Straightening an Impeller? - Snowblower Forum : Snow Blower Forums
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post #1 of 15 Old 10-06-2015, 06:40 PM Thread Starter
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Straightening an Impeller?

Not too concerned about the tips, since those can be cut off and replaced.

I can't get the base as flat as I would like since its off at a couple of the gussets.

Any tips or suggestions would be appreciated
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post #2 of 15 Old 10-06-2015, 07:24 PM
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post #3 of 15 Old 10-06-2015, 08:10 PM
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Heat it and beat it....or find a suitable replacement. Balance is important when high rpms are involved. MH

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post #4 of 15 Old 10-07-2015, 09:07 AM
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I agree that pictures would be good here.

If it's a flat back plate it may have assumed a wave as each blade gusset has leaned into the plate and you will do more harm than good messing with this. The metal is stretched and it's not going back. Distortion equal 4 3-4 back plane thickness is probably of no concern.

If you heat it I'm concerned that you could anneal (soften) it by relaxing any manufacturing stresses and leave it more vulnerable.

If you do any re-tipping, random welding or other add/subtract of metal try to do so in a reasonably balanced manner. It's a snowblower impeller probably spinning at around 1000 rpm not a nuclear collider.

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post #5 of 15 Old 10-07-2015, 07:30 PM Thread Starter
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I will try and get a couple pics later today. It's a 14" and has the two, I assume stiffening, pieces welded on the back. Its not crazy off probably less than a 1/4 in the worst spot. Just annoys me that its something I thought would be more fixable.
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post #6 of 15 Old 10-07-2015, 09:00 PM
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Quote:
Originally Posted by MPCOA View Post
I will try and get a couple pics later today. It's a 14" and has the two, I assume stiffening, pieces welded on the back. Its not crazy off probably less than a 1/4 in the worst spot. Just annoys me that its something I thought would be more fixable.
The stiffeners may actually be scrapers to disrupt the snow behind the impeller to reduce packing, resistance and freeze ups.
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post #7 of 15 Old 10-08-2015, 02:17 AM Thread Starter
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Here is a pic of each side of the worst parts, now I wish I had maybe taken a shot of the back to get confirmation from the Gilson guru


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post #8 of 15 Old 10-08-2015, 08:00 AM
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Holy cow! must have found a big rock hidden in the snow!
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post #9 of 15 Old 10-08-2015, 08:11 AM
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I'm probably like you in that having things "not right" drives me nuts. But in this case, I'd seriously consider leaving it alone, unless you're having a problem like the blade tips hitting the auger.

The best idea I can think of for straightening it would be to get a strong piece of metal rod, like 1" or larger steel. Set the impeller on a solid flat surface, put the rod on a high spot, and have at it with a sledgehammer. If you have access to a hydraulic press, instead of hammering you could try to press it flat.

But you're probably not going to be able to apply force at exactly the right location to make it perfectly flat. You may have to settle for it being bent a bit less and differently, vs. not at all.

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post #10 of 15 Old 10-08-2015, 03:44 PM Thread Starter
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Quote:
Originally Posted by GtWtNorth View Post
Holy cow! must have found a big rock hidden in the snow!
It's found many, but this one pulled it forward off the key and lost one of the set screws.

This machine used to be the Air Force's before the guy I got it off of, and that guy didn't look to do much more than put a newer engine on it because it didn't look to have much maintenance.
Unfortunately my driveway doesn't help me keep from beating it up much. Next run will have the scrapper adjusted better and I am going to look into getting someone to make bigger skids I think.

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