The reducer will really cut the air flow. Dust collectors are made to run with the O E size hose and not much ducting. I'm going to see if there is such a thing as a dust collector with a two or 3 stage (series) fan like a good vacuum cleaner uses. That way you get higher suction but less air flow running it wide open but with a reducer and smaller hose it should really work. The motor would have to be sized based on worst possible use conditions.
i attached the 4" dust collection hose to the mounting flange that came with this kit
you get the mounting flange, 2 clamps and a great 10' hose for 19.99. using the ridgid table saw dust collection accessory designed for pre 3650 table saws, i cut a hole on the only flat portion of the collector accessory( the removable door). double sided tape sealed the pioneer flange to the dust collector accessory and 1/2" self tapping sheet metal screws connected the flange to the accessory. now i can use both my dust collector and shop vac together to capture saw dust. first start up resulted in not only the dust from cuts being captured but the dust that had accumulated in corners of the saw cabinet was almost entirely removed.
this is the ridgid table saw dust collection accessory:
How big is this collector? Does it cover the whole bottom of the saw cabinet? That is basically what I made for mine but it covers the bottom opening of the cabinet, and slopes down toward the back of the saw where i attach a 4" hose. I left the 2.5" shroud on and left it dump into the bin. Works pretty well.
CPW...i picked up three of them over the past few years as they were on clearance @HD. got 2 for $7.00 ea. figured the hoses were worth more than that. BTW, the 2424 and 2412 that are specified as the saws the AC1098 will fit pre date the 3650. it snapped into the bottom of the table saw cabinet where the saw sits on the stand. the 2412 and 2424 are in no way related to the current portable 2400/2410 ridgid saws. they were lower end versions of the 3612, which was the predecessor of the 3650. as i noted in my post, i cut a 4" hole in the removable door of the accessory and added the pioneer dust shroud to it. now i can pull dust from under the saw using either the shop vac(2.5"), the DC (4") or both at the same time. the 2412 did not have an integrated dust shroud like the 3650 has, so i don't know if it will work with your saw.
bob d...the dust collector is roughly the same shape as the panels you added to your 3650. it does a fairly good job of covering the bottom opening of the saw cabinet.
i have no idea if it is still produced.
is there a link to a cyclone separator that would accomodate a 4" dust collector as it would be of considerable benefit? i contacted oneida air about just such an item and they didn't support that application. their dust deputy product only supports shop vacs.
This one sure looks like it's setup for 4" ID hose connections.
Here's the main page for dust collector accessories.
Here's some info from Rockler on what they have.
Note: Get the device before getting a trashcan for it. You need to know the correct diameter for the top of the trashcan.
Put simple, take the cover and match up the trashcan. It needs to fit properly.
i was hoping to find a separator that employed some sort of a cyclone to improve the efficiency of the separator. when i go the separator route, i'll probably use this one