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
Yabby pump attachment for loaming and crevicing
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="gcause" data-source="post: 36390" data-attributes="member: 1497"><p>Hey mbasko you may be right but I figured since gold is 19.3 times heavier than the equivalent water volume which would be going into the yabby pump along with the materials that it would fall out of solution into the trap and I would rely on gravity to do the work for me as when I am standing the hose is always higher than the bucket. </p><p></p><p>I am only trying to capture the heavies so I don't mind the lighter stuff going back out on the empty stroke as I am using it as a way of classifying the materials. The first level of classification is the nozzle as I have gone from 50mm on the opening of the yabby pump down to 20mm. The second level of classification is the gravity trap for the heavies. The third level is done by my Highbanker.</p><p></p><p>It's a prototype so we will have to wait to see if there is drawback on the fill stroke I am sure there would be some but I am hoping the material will be far enough down the hose that it won't matter. I think drawback is going to be more of a concern when I am using the short nozzle and the sampling pot but again I am hoping gravity will do its thing for me there.</p><p></p><p>I will let you know how I go, hoping to get a chance to try it out in a creek bed on the weekend. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="gcause, post: 36390, member: 1497"] Hey mbasko you may be right but I figured since gold is 19.3 times heavier than the equivalent water volume which would be going into the yabby pump along with the materials that it would fall out of solution into the trap and I would rely on gravity to do the work for me as when I am standing the hose is always higher than the bucket. I am only trying to capture the heavies so I don't mind the lighter stuff going back out on the empty stroke as I am using it as a way of classifying the materials. The first level of classification is the nozzle as I have gone from 50mm on the opening of the yabby pump down to 20mm. The second level of classification is the gravity trap for the heavies. The third level is done by my Highbanker. It's a prototype so we will have to wait to see if there is drawback on the fill stroke I am sure there would be some but I am hoping the material will be far enough down the hose that it won't matter. I think drawback is going to be more of a concern when I am using the short nozzle and the sampling pot but again I am hoping gravity will do its thing for me there. I will let you know how I go, hoping to get a chance to try it out in a creek bed on the weekend. :) [/QUOTE]
Verification
Post reply
Gold Prospecting
Do It Yourself (DIY) Projects
Yabby pump attachment for loaming and crevicing
Top