got any extra flex hose?

[maldoror]

looking for a little 6" and 30 feet+ of 4" flexible hose.
economy grade is fine.

andy

[Danscyclone]

andy, How much 6 in. do you need?

[maldoror]

i need about 3' for the first transition from the cyclone housing.
and i'm thinking about doing a run of 6" to my tablesaw which would be 10' or so. probably hard to find 13' of scraps though...so i might just order a new roll of 4" and just do the tablesaw with that.
trying to figure it out still...

[Danscyclone]

I could supply you with a 13ft. section. I bought a 25 ft piece a couple years ago and found I didn't need much. Let me look into it and I'll send you a PM with the details but I won't be able to do that untill about 9 Kansas time tommorow night.

[Jim O'Dell]

That sounds like too much flex to me. If you need any at all at the cyclone (I didn't...I stuck the 6" PVC directly into the input of the cyclone) I'd think a 6" piece to isolate any vibration would be fine. But think about it. The idea for having 5' or so of straight pipe to the cyclone is to reduce turbulence to get the most efficient separation possible. Flex hose induces turbulence by it's very nature.
And you want regular pipe to as close to the machine as possible as well, again because it is more efficient/lower loss than flex hose is. I do have a short piece at each machine, again to decouple the machine from the pipe. but at most is only about 6-8". Except for my planer and it's about 2 1/2'. Or is there something about your install I don't know about? Is this temporary only? Jim.

[maldoror]

jim,
thanks for the advice.
out of the cyclone there's some structure i was having trouble getting around with the pipe and the fittings i had available. i ended up splitting the seam on the input so i thought i'd just throw on a flex hose. but i'll try to find some more fittings and then a smaller piece of flex.
i was planning on running a piece of flex from the ceiling to the unisaw door. my space is 15' x 18' and very tight....i posted a sketch here: http://www.clearvuecyclones.com/Bull...?t=1141&page=2

i'm probably going to get a router extension wing to attach to the unisaw so the upper pipe could be used for the router and saw. the duct is directly over the saw...i haven't finished the run yet. if i dropped some hard pipe down directly over my head and then attached a flex hose it would be about 6' from the dust door...then the extra footage would be to bend the hose away from the work area. i guess the best option then would be to fork a hardpipe behind the saw and to the floor...but that would take away some space from the wall to the back of the saw table and it would cost more than the flex for the fittings. what do you think? how much airflow would be lost with a 10' flex run straight up? i've never used a dust collector so i'm not sure what exactly less airflow would mean here..would it have trouble picking up the larger pieces...would a lot of dust just fall back down or get caught in the pipe?

btw...i'm setting this up in a shop i rent so i do consider it temporary...2 more years here max.

[Jim O'Dell]

If I was temporary in the shop, I think I'd do the flex also. How much you will lose? Hard to say. But I doubt it will be enough to compromise your dust collection. I tend to try to do everything I can to preserve CFM. In fact, where mine comes out of the cyclone, the pipe ran smack dab into a ceiling joist....2X4!!! I cantilevered the top of the closet surround out for 2 joists to sit on, and the farthest one built a bulk head with 5/8" ply on both sides to stiffen it up. Cut a hole in it for the pipe to go through. The other one closer to the closet I built a header to span up high to carry the load back to the closet walls. So yes, I tend to go off on the deep end on these things. Jim.