J. Phil Thien's Projects

on the Delta 50-850 the ID of the steel separator portion is ~19.5" the opening in the "funnel" portion is about 11.5"

Flashing... why didnt I think of that!!  I might just have to try that out...  Thanks Phil!

What about making a large MDF washer to rest into the upper portion of the steel separator?  You could use weatherstripping for the seal with the steel separator.  Then the opening could be custom sized or fitted with an outlet tube...  Anyone know where you can find a foot or so of 6-8" PVC pipe?

How did you attach the filter to the steel separator? (Wynn supplied turnbuckles were way too small)  After reviewing several options, I just bungied it down from the outside...

Rhino...

I recently upgraded my 50-850 with a Wynn filter and Phil's baffle... look a few posts down... I also got fines and larger shavings in the filter pleats.  I decided to run the DC as is to see how long it takes before needing attention.  Unfortunately, for several reasons, I've not been woodworking much in the past several weeks, so not much to update...

I'm wondering whether the larger funnel opening might be having some impact...

You almost got me!  I had to think twice, but then remembered I used a shop-built trammel, and i reduced the radius by 1.125...

I dont have the answer's to your questions, but I'm also interested in any responses.

From what I understand, the losses from the baffle/separator would be minimized in Greg's case because this particular orientation eliminated several bends which would ordinarily have to be used.

Along a similar thought... Phil have you been able to determine what the optimum diameter of the baffle would be for maximum separation and efficiency?   I could imagine that going larger could be beneficial (assuming you could find a collection container with a large enough diameter), but at some point the wouldnt the airstream slow down too much thus reducing the efficiency again?

the gap is 1.125"... must be a illusion...

I think I'll run it this way for awhile... If I were to make an outlet tube, would you suggest making a giant mdf "washer" which would fit in the top of the DC ring and then attach the outlet tube to that?  how far down should that tube extend into the DC ring?  How far up into the canister filter should it go?  I assume this could significantly lower the CFM since it would restrict the air trying to escape through the canister filter.

Also, any guidance on adjusting the drop zone?  I assume you mean make it bigger than 1.125"?

I took pictures tonight... the funnel has an opening of 11.5" ID.  The DC ring itself is about 19.5" OD.  Here's two images showing the relationship between the inlet and the baffle:




I also took pictures of the amount of dust/chips in the filter as well as the bag so you can see the relative amounts.  Here's the total amount of chips I vacuumed up in my experiment:



and here's a view of the chips that lodged in the filter:


Keep in mind this was a brand new filter...

Thanks Phil..

The baffle is about 1" below the inlet of the DC ring.  There is also a funnel incorporated in this design.  I dont recall exactly what the ID of this funnel is, but I can measure tonight and post pictures.

I dont think I stuffed the DC during my test, but admittedly it was a contrived experiment (I poured abotu 2gal of chips on the floor and sucked them up over 2min or so).  This weekend I'll get a chance to run the DC using real world conditions...

Andy

Yeah, I totally got the Wynn filter to improve the capture efficiency of the fines.  I'm definitely already seeing huge improvement there.   :)

Like others, I decided to try Phil's Baffle design primarily to cut down on the amount of material getting blown into the canister to 1) reduce the frequency of cleans 2) protect the filter from getting damaged by wood chips.  What is saw inside the filter was mostly fines, with a few larger curls...

So is it typical to see a little vortex/tornado of fines swirling in the bottom collection bag?

How snugly should 120deg portion fit against the side of the DC?  I got it really close, but I wonder if it would benefit from a strip of small weatherstripping to seal it tight?

This weekend, I upgraded my Delta 50-850 by adding a Wynn 35A100SBOL poly filter as well as Phil's baffle.  Overall, things went smoothly for the baffle install.  I had more grief figuring out how to attach the filter to the DC (the turnbuckles Wynn provides are too small).  I finally decided to use bungie straps on the outside as someone else here had reported.

I fired up the new configuration last night and gave it a whirl (so to speak).  Overall, the suction is much improved over the previous clogged 30micron bags.  I'm using the clear lower bags that Wynn included with the filter so one gets to see the wood chips swirling off the baffle.  I do see some swirling dust down into the bottom of the bag even when no new chips/dust are being pulled in, I assume this is what is termed "scrubbing?"

After collecting about ~2gal of chips, I took off the cannister and peered inside.  Its not spotless, by any stretch of the imagination, but its nowhere near clogged.  Since I dont have any experience with running the cannister without the baffle, I cannot say what it would have looked like without it.  I know that with my old bags, they were covered in caked up dust...

I know this post is somewhat vague, but does this seem to be typical performance?  Just trying to determine if I need to tweak anything to reduce the amount going up into the cannister...

Thanks

Andy