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WTS: Thompson Drum Greaser Tool


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There was a member on another forum that was looking for a drum greasing jig, and since I needed to grease up a few of my drums, I decided to redesign a better jig.

What I'm selling is my 6th iteration before I tested it on my drums. I attached a lot of photos to ensure you know what you are going to get. Only exception is the bottom plug I don't show the latest design where I added a screw to prevent shear damage to the parts.

What I like about my new design is that I have the rubber fittings are attached to the parts, hence no need to deal with loose rubber seals.

The top rubber seal is recessed into the top cap. The bottom rubber seal is captured on the bottom plug.

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If you didn't know, new drums from places like Numrich or Kahr do not come with grease in the rotors. These rotors can not be disassembled so this tool was designed to push grease down the shaft where it disperses within the rotor.

Note that my design is by far not a new concept.. many have been built by other people, but I haven't seen one of these being sold for a long while. Typically I see them made out of a pipe cap.

I have tested the new design on a couple of new Taiwanese aftermarket drums I had in the closet, and it worked flawlessly. There were no leaks on the plug side or cap side. It filled the rotor up with grease, and it leaking out all the areas as expected. Turning the rotor even causes more grease leak out as it compresses within in rotor. Just note that you will have to wipe off grease a few times during use after filling.

You do need to supply your own C-Clamp and a grease gun that will attach to a standard grease fitting. Both of which I believe you can buy from Harbor Freight for cheap if you don't have one. Harbor Freight C Clamp, model 37850/62139, will work with my jig. That is what I'm using in my photos.

I recommend large C-clamp or a deep throat C-clamp so you don't have to disassemble the drum. I believe this C-Clamp from Harbor Freight should work, but any C Clamp that fit across the drum will work.

https://www.harborfreight.com/5-inch-deep-throat-u-clamp-45916.html">https://www.harborfreight.com/5-inch-deep-throat-u-clamp-45916.html

Price: $70 shipped via USPS Priority Mail

I take check, money order, PayPal (Friends & Family or you pay the fee), Venmo, or Zelle.
PM me on the method you wish to pay.
All funds must clear before shipping.

Bottom View
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Clamped.
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When properly done, the grease comes out of the small openings.gvDHTlk.jpg?1

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Top view after greasingWvPak0S.jpg

 

Bottom view after greasingpsZdh81.jpg

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Edited by Ryo
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  • Ryo changed the title to WTS: Thompson Drum Greaser Tool
  • 1 month later...

BTT.

Continuous improvement:
I modified the bottom greaser to have more support. One of my customer I believed over tighten the clamp and likely bumped it, causing the bottom piece to shear apart. I redesigned it with a metal screw so it would not happen again. First redesign of the bottom part, and it looks good.

Edited by Ryo
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