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Yeah looking at how low the amps coming out of the charger were I know it could work but its definitely not what the machine is trying to pull so it will run possibly slower most likely at the pump making the thing very hard to balance out as hard as it already is to tune one to work perfect. Anyways I ended up getting a battery and a charger to charge the battery as I use it just to make sure Im always getting the power its asking for. After using the thing and playing with the speed control I realized how sensitive it is and that there is no way around running the thing short of power. I couldnt even tell if the speed control was up or down changing it because the speed is barley noticeable, I had to draw a mark on it and time its rotation it ended up being 1.3 second difference for a rotation or something like that. The thing is going to be fun to play with and any body that would like to try it out with there concentrates write me a message. I have no problem with letting someone use it, it's good practice for me anyways. At the moment I dont have cons to practice with so I would love to get it down perfect for when I can start using it efficiently
Here is my Desert Fox i got back in 05 (06-21-05 to be exact....lol) and i added a 12V-5A Output plugin AC Adaptor but i too have the same problem you are haveing (have since i got the machine) From quote above:"I couldnt even tell if the speed control was up or down changing it because the speed is barley noticeable"...why pay $20 more for a speed control if it doesn't do just that...lol..well anyways i don't use this hardly at all...have only used it like acouple of times because it's such a pain to setup and cleanup...i only have like a pan of cons every outting and i do cleanup the day after so i just pan them instead (it's faster that way) but i will always keep it because i have always liked the way they run (have ever since i got it and saw one at the Denver gold show back in 2002) so i will keep it and use it for like backpack in hard to reach areas and also for what it's named for "The Desert" for sampleing lol.
Click to view attachmentP.S. Here is a flyer i got with the machine and just found...only 10% reduction huh......well maybe that's why we can't seem to tell the difference...idk but it's not worth the extra $20.....oh well.
The plugin one they sell is only 3amp vs. mine is 5...not a big difference but it doesn't blow it up.
Click to view attachment