my cyclone build

**C0000005** · 16th September 2013, 10:01 AM

Originally Posted by pjt

This is a vid I did a while back mainly to get an idea of how much noise the DC made, I edited it to about a minute (was about 6mins long) at the start of planing some pieces, the movement you see is the perspex door flexing, the camera is placed about a metre below and directly under the exhaust, the bin is nearly empty here so the view is of the btm of the bin, a view of the dust exiting the short straight section would be interesting.

dust falling into bin start 0001 - YouTube

Pete

Thanks for that. I thought it would be more violent too. Gives me some thing to work with.

Cheers
Karl

**pjt** · 16th September 2013, 11:59 PM

When I did some very early tests on the whole dust collection thing I set up a much smaller collection box and the dust movement in the box was a lot more violent, that was a very simple setup and not the best comparison with a full on cyclone but it did indicate the motion and direction of the air.
My collection box is fairly large, ~1100x1100x870 a tad over 1m3 so that might have a calming effect, also I built mine with the 3D length cone, ~1200 long, that also might have a calming effect.

Here's a pic looking up into the cone, when I took this pic it hadn't been in operation for long but it is possible to see the paths of dust against the inside of the top of the cone and then diminishing off to nothing, this suggests (to me at least) a longer cone does have some calming effect.
looking up the cone.jpg

Pete

**C0000005** · 17th September 2013, 09:51 AM

Originally Posted by pjt

When I did some very early tests on the whole dust collection thing I set up a much smaller collection box and the dust movement in the box was a lot more violent, that was a very simple setup and not the best comparison with a full on cyclone but it did indicate the motion and direction of the air.
My collection box is fairly large, ~1100x1100x870 a tad over 1m3 so that might have a calming effect, also I built mine with the 3D length cone, ~1200 long, that also might have a calming effect.

Here's a pic looking up into the cone, when I took this pic it hadn't been in operation for long but it is possible to see the paths of dust against the inside of the top of the cone and then diminishing off to nothing, this suggests (to me at least) a longer cone does have some calming effect.
looking up the cone.jpg

Pete

You must have a very high ceiling

Im sure the longer cone would reduce angular velocity.

Karl

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