Abby’s Guide > Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) > Discussions > 2 piece snowblower deflectors
Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions |
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jrtrebor
 
Location: Michigan - 3 hours north of Chicago on the lake
Joined: Feb 10, 2010
Points: 539
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2 piece snowblower deflectors
Original Message Oct 4, 2012 8:29 pm |
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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
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hcbph1
Joined: Sep 20, 2012
Points: 16
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Re: 2 piece snowblower deflectors
Reply #1 Oct 5, 2012 9:39 am |
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I noticed you haven't gotten any responses, plus I don't have one but a couple of things look obvious to me. Doesn't appear to be anything more in essence than stacking 2 chute tips, obviously allowing for overlap etc. They have a hinge on top vs using 2 bolts for a pivot and there's the spring from the main chute to the top most section. That I assume to be to insure if one of the adjuster bolts work loose it won't droop. I think if you set up your new extension comparable to the original and make corresponding originals you'll be in the ballpark. |
jrtrebor
Location: Michigan - 3 hours north of Chicago on the lake
Joined: Feb 10, 2010
Points: 539
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Re: 2 piece snowblower deflectors
Reply #4 Oct 5, 2012 9:37 pm |
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No real good reason for wanting to have the two piece deflector. Just running out of things to modify or change on my blower. (How about a sulky for it. Like the old Gravely's had). I have always noticed that when the deflector is angled low. The snow comes up the chute and basically just slams into the deflector which changes it's direction. An old photo of my chute and deflector but you can kind of see what I mean. I don't have to throw it that shallow very often, but sometimes. I think a two piece deflector would probably improve the flow and maybe the distance a little as well. But who know, maybe I change my mind when it comes time to mess up a good paint job on the chute with a grinder and a welder.  Here is another photo of the two piece deflector on the Yamaha YS928J. (The photos were originally posted here by rubinew) I'm not sure but I believe that there may be a pivot point where the cable connects. That's what I need a close up photo of.  
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GtWtNorth
https://t.me/pump_upp
Location: https://t.me/pump_upp
Joined: Nov 16, 2008
Points: 264
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Re: 2 piece snowblower deflectors
Reply #6 Oct 7, 2012 7:59 pm |
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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
https://t.me/pump_upp
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jrtrebor
Location: Michigan - 3 hours north of Chicago on the lake
Joined: Feb 10, 2010
Points: 539
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Re: 2 piece snowblower deflectors
Reply #7 Oct 9, 2012 8:32 am |
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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.
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aa335
Joined: Nov 29, 2008
Points: 2434
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Re: 2 piece snowblower deflectors
Reply #8 Oct 9, 2012 12:12 pm |
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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
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Rtravis
Joined: Oct 10, 2012
Points: 1
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Re: 2 piece snowblower deflectors
Reply #11 Oct 10, 2012 4:16 pm |
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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
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Re: 2 piece snowblower deflectors
Reply #12 Oct 10, 2012 11:26 pm |
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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.
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