Building a motorized mini-trommel w/spray bar
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Thread: Building a motorized mini-trommel w/spray bar

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  1. #1
    us
    Dec 2012
    Concrete, WA
    Nokta FoRs Gold, a Gold Cube, 2 Keene Sluices and Lord only knows how many pans....not to mention a load of other gear my wife still doesn't know about!
    3,555
    6130 times
    Prospecting

    Building a motorized mini-trommel w/spray bar

    The trommel I built earlier this year works excellent for classifying
    the dry, desert material, but it's too big for me to be packing it up
    a creek along with my other gear. What I need is a much smaller
    version that can classify material to #8 mesh (1/8"), and it will need
    to have a spray bar so all the material gets washed well on the way
    through.

    Started poking around the shop, and came up with 2 round containers
    of the same dimensions. I think they held some kind of protean powder
    my wife uses, but no matter... they're mine now....

    Looks like the inner diameter will be about 5-3/4", and overall length
    about 18". Frame to be fabricated out of thick-walled 3/4" or 1/2" PVC
    pipe, using 1/4 all-thread rod to support the barrel. Spray bar either
    on top, or at the feed, and the motor will be top-mounted and use a
    simple belt to turn the barrel.

    Using the standard classifiers that sit over a 5 gal. bucket just wears
    me out, and all the shaking and spinning of the bucket gets me
    dizzieranhell, not to mention what it does to the back. (walking around on
    a rocky riverbank when you're dizzy and prone to falling is a bad, bad idea).
    To get two 3 gal. buckets classified down to 1/8" takes far too long, and
    I'd much rather spend that time running material through the sluice. (up
    here we don't have "dirt with some rocks in it", but rather it's "rocks with some
    dirt in it"!)

    With this small powered unit I can scoop the rocks/gravel right into it as
    I'm digging, and the classified material will drop right into a 3 gal. bucket.

    If I'm going to continue to work these creeks I've got no choice
    but to make some gear changes to help overcome problems this
    damnable disease causes. Ain't going to let the SOB beat me, and
    for every trick it comes up with (so far) I've been able to overcome
    by adjusting the process.

    Here's a shot of the barrel (test fit for the screen):

    Click image for larger version. 

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    Last edited by DizzyDigger; Jan 01, 2014 at 07:14 PM.
    Mike (aka Dizz)

    "If you love wealth better than liberty, the tranquillity of servitude better than the animating contest
    of freedom, go home from us in peace. We ask not your counsel nor your arms. Crouch down and lick
    the hands which feed you. May your chains set lightly upon you, and may posterity forget that you
    were our countrymen." ~~ Samuel Adams, 1776

    Dizzy's Super-Simple, Universal Rule of Forum Conduct: Don't be an ass.

  2. #2
    us
    Jan 2012
    Pinal Mountains,Arizona
    Garrett Groundhog-2012-1st MD. White's Goldmaster V/Sat-2nd-MD-2013 Tesoro Lobo-2015-3rd
    1,228
    520 times
    Prospecting
    DD, take a look at this for some ideas. I like the tool box as a carry aid and mounting process.

    DizzyDigger likes this.

  3. #3
    us
    Minning Tools: 12" Trommel, Royal Drywasher, Viper-Vac, Miller Table, Blue Bowl, Footprints, Google Earth, These Are Just Tools As You Still Have To Be On The Gold

    Sep 2012
    Arizona - Is there any other state worth visiting in the southwest?
    Fisher Gold Bug Pro, Nokta FORS Gold, Garrett ATX, Sun Ray Gold Pro Headphones, Royal Pick, Etc.
    2,033
    2188 times
    Prospecting
    DizzyDigger likes this.
    “He who builds their own equipment has a better understanding of what works and what does not work”



  4. #4
    us
    Jan 2012
    Pinal Mountains,Arizona
    Garrett Groundhog-2012-1st MD. White's Goldmaster V/Sat-2nd-MD-2013 Tesoro Lobo-2015-3rd
    1,228
    520 times
    Prospecting
    This one also. It is small, has different sizes of classification, and, it looks like it could have a handle come from each end, across the top.
    Like the old plumbers work boxes, tool boxes. It looks like he has a small 12 volt motor on the end of the straight shaft on the left side.
    You could use a cordless drill on the end with a slow speed. Use a solar panel,with a 110 volt inverter to charge the batteries.


