Mechanical Advantage is the founder, designer and manufacturer of the Drum Doctor. This machine is designed to repair channelizer drums on or off the worksite. This labor-saving device reshapes damaged drums from the inside. The Drum Doctor was designed to be a low cost solution to drum replacement. We offer a manual and pneumatic version to best suite your current operations:

  • The manual version is a cost effective solution to handle low-volume operations and works best on light duty drums. This version uses the weight of the operator to drive the machine and requires no external power source.
  • The pneumatic version is great option for high volume jobs and to reshape heavier-duty drums. This version uses air cylinders to power the machine and requires access to an air compressor.


  • Simple one-person operation (illustrated below) 
  • For use on or off the worksite 
  • Accommodates all standard channelizer drums 
  • Quickly mounts to any standard two-inch hitch receiver 
  • Adjusts to accommodate various vehicle and worker heights 
  • Durable all-steel construction with powder coated, high-visibility finish 


Step 1: Place damaged drum over the Drum Dr.

Step 2: Press down on drum and push forward to activate the arms to expand from the inside. Rotate drum as necessary.

Step 3: Remove repaired drum and replace on job site or back into inventory.




Model Number DD_00100 DD_00200
Dimensions (HxWxL) 21 x 18 x 67” 21 x 18 x 72”
Weight 59 lbs. 65 lbs.
Air Compressor (not included) N/A 100 psi
Unit Price $995.00 $1,595.00