Himax 2812-850 Outrunner On 3s 1p 2200 Best Propeller For E-starter Gws - RC Groups
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Jun 14, 2005, 12:19 PM
agapornis

Himax 2812-850 Outrunner On 3s 1p 2200 Best Propeller For E-starter Gws


Any help please !
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Jun 14, 2005, 06:17 PM
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kensp's Avatar
Here are two choices with not much to choose between them. The GWS propeller unloads more as the speed increases.

APC 9x6 Slowfly

At 0 MPH
Motor Amps = 9.9
Motor Volts = 10.8
Input (W) = 106.4
Thrust (oz) = 23.7

At Top Speed = 39 MPH
Duration at Top Speed = 22 minutes
RPM at Top Speed 8,370
Efficiency at Top Speed = 80.6%


GWS 10x6 Direct Drive

At 0 MPH
Motor Amps = 11.5
Motor Volts = 10.7
Input (W) = 123.2
Thrust (oz) = 23.0

At Top Speed = 37 MPH
Duration at Top Speed = 23 minutes
RPM at Top Speed 8,300
Efficiency at Top Speed = 80.6%

Looking at these I would go for the APC 9x6 Slowfly as this will give more propeller clearance on take off and landing.

I think that a more cost-effective choice for the E-Starter would be the Himax 2808-980 and two 1200 mAh Cells. This would be US$ 46 cheaper, lighter and easier to keep within a normal soccer/ sports field boundaries.

Motor Amps = 6.1
Motor Volts = 7.1
Input (W) = 43.4
Thrust (oz) = 12.7

At Top Speed = 29 MPH
Duration at Top Speed = 20 minutes
RPM at Top Speed 6 223
Efficiency at Top Speed = 78.3 %

Ken
Last edited by kensp; Jun 14, 2005 at 06:30 PM. Reason: Spelling


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