  5. #5
    us
    Mar 2011
    212
    46 times
    I built this for around $200. Works great and I made it where I can interchange the classifier by being able to pull it off and slide another one on. It runs on a battery and is light.

    Trommel Build Sluice Question.
    DizzyDigger likes this.

  6. #6
    us
    Keith

    Feb 2013
    Glendale
    Gold Bug Pro, Gold Buddy drywasher, Black Magic, Pro Gold recirc, Custom highbanker/2.5" dredge, Roadrunner Member
    876
    355 times
    Prospecting
    Quote Originally Posted by roadrunner View Post
    This one also. It is small, has different sizes of classification, and, it looks like it could have a handle come from each end, across the top.
    Like the old plumbers work boxes, tool boxes. It looks like he has a small 12 volt motor on the end of the straight shaft on the left side.
    You could use a cordless drill on the end with a slow speed. Use a solar panel,with a 110 volt inverter to charge the batteries.

    I cannot believe hwo big that guys garage is. Does he park 747's in there? And, I want to know how much those buckets cost. They look just like 5 gallon buckets, but they must hold 75,000 gallons of material!! Where is the truck that hauls those badboys?
    Goldwasher likes this.
    Men are strong so long as they represent a strong idea they become powerless when they oppose it. Sigmund Freud

  7. #7
    us
    Minning Tools: 12" Trommel, Royal Drywasher, Viper-Vac, Miller Table, Blue Bowl, Footprints, Google Earth, These Are Just Tools As You Still Have To Be On The Gold

    Sep 2012
    Arizona - Is there any other state worth visiting in the southwest?
    Fisher Gold Bug Pro, Nokta FORS Gold, Garrett ATX, Sun Ray Gold Pro Headphones, Royal Pick, Etc.
    2,033
    2188 times
    Prospecting
    Quote Originally Posted by roadrunner View Post
    This one also. It is small, has different sizes of classification, and, it looks like it could have a handle come from each end, across the top.
    Like the old plumbers work boxes, tool boxes. It looks like he has a small 12 volt motor on the end of the straight shaft on the left side.
    You could use a cordless drill on the end with a slow speed. Use a solar panel,with a 110 volt inverter to charge the batteries.

    Boys and their toys. Must be a part of a Railroad layout. I have seen some really huge layouts and this would fit in those layouts...
    Last edited by AzViper; Jan 01, 2014 at 12:55 PM.
    Jimmydolittle likes this.
    “He who builds their own equipment has a better understanding of what works and what does not work”



  8. #8
    us
    FIRE...Financially Independent Retired Early. Poor but free!

    Feb 2013
    Deep in the redwoods of the TRUE Northern CA
    Teknetics Alpha 2000
    2,624
    4092 times
    Prospecting
    Quote Originally Posted by kazcoro View Post
    I cannot believe hwo big that guys garage is. Does he park 747's in there? And, I want to know how much those buckets cost. They look just like 5 gallon buckets, but they must hold 75,000 gallons of material!! Where is the truck that hauls those badboys?
    We should tell the Hoffman crew about this. Easier to get into the jungle AND it worked for over 3 minutes without breaking down or puking oil!
    We don't fight for gain. We fight for what is rightfully ours.

    Just another supporter of Land Matters http://www.mylandmatters.org/ The one stop place for mining matters on public lands!

    CA prospectors check here http://www.mylandmatters.org/Donate/Gift1.html

    A recent study found that there are just too many studies being done.

  9. #9

    Nov 2013
    Bazooka Gold Trap 48", Keene A51 sluices and a Number 2 Shovel baby!
    833
    1254 times
    All Types Of Treasure Hunting
    Quote Originally Posted by Jeff95531 View Post
    We should tell the Hoffman crew about this. Easier to get into the jungle AND it worked for over 3 minutes without breaking down or puking oil!
    You know they would find a way to mess that up. I'm envisioning Todd looking for a place to rest his girth *crunch*.

    I love the micro washplant!

