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jrtrebor


Location: Michigan - 3 hours north of Chicago on the lake
Joined: Feb 10, 2010
Points: 539

2 piece snowblower deflectors
Original Message   Oct 4, 2012 8:29 pm



Does anyone here, by chance have a snowblower with a two piece deflector.  Similar to what's on the Yamaha YS928J.
I want to put one my Ariens.  I have the two deflectors made already.  So what I really could use are a few close up photos of
the linkage/arms that tie both deflectors together.  That allows them to move in tandem.
I have found other photos of the Yamaha's set up but none that give me a real good look at the arms.
I could probably work out the pivot points on my own.  But a few photos would sure cut down on time
involved in the trial and error method.

This message was modified Oct 4, 2012 by jrtrebor
Replies: 6 - 15 of 15Next page of topicsPreviousAllView as Outline
GtWtNorth


Location: Montreal area, QC, Canada
Joined: Nov 16, 2008
Points: 264

Re: 2 piece snowblower deflectors
Reply #6   Oct 7, 2012 7:59 pm
I would have thought that a 3 piece (or curved) chute would reduce your distance due to extra friction in the chute. The snow leaves the tip of the impeller in a straight line at maximum speed. So each time it touches the side of the chute to change direction, it loses momentum. Plus each change of direction means the stream of snow loses more momentum crashing into itself at the point of change. So is it better to have 1 or two big changes in direction or 3 or 4 smaller changes???
Anyways, not counting the cool factor, I could see value for accurate placement of the snow in crowded city locations.

Cheers
jrtrebor


Location: Michigan - 3 hours north of Chicago on the lake
Joined: Feb 10, 2010
Points: 539

Re: 2 piece snowblower deflectors
Reply #7   Oct 9, 2012 8:32 am
borat wrote:
How about making a plastic insert that will make a transition curve from the chute to the deflector.

That's an interesting idea.  My chute is lined already.  So I could add an additional piece.  Or replace the current liner with a longer one.  Have to take a look at that.

"I would have thought that a 3 piece (or curved) chute would reduce your distance due to extra friction in the chute".
Friction isn't that big a factor.   It's more about the loss of velocity that takes place as the snow stream makes an abrupt change in direction. 
Angles versus curves.
Honda is now putting a two piece deflector on their HS1336I model.
 


aa335


Joined: Nov 29, 2008
Points: 2434

Re: 2 piece snowblower deflectors
Reply #8   Oct 9, 2012 12:12 pm
GtWtNorth wrote:
Plus each change of direction means the stream of snow loses more momentum crashing into itself at the point of change. So is it better to have 1 or two big changes in direction or 3 or 4 smaller changes???


It's better not to have any chutes at all.  On some huge airport snowblowers, the chute moves out of the way so the snow comes directly out of the impeller without any friction for maximum throughput.

But I think if the snow is going to make contact with the chutes, it's best to create a smooth and gradual change in direction.
This message was modified Oct 9, 2012 by aa335
longboat


Joined: Feb 11, 2009
Points: 103

Re: 2 piece snowblower deflectors
Reply #9   Oct 10, 2012 11:56 am
Maybe the two-piece deflector also reduces the amount of snow falling back through the chute onto the blower/engine?  At least on my Crapsman (mtd), I get plenty of snow falling out the backside of the deflector onto the machine and icing it up in places.  I need to try the Krazy Karpet liner...
longboat


Joined: Feb 11, 2009
Points: 103

Re: 2 piece snowblower deflectors
Reply #10   Oct 10, 2012 3:46 pm
This discussion brings up a thought for driving the evolution of snowblowers...

Wouldn't it be more efficient to place the chute opening on a rotating collar around the impeller?  Need to blow to the right? Rotate collar to the right.  Need to blow to the left? Rotate collar to the left.  In many cases, you wouldn't need a deflector at all.  The deflector would only be used to direct snow forward/backward of the blower when the need arose.

Maybe I'm overthinking things...

Rtravis


Joined: Oct 10, 2012
Points: 1

Re: 2 piece snowblower deflectors
Reply #11   Oct 10, 2012 4:16 pm
I have the Husqvarna 12527HV which has a chute like this:



I sort of agree though, I don't understand why 2 piece shoot is necessary and on the fancier Husqvarna models its all 1 piece.
jrtrebor


Location: Michigan - 3 hours north of Chicago on the lake
Joined: Feb 10, 2010
Points: 539

Re: 2 piece snowblower deflectors
Reply #12   Oct 10, 2012 11:26 pm
longboat wrote:
This discussion brings up a thought for driving the evolution of snowblowers...

Wouldn't it be more efficient to place the chute opening on a rotating collar around the impeller?  Need to blow to the right? Rotate collar to the right.  Need to blow to the left? Rotate collar to the left.  In many cases, you wouldn't need a deflector at all.  The deflector would only be used to direct snow forward/backward of the blower when the need arose.

Maybe I'm overthinking things...


I believe that some of the old Gravely snowblowers had rotating
impeller housings. 
Shryp


Location: Cleveland, OH
Joined: Jul 26, 2010
Points: 532

Re: 2 piece snowblower deflectors
Reply #13   Oct 11, 2012 5:04 am
jrtrebor wrote:
I believe that some of the old Gravely snowblowers had rotating
impeller housings. 


They did. As do some of the bigger commercial ones used for airports and stuff.
borat


Joined: Nov 10, 2007
Points: 2692

Re: 2 piece snowblower deflectors
Reply #14   Oct 11, 2012 4:45 pm
I took a look at the chute/deflector relationship on the Simplicity.   The angle of deflection doesn't appear to be all that restrictive until the deflector is getting close to being horizontal.  I doubt very much that any type of alteration to the chute/deflector relationship would result in any real advantage other than possibly looking more sophisticated.  On the other hand, more joints means more pressure for the control cable and more places for ice to lock up the mechanism.  Simple sometimes equals better.
55utilitysedan


Location: Litchfield County, CT.
Joined: Dec 19, 2011
Points: 41

Re: 2 piece snowblower deflectors
Reply #15   Oct 11, 2012 5:11 pm
"Simple sometimes better".........you have that right borat...........
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