j hancock Posted March 25, 2019 Share Posted March 25, 2019 This rig uses a variation of a gravity dump. Release the catch while loaded and slam on the brakes and the bed dumps the material. Go in reverse and hit the brakes and the bed will reset. A couple of videos. It is a single function vehicle so as hydraulics improved for the construction equipment industry, a multi-use wheeled loader would run circles around a Dumptor. https://www.youtube.com/watch?v=siGtpP2biwg https://www.youtube.com/watch?v=wnTjY6EDVHU Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/56348-koehring-dumptor/ Share on other sites More sharing options...
Hobert62 Posted March 25, 2019 Share Posted March 25, 2019 I could imagine a few of them running around a jobsite could get pretty hectic. Quote Link to comment https://www.bigmacktrucks.com/topic/56348-koehring-dumptor/#findComment-418974 Share on other sites More sharing options...
carlotpilot Posted July 23, 2019 Share Posted July 23, 2019 little newer version than what i remember but same idea , that thing would rattle your teeth when the bed slammed back empty Quote Link to comment https://www.bigmacktrucks.com/topic/56348-koehring-dumptor/#findComment-428522 Share on other sites More sharing options...
Steamcrane Posted February 23, 2020 Share Posted February 23, 2020 I have posted a new video of Howard's Dumptor after restoration and running well. https://youtu.be/-IYIML4pTr4 Dave Steamcrane Quote Link to comment https://www.bigmacktrucks.com/topic/56348-koehring-dumptor/#findComment-443567 Share on other sites More sharing options...
j hancock Posted February 24, 2020 Author Share Posted February 24, 2020 Always interesting to see one in action. Looks like running one could be a very long day! Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/56348-koehring-dumptor/#findComment-443634 Share on other sites More sharing options...
Red Horse Posted March 18, 2020 Share Posted March 18, 2020 On 2/24/2020 at 9:58 AM, j hancock said: Always interesting to see one in action. Looks like running one could be a very long day! And I would imagine that "back in the day" , they were being loaded by cable shovels or backhoes. Add the stress of watching that bucket swing toward you-then again back then, operators were "operators"😎 Quote Link to comment https://www.bigmacktrucks.com/topic/56348-koehring-dumptor/#findComment-445922 Share on other sites More sharing options...
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