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  #91  
Old 11-27-2012, 11:10 AM
Nutsedge Nutsedge is offline
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I also believe the 570 has roughly a 30mph wind speed advantage over the 580 which is exactky what the Dr ordered for wet leaves.
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  #92  
Old 11-27-2012, 11:18 AM
Dave88LX Dave88LX is offline
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...and so it begins.
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  #93  
Old 11-27-2012, 11:24 AM
Darryl G Darryl G is offline
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Yeah Ridin' you're just jealous that I have a longer tube than you do.

Well...better get something done here. It's a rain day but no shortage of stuff I should be doing. Got no lights at all on my landscape trailer.
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  #94  
Old 11-27-2012, 11:24 AM
Ridin' Green Ridin' Green is offline
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I use mine to scour all the gravel/dirt the county plows blast into my yards in the spring. It does it with ease. It'll move some pretty large branches around too, especially if they have leaves on them to catch the wind. Be careful around siding etc, 'cause it can tear it loose/off if you're not careful, and will lift and move large pieces of asphalt if your driveway is paved and has any loose pieces in it.

I also have used my blowers for years now to dry my vehicles and machines off after washing them.
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Originally Posted by Darryl G
I can also tell by looking back to see how they're hanging and often reach back and feel them to see how firm they are.
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  #95  
Old 11-27-2012, 11:30 AM
Ridin' Green Ridin' Green is offline
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Quote:
Originally Posted by Darryl G View Post
Yeah Ridin' you're just jealous that I have a longer tube than you do.
See what I'm talking about? Mean, just plain mean.


Darryl, that's really hitting below the belt....... literally
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Originally Posted by Darryl G
I can also tell by looking back to see how they're hanging and often reach back and feel them to see how firm they are.
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  #96  
Old 11-27-2012, 11:44 AM
Nutsedge Nutsedge is offline
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Is the higher cfm just better for blowing dry stuff and the lower cfm but higher wind exit speed more suited for "scouring" wet debris from a surface?
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  #97  
Old 11-27-2012, 11:50 AM
Darryl G Darryl G is offline
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Quote:
Originally Posted by Nutsedge View Post
Is the higher cfm just better for blowing dry stuff and the lower cfm but higher wind exit speed more suited for "scouring" wet debris from a surface?
Yes and you can alter them a bit by adding/subtracting tube lengths and using different tips.
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  #98  
Old 11-27-2012, 11:50 AM
Ridin' Green Ridin' Green is offline
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Many guys in the will say that CFM is everything, but that's not totally correct.

CFM is what moves large piles of debris and keeps it moving, but MPH is what gets it started so the CFM can take over. High MPH does a lot more for scouring up stuck down debris than CFM, and it also makes moving lighter debris easier because CFM needs some mass to actually work against. Having a machine with high numbers in both areas is the best of both worlds and something that all the top tier blowers have. It's just that some have it more than others.

High CFM is better for moving wet debris than high MPH.
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I can also tell by looking back to see how they're hanging and often reach back and feel them to see how firm they are.
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  #99  
Old 11-27-2012, 11:57 AM
Nutsedge Nutsedge is offline
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So one might say that MPH is like HP and CFM like TQ perhaps.

Not to derail the thread but on my ECHO PB-300e it had the OE flex tube coming from the fan and the next tube (whatever that's called, the extension tube #1 maybe...) and im thinking about ordering extension tube #2 and the curved end piece that is the last one on the tube configuration. This would be a wise move, correct? It just seems like now I have plenty of CFM but the MPH is lacking, no focus of the air really.
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  #100  
Old 11-27-2012, 12:25 PM
Ridin' Green Ridin' Green is offline
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Yes, that is the exact anology I was going to use, but was too lazy to type.

If you have a curved tip on your blower, you'll experience more back thrust than you will with a straight tip. However, having the curved tip helps when the tip is close to the ground and you're trying to move leaves forward. It tends to make the airflow get under and lift the leaves where the CFM can make them move forwards more readily.

Having another center tube section will get the tip down closer to the ground, which concentrates the airflow closer to the ground and leaves the impression that you have more MPH than you really do. The only true way to gain CFM or MPH is with more power, or a better fan design on the same HP engine. Still, you can maniplulate the CFM/MPH to some degree by either narrowing the nozzle opening which gives higher MPH but reduces CFM, or by opening the nozzle diameter at the tip to increase CFM but decrease MPH.
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Originally Posted by Darryl G
I can also tell by looking back to see how they're hanging and often reach back and feel them to see how firm they are.
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