Thread: Hare and Forbes CDS 2/3

Originally Posted by scuzyboy

Hi all, has any one used this cyclone from hare and Forbes or know of any useful reviews to check out, looking to buy but not much info on the web about them.
Cheers
Peter

Hi Peter, sorry I have no experience with this cyclone/chip separator but can I ask what dust collector / blower you intend to run it with? Looking at the pics it looks like a fairly squat cyclone so may not be the most efficient at separating the dust particles and it looks like the standard configuration runs quite a bit of flex hose between the cyclone and dust collector which would add static pressure.

I guess the key point would be to expect a fairly significant increase in static pressure for your system if you add this and ensure you can still get your required flow rate with the increased restriction. At least it has 6 inch inlets and outlets which is a positive.

Hey Dom thanks for the reply , will be running 2hp dusty with 6" pipe and was thinking of doing away with the splitter and running 6" from there to the machines via 6" drain pipe.
Cheers
Peter


Acoustic and Electric guitars and Basses.

Originally Posted by scuzyboy

Hey Dom thanks for the reply , will be running 2hp dusty with 6" pipe and was thinking of doing away with the splitter and running 6" from there to the machines via 6" drain pipe.
Cheers
Peter


Acoustic and Electric guitars and Basses.

Have you done the intake and impeller exhaust mods in the 2HP sticky to your dust extractor? Because if you haven't I would be worried that your cfm will definitely be far too low with a cyclone attached.

Are you looking at adding the cyclone for any particular reason? To reduce filter clogging? Because you will be reducing the amount of airflow at your tools. Whether the trade off is worth it is up to you.

I think BobL generally advises against adding a cyclone/chip separator to a 2hp dustie as the flow is generally already marginal even without one.

Originally Posted by DomAU

Have you done the intake and impeller exhaust mods in the 2HP sticky to your dust extractor? Because if you haven't I would be worried that your cfm will definitely be far too low with a cyclone attached.

No I have not but will look into it and see what's involved.

Are you looking at adding the cyclone for any particular reason? To reduce filter clogging? Because you will be reducing the amount of airflow at your tools. Whether the trade off is worth it is up to you.

I am adding it to get the dust and chips easier disposal and do away with the bags as the main dust storage.

I think BobL generally advises against adding a cyclone/chip separator to a 2hp dustie as the flow is generally already marginal even without one.

Ok bummer going 3 or 4 horse power is hard as don't have 15amp power at my shed.

DomAU has basically summed it up.

If all you worry about is chips and you hate cleaning the filters then that sort of a cyclone is OK.

But if you are worried about dust treated to your health then this is another story. Those sort of devices will slow dow the air flow by as much as 25% so you will not collect as much of the fine dust as possible in the first place. The cyclone will prevent the filter from clogging up as fast but if you always empty the chip bag before it gets more than 2/3rd full and keep the filter clean you will always have more air flow than the reduced flow that the cyclone creates in such a system,

The modification of the generic 2HP to accept 6" ducting as described in the sticky at the beginning of this forum will increase the flow by more than 100% provided 6" ducting is used and the machine port is are fully opened up to take advantage of this.

More important than any of this is to locate or vent the DC outside the shed. Are you able to do this?

Originally Posted by BobL

DomAU has basically summed it up.

If all you worry about is chips and you hate cleaning the filters then that sort of a cyclone is OK.

But if you are worried about dust treated to your health then this is another story. Those sort of devices will slow dow the air flow by as much as 25% so you will not collect as much of the fine dust as possible in the first place. The cyclone will prevent the filter from clogging up as fast but if you always empty the chip bag before it gets more than 2/3rd full and keep the filter clean you will always have more air flow than the reduced flow that the cyclone creates in such a system,

The modification of the generic 2HP to accept 6" ducting as described in the sticky at the beginning of this forum will increase the flow by more than 100% provided 6" ducting is used and the machine port is are fully opened up to take advantage of this.

More important than any of this is to locate or vent the DC outside the shed. Are you able to do this?

Hey Bob, thanks for the reply. I do worry about the fine dust and if I could vent outside I would but hemmed in buy neighbors that would not like the dust and the noise. I thought about adding a pleated filter to replace the the top filter bag, would that help with fine dust or would it cause more pressure problems.
Will defiantly be using 6" ducting as I have it already now and would be removing the 2x spliter from the cyclone and using 6" from there. Even thought of direct mounting the motor to the top of the cyclone.

