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Gold Prospecting
Do It Yourself (DIY) Projects
Bellows Dry Washer Build
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<blockquote data-quote="brimotimp" data-source="post: 556883" data-attributes="member: 18037"><p>Hey everybody, but especially Dave and Nightjar, I am building a wooden bellows type dry blower, and I am hoping to have it finished shortly so I can take it to WA when the borders eventually reopen. My riffle tray is 830 x 300 and the bellows is the same size. What stroke should I aim for on the bellows. Dave seems to be maybe 200mm, but Nightjar's small aluminium one is perhaps half that. And what speed should I be aiming for on the 12v windscreen wiper motor. Most seem to have a maximum speed of about 75 rpm. I was going to use a lever system similar to Dave's.</p><p></p><p>Simon</p></blockquote><p></p>
[QUOTE="brimotimp, post: 556883, member: 18037"] Hey everybody, but especially Dave and Nightjar, I am building a wooden bellows type dry blower, and I am hoping to have it finished shortly so I can take it to WA when the borders eventually reopen. My riffle tray is 830 x 300 and the bellows is the same size. What stroke should I aim for on the bellows. Dave seems to be maybe 200mm, but Nightjar's small aluminium one is perhaps half that. And what speed should I be aiming for on the 12v windscreen wiper motor. Most seem to have a maximum speed of about 75 rpm. I was going to use a lever system similar to Dave's. Simon [/QUOTE]
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Gold Prospecting
Do It Yourself (DIY) Projects
Bellows Dry Washer Build
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