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Goblin 570 › Goblin 570 6s head speed help
01-09-2015 05:30 PM  3 years agoPost 21
TheNak

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Portland, OR USA

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I don't understand how you intend to pass the ESC's signal and ground wires to the AR7200 but NOT the power from its BEC without temporarily removing the power connector from the ESC servo plug.

I just use an Xacto to gently lift the locking tab and pull out the power connector from the plug. When you're done with the endpoint calibration, you just plug it back in.

The only other thing I can think of is for you to get a servo extension cable and cut just the power wire. That way you plug the ESC into one end and the other end into the AR7200 and it won't use the ESC's BEC to power the AR7200.

But honestly, you need to become mechanically comfortable with these sorts of things if you're going to get into RC.

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01-09-2015 07:46 PM  3 years agoPost 22
GBaker110583

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Chandler AZ

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I just thought of getting a servo extension wire after posting that... I understand that I do need to become more mechanically comfortable and that flying isn't the only skill needed.. I'm going to get a servo extension and cut the red lead which from this video is the middle wire.

My last question is do I unplug the bec from the beastx while doing the calibration? I have a 2s lipo I can use and my servos are rated for 7.4v.

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01-09-2015 09:11 PM  3 years agoPost 23
TheNak

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Portland, OR USA

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Yes, you want to disconnect the BEC's cable to the AR7200 and use only your 2S battery to power up the AR7200 first.

Also, you want to get the AR7200 "Manual Addendum" that explains their "SmartSafe" feature on that receiver. What it basically says is that the AR7200 will emit servo pulses corresponding to the failsafe position you've set on the throttle channel to the ESC until the throttle stick is set to low throttle. After that, throttle stick movement is reflected in the servo pulses sent to the ESC.

What this means to you is that you need to turn on your TX, power up your AR7200 via your 2S battery and allow it to connect to the TX, then make sure the throttle stick is in the low position. After that, setup your TX according to the endpoint setting instructions.

Good luck! We'll get you going sooner or later!

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01-14-2015 05:09 AM  3 years agoPost 24
GBaker110583

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Chandler AZ

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Ok so I got the end points set up and I rebounded the heli to my dx9. I set up my head speeds as follows 1900 2100 and 2125. 2125 was the highest I could go without an over head warning. Now that I have this all set up do I need to re bind the heli again?

I depending how how this set up works I might go with a different pulley... But I don't need 2400 hs... I'm just not that good yet.

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01-14-2015 06:07 AM  3 years agoPost 25
TheNak

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Portland, OR USA

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There wasn't any need to rebind for this step. You were already bound otherwise you wouldn't be able to set the endpoints...

When I run the numbers in the CC software for the Quantum motor, I get 94.8% and no warning as you indicate for 2150 rpm.

2200 rpm gives 98.2% and 2300 rpm gives 102.7%. You should be able to go with either of these but the governor doesn't have much headroom.

You really need to get a 22 or 23 tooth pulley but for now you can use 2200 or even 2300 rpm.

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01-14-2015 01:38 PM  3 years agoPost 26
GBaker110583

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Chandler AZ

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Makes sense. I am going to fly it soon and see how I like it. I may not really need the extra head speed for my current level.

Thank you all for your help!!!

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01-14-2015 05:29 PM  3 years agoPost 27
Rich Knapp

rrApprentice

Appleton, Wisconsin

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I'm running a 570 6S and had the same issue. Never had it with my 550X with the warnings.

CC tec suport states you can go to 107% with no issues. The warning is a base line general "tap on shoulder".

CC also says you can change your settings for Lipo like I did.

I went 1S 24V and get my first warning in the 2500 range.

This is same as 6S and 4V per cell (my true average V during flight). Once you save and read. The ESC converts it to 1S 24V. Just pick other and change the defaults to 6S and your average V in flight. Then save. When you go back and read the unit it will be comverted to same thing but in the units way of looking at what you picked.

CC ESC's programming has a huge buffer zone compared to others.

I know some people will go to 1S 25V. Just watch your logs and play with it until you are happy with the ESC's temps.

Team Manager, Lynx and OXY HELI.

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01-15-2015 12:50 AM  3 years agoPost 28
GBaker110583

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Chandler AZ

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Hey there Rich. I watched your videos on your Demon Red goblin and you've motivated me.. I've just ordered everything in red except for the swash plate dfc and landing skids. I personally like the hps set up... I'll probably do the zeal blades later..

Finally got one flight in today because work has been crazy... I ran 1900 2000 and 2135. I'm going to play with the gearing ratios here and see what pulley I want to change out.. I think my goal is to get 2000 2100 and 2250 or 2300 head speed depending on how it flys. I know the cc has a huge buffer zone I just don't want to push the esc.. I'm running the 120.

