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Other › Doubt on Bert Kammerers Logo 600 Setup
04-06-2011 11:22 AM  6 years agoPost 1
ITManuel

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Brixen, ITALY

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In the following video you can see Bert Kammerer flying a Logo 600 on 10S with XERA 4030-560 with an CC ICE 120 HV and 12 tooth pinion with amazing performance. http://www.youtube.com/watch?v=gYOlOcFwDEQ.
In the video he says that he is running a headspeed of 2250rpm. When i’m trying to do a setup of my ESC with the CastleLink Software with Bert’s Setup (10S Battery / 560 kV motor / 8 pole motor/ 106 Main gear/12 teeth pinion), i’m not coming on a maximum headspeed of about 2000rpm, an i have to go with an 14 tooth pinion to reach the 2250 rpm, so I do not really understand how he can run this setup with this performance!?!

Logo 600 - Vbar 5.0

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04-06-2011 12:43 PM  6 years agoPost 2
povern

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LF, MN

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He is not using the set RPM mode on the gov. He talked about that on one of the Inside Heli podcasts.

Screw It, I'm gonna fly
Synergy E5, E5s and Logo 800 xxtreme
vControl and Neo

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04-06-2011 02:37 PM  6 years agoPost 3
Bert Kammerer

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Orlando, Florida

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Hello,

You should be able to get 2250, even in set RPM mode, it will show about 105% or somewhere around there, which is fine if you figured out the voltage at 3.85 to 3.9 per cell. If you're not getting that, then there must be something incorrectly entered in the options. I was on the phone with Clint from Castle Creations this morning and we were actually discussing that same thing.

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04-06-2011 03:07 PM  6 years agoPost 4
bob00

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Toronto, ON

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Hi ITMamuel,

Just had a look at one of my HK4035-560 motors - it's a 10 pole motor, not 8.

If this value is incorrectly set the gov won't work properly - could be your problem.

Best,

- Rob

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04-06-2011 05:31 PM  6 years agoPost 5
ITManuel

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Brixen, ITALY

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Hi Bert,

yes it was actually me how has done this request on Clint from CC and he told me he is trying to reach you for that! :-)
Now i already ordered the new HK III 4035-560 with a 14 tooth pinion, just to be on the save side!
Are you not running the set RPM mode on the ESC?

@bob00

I did the setup separately for the Xera 4030 8pole and HK 4035 10pole motor, so that was not the problem. Anyway its not changing the result if you choose 8pole or 10 pole motor!

Thank you guys

Kind regards

Logo 600 - Vbar 5.0

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04-06-2011 05:50 PM  6 years agoPost 6
Bert Kammerer

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Orlando, Florida

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Hi Manuel,

Are you calculating this with the mod 1 gear at 106 tooth, correct? If so, it should work with 560 Kv motor and 12 tooth pinion at 2250, you have practically no headroom left, but it does work.

Careful with 14 tooth pinion, too much for this setup, you'll overamp the ESC and kill your packs prematurely.

Bert

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04-06-2011 06:00 PM  6 years agoPost 7
ITManuel

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Brixen, ITALY

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Yes correct, the mod 1, 106 tooth main gear.

.....Why is the software than bringing me to the 14 tooth pinion??? Even if i'm doing the calculation with the head speed calculator on the readyheli.com, its telling me the same thing:

12 tooth pinion: Maximum RPM before Castle Link program goes red
(indicating too high headspeed to be governored): 2006

13 tooth pinion: Maximum RPM before Castle Link program goes red
(indicating too high headspeed to be governored): 2173

14 tooth pinion: Maximum RPM before Castle Link program goes red
(indicating too high headspeed to be governored): 2340

With the 14 tooth pinion the castle link Software it shows me nothing wrong!

Is the 12 tooth pinion than the best choise on your eyes or would the 13 tooth be better?

Logo 600 - Vbar 5.0

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04-06-2011 06:05 PM  6 years agoPost 8
Bert Kammerer

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Orlando, Florida

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You must be entering something wrong somewhere?

10s = 39 volts loaded (roughly)

Motor kv 560 x 39 = 21,840 (motor RPM)

106 main / 12 pinion = 8.8333 (gear ratio)

21,560 (motor RPM) / 8.8333 (gear ratio) = 2,472

According to this basic calculation, you should have 2472 at 100% throttle, this is of course without removing loss of efficiency, but in any case, once you remove efficiency, you'll be pretty close, even if you're not at 2250, the setup still works well, you have practically no head room at all, so collective management is a must. This is not suitable for all flying styles, if you don't have great collective management, then you'll need to either drop the head speed down to about 2100 to 2150 or go with a larger pinion. Be careful putting anything bigger than a 13 tooth though with a 560 kv motor on that setup.

Bert

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04-06-2011 07:54 PM  6 years agoPost 9
MrMel

rrProfessor

Gotland

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Bert is right, 14T is WAY too much.

Castle calculates A LOT of headroom in their calculation.
Meaning putting stress on Controller and Packs.

For sample, 560 motor/12T with a Kontronik I would run 80% for 2250 HS

So will the castle run if you enter 2250 with 12T, yes, but not with best performance.

If you absolute need top performance, go 13T but not higher.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

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04-06-2011 08:32 PM  6 years agoPost 10
Bert Kammerer

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Orlando, Florida

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Thank you Mr. Mel, 13T works for high performance like he says, but will be hard on stuff!

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04-06-2011 08:40 PM  6 years agoPost 11
ITManuel

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Brixen, ITALY

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So for which minimum and maximum rpm can i go whith the 13 tooth pinion? If you guys say that 13 tooth are giving the best performance i'm gonna put it in! :-) ....cant' wait to get the motor! :-)

Logo 600 - Vbar 5.0

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04-06-2011 09:00 PM  6 years agoPost 12
MrMel

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Gotland

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Let's just forget about the governor for a while,

At spoolup, at 100% throttle you would see 2750 RPM, give or take (pack at 40v).

With 13T, 560kv motor, and a 10s pack in a Logo 600 your voltage will drop to 3.3v per cell during max load.

That means the RPM, with motor losses etc, will drop to min around 2085 RPM,

That's you theoretical Max/Min with a 13T.

Of course, running at 100% the RPM will drop like a stone when you apply load, that's why you run governor mode and have headroom to "cover" for that drop.

With 13T you can run 2250-2300 with top notch performance, Flight times will suffer of course compared to 12T, because just like paddling a bike uphill, higher gear allows faster response, but its harder.

Then again, more fun since the response/performance will be better.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

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04-16-2011 04:42 AM  6 years agoPost 13
misskimo

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Alaska 17 years,​before mississippi​for 31y

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hey, Im coming out with a max 100% wide open HS of 2500 with TP packs with 8.8333 with a fresh pack, so Yeh! 2200 in gov mod should do good

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