Given the size of the bellows having a smaller air box at the top would have given it tremendous air pressure beneath the riffles but I can't really test it properly until I get it all setup.
Bellows puffer style drywasher plans
- Thread starter gcause
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Yes I agree that the benefit of having a smaller air box would be to increase the pressure , if for arguments sake the air box was way too big the air would compress a fair bit rather than push up through the resistance of the cloth and dirt . this obviously wouldn't be an issue with a blower because of the volume of continuous air.
Anyway started the build today in some spare time and am following the design of yours fairly closely but am making it up out of what's at hand ,the concept of attaching the riffle box and top of bellows directly onto the flat surface of the metal frame will make it easy to get good air seal and the clips will be easy also. I reckon I've got everything I need including motor, pully's and battery.
was wondering what the rubber off an old tractor tube would be like for the bellows? thoughts anyone?
cheers. flash
Anyway started the build today in some spare time and am following the design of yours fairly closely but am making it up out of what's at hand ,the concept of attaching the riffle box and top of bellows directly onto the flat surface of the metal frame will make it easy to get good air seal and the clips will be easy also. I reckon I've got everything I need including motor, pully's and battery.
was wondering what the rubber off an old tractor tube would be like for the bellows? thoughts anyone?
cheers. flash
Hey flashinthepan cant wait to see your build. Sounds like you have a retro build on yoir hands. I reckon rubber woukd absorb a bit of the pressure but I woukd expect it will depend on air mass available in the box. Guess you coukd build it amd find out, id probably gp for something a little more solid myself like leather or oiled canvas.
Where can I get a large pulley wheel like this one:
Keene are selling this kit for US$209 + Freight.
http://www.keeneeng.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=DW12C&Category_Code=DW
Surely a large pulley wheel doesn't cost that much?
Keene are selling this kit for US$209 + Freight.
http://www.keeneeng.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=DW12C&Category_Code=DW
Surely a large pulley wheel doesn't cost that much?
Id be hitting the markets mate I quite often see pulleys with the used tools. With that keene mate yiu get the whole setup inc motor that not bad really.
Just another thought I did see some measuring wheels very cheap recently think it was at bunnings. I would think a wheel designed to be rolled along the ground would be pretty sturdy.
Found this company in the USA
http://www.ebay.com.au/itm/100s-V-B...LH_DefaultDomain_0&hash=item5ae663eaf2&_uhb=1
US$30 + freight
Looking for an Australian supplier / manufacturer.
I know old Hoover washing machines used to have these large v belt pulleys in them.
http://www.ebay.com.au/itm/100s-V-B...LH_DefaultDomain_0&hash=item5ae663eaf2&_uhb=1
US$30 + freight
Looking for an Australian supplier / manufacturer.
I know old Hoover washing machines used to have these large v belt pulleys in them.
MJB
matt
Hey gcause,
Pulleys are readily available at most bearing supply shops, like CBC and SKF stores. You give them the size you want and they get it along with belts you may require.
Still, that Keene kit looks pretty good and takes all the hassle out of finding individual bits......if it was me, I would just get that kit.
Look forward to seeing pics of your blower as it progresses.
Cheers,
Pulleys are readily available at most bearing supply shops, like CBC and SKF stores. You give them the size you want and they get it along with belts you may require.
Still, that Keene kit looks pretty good and takes all the hassle out of finding individual bits......if it was me, I would just get that kit.
Look forward to seeing pics of your blower as it progresses.
Cheers,
Using a wiper motor would be the ducks nuts.
For those electrically minded use a PWM circuit driving a 30 amp electronic relay.
You would have all the speed control that you can use and does not draw much more amps to run.
I would use it to drive the high speed side of the motor as by past experience burning out the low speed side under load is quite easy too do as it gets hot.
Any way, Each to their own.
For those electrically minded use a PWM circuit driving a 30 amp electronic relay.
You would have all the speed control that you can use and does not draw much more amps to run.
I would use it to drive the high speed side of the motor as by past experience burning out the low speed side under load is quite easy too do as it gets hot.
Any way, Each to their own.
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Give blackwoods a call, theyve got mountains of engineering supplies. Otherwise you could pull one from an old powersteering pump, depending on the diameter you need.
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What is the name of the IPad app?
Looks like a handy tool to have!
Regards, Ned
Looks like a handy tool to have!
Regards, Ned
It's called RulerPhone.
It's very handy as you just place a credit card sized object onto the thing you want to measure and take a photo.
Then align the blue square in the app with the credit card sized object and it will then work out the dimensions of anything in the photo.
Here's the link to the free version. The free version is limited in the size it can measure but the paid version is only $5.
https://itunes.apple.com/au/app/rulerphone-free-photo-measuring/id290516007?mt=8
It's very handy as you just place a credit card sized object onto the thing you want to measure and take a photo.
Then align the blue square in the app with the credit card sized object and it will then work out the dimensions of anything in the photo.
Here's the link to the free version. The free version is limited in the size it can measure but the paid version is only $5.
https://itunes.apple.com/au/app/rulerphone-free-photo-measuring/id290516007?mt=8
Thanks guys I will check those options out.
G
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If it helps anyone iv noticed jaycar sell 12v motors with a gearbox 'they sell a lot actually.
Goldtarget
(AKA OldGT)
Any idea on price.... It's on the to do list give them a visit in store I mean
Ive looked at their motors before one was too small only put out 14rpm and and was 55rpm but pulled 14a. Bit rich for low torque.
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Thanks "Gcause" for the info on Rulerphone.
regards, Ned
regards, Ned
Been doing some more work on my Dry Washer. Got the legs on it. Hmmm that angle doesn't look right. :8
Now how should that hopper box sit on it, hmmm needs a steeper angle:
Heres how I attached the legs, I wanted to have adjustable legs and a good thing I did given that angle on my first go:
Ok thats a better angle:
Nope still need to go steeper on the hopper box:
Getting there slowly.
Now how should that hopper box sit on it, hmmm needs a steeper angle:
Heres how I attached the legs, I wanted to have adjustable legs and a good thing I did given that angle on my first go:
Ok thats a better angle:
Nope still need to go steeper on the hopper box:
Getting there slowly.
good work mate, love seeing that old beats coming to life. I was reading yesterday about the angle for bellows drywashers and apparently the accepted angle id 5 inches per foot. looks like your right on the money.
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