12 INCH TROMMEL BUILD

Boy I have been away for awhile and have receive two PM regarding my trommel of which I replied. Hope everyone is AOK. Things have been rough the last 4 weeks. The corporation laid off 450 people in phases. I made it down to the last 60 and was shown the door. Maybe in a few months I will be called back. Been very busy installing all new ductwork in the house and a new 16 seer heat pump package on the roof. Move 80 tons of rock and did a bunch of paver work and finely turn the backyard into yard to use.

I have continued my drone flying and it has become yet another hobby for me that has really taken a turn for me. Here is my latest work here in Arizona. Filmed in 4K and will be shown at a few theaters once they open back up. copy and paste the URL... (www.youtube.com/watch?v=a_fayaKJf7k}

a3.jpg a4.jpg a2.jpg a1.jpg
 

Amazon Forum Fav 👍

Treasure of Victoria Peak - Grab it through Amazon!
Last edited:
Yay :hello2:

Good to hear from you Viper. I moved to AZ last year, love it here.

GG~
 

Hi Goodguy and Reed. I went in for a back injury and left with a heart condition. I am scheduled for heart surgery March 3rd. The DR. is going to enter and artery in my groan and into the heart to map the heart during a 6 hour surgery. Then they will set a course to correct the heart to get the bottom and top chambers in sync with each other. Hope the two of you and the rest are doing great... Keith
 

AzViper said:
Hi Goodguy and Reed. I went in for a back injury and left with a heart condition. I am scheduled for heart surgery March 3rd. The DR. is going to enter and artery in my groan and into the heart to map the heart during a 6 hour surgery. Then they will set a course to correct the heart to get the bottom and top chambers in sync with each other. Hope the two of you and the rest are doing great... Keith
Click to expand...

Gosh that sounds scary. I hope you fare well and bounce back easily!
 

AzViper said:
Hi Goodguy and Reed. I went in for a back injury and left with a heart condition. I am scheduled for heart surgery March 3rd. The DR. is going to enter and artery in my groan and into the heart to map the heart during a 6 hour surgery. Then they will set a course to correct the heart to get the bottom and top chambers in sync with each other. Hope the two of you and the rest are doing great... Keith
Click to expand...

Wishing you all the best and a speedy recovery!
I will be keeping you in my thoughts and prayers.

GG~
 

Feel fortunate that they caught the coronary issue... a real showstopper if undetected. "IVEY" and AO did a trick on me, and I'm a vegetarian, nonsmoker, drink lightly and exercise. Wish you the best, I've been there, no fun, but get the plumbing attended to.


Simplicity, clean lines and function are great. When do you plan on letting the world purchase your great idea as a finished product. The only thing that I will suggest is have a CNC machine drill the classifier holes. Faster, very accurate, and gets done rapidly at minimal cost compared to the manual methodology presently used. I've been using a cnc router for years to make precision molds for air ejection molds.
 

Last edited:
AzViper said:
This thread has gotten very large and you will need to work through all the pages to view all the images of this build. The project started out to be completed quickly but family and medical issues popped up during the course of the build. Each of the 1434 holes were drilled by hand. This allowed for a much stronger cylinder over using expanded metal. The classifying area is much smaller than others used. More of the cylinder was reserved for breaking up and cleaning before heading to the classifier. Here are updated photos of the finished trommel.



I will begin my trommel build soon. Been gathering ideas and have come up with a plan. I am a believer that the classification area does not need to be all that large. The idea is to wash and tumble the rocks/dirt prior to the rock/dirt arriving at the classification area. Furthermore The spray bar will be mounted inside the cylinder so that the rocks get washed properly while 3/4" angle iron welded in the solid section of the cylinder as shown in the diagram below. Using this method will allow the rocks to fall away while still agitating the rocks. There will be no issues with rocks climbing the walls of the cylinder due to centrifugal force while maintaining a cylinder RPM between 18 and 30 RPM's due to the RPM of the engine. My gear reduction will be, Engine 2" pulley to a 12" pulley, then a 1.625" sprocket to a 14.69" sprocket. At 1000 engine RPM the cylinder will rotate 18.5 RPM's. At 1500 engine RPM's the cylinder will rotate at 27.5 RPM's.

The cylinder will have 1/2" holes drilled in this configuration. 3/4 inch angle iron will be welded to the inside..

I picked up the rolled 1/8" cylinder. Will use the drill guide to punch mark where the holes will need to be drilled. The solid rolled steel cylinder will be strong due to its solid design and not made from 3 separate pieces of metal. After reading the reviews on the Predator 6.5 HP engine in the go kart forums it was a no brainer not to try the motor, if it does not work out then a Honda will be put in its place. Picked it up for $79.00 new.


The 14" sprocket, 2" sprocket, 2" pulley, 12" pulley, 3/4" flange bearings, roller blade wheels are on the way. Everything else I can pick up locally. I have all the square tubing in the shop. Hopefully I can begin soon. I have a poker table to finish up for a client this next week.

Here is a nice RPM / Pulley Calculator. Very easy to use. Just enter data into three of the four boxes to arrive either pulley size or RPM whatever you choose. If you need to use a secondary step-down reduction of RPM's make sure you use the RPM from your first calculation to get your final RPM. You can also download the calculators so it runs from your computer. EXAMPLE: In this example I knew my engine RPM, sprocket size, and pulley size. The calculator calculated my final cylinder RPM.

UPDATE: I added a new calculator for RPM's the old calculator was removed by the designer.

RPM CALCULATOR

Click to expand...
well done i send you some photos from one i build a few years back
 

Attachments

  • 20160412_162858.jpg
    20160412_162858.jpg
    1.3 MB · Views: 46
  • 20160414_132648.jpg
    20160414_132648.jpg
    1.7 MB · Views: 47
  • 20160502_090241.jpg
    20160502_090241.jpg
    1.6 MB · Views: 47
  • 20160502_090251.jpg
    20160502_090251.jpg
    1.5 MB · Views: 43
EKG said:
well done i send you some photos from one i build a few years back
Click to expand...
Any dimensions?
What size is the drilled tubing?
Any updates on how it works?
 

You must log in or register to reply here.

THANK YOU FOR THE NEW TROMMEL FORUM!!!!!!!

Next Thread ➡️

Top Member Reactions

Users who are viewing this thread

Total: 3 (members: 0, guests: 3)
High Plains Prospectors

Latest Discussions

Back
Top