Materials for dryblower

[Occasional_panner]

G'day Mike, yes the riffle's go in the opposite direction to a water sluice/banker.
That's the bit I'm not looking forward to making, the height and distance apart and shape needs to be right and apparently will vary between blowers. So I'm trying to come up with a way so they can be moved around easily.

If you are used to water processing, the dryblower is unusual.

 

[dam it]

G'day Mike, yes the riffle's go in the opposite direction to a water sluice/banker.
That's the bit I'm not looking forward to making, the height and distance apart and shape needs to be right and apparently will vary between blowers. So I'm trying to come up with a way so they can be moved around easily.

If you are used to water processing, the dryblower is unusual.

Hey Old Mate
If you need some pics or details riffle,s angle :ect
Give me a shout out
IMO your build is lookin GOOD to me :Y: :Y:

 

[Occasional_panner]

G'day Dam it, thanks mate.
Do you have one? yeah if you could do some pics of the riffles that would be great.

 

[dam it]

Yer I got one had it for nearly 2 years :Y:
I will PM you some Pics shortly

 

[Dirt Monster]

Would love to make one but wouldn't know where to start! Think I would have to brush up on Qld laws before anything. Top efforts OP. And dam it, pics here would also be good for people like moiself to get ideas. Hooroo cobbers

 

[dam it]

Would love to make one but wouldn't know where to start! Think I would have to brush up on Qld laws before anything. Top efforts OP. And dam it, pics here would also be good for people like moiself to get ideas. Hooroo cobbers

I cant remember were this came from I would think Whroo-Rushworth area

:Y:

 

[Occasional_panner]

Tiny bit more progress, framed up the hopper ready for mesh and made a simple feed gate.

 

[Occasional_panner]

Need to work out how to mount the hopper, then make the riffle tray.
I think the mesh is an OK size, I had some on the garage roof, it looks knackered, but it's just surface rust.

 

[Occasional_panner]

OK I made the riffle tray and used the black cloth from reeds which the keene dry blowers use, so there shouldn't be a problem there.
I don't seem to have a hell of a lot of power in the air volume, the travel of the bellows seems to be similar to others, I'll fiddle with that and the valve I suppose.
[video=480,360]https://www.youtube.com/watch?v=waoAeKZVR4c[/video]

 

[dam it]

Hey Dude :Y: the mesh looks the same as mine ( Keene 141 )
In the video ( above ) I to was a bit underwhelm I thought it would of had a lot more air movement
Keep at it you'll get there :Y: :Y:

 

[Occasional_panner]

I tried using a stiffer rubber valve, changed the size of the valve opening, with no difference.
Then I operated the bellows by hand and found it works much better if the bellows are raised fairly quickly, much faster that the wiper motor makes it run.

 

[limpalot]

Could try lenghtening the arm on the wiper motor for a faster action. Drill multiple holes for diff speeds.
Cheers LL

 

[Occasional_panner]

Thank's mate, I don't think the wiper motor has the speed to run it, lengthening the arm will give a longer stroke, but won't change the speed.
If you look at these ones, they seem to run between 140-200 rpm.
https://www.youtube.com/watch?v=ciytg64Czys
https://www.youtube.com/watch?v=82mqp0h02bo
https://www.youtube.com/watch?v=pVTWHxCHqjg

 

[ballarat_gold]

yeh, not enough ommph mate. I had a similar problem making the puffer style bellows. Does it work ok if you hand pump it fairly fast ?

You did check for air leaks yeh ?
The riffles trays sealed to the bellows box when fitted ?
The flap isnt allowing air out as it pushes up ?
The bellows is actually air tight ?

 

[Occasional_panner]

Hey B_G yeah, I checked all that, everything is fine apart from the power of it.
Operating by hand quickly it runs ok, so I'll just have to ditch the wiper motor.

That's a bugger I was hoping to use it this weekend.

 

[XIV]

Hahahaha at the rate you are going, your not going to get a chance to use it this summer.
As long as my gully stays dry, I have somewhere close you can test it out.

 

[Occasional_panner]

Maybe when I'm old and sitting at the retirement home I'll finish it and work all the garden beds.

 

[Occasional_panner]

I'm thinking about using this https://www.motiondynamics.com.au/united-350w-24v-dc-brushed-gear-motor-400-rpm.html
with a speed controller, set up like the pic.

 

[Occasional_panner]

New motor arrived today, I knocked up a makeshift linkage for it to test and it appears to be promising.
The riffles are way too big so that needs to be changed, and some supports for the underside of the riffles.
Hopefully I can get it running paydirt soon.
[video=480,360]https://www.youtube.com/watch?v=zoAG7vFEC8Y[/video]

 

[ballarat_gold]

looking the goods now mate.!