Dave,
As they say, I know enough about aerodynamics and hydrodynamics to be dangerous I hope it works for you, BUT.
I would have left it alone. You may run into problems with wet sticky snow now having more surface to stick to and causing plugging issues. The original lip location reduces the surface area and the hole behind it allows the snow moving past the hole to draw in air, which acts as as a lubricant by providing a boundary layer between the chute and snow.
I am going to install a ramble here. I don’t know any thing about anything. Just wanted to get that out of the way first. But I have to sort of agree with Gordy. That opening would allow air in there. So in order for any thing to flow out of something, it has to have air coming in so it does not create a vacuum and slow the flow down. Like a fan moving air, the fan has to be able to get air from behind its self in order to push air out. Now this may only work in these throwers if the snow is fluffy and dry. That hole maybe covered over in wet or damp snow conditions. So I could be very wrong in what I’m saying in this ramble. But those openings are there for some reason. ? My Massey Ferguson snow throwers have that opening too. I’ll get a picture soon.
That completes my ramble on this for now. Have a good day gentlemen.
I left mine open Dave, when I rebuilt mine.
I thought along the same line as the others and did not change that. I almost welded out the chute base to the auger housing but chose not to so no water would stand and had run off. I have another idea I'm going to add to my caster. The three tabs to support and hold the chute will be made differently and follow the chute more. There will be uhmw pads on it also. I would have also tightened up the chute base just a hair to add a thin uhmw ring glued to the top outside edge so the chute ring fits tighter. I don't like how sloppy the ring is on these casters. I've had a few of these casters and they are all just as sloppy as the next there. I hammered the chute base out to stretch the metal to make it a little tighter there so it spins smoother back and forth. Dont forget to cut 2 more slots on each side for more rotation.
My Berco has air gaps on the chute too. Try it and see how it works
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The JD Sabre blower has holes in the auger paddles. I wonder if it helps keep snow from sticking to the auger? So would a can of non stick cooking spray or wd40...
Ariens tractor with what looks like an Ingersoll blower. Appears to have a straight section welded on before the typical Ingersoll chute. Also take note of the quart jug that appears to be hiding the chute rotation motor.
@Harry Adding a taper to the chute seems to help direct the snow better. Jancoe did this... so did grumy on the old forum. He has some videos on youtube too.
MattA wrote: ↑Mon Mar 21, 2022 9:49 pm
@Harry Adding a taper to the chute seems to help direct the snow better. Jancoe did this... so did grumy on the old forum. He has some videos on youtube too.
I have a smaller diameter but taller heavy metal chute am going to do similar to that like they did .