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HelicopterAerial Photography and Video › Thinking of changing motors orbit to xera
03-19-2009 04:34 PM  8 years agoPost 1
Sig Dawg

rrApprentice

Yorkton, Sask.,​Canada

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I am thinking of changing out my Orbit 30-12 (560 kv not heli expert) motor for one of the new xera motors on my logo 600. My setup is

Logo 600 3d
jazz 55
620 mm blades,
10S2P A123
1800 rpm at 85% tached
I think I have a 14 tooth pinion on there

When I land my orbit can get quite warm to the touch, sometimes even hard to hold on to. I keep hearing these Xera motors are barely warm to the touch upon landing, so I'm wondering if they would be a better fit.

Looking at the xera 4035/2.5y 480kv, or the 4035/2y 600kv.

Thanks

Jason

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03-19-2009 05:54 PM  8 years agoPost 2
CNCAddict

rrApprentice

Newport, N.C.

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The 4035 is way too big, you need to stick with the 4025 or 4030 max. Your battery is low voltage and pretty heavy, so it maybe best to go with the 4030/2y motor.

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03-19-2009 08:10 PM  8 years agoPost 3
Sig Dawg

rrApprentice

Yorkton, Sask.,​Canada

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Is the 4035 series for the 800mm birds?

I'll check the 4030/2y. Would it be better to go with a higher kv and lower tooth pinion, or a lower kv and higher tooth pinion? I'm looking for longest run times.

I'll have to check out the Xera website for specs on where the motors run the best.

Thanks

Jason

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03-19-2009 09:15 PM  8 years agoPost 4
CNCAddict

rrApprentice

Newport, N.C.

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If you're doing nice easy sport flying it's best to go with a low rpm and big pinion gear with a low Kv motor. The 4030/2y should get you long flight times with the 10s setup. You should run the motor at around 18,000rpm. Going with the 2.5y or 3y motor will get you a little more flight time and a quieter helicopter (big pinion and lower motor rpm) with a tiny bit more bogging (assuming the same governor setup).

Also, using too big a motor like the 4035 will decrease your flight time since it's heavier, and has higher no load losses (assuming same motor rpm).

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03-19-2009 09:34 PM  8 years agoPost 5
Sig Dawg

rrApprentice

Yorkton, Sask.,​Canada

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Thanks

Does the 18,000 rpm rule work for all your motors?

All this heli does is lift a camera, so I guess it is like really lazy sport flying, Not a lot of hard climbouts or anything like that. Fly up to about 400' snaps some pics, and fly down.
My trex 450 is for playing.

Jason

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03-19-2009 10:35 PM  8 years agoPost 6
CNCAddict

rrApprentice

Newport, N.C.

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Nah, just 18,000 for 10s2p A123's with the 4030/2y. If you are doing camera work I would recommend a lower rpm motor. I think the 4030/3y would be excellent for a cameraship if you can gear for such a low rpm. High rpm's are for high power output 3d flying, high efficiency and long life needs lower rpm.

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03-19-2009 10:51 PM  8 years agoPost 7
Griffo

rrVeteran

Melbourne /​Canberra, Australia

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I started a Xera thread over in the Mikado forums that you might be interested in. Starting off with flight data from the 4030/3y but I plan on trying other Xera's too. Anyone with flight data is welcome to post their graphs .

http://www.runryder.com/helicopter/t500228p1/

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03-19-2009 10:57 PM  8 years agoPost 8
Sig Dawg

rrApprentice

Yorkton, Sask.,​Canada

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So if I went with the 3y at a kv of 470, looking at 30 volts as lower operating voltage area on my batts I would be running approx 14,000 rpm on the motor and a 19 tooth pinion with the 153 tooth main gives me an approximate head speed of 1750 rpm at 100%. I may have to go with the 2.5Y or see if I can get a larger pinion.

Thanks CNCAddict

Jason

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03-30-2009 04:48 PM  8 years agoPost 9
Sig Dawg

rrApprentice

Yorkton, Sask.,​Canada

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I think I can get the 470 kv motor to work on mod 1 gearing. I can get a 15 tooth pinion and the 106 tooth main will allow me to get a headspeed of around 1800 quite easily. With mod 1 you can get down to 7:1 and the mod .7 gets you to 8:1 with currently available pinions.

Jason

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