6305 shrouds on 6105?

Here is what we know from bag testing, which is as close to real gph as you can get, it measures what can actually be collected from the pump in a bag, no computations, no guessing, no theory, turbulence is not measured, only what can actually be collected. We used the following method, a pipe of 10cm length with a diameter matching the pumps output, with what is essentially a heavy duty trash bag on the end, it is deflated of any air and held closed by one hand at the pipe until "go". The pump is running in a tank about 12cm (5") from the surface, one person attaches the pipe at the word "go" from a stop watch reader (2nd person) and the reader counts down 5 seconds and says "stop" at 5 seconds. The bag is weighed in kg after being placed in a rigid tub to avoid tearing and spills, the scale is tared for the weight of the tub and bag empty. 1 liter of water weighs 1 kg, there are 720 5 second intervals in an hour, by multiplying the collected weight of water in kg by 720 you get lph. We do 5 runs rotating the watch reader and the bag tester to minimize reaction time errors (though a person who is slow will generally attach slow and remove slow and same of someone who is fast so this error is largely self correcting) and we take the average of the 5 runs. Keep in mind that the bag and pipe are a source of resistance and in all likelihood, real numbers are higher, but not astronomically, likely no more than 10%. Anyone can do this test themselves. To convert to gallons, simply divide by 3.785.

6105 with 18V jumper-9620 lph (Average of 13.36 kg of water collected in 5 seconds)
MP-40- 11433 lph (Average 15.88 kg of water collected in 5 sec)
6105 with 24V jumper-11950 lph (Average of 17.48 kg of water collected in 5 seconds)

You can also see why this method is so limited, much past 20kg and you will just end up soaked when the bag rips open. So, bigger pumps and longer sample times which would increase accuracy become very difficult



Thank you for the data.
 
Just curious, so is there such a jumper upgrade to improve the flow of 6205 further, within the safety limits?
 
However, compared to the competition even at 64db we are still several orders of magnitude quieter since db is a logarithmic scale.

Hi Roger. That number seems awfully high, how did you guys get that number? The competition claims their pumps in the 25-30 dB range, and I agree for the most part on that. I'd peg your pumps, in tank, at maybe 14-18 dB. I have 19 dB 4" fans that are more audible than the 6105s.
 
I know for a fact that an MP40 running at 100% is way over the 30db range. I had one of mine tested and at it was over 50db before full power. I cant remember the exact number but it was almost at 60 db at 100%. I just found it to be loud and had to see for myself what the number was. They make us wear ear protection at 85 db, lol. I almost needed hearing protection around my tank.
 
Hi Roger

as you know I own 4 t 6305 , Are there plans to improve their performance?

I have a BIG tank (240cm x 70 cm x 100 cm tall) And sometimes it fells that need more circulation

I am happy with my 6305 and actualy with your assitance whenever I had need it


BUT the 6305 were the ones with the biggest diference in the report and are the biggest of the line and the most expensive , will we have some sort of retrofit upgrade

thanks

Claudio
 
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