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Gyro Hobbies . E-flite . Next D

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HIROBO Freya - Sceadu - Shuttle > Carb smart on EVO 50..have you done it?
 
 
400driver
Senior Heliman
Location: uk/ Spain

I would like to know how and where you installed the servo on the frame. Also which type of resin did you use to attach the sensor. I have seen arctic silver recommended but cant get hold of any!
Is RTV silicone the same as silicone gasket sealer as i have some of this.
Thanks mark
ps what servos are you running with this setup?

More days at home would be nice!
05-10-2008 09:30 PM
 
 
Leif
Elite Veteran
Location: Oxford, PA - USA

I used "Ultra Copper" RTV to hold the sensor in place.



I'm using a S3107 micro-servo, which I've attached over the fan shroud area using double-sided tape. Since the surface is lower than the edge in this area, I built it up by sandwitching a piece of plastic between layers of double-sided tape and then taped the servo to that.



I've mounted the control unit on the servo frame up against the unused top servo mounting location.



So far, I'm very happy with the CarbSmart. The true benefits should show in the heat of summer, but so far it's worked wonders.

Leif
05-11-2008 01:07 AM
 
 
400driver
Senior Heliman
Location: uk/ Spain

Leif,
Thanks for taking the time to answer and the photos are great.I will copy your installation on my Evo.
Much appreciated.
Cheers Mark

More days at home would be nice!
05-11-2008 08:33 AM
 
 
kcass518
Veteran
Location: Manhasset, NY - USA

Leif,

It looks like your 'full lean' position is at about 3/4 turn out, which means to me that 'full rich' would be about 1 turn out. Is that correct? I've recently installed the CarbSmart on my Evo 50, and it worked fine the first day, the second day - nothing. I think my settings may have to be tweaked, but I hesitate going as lean as you are. I know that the CarbSmart will richen the needle if need be, but what happens if it needs to go to 1 1/4 turns out, which is where many are running their 50 Hypers?
05-13-2008 09:39 PM
 
 
Leif
Elite Veteran
Location: Oxford, PA - USA

My "midpoint" is a bit less than 1.25 turns out from closed. If I recall correctly, I set the midpoint to about 1-1/8 turns out.

That makes the full lean point about 7/8 turns out and my full rich position over 1-3/8. Actually, I get more than 90 degrees of throw on the servo, so the full range is a bit more.

Keep in mind that I'm running a Uniflow pressure system for the fuel feed. This needs a different absolute needle position than a stock setup (generally, uniflow needs to be a bit richer).

I may need to adjust the midpoint again when the hot summer days arrive. I'm running the 110 temp setting at this point.

Leif
05-13-2008 11:11 PM
 
 
kcass518
Veteran
Location: Manhasset, NY - USA

I rechecked my needle last night and I made a mistake thinking you were at 3/4. But, I don't think you could go from 7/8 to 1 3/8. That would be 1/2 a turn. I figure on having about 1/4 turn of needle total, or maybe a touch more, so I'm figuring on trying a little more than 7/8 to a little less than 1 1/4. Anyway, where do you have your Gain set? Have you played with it at all?
05-14-2008 06:29 PM
 
 
Leif
Elite Veteran
Location: Oxford, PA - USA

You're right. I wasn't thinking too hard last night. The midpoint is 1-1/8. The full lean is a bit under 1 turn and the full rich is a bit over 1-1/4.

I've got the gain set to the centered position as recommended in the documentation.

Leif
05-14-2008 07:47 PM
 
 
aceman
New Heliman
Location: Norway

I've mounted mine like this with a HS50 servo. Don't look at the cable mess, it's an old picture

05-14-2008 09:54 PM
 
 
kcass518
Veteran
Location: Manhasset, NY - USA

Wouldn't it be nice to be able to see the control center without removing the canopy?

05-14-2008 10:05 PM
 
 
aceman
New Heliman
Location: Norway

I can see it thru the canopy but it's hard to push the button...
05-14-2008 10:10 PM
 
 
400driver
Senior Heliman
Location: uk/ Spain

nice place to mount the servo iceman.

More days at home would be nice!
05-15-2008 10:04 PM
 
 
Xircom
Veteran
Location: Kuala Lumpur - Malaysia

Still full-size servo ...



*** fly more ***
05-24-2008 03:39 AM
 
 
400driver
Senior Heliman
Location: uk/ Spain

sorted! Im going to mount it next week. Thanks for all the advice.

More days at home would be nice!
05-24-2008 08:24 AM
 
 
H500e_ca
Heliman
Location: Great Falls, VA

Mount to a EVO 50

Here is my installation of the CarbSmart, easy to access the settings...



Turbine Power = Happiness
05-24-2008 09:11 PM
 
 
Turkana
Senior Heliman
Location: Montreal,Quebec , Canada

Hi

If anyone is intrested. I am running mine on 130 deg.gain at 65 % Runs well so far I am very happy with it. After a couple of flights I found out that my hyper runs best at 130 Degrees . I am flying a fun tech pipe on my evo. Regards Pete
05-25-2008 12:05 AM
 
 
Xircom
Veteran
Location: Kuala Lumpur - Malaysia

what is the difference between the end-points setting and the gain ? thought the end-points set the travel limits, whereas the gain tells "how sensitive" (how quick ?) the carbsmart moves to the right needle. dont know why a low gain would be beneficial in this case ?

*** fly more ***
05-31-2008 09:02 AM
 
 
Leif
Elite Veteran
Location: Oxford, PA - USA

The endpoints are used to adjust the physical limits of travel. They can be used to prevent binding dependng on your installation.

The gain is used to determine how closely the CarbSmart tries to match the temperature, i.e. how many degrees from setpoint until the CarbSmart adjusts the mixture.

Too high of a gain and you may end up "hunting" the mixture by overcorrecting and overshooting the target setpoint on each correction.

Too low of a gain and the device will only correct for the general average temperature of the engine, but will not correct for temperature spikes due to engine loading during maneuvers.

Somewhere around center is a good starting point. For general flying this should be fine. If you're doing maneuvers with a wide variation in engine loading then you might want to increase the gain to compensate.

Leif
05-31-2008 02:18 PM
 
 
kcass518
Veteran
Location: Manhasset, NY - USA

Leif has it right. The instructions are a little weak in explaining that finer point. I'm still running mine at 110 degrees and getting plenty of smoke. I might bump it up to see what happens when I have time to play with it. So far I'm very happy.
05-31-2008 03:42 PM
 
 
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HIROBO Freya - Sceadu - Shuttle > Carb smart on EVO 50..have you done it?
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