freedom 20

[jppp]

http://www.hobbyoutlets.com/store/hobby/57-goldberg-freedom-20-trainer-kit-15-25555.html


παιδια εχω αυτο το θερμικο αγορασμενο ακριβως πριν 15 χρονια απο hobbybox
εχει πεταξει απο αλλον κυριο μια φορα τοτε ημουν μικρο για να το πεταξω
εχω καθαρισει τον κινητηρα ειναι k&b 28
μετα απο 15 χρονια υπαρχει περιπτωση να κοπει στον αερα?
η κατευθηνση ειναι hitec am τι λετε να την χρησιμοποιησω?

[Mogolos]

http://www.hobbyoutlets.com/store/hobby/57-goldberg-freedom-20-trainer-kit-15-25555.html


παιδια εχω αυτο το θερμικο αγορασμενο ακριβως πριν 15 χρονια απο hobbybox
εχει πεταξει απο αλλον κυριο μια φορα τοτε ημουν μικρο για να το πεταξω
εχω καθαρισει τον κινητηρα ειναι k&b 28
μετα απο 15 χρονια υπαρχει περιπτωση να κοπει στον αερα?
η κατευθηνση ειναι hitec am τι λετε να την χρησιμοποιησω?

Κάνε τα απαταιτητα τσεκ, και αν ολα ειναι καλά, γιατί να μην πεταξει?

[jppp]

μονο τα φτερα φοβαμαι απο τον πολυ καιρο εναλλασομενη υγρασια και ζεστη διοτι ολα τα χρονια το ειχα σε δωματιο σε ταρατσα :D

[bladeskiller]

Τα φτερά μπορεί και να έχουν πετσικάρει λίγο αλλά να κοπεί στον αέρα δεν το πιστεύω. Εδώ έχουν πετάξει στο μοντελοδρόμιο κάτι αεροπλάνα που τα έχει ο Τσιούγκος στο "ράφι" καμιά εικοσαριά χρόνια τουλάχιστον. Απλά κάνε έναν προσεκτικό έλεγχο.



Φιλικά Κώστας.

[Mogolos]

Deς αν εχουν ξεκολλησει πουθενα. Πιεσε τα λιγο να δεις.
Λογικά δεν θα εχουν προβλημα.

[jppp]

παω να το βαλω εμπρος και σπαει η βαση ahahahahaha ηταν η βαση του κιτ ξερετε μπαλσινη, εβαλα μια ακλονητη της thunder tiger ολα οκ θα ρυθμισω τον κινηταρα και ευχομαι ολα να πανε καλα
εχω παρει ενα 5 λιτρο η 10 λιτρο δεν θυμαμαι ειναι μεγαλο ντεποζιτο tornado 15%νιτρο ολα φαινοντα καλα
αυτο που μου την σπαει ειναι το σιδερωμα γρρρ και εχω ατμοσιδερο :p

οι am κατευθυνσεις ειναι επιφοβες?
τα servo παντως και ολα λειτουργουν τελεια

[jppp]

με ταλαιπωρει ο κινητηρας

http://www.rcuniverse.com/market/item.cfm?itemid=604851


την μεγαλη βελονα πιστευω οτι θα την καταφερω η μικρη θα ρυθμιστει οταν ρυθμιστει η μεγαλη?

στην foto υπαρχει μια μικρουλα μαυρη κουκιδα (βιδουλα) στην μεγαλη βελονα μπορει καποιος να μου πει τι κανει?

η μικρη βελονα ειναι αυτη με το ελατηριακι σωστα?

διαβασα σχετικα το manual ths κ&β
θα θελα να ρωτησω κιολας στο ρελαντι πρεπει να κλεισει σχεδον τελειως η απλα κλεινει μεχρι ενος σημειου? δεν μπορω ακριβως να σας δωσω να καταλαβατε τι εννοω χωρις να πειραξεις το trim

[Αντώνης Κριτζάς]

Αν μιλάς για το αλλεν στον ρυθμιστή ……………
Ξεβιδώνεις το αλλεν βάζεις στην τρύπα από πάνω ένα ατσαλάκι και σφίγγεις πάλι
Βασικά βρίσκεται εκεί για να μπορείς να ρυθμίσεις όταν ο κινητήρας είναι κρυμμένος και δεν έχεις πρόσβαση στη μεγάλη
βάλε φωτογραφία και από τη άλλη πλευρά(που συνήθως βρίσκεται η μικρή) γιατί το πάνω βιδάκι δεν μοιάζει με την μικρή................ίσως κάποιος άλλος να ξέρει περισσότερα

