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Home✈️Aircraft🚁Helicoptere-SABGoblin 500 › New to the Goblin~talon 90/now a question of headspeed
03-28-2015 10:26 PM  4 years ago
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heliraptor10

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kokomo, in-US

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New to the Goblin~talon 90/now a question of headspeed
I just got my first Goblin 500. Got it used from right here on Runryder. I'm not new to helicopters, to be certain if you check you'll see I cut my teeth right here (Don't judge too harshly, I've come a long way ).

Now to the point, I'm seeing that the talon 90 is involved in some fires. But I'm also seeing people run them just fine. I'm going to be flying light 3d at best. Flips and backwards flight are about as advanced as I get. I'll be running my servos at 6v. If I run a conservative head speed will I be fine with this esc for now?

I do plan on upgrading as my skills raise. But that's probably late this year or next season.

Thanks for any help.
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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04-03-2015 06:02 AM  4 years ago
egiraldo911

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McKinney, TX - USA

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Talon 90
From all that I have read about the Talon 90, the main issue is with the internal BEC. First off, is not rated for what the say it is. What Castle rates it at is the peak amperage and not the constant. Don't remember right now what the rating is. Second, there is only one lead delivering that power to the system. The leads are only rated at 5 amps at best each I believe, with only one on the Talon 90, that could be a weak link.
I am also using a Talon 90 on my Goblin 500, but I decided to remove the red wire from the ESC lead and I am using a CC BEC Pro which is rated for 20 Amp peak and it has 2 leads. I hope this info helps. I know a lot of people using the internal BEC just fine, but I rather have some peace of mind. Anything else not related to the BEC, it is just bad luck. Even the best ESC out there are catching fire. It all could be a bad setting on the motor or not properly cooling the ESC with a heatsink.

Ed
Is not the size of your heli that matters, is how you fly it!
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04-03-2015 12:24 PM  4 years ago
heliraptor10

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Thanks !
I'm waiting on the carbon fiber servo mounts...should be here tomorrow.
I have an external BEC, but I didn't want to use it because it was on my raptor which went down because of sudden loss of control.
However, it was supposed to be a pass through BEC so I had the ESC plugged into it and it to the rx. Which I am reading now that is a bad idea.
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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04-03-2015 12:47 PM  4 years ago
heliraptor10

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Well you learn something everyday. I just dug out that (old dimension engineering )BEC...I bought it for my raptor because it was rated for 6 servos. But I looked it up just now and it is rated at 3.5 amps. At that time in my learning curve I didn't know much about amps. That's likely why I had a brown out.Goblin! where have you been all my life?
RC helis, the original fidget spinners
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04-03-2015 01:14 PM  4 years ago
G.Stone

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Thompson, Pa. USA

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I use Talon 90 on My E550 and 2 500's. No problems ever. I do put the CC cap pack in line though. IMO, very solid setup.
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04-03-2015 01:17 PM  4 years ago
heliraptor10

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Cap ~ capacitor ?Goblin! where have you been all my life?
RC helis, the original fidget spinners
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04-03-2015 01:44 PM  4 years ago
Pistol Pete

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Seffner, FL

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Just fly it. It works.
Stop worrying about...not much.
IF there were any issues with it you would DEFINITELY be reading all the bad about it all over the forums and this thread would have gone viral by now supporting such.

Egiraldo...you replaced an internal BEC with an external same brand and specs...per se. Sure it has two leads but whatever failures you may be referring to, Im sure they are not connector related.
~~Enjoying the hobby one flight at a time~~
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04-03-2015 01:56 PM  4 years ago
FlyinRC

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Massachusetts

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no problems with mine on the G500.
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04-03-2015 02:03 PM  4 years ago
heliraptor10

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I bought the castle link...went through it.
Everything's set up right, by the numbers.
Except I do need to verify which pulley my bird has to make sure the gear ratio is correct.
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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04-03-2015 03:04 PM  4 years ago
egiraldo911

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McKinney, TX - USA

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I definitely don't have anything against Castle products. I have used Castle only products on over 10 helis now without any issues. Well, I had a Trex 700 loose power and crash once, but still not sure if it was the ESC. Anyway, they're great products in my opinion and the Talon 90 has worked fine for me. However, when you read many complaints about the internal BEC, I rather have peace of mind and use an external BEC.Is not the size of your heli that matters, is how you fly it!
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04-03-2015 03:53 PM  4 years ago
heliraptor10

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What about one of these ? It's only 5 bucks, you think it actually helps ?
I see the inline ones mentioned early, but that seems aimed at protecting against voltage drop from the battery itself, Im concerned about voltage drop to the RX (or ikon in this case ).
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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04-06-2015 01:11 AM  4 years ago
heliraptor10

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Flew it today...2400 headspeed, talon didn't even break a sweat.Goblin! where have you been all my life?
RC helis, the original fidget spinners
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04-07-2015 01:09 PM  4 years ago
dkshema

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Cedar Rapids, IA

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Forget the external cap as you posted. It is unnecessary. It is effective in relieving you of $5, but not much else.

The CC capacitor pack goes on the INPUT side of the ESC. It is used should you want to extend the input leads of the ESC. Longer input leads add inductance. If you don't do something about that, you can introduce an excessive amount of ripple on the ESC input, leading to ESC failure. The extra input capacitance filters out the ripple, preventing ESC failure.

-----

The Talon 90 regulator is spec'ed for 20 amps of peak current and 9 amps of continuous current.
-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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04-07-2015 01:35 PM  4 years ago
heliraptor10

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Yeah...I'm just paranoid. The goblin is out of my league really. But I got her well used, and at a Damn good price. She's the most beautiful beast I've owned. I'm flying her like she's porcelain.Goblin! where have you been all my life?
RC helis, the original fidget spinners
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04-10-2015 03:48 PM  4 years ago
gcm2

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Ft Worth, TX

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no problems with mine on the G500.
Same here. Probably 50+ flight now, no issues whatsoever with the 90. I also have this ESC in 3 other helis, NO problems. No caps in-line or anything like that. I have no idea where the Talon 90 bad rap came from - maybe older units. I do mild and some aggressive 3D stuff/big air. Your mileage may vary.
TREX 700e, Goblins 500 & 570, DT520e, Gaui X3, Synergy E5
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04-19-2015 08:21 PM  4 years ago
heliraptor10

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What motor pulley do you run?
Not sure what mine is (used arf)
But by the calculations programmed in the ESC by the previous owner my Max headspeed is 2450.
This Is toward the low end right ?
I'm going to measure my headspeed using my high speed camera on my next flight.
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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04-23-2015 08:39 PM  4 years ago
heliraptor10

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Ok...pulled out my motor pulley and it's 17 tooth. Found Mr Mel's headspeed calculator..
Ungoverned I get headspeed that start out around 2900 and drop to 2700 by the end of the pack ( estimated). But when I click governed and tell it I'm running castle it tells me my max headspeed is 2450 or so.

Once again, this is doing fine for me for now. But to get up to the recommended 2700 I'll need the 18 tooth pulley?
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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05-22-2015 05:46 PM  4 years ago
heliraptor10

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kokomo, in-US

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I've got 32 flights in on her! I freaking love this thing.
Still wondering about the headspeed...
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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05-26-2015 12:49 PM  4 years ago
G.Stone

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Thompson, Pa. USA

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I would stay around 2400. Just my opinion. 2900? I'd be scared.
At 32 flights and you're happy, I think that equals success!

Here's the CC CapPak. I only did this because A.It's cheap B. No data logging, better safe than sorry.
It is kinda bulky and one more thing to stuff in.
http://www.castlecreations.com/prod...c-cap-pack.html
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