Trommel build - start to finish with results // E69

We decide to build a rock trommel with a gasoline engine and some pulleys so we can separate soil from rock and harvest our own road material on our homestead. To build our trommel, we use two 55-gallon steel barrels lined with wire mesh (or welded wire) as the trommel and powered by a 79cc Predator engine. We think outside the box and make some pulleys our of ordinary solid rubber tires you find at most discount stores along with some v-belts to apply the engine torque at the proper RPM to operate the trommel.

Episode 69:
0:00 - Overview
2:46 - Making the drum
9:46 - The frame
15:05 - Components
19:28 - Making pulleys
27:20 - Making pulley mounts
36:43 - Mounting the engine
40:32 - Initial test
42:40 - Tension idler
46:34 - Calculate pulley RPM reduction
50:46 - Adding screen to the trommel drum
55:48 - Running the trommel
61:59 - Outtakes

Pulley RPM calculator: https://www.blocklayer.com/pulley-bel...
Harbor Freight engine:https://www.harborfreight.com/3-hp-79...
55 gallon barrel: https://www.ruralking.com/metal-trash...
10 inch tires: https://www.tractorsupply.com/tsc/pro...
6 inch tires: https://www.tractorsupply.com/tsc/pro...