blackheart
Well-known member
I've always wanted to own a backpack vacuum. I use them at work quite often and I knew they were pretty powerful. I came across a listing on Ebay for this one with a power nozzle for a reasonable price. The listing said it's 3 or 4 years old but with the motor having a date of 09/12/2017 it's not quite as old as they thought.
When it arrived it was clearly not maintained very well the Filters (example seen in the picture) were filthy, the inner cloth bag was dirty and incorrectly installed leading to a loss of both airflow and suction initial hose measurements were much lower than I had hoped and it's suction measured about 60" Removing the filters improved the numbers but it was still not great.
So I gave the cloth bag a wash tossed out the filters and put in a new paper bag and then tested it's power again to see how much better it would do. Those numbers were a little more in line with what I was hoping for.
I then wondered if the extension cord I was using (and the only one I had at the time) was impeding it due to resistance it may encounter in such a long path, i also found that it was only rated for 10 amps So i went out and got a shorter cord with a higher 15 amp rating. It did increase it's power but not by too much.
The hose appears to be similar to the Wessel Werk fit all hose only shorter and with non standard connections, while the stub is a standard 1.25" the machine end connection is much wider and has the connectors space far apart. On the tool eh it has a short pigtail that emerges from the hose with a connector shaped like a computer plug but it has slanted plugs
The power nozzle got torn apart and cleaned while it is a wessel werk nozzle it's a little bit different from the standard home versions, it uses a 1.5 amp motor, lacks a headlight and has a non standard pigtail.
It's also got a strange venting pattern (also present on the home versions) where air is drawn in through the nozzle chamber, pulled through a filter, then passes through the motor and then into a duct above the motor then back into the nozzle. It's an odd setup.
The filters should be in next week so when those show up I'll re-test it again and provide nozzle flow test then. I was hoping this machine would get about 125-130 cfm at the hose and it got pretty close to the 130 CFM mark I have to wonder how it would do with the standard 1.5 hose. 150? Who knows?
When it arrived it was clearly not maintained very well the Filters (example seen in the picture) were filthy, the inner cloth bag was dirty and incorrectly installed leading to a loss of both airflow and suction initial hose measurements were much lower than I had hoped and it's suction measured about 60" Removing the filters improved the numbers but it was still not great.
So I gave the cloth bag a wash tossed out the filters and put in a new paper bag and then tested it's power again to see how much better it would do. Those numbers were a little more in line with what I was hoping for.
I then wondered if the extension cord I was using (and the only one I had at the time) was impeding it due to resistance it may encounter in such a long path, i also found that it was only rated for 10 amps So i went out and got a shorter cord with a higher 15 amp rating. It did increase it's power but not by too much.
The hose appears to be similar to the Wessel Werk fit all hose only shorter and with non standard connections, while the stub is a standard 1.25" the machine end connection is much wider and has the connectors space far apart. On the tool eh it has a short pigtail that emerges from the hose with a connector shaped like a computer plug but it has slanted plugs
The power nozzle got torn apart and cleaned while it is a wessel werk nozzle it's a little bit different from the standard home versions, it uses a 1.5 amp motor, lacks a headlight and has a non standard pigtail.
It's also got a strange venting pattern (also present on the home versions) where air is drawn in through the nozzle chamber, pulled through a filter, then passes through the motor and then into a duct above the motor then back into the nozzle. It's an odd setup.
The filters should be in next week so when those show up I'll re-test it again and provide nozzle flow test then. I was hoping this machine would get about 125-130 cfm at the hose and it got pretty close to the 130 CFM mark I have to wonder how it would do with the standard 1.5 hose. 150? Who knows?
