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K-T1 Electronic Thrust meter
The K-T1 offers a quick and simple solution for thrust testing props on smaller, low powered models running on 2s packs. Thrust testing small motors is awkward and often innacurate, this is where the KT-1 comes in, simply hook it up to your ESC/lipoly and you can easily test different props to find the best set up, the meter also gives you motor RPM, total battery voltage and individual cell voltages, a great tool for setting up 3D shock flyers, micro EDFs and indoor models!
Features: LCD Screen Readouts: G/Thrust, Motor RPM, Total Lipoly voltage, individual cell voltage (2s only) Full colour instruction booklet adapter lead & strap
As far as i understand until now: You connect the device between Battery and ESC. Then you use a clip to connect to one of the 3 motor strands. It then measures the RPM and calculates the thrust for the setup Prop.
So: How big is the Prop database in this thing? Whats the maximum size? Minimum size?
As long as there is no scale included it's pure maths and then all same size props have same thrust. Not an proper solution. I use scale and K1 to measure rpm and kv.
Indeed, if there is no way to measure actual thrust, then this thing is not very useful.
Just some kind of unster/fishing scale to measure horizontal of vertical thrust would make it mean a lot more.
Thanks Norbert!
That leaves the question: Is it accurate.
If you have the actual RPM it should be quite accurate to calculate the thrust, shouldn't it? If the Prop has a higher efficency the RPM would be higher at the same AMP draw. So does this really help or is it as good as any online-thrust calculator?
you can't compare different probs whithout measure the thrust. BUT!! Lay your motor on a scale, press tara, let it run with different probs and note the measurement. BUT!!! Be careful. Not the best prob/motor combination on ground is the right one, because your modell has speed in the air. You must take a number bigger prop in the air that the relativ airspeed is the same.
Save your money. This item does NOT accurately measure the RPM. I have compared it to a high end optical RPM meter and it registers 15-16% high (i.e. at 10,000 RPM the meter registers 11,600 rpm). It also measures the voltage, but a multimeter does a better job. I recommend getting an optical rpm meter and a watt meter that measures voltage and amperage. This was a waste of $30.
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