does this thing suck or what

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by schloemoe posted 01-31-2012 02:55 AM 1243 views 0 times favorited 9 replies Add to Favorites Watch
View schloemoe's profile


709 posts in 2904 days

01-31-2012 02:55 AM

Just a quick question… I just receive a H.F. dust collector thru a smokin deal . Its set up with 4” colectors leaving the unit .I have about 60’ of ridged pvc pipe that is 3” will I damage the unit if i by reducers to 3” and use that to run my perimitor. Just need to now it would be a hole lot cheaper than having to buy pipe…...thanks for reading any advise will be appreciated…....................Schloemoe

-- schloemoe, Oregon , http://www.

9 replies so far

View jack1's profile


2103 posts in 3993 days

#1 posted 01-31-2012 03:02 AM

The 4” would work the best but, it’ll still work with the three ”. Give it a try. Shouldn’t hurt the unit any. I neck mine down to less than that for some tools…

-- jack -- ...measure once, curse twice!

View 404 - Not Found's profile

404 - Not Found

2544 posts in 2935 days

#2 posted 01-31-2012 03:06 AM

Any way you could just put in a 4” run for the thicknesser? If you took a big pass on a wide pine plank you might clog it up. Everything else should be ok.

View a1Jim's profile


117063 posts in 3543 days

#3 posted 01-31-2012 03:35 AM

Rick I’ve been running all of my HF dust collectors with 3” pipe for years ,no problem .

-- wood crafting & woodworking classes

View Jonathan's profile


2608 posts in 3017 days

#4 posted 01-31-2012 05:16 PM

I don’t think it’s enough to worry about, especially since you’re not running huge industrial machinery. It’s just not going to run as efficiently, although you should still be fine. You’re simply creating a bit of a pressure difference, similar to a car exhaust system, only reversed.

-- Jonathan, Denver, CO "Constructive criticism is welcome and valued as it gives me new perspectives and helps me to advance as a woodworker."

View Beginningwoodworker's profile


13345 posts in 3639 days

#5 posted 01-31-2012 05:51 PM

I use 4’’ pipe on my dust collector with good results.

View Bertha's profile


13521 posts in 2659 days

#6 posted 01-31-2012 06:05 PM

I think if the pipe is rigid, you’re in good shape. I run 4” flexible, so I’m probably not qualified to comment. I sure WANT to run perimeter pipe, though;)

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View Rob Drown's profile

Rob Drown

787 posts in 3799 days

#7 posted 01-31-2012 07:12 PM

3” has a cross sectional area of 7.06 in sq , 4” has 12.56 sq of cross sectional area. 4” is a lot bigger and will have less pressure drop.

-- The expectations of life depend upon diligence; the mechanic that would perfect his work must first sharpen his tools. Confucius, 经过艰苦的努力的梦想可以成真

View crank49's profile


4030 posts in 2937 days

#8 posted 02-01-2012 01:20 AM

You are going to connect a 3” line to each of the 4” connections on the fan inlet if I understand correctly?

If so, you will be fine. The fan inlet is actually a single 5” before they stuck the 4” wye on there at the factory.

Two 3” pipes will have a cross section equal to about 72% of the true fan inlet.

If you have a problem with something making too many chips and plugging the 3” line you can always put one of those trashcan separators at the source with a short length of 4” hose connected to the machine. Then the 3” pipe will only be conveying mostly air.

View doordude's profile


1085 posts in 2949 days

#9 posted 02-01-2012 05:48 AM

schlomoe, it helps to get your answers right here.since you’ve got the 3” material already, a1jim says it’s ok then it’s ok. go for it

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics