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  #21  
Old 07-26-2013, 02:34 PM
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Wet_Boots Wet_Boots is online now
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Quote:
Originally Posted by GreenLight View Post
In fairness, it's still pretty darn close. We are talking like 1/20th of an inch over the course of an hour difference when compared against the other rotators average.
You need to compare with percentages. If the smaller rotators give a 0.39 in/hr rate, and the 3500 gives 0.45 in/hr (in square spacing at 40 psi) then the 3500 applies at a rate over 15 percent higher. Increase pressure to 50 psi, and the 3500 can apply at a rate almost 40 percent higher.
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  #22  
Old 07-26-2013, 07:13 PM
GreenLight GreenLight is offline
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Originally Posted by Wet_Boots View Post
You need to compare with percentages. If the smaller rotators give a 0.39 in/hr rate, and the 3500 gives 0.45 in/hr (in square spacing at 40 psi) then the 3500 applies at a rate over 15 percent higher. Increase pressure to 50 psi, and the 3500 can apply at a rate almost 40 percent higher.
I still say show me a better option on odd geometry. It doesn't exist. When you have geometry in the 20-35 foot range over a large span there isn't a rotor on the market that mathematically evenly distributes based on 120degrees, 250 degrees, 310 degrees, etc. etc... The calculations never add up and the second you touch a radius reduction screw for throwing shorter you can throw all the math out the window anyway. Im sure the argument will be made that you can supplement your rotor week spots with a secondary spray zone, but that sure would be a heck of a lot of math and pulling off secondary spray zones without using van nozzles on odd geometry is practically impossible. Once you stick a van on a spray zone you are already completely throwing all the other data for fixed nozzles on that zone out the window because they aren't anywhere near the same in precip rate.
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  #23  
Old 07-26-2013, 08:14 PM
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We still paid some mind to mismatched rates when using the 300 series stream rotors, which weren't consistent across the board. The shorty 01 nozzle matched the precip rate of the long 03 nozzle, but a lot of work was done with the mid-sized 02 nozzles, which were a match for the 93 nozzle (9 streams, as opposed to the 12 streams of the 03 nozzle) - entire systems would be done with 02's and 93's
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  #24  
Old 07-27-2013, 02:18 PM
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Mike Leary Mike Leary is online now
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Quote:
Originally Posted by Wet_Boots View Post
We still paid some mind to mismatched rates when using the 300 series stream rotors, which weren't consistent across the board. The shorty 01 nozzle matched the precip rate of the long 03 nozzle, but a lot of work was done with the mid-sized 02 nozzles, which were a match for the 93 nozzle (9 streams, as opposed to the 12 streams of the 03 nozzle) - entire systems would be done with 02's and 93's
True, the 63 and 93 had fewer "streams", but i never liked them. The 01 is junk.
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  #25  
Old 07-27-2013, 03:51 PM
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Smaller water supplies make the 03 nozzles kind of a luxury. 02's and 93's match well and get it done.
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  #26  
Old 07-28-2013, 06:40 PM
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grassman177 grassman177 is offline
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i use whatever head matches the area covered best. interpretation on that, some, but i stick to what the head will do by testing overall. i hate the overuse of rotors toned down for huge fan patterns.
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  #27  
Old 07-28-2013, 08:33 PM
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Originally Posted by grassman177 View Post
i use whatever head matches the area covered best. interpretation on that, some, but i stick to what the head will do by testing overall. i hate the overuse of rotors toned down for huge fan patterns.
The only reason ive ever fanned out a rotor nozzle is when the coverage from other heads is lacking.
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  #28  
Old 08-01-2013, 02:54 PM
ServinSolutions ServinSolutions is offline
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They do match the precip rate...they fill in the area the 3000's miss. I have used several bags and like what I see so far. Converting smaller neighborhood parks one at a time from the old maxi-paw for better coverage. The PRS40 6" heads with check valve are more reliable and easier to adjust than the rotors too.

They will be coming out with an MP800 soon to fill the 8-10' range.
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  #29  
Old 08-02-2013, 10:24 AM
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grassman177 grassman177 is offline
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interesting to know, thanks servinsolutions.

I have used the mp2000 and 3000. really like them so far, very good coverage and even watering. i plan on upgrading a few places soon to mps, depending on the spacing, might use the new 3500s.

i have a hard time seeing the spray patterns of the mp 2000s, yet alone the smaller ones. run time must be forever on those 1000s and new smaller ones you mention. that does make them a bit cumbersome imo, cuz you cant water all damn day just to complete a cycle. there are ways around that of course, but still........
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  #30  
Old 08-02-2013, 10:58 AM
Kiril Kiril is offline
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Quote:
Originally Posted by ServinSolutions View Post
They do match the precip rate...they fill in the area the 3000's miss.
No they don't, that is unless the charts are lying.

MP 1000, 2000 3000 @ 40 PSI, square layout have PR = 0.39 in/hr for all 5 arcs listed with one exception, the MP3000 at 90 degrees has a PR of 0.37.

The MP3500 @ 40 PSI, square layout with only 3 arcs listed ranges from 0.40 in/hr at 90 degrees to 0.45 in/hr at 180 degrees.

Of course, if you don't want to believe the charts, then you can crunch the numbers yourself.

PRgross = (96.25 * Q)/A

Long story short, 0.06 in/hour difference @ 180 degree arc can translate into a whole lot of water.
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