be better than a three blade since in theory there is 25% less snow on each paddle the volume is more constant which lends to distance.

Another variable is diameter of blower fan and RPM. Most 3PH models the fan is direct drive from the PTO so a 20" fan has less tip speed than a 24".

Leonz (spelling) will hopefully chime in soon since he has a wealth of knowledge.

Roy

You mean Leonz will tell him to get a Provonost, right? :laughing: I swear the man has gotta be on sales commission or sumtin'. They must be really good as he loves them, fer sure...

 

[75H2]

Mine shoots 3 inch rocks from our gravel driveway about 40 feet

 

[flyingcow]

Mine shoots 3 inch rocks from our gravel driveway about 40 feet

Got the same one. :laughing:

 

[art]

There are a lot of names out there on snow blowers. I remember having to go to Ontario to pick up a load in the fall which normally we just had them shipped in.

On the road to the shop there were three other makes being built in fab shops!!!!

My favorites that we currently work with are the Rad Tech and all time favorites the Pronovost. The Allied or Nor-cans are my least favorites.

The fan spacing to the rim is one of the main things to look for for a good blower.
Four blades with lots of gap won't be any better then a good tight three blade.

I like cast iron pillow block bearings on the auger.

 

[flyingcow]

There are a lot of names out there on snow blowers. I remember having to go to Ontario to pick up a load in the fall which normally we just had them shipped in.

On the road to the shop there were three other makes being built in fab shops!!!!

My favorites that we currently work with are the Rad Tech and all time favorites the Pronovost. The Allied or Nor-cans are my least favorites.

The fan spacing to the rim is one of the main things to look for for a good blower.
Four blades with lots of gap won't be any better then a good tight three blade.

I like cast iron pillow block bearings on the auger.

Cast iron pillow blocks? What's that mean?

 

[flyingcow]

i just measured 55ft. nice snow to throw.