[jppp]

http://www.rcgroups.com/forums/attachment.php?attachmentid=2644900


η μικρη ειναι με το ελατηριακη διοτι οταν την εσφιξα τελειως οταν εκλεινα γκαζι ηταν ορθανοιχτη

αλλα οτι και ρυθμιση να χει η μικρη πρωτα ρυθμιζεις την μεγαλη σωστα?
οταν παω να κλεισω γκαζι σβηνει δεν μιλαμε να να ειναι κλειστο τελειως 2 κλικ 3 το πολυ απο το full

[Αντώνης Κριτζάς]

Η πάνω βιδα είναι σαν οδηγός για το βαρελάκι του carburator οπότε αν την τερματίσεις δεν κινείται

[CARAPIS]

Γεια σου κι απο εμενα jppp

Γιααα ριξε μια ματια στα παρακατω, νομιζω κατι θα βρεις...




How to hook up the Kavan Carburetor
The large type KAVAN carburetor uses a pressure release to stabilize the fuel tank pressure when you transition from high speed to idle.
At high speed the fuel tank pressure builds up and then when the engine is throttled back to an idle, the input pressure from the exhaust is reduced. During this period while the pressure is stabilizing, the idle mixture tends to be rich and leans out slightly as the pressure reduces.
Configure the fuel tank with 3 lines. Two vent and one pick up. Connect the fuel inlet to the klunk line (pick up line) in the tank and the pressure release line to one of the vent lines.
Hook the other vent line to your muffler pressure.
A good starting point for the main needle is about 4 to 5 turns out. Turn the main needle in. clockwise, until it stops. DO NOT FORCE IT. You could place a piece of fuel tubing on the fuel inlet nipple and blow through it and screw it in until the flow stops, be sure the throttle barrel is in the full open position. Now unscrew the main needle 4 to 5 turns.
Next set the idle air bleed. Close the carburetor until you reach the lowest speed possible without the engine dying. Turn the air bleed screw in to richen the mixture and out to lean it. In restricts the additional air being bleed into the carburetor..
The barrel stop screw does just that. It stops the barrel from closing completely and may need to be unscrewed slightly to obtain a low enough idle.
Click here to read general information on tuning a carburetor.
The KAVAN carburetor is also made so you can adjust the mid range mixture. THIS PROBABLY DOES NOT NEED TO BE DONE.
By loosening the spray bar lock screws and rotating the spraybar SLIGHTLY you can affect the mid range mixture. You may need to adjust the high and low speed setting you you mess with this.
The above information is provided as a guide. Since MECOA/K&B has no way of determining the ability of the individual using and understanding this information, we assume absolutely NO RESPONSIBILITY for any damage to person or property from the use of this information.

[CARAPIS]

..., αντεκαι κατι ακομη...


How to adjust needle valves on aircraft engines
The number of turns out on a main needle is an arbitrary starting point. No set number of turns will be correct as the setting will vary with fuel, air density, elevation, humidity an temperature. You have to learn to tune your engine. A good starting point is 3 to 5 turns out on the high speed and and the low speed should be backed out to a point where it is not affecting the high speed mixture. A model engine makes sounds that will tell you how it's performing. You'll have to listen very carefully for them, recognize their message, and make adjustments to the fuel control needle valves accordingly. The mixture of fuel and air is controlled by the amount of fuel metered by the needle valve. SLOPPY RICH MIXTURE running is characterized by a very slow, irregular, sputtering exhaust sound. The exhaust gas will be very smoky and contain many droplets of oil. NEVER RUN AN ABC ENGINE AT THIS SETTING. The cylinder is not able to heat properly and the fit will be ruined in a short time.
RICH MIXTURE running is characterized by a slower, sometimes irregular, sputtering exhaust sound. The exhaust gas will be smoky and probably contain small droplets of oil. NEVER RUN AN ABC ENGINE AT THIS SETTING. The cylinder is not able to heat properly and the fit will be ruined in a short time.
FOUR CYCLING or SLIGHTLY RICH running is a rich type setting, but it is fast enough to pull the airplane. This is the setting you normally look for before launching the airplane because the engine will run leaner when airborne.
PEAKED OR TWO CYCLE. As the main needle is closed (clockwise), it reduces the amount of fuel mixed with the air drawn into the engine. At a specific point, which varies with each engine, air temperature, altitude and relative humidity, the exhaust note will change quickly into a smooth, powerful note. If the needle is closed further, the note will stay smooth, but will weaken. The peak occurs just at the break point from a rich setting and further leaning will ruin the engine. A lean setting raises the engine heat above the safe point, reduces lubrication, and destroys glow plugs due to high combustion temperature. This is very harmful to the engine and your investment. Learn to tune the engine before flying. Remember, a little rich is always preferred for long motor life.

