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Motor compatibilities

Old 01-01-2014, 08:32 PM
  #1  
shd3920
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Default Motor compatibilities

Are any of these motors compatible to a Park400 or Park450 motor? Or Eflite 400 or 450? Or could you give the approximate size equivalents for each?

http://www.ebay.com/itm/Hobbymate-Po...item1e7fe3fea4

http://www.ebay.com/itm/141064596649...84.m1438.l2649

http://www.ebay.com/itm/US-SHIP-Hobbymate-Slow-Flyer-Park-flyer-Power-Combo-Motor-ESC-Prop-Connector-/130993563576?pt=Radio_Control_Vehicles&hash=item1e7fd327b8

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=170834852209&ssPageName=ADME:X:AAQ:US:1123




Last edited by shd3920; 01-01-2014 at 08:40 PM.
Old 01-01-2014, 09:36 PM
  #2  
aeajr
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I will do a comparision between the first link and the eflight Park 450 and the HB2822. Seeing what I do you can compare the rest.


HB2822 Specification:

1800 Kv
2x 8060 props
Shaft Dia: ø3.00mm
Weight (about): 29g
Unload current: 0.8A
Max current: 10.5A
Lipo Battery: 2S-3S
Recommend Propeller: 8*6(Or 9*6)


This is the e-flite 450
Recommended Prop Range: 9x6 to 11x3.8 Slow Flyer or 10x5 to 12x6 Electric
Cells: 2–3 Li-Po or 6–10 Ni-Cd/Ni-MH
Continuous Current: 11 - 20A
Diameter: 1.1 in (28mm)
Idle Current (Io): .70A @ 8V
Length: 1.3 in (33mm)
Motor Design: Outrunner
Overall Diameter: 1.10 in (28mm)
Overall Length: 1.30 in (33mm)
890 kV
Shaft Diameter: .16 in (4mm)


First – the HB2822 does not give physical dimensions but we will presume it is 28 mm across and 22mm deep, less the length of the drive shaft. It is an 1800 kv motor with a maximum amp rating of 10.5 amps. It has a 3mm shaft.

The eflite 450 is also a 28 mm motor, but is 890 kV and has a max amp rating of 20 amps and a 4mm shaft.

So, no, these are not comparable motors. the e-flite is a much more powerful motor that can turn bigger props.
Old 01-04-2014, 11:59 PM
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Jetdesign
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The first things I look at when comparing motors are weight and kV. Weight is a good indicator of power capability, and kV tells you if the motors will spin a similar prop.

I say weight as opposed to the actual power rating for a reason - sometimes motors are over-rated, or at least the rating is the absolute max with no margin. If you have 2 motors both rated for 200W but one weights 20g and the other weighs 40g, the 40g motor will have a much better chance of handling waste energy (heat). It will stay cooler and therefore is likely to last longer. This is assuming they have the same kV and you use the same battery and prop.

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