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Autography FlightPower . Advantage Hobby . Revolution Models

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Align T-REX 600N 700N > More EagleTree Data for CarbSmart
 
 
tchavei
rrProfessor
Location: Portugal

What u want is that the needle travels to center when the engine is subjected to heavy punishment.

You won't be able to setup anything by "hovering" around. Mine is always fully lean and the engine never goes past 85C when I hover. Beat the hell out of it and then check the needle. Oh and don't auto it down. The incoming wind will cool the engine and give the CS time enough to return to its lean position.

THe best is to trash it hard and then land imediately with full power. hit TH and run to the bird so you can see the needle position. A little red dot on the needle arm will help you see its position

Tony


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"Perfection and patience usually walk side by side..."
04-12-2008 04:36 PM
HOMEPAGE  
 
 
LJS
Veteran
Location: Minnesota, USA

Hi Tony,

Your advice is not practical for the majority of us. If someone is doing wild 3D then they should set it up as you suggest.

But for mild 3D (for me this includes backwards and forward loops, full pitch inverted climbouts, tictocs not to excess, funnels, and other maneuvers that do not load the engine that much) setting it at hover is sufficient as proved by my EagleTree data.

Keep 'em flying.
LJS

600E, 1910 1Y, 8S FP4270, GY611
600N, OS50 Hyper, GY611
Logo 5003D, 600+, 6S TP 5000, DS760
04-12-2008 05:02 PM
 
 
tchavei
rrProfessor
Location: Portugal

I said:

Quote 
Beat the hell out of it

This doesn't mean hard precise 3D. I'm sure that all of us have done a maneuver in a (bad) way as we hear the engine loading up right? Well what I'm suggesting is that you do exactly that maneuver in that bad way and hear the engine crying for help. I doesn't matter if it is badly controlled tic tocs, pitch pumping like an idiot up and down or a chaos 2 inch above the ground. What matters is that the engine loads up (read as heats up) to see what the carbsmart is doing.

You know what I do when I want to test my needle settings? I do 3 nose down skid out funels. You know why? Because I suck so badly at it that I can hear the engine missing every second beat and the headspeed falling so much I can count the blades. If the engine doesn't heat up during that torture I don't know what else will

Tony


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"Perfection and patience usually walk side by side..."
04-12-2008 05:09 PM
HOMEPAGE  
 
 
joeycoates
Senior Heliman
Location: Dallas, Texas

Oh I understand what you are saying Tony! I will do some NASTY tic-tocs, I am talking about checking the logs and dropping down to 13,513 which is 1589 RPM's headspeed. THAT will get the temps to climb and that is when I am looking to see how the CS is responding.

But what is really cool with the CS is that even bogging it down to that point the temps top out at 233-240 and then only for a second, and the engine just keeps on pulling. Is it happy? No, but it keeps chugging along. Of course I try not to get to that point when just flying and doing my thing, but it is nice to know that the engine will put up with that kind of abuse and live to fight another day.
04-13-2008 12:51 AM
 
 
pani
Senior Heliman
Location: Athens, Hellas

Ok , update.

First of all thanks Tony for the advise, although I really cannot fly a funnel yet (well, a perfect precise height funnel at least). I did not auto down though, and I did push it as much as I could.

As I said I will, I tried needle settings tighter towards lean on Sunday's flights and indeed I was way rich to start off. Now full lean on the CS is 1 turn exactly and full rich close to 1-1/2. Much better, can see the CS working in the air with a lot of smoke trail when the engine's pushed and close to no smoke when off load.
Also motor temps increased towards the 100o C mark (CS preselected temp.) Back plate temp is warm not stone cold as before.

I am Happy!!!

Ah, bumped up the IU1 and IU2 rpm's to 2100 as well.
Sweeeet!

Ignorance is bliss
04-14-2008 01:14 PM
 
 
LJS
Veteran
Location: Minnesota, USA

Hi All,

Here's my latest data. The rich runs were due to me accidentally setting the needle 2 turns out instead of 1 turn out after I had my engine out to put in the metal fan. As you can see, the temperature was very low at that rich setting.

The other problem with the rich setting was fuel consumption. With CarbSmart I set my timer for seven minutes so I can start wrapping things up. But with the rich setting I ran out of fuel at 6.5 minutes doing an inverted pass. I'm not so good at autos, but was able to roll her over and auto her down on the field.

I set the needle so that it is a couple clicks under one turn in the full lean position, but I still had no part of the graph out of the desired CarbSmart range. The engine was very strong throughout the entirety of all three flights once I got the needle straightened out.

Keep 'em flying.
LJS



600E, 1910 1Y, 8S FP4270, GY611
600N, OS50 Hyper, GY611
Logo 5003D, 600+, 6S TP 5000, DS760
04-15-2008 03:31 AM
 
 
tchavei
rrProfessor
Location: Portugal

pani: Great

LJS: the two last flights are exactly how the graphs should look like. Good


One last tip. For those using the eagletree logger, if by the end of the flight the peak temp is spot on or slightly above the target temp, you're one click too rich. generally you want the peak temp to be like 5C-8C above target temp to achieve that wave form like LJS is showing on his last flights. Of course this may vary from heli to heli because of the eagltree sensor installation (loop sensors have much greater deviation) but generally its a good idea to follow.

Tony


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"Perfection and patience usually walk side by side..."
04-15-2008 04:54 AM
HOMEPAGE  
 
 
4 pages [ <<    <     2      3     ( 4 )    >    >> ]2482 viewsPOST REPLY
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Align T-REX 600N 700N > More EagleTree Data for CarbSmart
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