by 200cfm » Tue Dec 19, 2006 10:41 pm
Went to Boaters World and picked up the marine deck plates for the front panel. Selected two 8" clear screwout Beckson deckplates. Chose the clear so I could see the inside of the chamber and confirm the orifice selected and keep an eye on the stoppers. Chose the 8 inch size because I wanted the extra elbo room to remove and install the orifice plate.
Thinking of hanging string down from the ceiling orifice flow chamber to monitor the dreaded turbulence that everyone says screws up the flow to the measuring orifice. Has this been done before?
Should wag violently if air is upset I would think.
Then went on to Home Depot to eyeball potential things. They have 1/8" by 20 ft vinyl tubing so picked up a pack to run the lines from the 1/4 dia manometers to the chambers, etc. And got some wood liguid nails, caulking sealer, etc.
In the washer dryer section there is a ceiling diffuser device that is adjustable for air ceiling venting. Looked like a potential air valve controller for the intake and exhaust chambers with some modifications. It has a good mounting feature already built in. Just needs a board with a hole and a few bolts. And it adjusts out by rotating on a 1/4 bolt threaded through the housing bushings. If the bolt was extended on out by a coupler it could become a long rod for a knob to be attached. Only weak point was when adjusted "close" there was still a slight leak between the diffuser and main housing. Could be sealed by an O ring insert perhaps or a silicone seal or housing modified for a more precision closure. Check it out and see if it offers what I think I see.
Also in the same section there is a dryer hose one way valve that looks idea for a motor to prevent back air flow when off. Didn't get it because haven't gotten the motors yet, but the size looks, well almost perfect. Anyone used one of those before?
Question on the wood for the bench. Which is the best from a construction, strength and weight comparison. 3/4 plywood, 3/4 particle board or 3/4 MPD. I have never had to cut or nail MPD and was surprised at the weight of one sheet. But I am not please with how particle board behaves sometime either with a saw. Leaning toward plain 3/4 plywood at the momemt.
Still looking into the motors. Leaning toward the Surplus Center model for $$$$ reasons. But readings say a two stage motor is better. What is the difference between a one stage and a two stage 110 motor? Goal is 200 cfm potential at test pressure of 28." Is 4 motors sufficient? Thanks and Merry Christmas to all.