Best 4S Lepton Motor?

[docjoe]

I'm looking into getting a new Lepton Motor since my Hyperion 3025 10T just died.

I hear great things about the Kora motors. Which one would be good for about 2600-2800 HS and the stock pinions.

I am running Evo 20 4S 3700 batteries. I'm looking into the Kora 15-14. Is this the one I need?

[rotodingo]

For 2800 HS you need the 15-12. Beside 15-12 will be perfectin this range with the new steel pinions from Revco. For 2600 a 22-23T is better with this motor.

Nicolas

[docjoe]

So about 2600HS with the 15-14 and 2800HS with the 15-12? is that right?

[jlr]

If I understand correctly, all the Kora 15-XX motors produce the same power, so the only difference would be K/v and gearing. If you don't want to track down special pinions, you may be better off getting the 15-14 and running the 24t. I think you could get 2600 or 2800 with either motor, it is just a matter of finding the right pinion (and keeping within the volt/amp limit of the motor).

One benefit of the 15-14 is it is rated for 5S per Kontronik where as the 15-12 is only rated to 4S.

I'm finishing up a Lepton running the 15-12 and I'm going to start w/ a 22t pinion, but I haven't spooled it up yet.

EDIT: I meant to mention that knowing what I know now, I would probably go with the 15-14 instead of the 15-12, but since I'm not planning on going beyond 4S and I now have 21-24t pinions I think I'll be happy w/ the 15-12. Once I can spool the thing up I'll let you guys know what HS I'm getting.

--Jeff

[docjoe]

Thanks Jeff,

That's good to know.

[rotodingo]

Jeff, you're wrong about 15-12 rating. Take a look inside the manual coming with the motor. It says 15-12 and 15-14 are rated for 5S. Kontonik web site says 4S for the 15-12 but manual says 5S. And the only obligation you have is to reed the Manual coming with the motor!

Nicolas

[andreat]

I run Kontronik Kora 15-14 with FP EVO20 4s 3700mAh NF and standard 24 pinion.
I get 2700HS at 76% on throttle (FF9)

[jlr]

Jeff, you're wrong about 15-12 rating. Take a look inside the manual coming with the motor. It says 15-12 and 15-14 are rated for 5S. Kontonik web site says 4S for the 15-12 but manual says 5S. And the only obligation you have is to reed the Manual coming with the motor!

Nicolas

Okay, I stand corrected! :oops: Thanks for pointing this out Nicolas. Regardless of whether Kontronik says it's rated for 5S, I should have mentioned that there are at least a few people here that are running the 15-12 on 5S.

The whole reason I went with the 15-12 is because its rated K/v is closest to what Hirobo recommends and I wanted to try and run the stock pinion.

--Jeff

[rotodingo]

Since we now have pinions from 19 to 26T (but no 25T) the 15-12 looks more like a logical choice to try HS from 2200 to 3000 in a good range for the ESC.

[Blade flappin]

Hi guys, as of matter of fact 24 and 26 tooth pinions are available from Hirobo. As for the 22 and 23 tooth pinions , they are never available from so called quality dealers . It's easier to run the 24 tooth and call it a day instead of waiting around for a Email weeks or even months later to find that you didn't make it in time to buy the last pinion one hour or so from the latest Email stating THERE IN.

[jlr]

It's easier to run the 24 tooth and call it a day...

I disagree. The only way to tune electric power systems is through changing the gearing. There are too many variables and, IMHO, it isn't worth damaging your equipment (running a low throttle % on an ESC that can't handle it) because you don't want to buy a pinion. I say cheers to AdrianM for stepping up, and jeers to Hirobo for not offering more choices to begin with.

--Jeff

[jlr]

Jeff, you're wrong about 15-12 rating. Take a look inside the manual coming with the motor. It says 15-12 and 15-14 are rated for 5S. Kontonik web site says 4S for the 15-12 but manual says 5S. And the only obligation you have is to reed the Manual coming with the motor!

Nicolas

Yep, just as Nicolas said, the manual lists the 15-12 as good for 3S - 5S. The manual also shows that all the 15-xx motors can handle up to a continuous 600w as long as you let it turn around 15,000 rpm (its rated maximum rpm).

--Jeff

[ckoelliker]

So which is the best motor for 4s and 3000 rpm. I will get whatever pinion that is needed.

[rotodingo]

Well, the Kora 15-12 is perfect for that with the 24T. As far a si know the Hiperion 3025-10 is perfect too with a 23T. But according to throttle curve some pilots used with the 24T i think that with a Jazz Esc, made for unlimited partial load, you will have very good results in governor mode.

Nicolas