Thread: 150 vs 160mm flex hose

what is your reason for wanting to goto 160mm? you would need all the other bits in your system to be 160mm to get any real benefit out of it.

also with the carbatech hose, i recently bought some of this but they can cut you any meterage you want. they just get it in 10m rolls but if you needed 7m they can cut and sell you 7m, thats not really stated on their site.

the OD of 150mm PVC is 160mm so it goes straight on

If you're going to 3D print connectors you might want to consider internal threads for the hose interface. That's what I used for these quick connect couplers:

HFFlange.jpg
HoseEnd.jpg

The dark Blue part in this section drawing is the coupler:

HoseEnd v8 cropped.jpg

i thought i remember reading bob say that its more efficient having the flex on the outside of the pipe?

dmorse - did you convert a bunch of your machines to 150mm? any pictures of how you did it?

Originally Posted by qwertyu

i thought i remember reading bob say that its more efficient having the flex on the outside of the pipe?

Don't remember that, in fact i think it was the opposite.
BUT
if you use PVC couplers to join duct to flex then the PVC couplers have an ID then same as ducting OD so then the 150 mm flex will fit inside.

A major advantage of the 160 mm flex is it will be less restrictive than 150mm even if it goes on the outside of the duct.