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Old Jan 16, 2007, 10:24 PM   #4982
I'm just a 2.5D Pilot
 
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Join Date: Dec 2005
Location: Fort Worth, TX
Posts: 610
My Ghetto thrust meter

So it’s still cold here, and I had to teach a technology class after school until Six. I had to do SOMETHING with my SL, so I setup this little thrust meter test. Is this even feasible?

I charged up my battery, set up two cameras, one on the scale, and another on the AstroFlight Watt Meter. I slowly advanced the throttle until full, then backed off at half for a bit before finishing. I took the difference of the 7.8oz it weighed and the amount it weighed while running. Is this even a credible experiment? I still don't know anything about the Watt Meter so any info would be helpful.

13.4 oz of thrust at 13.71A with 9,41V at full throttle

6.5 oz of thrust at 5.37A at half throttle (the stick was centered)

The props are cut down gws 4.5 x 3's

Here is the video link:
http://www.cakevideo.com/videos/RC%2...st%20Meter.wmv
Attached Thumbnails
  • Name: IMG_0749.jpg
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Description: My thrust-meter setup.  Very high-tech. My thrust-meter setup. Very high-tech. 61.6 KB · Views: 278

  • Name: IMG_0748.jpg
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Description: One camera on the scale.  I taped the SL to the scale so it would go wandering off. One camera on the scale. I taped the SL to the scale so it would go wandering off. 51.8 KB · Views: 198

  • Name: IMG_0750.jpg
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Description: Another camera on the Watt Meter. Another camera on the Watt Meter. 66.8 KB · Views: 195

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