3 or 6 blades on 14" impeller for best performance...? - Snowblower Forum : Snow Blower Forums
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post #1 of 32 Old 09-13-2015, 04:30 PM Thread Starter
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3 or 6 blades on 14" impeller for best performance...?

Hello,
I am starting to tinker a bit on my Honda HS1128 project.
I have the option of extending the current impeller blades 1" on each blade to match the modified 14 impeller housing, or to use a 6 blade 14" impeller.
Which arrangement do you think will give me the best overall performance...?

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post #2 of 32 Old 09-13-2015, 04:57 PM
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go with the 6 on the 14. on that 1.

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post #3 of 32 Old 09-13-2015, 08:11 PM Thread Starter
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Question

Today I was a Home Depot and I was looking at an Ariens deluxe 30" blower and I noticed that the impeller being a 14" had only 3 blades vs 6 blades that a lot of older Ariens larger models had on 14" impellers (maybe the new more expensive models have more blades on the impeller ???).
I started wondering, did they change it from 6 to 3 to save money on production, or did they realized that 3 blades are all what is really needed to do the job.
I went to a site that had specs for larger snowblower attachments and found that they listed 4 blades for impellers from 21" to 28" and 5 blades for a 32" impeller with an impeller speed of 540rpm.
I am starting to think that 3 blades should be enough for a 14" impeller if it is going to be turning at 1000-1300rpm.
Another interesting factor is that older Hondas (HSXX series) had 4 blades impellers and the later Honda (HSXXX series) have only 3 blades and they kept the 3 blade impeller design on the latest HSSXXX series.

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post #4 of 32 Old 09-14-2015, 09:32 AM
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All the current Ariens seem to have 3 blades. All my snowblowers have had 3 blade impellers of about 12". The 44" blower mounted to my son's new John Deere D140 has a 14" impeller with 3 blades. They are all running at 1,000 rpm or a bit more. A full size tractor with rear mounted blower run off the PTO usually has a gearing system to run the auger and impeller at the right speed based upon a 540 rpm PTO speed input. The ones I have used and seen are all 4 bladed, but they are very large diameter impeller openings.

I have never seen a 6 bladed impeller.

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post #5 of 32 Old 09-14-2015, 11:26 AM Thread Starter
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Quote:
Originally Posted by Town View Post

I have never seen a 6 bladed impeller.
Here are a few Ariens 6 blade 14" impeller pictures.







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post #6 of 32 Old 09-14-2015, 12:27 PM
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Hey just to add to the confusion a little bit... most of the 'blowers I've owned have been Ariens but way back when I had a Hahn-Eclipse "snow giant" 2-stage machine. For the most part I hated that machine (it broke down constantly) but it threw snow farther than any machine I've owned since.

And that one had a *two*-bladed impeller! Or one blade, depending on how you look at it. Just one piece of sheet metal going all the way across, with a small "lip" bent in the direction of rotation on each side. The impeller had no shaft coming out of the front like on most other 2-stage machines.

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post #7 of 32 Old 04-02-2018, 01:26 PM
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Quote:
Originally Posted by ELaw View Post
Hey just to add to the confusion a little bit... most of the 'blowers I've owned have been Ariens but way back when I had a Hahn-Eclipse "snow giant" 2-stage machine. For the most part I hated that machine (it broke down constantly) but it threw snow farther than any machine I've owned since.

And that one had a *two*-bladed impeller! Or one blade, depending on how you look at it. Just one piece of sheet metal going all the way across, with a small "lip" bent in the direction of rotation on each side. The impeller had no shaft coming out of the front like on most other 2-stage machines.
Well this is interesting. Let's give this some thought.

There has to be a point of diminishing returns and then a point of no returns regarding the number of blades whether or not it makes a difference throwing either more snow, snow further, or (less clogging Lol) increasing the number of blades.

I would think that 3 or 4 largest and the widest blades that can fit would be ideal. IMO, the blades are not wide enough, these small little blades will throw snow? Well maybe some. Maybe more metal needs to be welded on making them wider? I would think more blades than the usual 3 or 4 would reduce the amount of snow being excited. There's are some Ariens that have 6 blades. I would think the snow would clog in between the blades if there were too many. Then that comes down to Why is the snow being thrown out? Is it being carried out and thrown or is it being carried out and then blown out like a fan? More blades would increase the fan effect. Or maybe a 3 bladded impeller with 3 smaller blades in between to create more of a fan.

YSHSfan has experience with water impellers and regarding water, more impeller blades are better. I can see that with a flowing liquid substance that can leak out but with snow, a solid substance, is different, it may offer more resistance and definitely will clog compared to water. Water won't clog.

And then if you only had 2 blades, a piece going straight across, would that really throw snow to the max? Or if that why 3rd was added? To throw more. Maybe the max efficiency is with 4? After that diminishing returns that's why few Sixers.

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Last edited by JLawrence08648; 04-02-2018 at 01:44 PM.
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post #8 of 32 Old 04-02-2018, 01:40 PM
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no impeller kit i think 6 would be better
impeller kit dont think it would matter
Id prefer my 921037 20 ft lbs 28 inch had a 4 blade still instead of a 3

that being said i think this 1336 has the 6 blade on it

Last edited by 1132le; 04-02-2018 at 01:44 PM.
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post #9 of 32 Old 04-02-2018, 01:41 PM Thread Starter
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JL,

My guess is there is only one way to find out and it is to test two identical snowblowers, one with standard 3 blades and modify the other one by installing a modified six blade impeller and test them in various conditions. (I think the 6 blade impeller would perform better, but I could be proven wrong).

Maybe next season I'll do that.....
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post #10 of 32 Old 04-02-2018, 02:46 PM
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Quote:
Originally Posted by 1132le View Post
that being said i think this 1336 has the 6 blade on it
https://www.youtube.com/watch?v=93TbPGL3Fm8
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