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01-15-2015 01:03 AM  3 years agoPost 29
Rich Knapp

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Appleton, Wisconsin

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^5

Team Manager, Lynx and OXY HELI.

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01-15-2015 01:43 AM  3 years agoPost 30
GBaker110583

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Chandler AZ

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So I adjusted my head speeds to 1900 2100 and 2206. I also played around with the gearing ratios and it looks like I need the 23t pulley to get what I really want without much overhead as you all have stated.

My question is that I'm using the quantum 4125 1100kv motor with the castle phoenix edge hv 120 as my esc. Will I be safe changing the gear ratio like that with this esc? The manual doesn't list my esc it lists the 130.

Sorry again this is my first goblin and I'd rather be safe than sorry... I just can't afford kontronik lol

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01-15-2015 04:20 AM  3 years agoPost 31
Rich Knapp

rrApprentice

Appleton, Wisconsin

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Gear ratio is gear ratio.

Putting them into the ESC just tells the ESC is using for it's calculations.

You will have to change the ratio in the ESC settings to match what you set up for.

Team Manager, Lynx and OXY HELI.

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01-15-2015 04:24 AM  3 years agoPost 32
Rich Knapp

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Appleton, Wisconsin

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You need to mechanically change the gear ration by installing a correct pinion. Just changing ratio in ESC only with no mechanical change to correct matching motor pulley will only give you false readings and screw everything up.

That's if you are talking about only changing ratio in ESC and NOT mechanically.

Team Manager, Lynx and OXY HELI.

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01-15-2015 05:13 AM  3 years agoPost 33
GBaker110583

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Chandler AZ

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No that's not what I'm asking. I'm asking of my motor esc and bec set up will be ok with running the 23t pulley.

Motor quantum 4125 1100kv
Esc castle edge 120 hv
Bec gryphon gsr 5045

I'm not as well versed in electronics as some of you are on here and I don't want to put too much stress on the esc or motor. If need be I'll just leave it alone until I can afford to upgrade the esc before changing the pulley.

Thanks again for your help.

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01-15-2015 06:12 AM  3 years agoPost 34
Rich Knapp

rrApprentice

Appleton, Wisconsin

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Stock blades (570) you should be ok. I'm not a electronics guy though. I'm sure one will chime in.

Team Manager, Lynx and OXY HELI.

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01-15-2015 08:16 PM  3 years agoPost 35
v58 fuy

rrVeteran

UK - Kent

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The problem with esc's that require a very large amount of headroom, is that people end up changing their gear ratio in search of the desired head speed they want by increasing the pinion size - which in turn just makes the issue worse, because it will be harder to hold the head speed due to the increase in gear ratio, kind of double edge sword.

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01-16-2015 06:46 AM  3 years agoPost 36
GBaker110583

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Chandler AZ

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How does changing the pulley make it harder on the esc to maintain the desired headspeed?

I messaged Chris Reibert and he said that the 23t pulley wouldn't negatively affect my esc it just makes the desired head speed possible... my target is 2250 at the hugest which with the 23t pulley makes thay obtainable with enough over head per the cc software.

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01-16-2015 03:53 PM  3 years agoPost 37
TheNak

rrNovice

Portland, OR USA

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A larger pulley makes for a numerically lower gear ratio, thus it requires more torque from the motor to maintain RPM or to try to increase RPM if disc loading has dropped the RPM below the setpoint.

It's just like trying to drive your car in a high gear. Imagine trying to maintain a constant speed (like the governor is trying to do) in your car when it's in top gear and you're going up and down hills. As you go up a hill, the car slows down so you have to increase throttle in order to maintain speed. If you were driving in a lower gear, this would be easier but if you're in too low a gear, you will hit redline before you can get to the desired speed you're trying to maintain.

That's why this is a balance between motor power, gear ratio, governor headroom, desired headspeed, flying style, etc.

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01-16-2015 06:40 PM  3 years agoPost 38
GBaker110583

rrNovice

Chandler AZ

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Ok so is it unrealistic to use the 23t pulley with my current set up? If so I will wait until I can upgrade the motor or esc.....

Again motor quantom 4125 1100kv
Esc castle edge 120 hv
Bec gryphon gsr 5045

My goal is to be able to hit 2250 as my high head speed without any minimal overhead warning. I understand that the castle software's overhead warnings aren't that big of a deal per say.... just me being picky I guess.

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01-16-2015 07:28 PM  3 years agoPost 39
TheNak

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Portland, OR USA

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23T is what I'm using with the same motor and 2400 RPM IU2.

Stop worrying about the warnings!

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01-26-2015 09:23 PM  3 years agoPost 40
mxracer33x

rrNovice

Chico, CA

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Same as above. I run 2400 on a CC120 at first then tried a YEP150LV. Been working great, both on a 23t. If I was looking at running 1900 up to 2300 I would use the 22t.

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