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AXI2820 help

Old 03-23-2004, 04:57 AM
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fnp
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Default AXI2820 help

on 10-12 cells which is better an AXI 2820/10 or 2820/12. Thanks bye
Old 03-23-2004, 07:39 AM
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Matt Kirsch
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Default RE: AXI2820 help

Define "better."

12 cells is too many for the 2820/10. On 10 cells, both motors can be made to perform similarly, with different props of course. The 2820/12 will need a higher pitch and larger diameter prop to get the same thrust and speed.
Old 03-25-2004, 09:02 AM
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mumtaz
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Default RE: AXI2820 help

i would say that it is better to buy the 2820/10 as it is more versatile. It would take 12 cells but better on 10 cells as it gives better thrust to power ratio. it is more verastile because you can use it on 10 or even 8 cells.
Old 03-25-2004, 12:17 PM
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Greg Covey
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Default RE: AXI2820 help

I prefer to use the higher Kv version that uses lower cells which reduces weight.

My [link=http://www.gregcovey.com/wipa_firecat.htm]Wipa Firecat[/link] uses a 2820/10 motor.
Old 03-29-2004, 03:48 PM
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Default RE: AXI2820 help

How do you know what is to much amps/volts for the motor?? I have an AXI as well, I am working on a project and he gives me these AXI motors to try and see how they work.
Old 03-31-2004, 01:08 PM
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fnp
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Default RE: AXI2820 help

The reason I asked abt the 2820/10 and 12 was that when I was buying the 2820/10 the sales guy at nesail said that he prefers the 2820/12 as it gives more thrust. So I bought the 2820/12. now I want to know is that does the 2820/12 actually give more thrust than the 2820/10 on 10 cells.

Also, even Id like to know how do you know what is too much amps=volts for the motor.
Old 03-31-2004, 01:49 PM
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Greg Covey
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Default RE: AXI2820 help

Keith,

You can view the AXI specifications from the manufacturer [link=http://www.modelmotors.cz/index.php?id=en&nc=produkty_select&id_odkazy=m_ac]here[/link]. The maximum current level is slightly above the max. efficiency current rating. Since it is a grey area that depends upon time and how far above this you go, it is best not to push the motor much beyond specs. unless competing.

fnp,

The answer is no. In fact, on 10-cells, the 2820/10 produces more power than the 2820/12.

Do not confuse this scenario with what NE Sailplanes may have said because on 14-cells, you can't even use the 2810/10 and the 2820/12 has more power output than the 2820/10 can realistically produce.
Old 03-31-2004, 05:25 PM
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Default RE: AXI2820 help

ORIGINAL: Greg Covey

Keith,

You can view the AXI specifications from the manufacturer [link=http://www.modelmotors.cz/index.php?id=en&nc=produkty_select&id_odkazy=m_ac]here[/link]. The maximum current level is slightly above the max. efficiency current rating. Since it is a grey area that depends upon time and how far above this you go, it is best not to push the motor much beyond specs. unless competing.

fnp,

The answer is no. In fact, on 10-cells, the 2820/10 produces more power than the 2820/12.

Do not confuse this scenario with what NE Sailplanes may have said because on 14-cells, you can't even use the 2810/10 and the 2820/12 has more power output than the 2820/10 can realistically produce.
I understand what the manufacture posts about the specs, but if I hook up 2 7.2 volt batteries. How do I know how much ampage I put through the motor?

Also What do I look at to tell which AXI motor produces more torque. I need more torque and I get AXI motors from a friend (meaning I don't have to pay for the motor, jsut return it when I am done). He orders them direct from the factory. How do I know which AXI motor I need?

I hope what I asked makes sense???? Thanks in advance.

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