I have gutted a HF DC with the Stock separator ring and the stock impeller with a Wynn 35A2740 nano filter sitting on top of the Ring, the Supper Dust Deputy (SDD) is connected directly to a modified 6 inch intake on the blower ( I made a new blower cover out of 3/4 mdf and used a flanged 6 inch HVAC take off that fits directly into the suction side of the SDD)
I am using 5 inch ducting for machine connections.
the Filter is new I have not used it for saw dust collection, only testing.
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As you can see the blower exhaust directly into the stock HF ring no leaks in the system checked using a smudge stick.
The question what kind of WC change should I see from static (blower not running) compared to running.
things to note.
I made a manometer based on based DIY Tyler's for Testing a clean filter vs clogged.
I want to make a base line measurement to assess changes I make in ducting such as bends and use of flex ducting.
Currently in the configuration I have the manometer connected to top of the Wynn filter it will measure the decay of the filter efficacy with a rise in WC as the pressure inside of the filter increases thus pushing the water colum higher. This only measures how well the air is being exhausted through the filter.
What at I am looking for is a base line as stated before. I want to know how well the D.C. System is performing as it is connected to ducting and changes that are made with ducting.
Can a manometer be a good tool for this purpose and if so how and where should I connect the tubing for this measurement? I would think so 43 years ago I had a set mercury sticks to balance the carburetors on a Triumph Motorcycle. I would like others input!
How ever I do not have a pitot tube to compute CFM.
I am not really trying to derive CFM from the the tools at hand. The real test in the end is does it do the job I want it too? Remove the dust! And the fine dust. Although I would like to know.
i have seen Fan curves for this HF unit, however with the changes I doubt they mean anything.
some data collected!
I am at And Altitude off 1900 MSL (mean sea level) West Texas.
stock HF impeller
120 volts
blower running current measurement with a clamp on Amprobe.
condition: 11.5 amps with no filter or suction hose only the SDD connected
yea 2 HP yea right!!!! I am not going to try to guess what this motor is developing because I do not know what the real efficiency rating is. That being said it ain't 2 HP.
When the Wynn filter is connected and the dust bag on the bottom no suction hose on SDD 11.15 amps
this is telling me the lower amp draw is because the airflow is restricted by the exhaust through the filter.
(unrestricted no filter the current draw is higher 11.5 amps)
The Manometer home made 3/8 tubing with 3/8x 1/2 barbed nylon fitting sealed and tapped into a 11/4 inch pvc cap sealed to the top of the Wynn filter, 1/4 vent hole to cap with 1/4 hole sealed to connect to the filter no leaks.
WC displacement: with the system connected (5 inch ducting no reducers) I am seeing only a negligible rise in WC maybe a 64 of an inch. I guess this good.
any advice would be appreciated.
oh I did place a bag over the Wynn filter and sealed it airtight and observed a 3 1/4 displacement on each side of the tube for a total of 6.5 WC what are your thoughts on this performance? After all it is a HF blower.
Thanks Folks.
Lane
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