Here are the frequently asked questions...
How many turns outs should my needle be set. Turns out are an arbitrary starting point and should not be considered a correct setting. If we knew exactly how many turns out a needle should be set you wouldn't need a needle to adjust. You have to follow procedures below to obtain the correct settings. How do I set the high speed adjustment? First be sure the idle needle is not interfering with the high speed adjustment as described in the next step.
If you have a new engine read How to break in an ABC engine
or How to break in a Ringed engine

After the engine starts open the throttle to the full open position.
Unscrew the main needle...
if the engine slows, it is on the rich side of the setting, slowly turn the needle in until the desired mixture is achieved as described above.
if it speeds up, it is on the lean side of the setting, continue unscrewing the needle until the engine begins to slow. Now you are on the rich side of the setting, slowly turn the needle in until the desired mixture is achieved as described above.


Can't get low speed adjustment right. For carbs with a low speed needle in the center of the throttle barrel like on all the MECOA's & GMS's:
The high speed must be adjusted correctly before the idle mixture can be set. Unscrew the idle needle until it stops or the head of the needle is flush with out side of the receptacle it screws into. At this point we know the idle mixture will be very rich and not interfering with the high speed needle. Start the engine and open the throttle to full speed. Adjust the high speed needle to the correct setting. Close the throttle to the lowest possible speed without the engine stopping. Now screw the idle needle in, the engine should speed up. Again close the throttle to the lowest possible speed without the engine stopping. Screw the idle needle in again, the engine should speed up. Keep repeating this procedure until a low idle is archived.
Using this method, you will always obtain the correct idle setting because you will be starting from rich setting moving towards a leaner correct setting.
Engine leans out after running for a while. This is usually caused by a pin hole in the pick up tube inside the fuel tank. Check for air bubbles in the fuel line with the tank nearing empty while the engine is running. If you see bubbles when the fuel level is low and not when the tank is full there is a pin hole that is being exposed when the fuel drops below it exposing the hole to air. Replace the fuel line. Engine leans out, then richens. Mixture never stays correct. This is typically caused by debris in the carb
plugging and unplugging the needle orifice. This causes irregular mixture setting at high RPM's. Disassemble the carb and clean in the main needle passage and spray bar.
Another cause of this is the pressure tap in the muffler. Some oils in fuels can cause the tap to be plugged up not allowing pressure to the tank and in turn depriving the engine of fuel, then the oil will blow through the line providing pressure to the tank providing more fuel to the engine. Hence, pressure, no pressure, as you fight to find the correct adjustment.
Engine leans out when it gets hot. This is sometimes caused by loose head screws. Tighten all the head screws in a cross torquing pattern. Fine tuning the idle mixture. Start the engine and open the carburetor to the full open position, then adjust for peak R.P.M. with the main needle as previously described. Close the carburetor barrel slowly until the lowest possible speed is reached without the engine stopping.
Go to full throttle after about 10 seconds of idling. If the engine gains speed slowly, the idle mixture is too rich. If the engine stops, the idle mixture is too lean. Turn the idle needle clockwise if mixture is too rich and counterclockwise if too lean.
The engine will accelerate from idle to full throttle smoothly and instantaneously when properly adjusted. The engine may not idle well at a low setting or accelerate as quickly until it is has some running time on it.


The above information is provided as a guide. Since MECOA/K&B has no way of determining the ability of the individual using and understanding this information, we assume absolutely NO RESPONSIBILITY for any damage to person or property from the use of this information.

[jppp]

το αεροπλανο πεταξε σημερα πρωτη μου φορα θερμικο
ολα τελεια!!!

[jppp]

με μεγαλη χαρα ο κινητηρας της κ&β 28αρης ξαναζωντανεψε μετα απο 15-17 χρονια ηρεμιας η χαρα μου ειναι απεριγραπτη οχι γιατι εκανα κατορθωμα αλλα
τελικα εφταιγε η εξατμιση και ευτυχως που δεν επεσα εξω
^%^
κραταει ρελαντι ανεβαζει κανονικα, αποτομα ,ελπιζω συντομα να τον δω να ωθει ενα αεροπλανακι