Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Charts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Gold Prospecting
Do It Yourself (DIY) Projects
Bellows puffer style drywasher plans
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Prospecting Australia:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="G0lddigg@" data-source="post: 79156" data-attributes="member: 357"><p>The one things i learned from trying different riffles was that the higher they are the further apart they need to be and vice versa, they need some angle to allow material to jostle around just like that of a sluice on the underside. </p><p>I know i draw like a 3 year old but i hope this makes sense, the first three riffles here are evenly spaces and of the right height to restrict the airflow and cause a constant exchange, the material is also pushed upwards and back into the flow which makes for a waterflow effect and moves lights out of the box, number 2 is 90 degrees and has the right space but needs high feed to maintain exchange if you stop feedimng for too long with this setup your material will built up like a shelf once a clearway for the air-pressure has been established. number 3 the riffles are too low and again needs high feed rates to bloack and even out air to get thiongs jostling. </p><p></p><p>all this theory goes out the window when you introduce bellows thought because they use a puffing action to lift material, </p><p></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/357/1400816081_riffles.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="G0lddigg@, post: 79156, member: 357"] The one things i learned from trying different riffles was that the higher they are the further apart they need to be and vice versa, they need some angle to allow material to jostle around just like that of a sluice on the underside. I know i draw like a 3 year old but i hope this makes sense, the first three riffles here are evenly spaces and of the right height to restrict the airflow and cause a constant exchange, the material is also pushed upwards and back into the flow which makes for a waterflow effect and moves lights out of the box, number 2 is 90 degrees and has the right space but needs high feed to maintain exchange if you stop feedimng for too long with this setup your material will built up like a shelf once a clearway for the air-pressure has been established. number 3 the riffles are too low and again needs high feed rates to bloack and even out air to get thiongs jostling. all this theory goes out the window when you introduce bellows thought because they use a puffing action to lift material, [img]https://www.prospectingaustralia.com/forum/img/member-images/357/1400816081_riffles.png[/img] [/QUOTE]
Verification
Post reply
Gold Prospecting
Do It Yourself (DIY) Projects
Bellows puffer style drywasher plans
Top