Cheers
Peter

Hi Peter.,

I'm in the process of mounting a motor/blower combo directly on top of one of these cyclones. At the moment a new inlet plate is being made for the blower and small length of tube to connect the blower to the cyclone. Because the tube at the top of the cyclone is 175mm in diameter I'll be making a new inlet plate with the same diameter. Will let everyone know how this goes soon.

Cheers
Attila.

Originally Posted by scuzyboy

Hi all, has any one used this cyclone from hare and Forbes or know of any useful reviews to check out, looking to buy but not much info on the web about them.
Cheers
Peter

Hi Peter,
I own the CD-2A which is this unit combined with a 2hp blower and pleated filter. It was an impulse buy off gumtree due to a very very cheap price. I've actually not used it yet as I need to work out all the mods and pipework to hook into my bandsaw and table saw. I've not found any information on the internet about these units. I intend to ditch that silly splitter and run 6" PVC main lines to machines. The inlet is 177mm / 7" so I planned on attempting to heat some 6" pvc and stretch to the wider diameter (sounds difficult but I don't know what else to do).

I'm concerned about the design of this unit, as DomAU points out the cyclone seems too stubby, and other aspects of the design seem a bit ill conceived. None the less I intend to push on and make use of what I've got. If it turns out to be lousy I'll investigate the effort/effectiveness/expense to upgrade the motor/blower.

Hi All,

I have this cyclone unit from Hare & Forbes, it was purchased as a potential interim solution until i found the time to build Bill Pentz design. I also purchased it knowing that like what DomAU said the proportions are not ideal for good dust separation but for me it was better than nothing. My canister filter on my 2hp carbatec dusty was getting clogged way too quickly for my liking so i decided action needed to be taken.

After inspecting the cyclone from H&F i was reasonably happy with the setup, it has 6 inch inlets/outlets and a random vacuum hose from the dust hopper to the top of the cyclone, no idea what this is for. One of the sales reps says it helps air flow...*shrugs* I will probably modify the cyclone in the future to incorporate a ramp of sorts but for now it'll probably stay as is. Overall the construction/fit/feel of the cyclone is fairly average IMO, for eg the seals in the unit i got wasn't placed set properly in the hopper and thus didn't seal properly, i suspect lots of tape/silicon will be applied in the future.

In terms of my setup with the unit at the moment, is similar to the Clearvue setup with the motor on top, 6" custom inlet for the cyclone, and the outlet is the still the standard 5" to a canister filter. At some point in the near future I will do the fill mods as per sticky. My dilemma at this stage is the canister filter does not fit under the roof if i was to have the filter at the same level as the outlet, so i need to figure out how to make a S bend outlet to the canister filter.

I haven't made alot of dust since putting it back together 2 weeks ago, and I'd say the immediate increase I noticed is most probably due to the fact that I've widened the stock inlet from 4" to 6". In terms of its separating abilities, I'd say it performs as expected, where its separating most of the dust but there is definitely small amounts of dust in the filter collection bag but definitely more in the cyclone dust hopper. If i was to put a figure on it I'd probably say about 90-95% separation, which ok but could be much better.

Would I buy it again? given my current circumstances probably would, If i had more time/money on my hands definitely not. My plans are to finish the modifications on the 2hp dusty as per sticky, and at some point upgrade motor to 3-5hp unit as i'm getting 15 amps installed in my shed soon, so i see it as a long term investment, even if at some point it doesn't perform as expected and i end up going down the route of Bill Pentz cyclone not all will be lost as the mods to my dusty will remain and the H&F cyclone ends up in the trash.

Hi just a quick question .Where are the motor and blower setups available I too have the h&f cyclone but would like to mount a motor/blower on top but have'nt been able to source a motor/blower to suit.

Hi Dirob, you'll need to modify an existing dust extraction unit to suit. Refer to the 2hp sticky for some ideas. You'll also need to fabricate a stand or wall mount for your motor.

Originally Posted by tonzeyd

Hi All,



....and a random vacuum hose from the dust hopper to the top of the cyclone, no idea what this is for. One of the sales reps says it helps air flow...*shrugs*......

This hose is to create suction around a plastic waste bag in order to help stop it from collapsing. No doubt it would decrease efficiency a little. If you decide not to use a waste bag then the hose can be removed and the openings filled.

I've built a system using one of these, details can be found here

thanks, after looking at this setup I'm afraid it is way beyond my expertise I have the same cyclone but don't yet have a suitable extractor.

That setup looks great, it's going to be a while before I've got a setup I'm happy with, right now I'm trouble shooting, sadly mines leaking air, and causing my extractor to overheat after prolonged use...