How to slow down your Nat Geo Tumbler for cheap!
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- เผยแพร่เมื่อ 11 มี.ค. 2024
- This is a review of a cheap adjustable voltage power cable for the National Geographic Tumblers. It allows you to slow the tumbler down to the speed of any professional tumblers like a Lortone. This will work on any of their models but the one in the video is the Nat Geo Hobby Tumbler. I also tried it out on my Nat Geo Pro tumblers and it worked the exact same.
Here is the Amazon link for the power unit:
www.amazon.com/Belker-Adjusta...
Here is a link for the Tumbler used in this review:
www.amazon.com/NATIONAL-GEOGR... - แนวปฏิบัติและการใช้ชีวิต
Thank you! I was thinking about, like, changing the gear size, but I couldn't remember if that would actually work the way I wanted it to, and I was actually looking for different sized gear sets and came across your video. 🤦 I totally should have known I could just get an adjustable voltage adapter. I guess I just thought they didn't make them anymore.
Glad I could help!
Thank you for this, I just ordered one. Can’t wait to try it.
You're welcome! Thanks for watching!
Such a useful video, thank you
You're welcome! Thanks for watching
Great video!!! Ty
Thanks for watching!
Wow, what a great find!
I'm only partially smart about electricity... does limiting the voltage cause heat somewhere? Anything that you have noticed or worried about?
This is by far the best thing i've seen for this problem. I'm buying two and am thanking you a million times for making these little tumblers worth while!!
Well I'm far from an electrician but to my knowledge lower voltage wouldn't be an issue. (I've been issue and heat free for 3 months) Too much voltage would be where heat would be an issue but maybe keep a close eye on it the first day or two when you use it just to be safe.
You are fine to lower the voltage abit. But probably shortening its life if you do it alot. I think 9-9.5 volts is fine. But i would not go much below that.
Low-voltage lowdown. For an electric motor, torque changes as the square of the voltage applied. A 10% increase in voltage, for example, will boost torque 21% (1.1×1.1=1.21). Conversely, at 90% of rated voltage, the motor suffers a 19% reduction in torque (0.9×0.9=0.81). A more severe undervoltage condition, 20% below rated value, would reduce the motors torque to only 64% of rating (0.8×0.8 =.64). The effects are a 156% overload and catastrophic failure.
If torque decreases below the torque required by the load, the motor would stall. At that point, the only product of the motor is heat. However, a 100-hp motor, with locked rotor, becomes a 500kW resistive heater.
Add to that insultation lifespan in the motor decrease by half for every 10celcius its run. Severly undervolting an engine will probably hurt its lifespan, and might be a firehazard.
Cause if your motor stalls, you are left with an heater.
Nice vid. I save every power pack I come across. Just ran to my stash and boom the 2nd one I pick up was 6v/2amp with the correct plug already on it. Worked perfectly. Now maybe my rocks won't be so bruised and fractured looking and I can start to get a shine I hope.
Good luck! Im very happy with the tumblers