Snowblower

[garnet]

I have built a loader for my BX 1850 Kabota. Now I am planning to build a snowblower. I am not satisfied with the commercial snowbblowers. The fans run too fast, the vortex is hampered by the flat blades and they create a wall of air that impedes the intake. I propose to build my snowblower with a fan speed of 270 rpm, 8" fan depth, 24" fan diameter, 10" exhaust port, a 95* pitch, and overall width of 50". Will the backing plate impede the horizontal air intake I am trying to create?

 

[garnet]

Here is a picture of the loader I built.

 

[WilliamBos]

Here is a picture of the loader I built.

Excellent Work!! Keep us posted. Do you need some pictures of a snow blower for example??

 

[garnet]

I would like pictures and technical support regarding fan speed and size of fan.

 

[Spudland_Dave]

I propose to build my snowblower with a fan speed of 270 rpm, 8" fan depth, 24" fan diameter,

IMO At that speed, you wont have a snow blower, you'll have a power snow shovel at best...it wont blow snow worth a bean...
I've seen people make 1:1.3 or 1.5 Speed increasers to bump up the Fan speed to 750+ RPM and it makes a BIG difference in how far it chucks the snow....

 

[Dominique01149]

I don't know if that's a wise idea to slow down the fan speed. The way I see it, the fan is suppose to move a bit of snow, and not act like a shovel. Our Lucknow has a slow (compared to other) fan, and although it can move loads of snow, it doesn't shoot it far, and required lots of PTO HP. I'd prefer a snowblower that spins fast, and that won't jam up as quickly. The speed ratio between the auger and fan is important as well, as the auger dictates how much snow is fed to the fan.

Have you looked at the fans on a Pronovost?

They have curved fan blades.

Let us know how it works.

 

[jimgerken]

Yea, Ditto. 270 rpm on 24 inch diameter is way too slow. My math says the tip speed (and theoretical speed of the snow as it leaves the fan) will be under 1700 feet per minute. My single stage runs at just under 4000 feet per minute. It will pitch most snow 30 feet, certain conditions up to twice that far. I'd guess you won't get snow to make 10 feet at that speed. And now you will get people telling you that 5000 feet per minute is the absolute minimum...

 

[garnet]

Hi thanks for your input I can make anything from wood or steel but that doesn稚 mean it is right if you could send me your math equations I would be very appreciative . Just recently have learned how to read hope my grammar is ok

 

[Donman]

When I first got my Yanmar with the two speed PTO, I did not read the owners manual and I thought that 540 rpm was up and 1000 rpm was down (on the handle). When I blew snow with it I could not believe how far that snow would blow! 50 to 60 feet easy. But then I wondered why it bogged down so easy in big drifts till I realized the PTO speed was wrong.
I guess what I am trying to say is faster is better than slower for your blower speed.

 

[jimmysisson]

Garnet - nice work on the loader! Do the rear uprights sleeve down into the carrier, then get pinned? So when you remove it from the tractor you raise the uprights somehow and reverse out from under? Seems very strong and logical. Or maybe it's not removable?
What is the steel piece just to the right (rear) of the upright in the picture?
Can't help on the blower speed, but it's very satisfying to get the stuff away from you, and you wear less too.
Jim

 

[PILOON]

My blower has about a 16" 3 bladed 'fan' and at 550 RPM it barely shoots 8 ft.
Fortunately my CUT has 3 speed PTO and I use the 750 RPM for regular fresh snow blowing.
When in hard packed banks I do revert to the 550 to save shear bolts.
My 'take' is diameter= distance or perhaps better stated, blade tip speed=distance and blade surface=capacity.

Hence; larger diameter=better throw distance.

Surface/capacity would depend on PTO HP as well as travel or feed speed and hence a hydrostatic tranny is best suited for blowing with the manual tranny as last choice.

Curved blade would help 'toss' furthur, but is it worth the fabbing extra work?

Personally I believe that the best 'upgrade' a fellow could do is have a 'non stick' liner in the blower drum as well as a moulded plastic shute as that would eliminate the most frustrating blowing headache of all.
CLOGGED SHUTE FROM WET SNOW!

I long have wished to paint my snow shute with pickup truck liquid bedliner just to try that out.
Fitting my shute with plastic kids slide-a-boggin sheets has hepled tremendously but tends not to last all that long due to attachement difficulties but does prove the principal.

 

[garnet]

Jim I think that peace of steal you refer to is part of my mower deck mounting system. Yes the loader will detach as well as my bucket. As soon as I can I well post more pictures.

 

[bostonrats]

I have built a loader for my BX 1850 Kabota. Now I am planning to build a snowblower. I am not satisfied with the commercial snowbblowers. The fans run too fast, the vortex is hampered by the flat blades and they create a wall of air that impedes the intake. I propose to build my snowblower with a fan speed of 270 rpm, 8" fan depth, 24" fan diameter, 10" exhaust port, a 95* pitch, and overall width of 50". Will the backing plate impede the horizontal air intake I am trying to create?

Hi Garnet,

Nice looking loader, no doubt you can fab. Not sure I agree with you about the wall of air. As the fan paddles rotate and push the air ultimately out the chute it is replace by air at the front edge. There is no wall of air there, there's a suction there, just in like all centrifugal impeller pumps. Maybe there would be a wall of air if there was no discharge chute.

As are a fan speed goes, the more the merrier...up to the point where bearings are an issue as well as your speed to power curve goes.

I think that most run around 500 RPM for this reason. The large diameter fan is a plus, size of the cute opening is critical. Keep it as big as possible. Some engineers figured that a small chute would cause higher velocity and less clogging. Small chutes clog just fine and stink when it comes to throughput. No need to squeeze all that snow thought a small chute...just eats up HP.

Speaking of which, how much HP do you have to play with? I'd keep to no less than 3 hp per foot of auger. Keep in mind the losses of transmission and splitting of power off to drive the tractor.

For this reason and others I put an engine on my attachment, Frankenblower. YouTube - Frankenblower March 9 2009

Good luck with the project and remember, there are NO crackerjack prizes down the chute.