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Razor 400 motocalc results vs tested results

Old 08-18-2003, 04:08 AM
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Default Razor 400 motocalc results vs tested results

I've learned so much from the community here I thought that I would add some info from my testing various props for my razor motor. Along with my testing I compared my results with motocalc to see what it had to say.

Here is my set up:
Razor rz400 brushless motor
Castle creations phoenix 25 esc
Thunder Power 2100 3cell pack ****
GWS D gearbox at 6.6:1 ratio
Astro flight micro meter

**** The bat was fully charged at the start with a voltage reading of 12.62. After running last test the bat voltage was at 12.46. Note that my altitude is about 2500 ft above sea level. I did not top off bat inbetween runs so results may be off a bit from a fresh charge! Props are listed in the order of testing.
First line will be results from my testing and the second line will be results from motocalc. I did not have a way to measure thrust, but I've included motocalcs thrust results.

GWS slowfly props:
9x7 6.3 71.1
4.3 46.1 9.4

10x4.7 6.5 74.4
6.3 46.8 12.1

10x8 8.3 92.5
6.3 67.5 13.6

APC props
10x7 6.5 75.4
6.0 63.7 14.0

12x6 8.77 96.3
8.8 92.4 23.3

Tornado 3 blade prop
10x6 7.41 83.6
7.1 74.8 18.7

Master electric
10x8 8.5 90.5
7.4 77.7 15.3

11x7 9.76 106.1
8.7 90.8 20.3

12x8 12.12 127.3
11.6 118.6 25.3

Hope this helps with some of your Eflight fun!
Old 08-18-2003, 12:50 PM
Greg Covey
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Default Razor 400 motocalc results vs tested results


This looks good, thanks.

I received my Razor 400 motor over the weekend and plan on putting it in my Potensky Eagle using a GWS EPS-300C (CS) 5.33:1 geared Speed 300 motor and a GWS 10x8 prop on a 3-cell Lithium pack. I'm expecting a 10-12amp draw at max throttle using short bursts only.

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