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Post by diverdon on Aug 8, 2018 18:01:05 GMT -8
Not that I needed more steel 72s or Scuba tanks in general, but I guess having 40+ good tanks isn't enough  This year I had a few anniversaries (hydros) coming up so I did a quick visual and it seems I was the recipient of some wet fills somewhere along the line  Needing 6 tumbles (possibly more) got me thinking that I need my own tumbler. Well, they're really not that hard to make so here's my go at it. JB, would you have done anything differently? youtu.be/cvVEczObsUU |
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Post by nikeajax on Aug 9, 2018 8:11:06 GMT -8
 DD, very nice, but not Rube Goldberg enough, if you replace that electric motor with with a dog on a treadmill and a sausage just out of his reach, you might have something I'd use! JB |
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reidar
Regular Diver
Posts: 48
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Post by reidar on Aug 9, 2018 18:09:39 GMT -8
Nice!
Could be used for tumbling other stuff too if you replace the tank with some sort of canister.
Would that speed controller work on a fan/blower/hoower as well?
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Post by herman on Aug 10, 2018 3:14:59 GMT -8
Nice to see how it came out Don.
reidar, no it would not. The tread mill motor is DC, usually with a 0-90vdc input. Most of the fan type motors are induction type AC motors and will not work with any kind of speed controller.....well, they CAN be controlled but it's a lot more complicated and not worth the effort.
I have seen some vacuum/hoover type motors that use brushes (as part of the motor design), those can be easily controlled with a variable speed controller but it is a different type than used on a tread mill. For this project, it's unlikely they would work as they tend to be low torque types.
For a project like this, the tread mill motor is perfect, most others are not. I am thinking that auto window motors might work well for this project. Low speed with a built in gear reducet, lots of torque and easy to find. Simple variable or stepped (ie just a high and low speed) DC power supplies are easy to buy or build. They can be easily found at auto salvage yards or on line auto parts houses.
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Post by surflung on Aug 10, 2018 7:53:16 GMT -8
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Post by cnotthoff on Aug 10, 2018 9:01:32 GMT -8
Friend of mine in the SF Bay Area has a nice tank tumbler that he built years ago. He doesn't use it or many of the steel tanks in his garage. All are available to anyone interested. Give me a holler to arrange pick up.
Good dives,
Charlie
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Post by nikeajax on Aug 14, 2018 14:30:15 GMT -8
One of the advantages of living in a HUGE metro area: $15 hydro's and 5bux fer a tumble  JB |
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