  10. #10
    us
    Jan 2012
    Pinal Mountains,Arizona
    Garrett Groundhog-2012-1st MD. White's Goldmaster V/Sat-2nd-MD-2013 Tesoro Lobo-2015-3rd
    1,228
    520 times
    Prospecting
    Here is a short and better video of the trommel and the way it is built.
    Since I install solar systems on people's houses and malls maybe I should become a vender here and sell solar items for all the things we need.
    Maybe I will do a poll. For small panels, the inverters, charge controllers, and 12 volt or 24 volt motors.
    What do you guys think.

    DizzyDigger likes this.

  11. #11
    us
    Minning Tools: 12" Trommel, Royal Drywasher, Viper-Vac, Miller Table, Blue Bowl, Footprints, Google Earth, These Are Just Tools As You Still Have To Be On The Gold

    Sep 2012
    Arizona - Is there any other state worth visiting in the southwest?
    Fisher Gold Bug Pro, Nokta FORS Gold, Garrett ATX, Sun Ray Gold Pro Headphones, Royal Pick, Etc.
    2,033
    2188 times
    Prospecting
    Mike that video I posted of that small 4" pipe trommel moves the classified paydirt very well. Here is the updated version of that first trommel I posted... Should give you some great idea's on a small portable trommel...

    I can see a lot of mini trommels being made from this design and affordable at that. You know me instead of using mesh I would be drilling that PVC out. If anyone wants my drilling template pm me your email address.

    Last edited by AzViper; Jan 01, 2014 at 09:41 PM.
    DizzyDigger likes this.
    “He who builds their own equipment has a better understanding of what works and what does not work”



  12. #12
    us
    Dec 2012
    Concrete, WA
    Nokta FoRs Gold, a Gold Cube, 2 Keene Sluices and Lord only knows how many pans....not to mention a load of other gear my wife still doesn't know about!
    3,555
    6130 times
    Prospecting
    Thank you for the awesome links and video's...that'll surely help! (the beer I'd like to buy ya!)


    The ones in the video's are substantially more robust in design than what
    I am planning for, but there's some damn good ideas in there too.

    My ultimate goal for the trommel is to have it mounted above a Gold Cube,
    so material can go directly from being dug to feeding the GC. I'll need to
    build a slide for the trommel tailings to slide away from the GC, and the
    water feed from the 2000 GPH bilge pump will be split between the GC and
    the Trommel.

    As is typical for my projects, it'll take some time before it's all together,
    but in the end I'm hoping to have small, gold catching plant that won't
    miss so much as a flypoop...
    Mike (aka Dizz)

    "If you love wealth better than liberty, the tranquillity of servitude better than the animating contest
    of freedom, go home from us in peace. We ask not your counsel nor your arms. Crouch down and lick
    the hands which feed you. May your chains set lightly upon you, and may posterity forget that you
    were our countrymen." ~~ Samuel Adams, 1776

    Dizzy's Super-Simple, Universal Rule of Forum Conduct: Don't be an ass.

  13. #13
    us
    Minning Tools: 12" Trommel, Royal Drywasher, Viper-Vac, Miller Table, Blue Bowl, Footprints, Google Earth, These Are Just Tools As You Still Have To Be On The Gold

    Sep 2012
    Arizona - Is there any other state worth visiting in the southwest?
    Fisher Gold Bug Pro, Nokta FORS Gold, Garrett ATX, Sun Ray Gold Pro Headphones, Royal Pick, Etc.
    2,033
    2188 times
    Prospecting
    Quote Originally Posted by DizzyDigger View Post
    Thank you for the awesome links and video's...that'll surely help! (the beer I'd like to buy ya!)


    The ones in the video's are substantially more robust in design than what
    I am planning for, but there's some damn good ideas in there too.

    My ultimate goal for the trommel is to have it mounted above a Gold Cube,
    so material can go directly from being dug to feeding the GC. I'll need to
    build a slide for the trommel tailings to slide away from the GC, and the
    water feed from the 2000 GPH bilge pump will be split between the GC and
    the Trommel.

    As is typical for my projects, it'll take some time before it's all together,
    but in the end I'm hoping to have small, gold catching plant that won't
    miss so much as a flypoop...
    I would think using a 4" or 6" PVC for your trommel tube would be perfect for the Gold Cube
    DizzyDigger likes this.
    “He who builds their own equipment has a better understanding of what works and what does not work”



 

 

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