Volume or speed for backpack blower?

[Ridin' Green]

Originally Posted by cgaengineer

So what's the difference between the mag and non?

1/4" difference can be huge with air volume.
Posted via Mobile Device

I measured them last fall along with the nozzle on my Huusky 570. I can't recall right off the top of my head, but I'm gonna re-measure them again tomorrow to see.

You're right that a 1/4" can make a huge difference. That's exactly the difference in the 570 and 600 nozzle openings, and when I did the math, it was enough to make a noticable difference. the difference between the two nozzles I have for the 600 is less than a 1/4". IIRC, it was about an 1/8 or a bit less in diameter of the actual opening, but like I said, I'm gonna check.

[White Gardens]

Originally Posted by cgaengineer

The Stihl number of 1012 is taken at the blower housing (which just about every many lists these days), and the 712 is at the actual tube tip, same as the MPH. There is no reason to post any MPH numbers for the housing, since no one uses a blower without any tube on it. Take a close look at all the manu's listings. They all do the same thing with their number listings

Originally Posted by White Gardens

If you take the BR600 for example, it shows a 1012 CFM without the tube, but only 712 with the tube. There is no MPH rating for both but just a 210mph rating.

.....

Yes, I realized that it was without the tube, or, I should of clarified and said at the housing like you mentioned.

That's what I think I liked about the Shindaiwa, it gave a CFM and MPH listing with having the turbo tip and not having the turbo tip in place.

And when you think about it, Stihl put that 1012 CFM number in it's spec when in all reality it has no bearing on the actual use of the blower. Makes me think it just helps hype and sell the blower.

.....

[Ridin' Green]

Originally Posted by White Gardens

Yes, I realized that it was without the tube, or, I should of clarified and said at the housing like you mentioned.

That's what I think I liked about the Shindaiwa, it gave a CFM and MPH listing with having the turbo tip and not having the turbo tip in place.

And when you think about it, Stihl put that 1012 CFM number in it's spec when in all reality it has no bearing on the actual use of the blower. Makes me think it just helps hype and sell the blower.
.....

Like I said above, all the manu's do it that way now- housing CFM, then tube tip for CFM and tube tip MPH. The housing CFM listing is mainly to show how efficient their particular fan system is.


The difference with the Shindy is that they actually offer two types of nozzle tips for their blowers. One provides higher CFM, albeit slightly lower MPH that works well for general blowing use, and the turbo tip with higher MPH, but slightly lower CFM for when you need to scour/loosen stuck down debris. I think that's an option all manu's should offer.

[White Gardens]

What I'm trying to figure out is the difference between the turbo pipe and round pipe. Not sure if it's just the added tip that can be removed or the complete pipe being different.

Not seeing much in the way of photos of the turbo pipe on the Shindaiwa site.


....

[Ridin' Green]

Last fall I looked at an 802 that came with both. They were just nozzles that were several inches long that you simply removed, and changed out as needed. Several guys here have told me that their Shindy's only came with one or the other of the two tips, but the salesman at the place we were looking them over at said they came with both, and they've told me the same thing now at a couple of their other locations. Also, according to my Shindy catalog I have here, they come with both, though this catalog is a couple years old.

[jim109]

Why does the engine speed up when i place my hand over the nozzle of my br600?
Also how do you adjust carm screw from scratch with limit caps removed? jim