i NEED help.

ok, so i have a sceadu evo 50 with r790 (7 channel receiver). anyway. the big 4 (throttle, ailerom, elevator, rudder) are all named easily and connected.. but there are 3 ports left on the receiver... and i have two more things to plug in.

the first is the pitch servo ... which channel do i plug that into?? the 6th channel? (called AUX 1 -- what are they anyway.) or the 5th channel (called 'Gear' - whats that also?)

the second] is the single wired gyro plug.. right now i have it in the 5th channel ('gear'.. still dont know what is it) but hopefully i know where to put that onto the controller after solving the pitch servo ? or i can just put that single wired plug anywhere (AUX1/AUX2?)

i am so lost. help!! thanks a TONN!!!!

[8D]The pitch servo plug's into ch. 6 and the single wire from the gyro goes into ch.5 probably called the gear ch.
Gear switch changes the gyro from rate to heading hold, depending on which position it is in.
Your rudder plug's into the gyro.

What radio are you using? A 9303 has a servo monitor screen, go there, move the throttle stick and see which channel rises and falls with the throttle, that will be your pitch servo.

The gyro goes into AUX 2 if you are using your gyro menu I believe.

yes i have the rudder plugged to the gyro.. which is plugged to the rudder on my reciever :-)

i have a JR7202 transmitter and JR R790 7ch receiver.. since i think the throttle stick is connected directly to the engine throttle lever (which would make sense) so then back to ptb, yes putting the single-wire from the gyro to 5th channel called "Gear" makes perfect sense.. just needed some reassurance.. anyhow, if i plug my pitch servo to ch 6, called "AUX1".. where do i control it from? i dont seem to find a place to do so.. or maybe im stupid.. or that is the left top 3-position switch? just kind of confused... would be nice if someone tells me what the pitch does anyway??

Your pitch is controlled by the same stick that controls your throttle. Your radio mixes it.
As you increase throttle you also increase pitch.
In heading hold and idle up modes your throttle stick no longer controls your throttle and you are only controlling pitch. (throttle runs at a preset speed when used. Throttle hold will have low speed to practice autorotations and idle up will have a fast speed for 3d flying)

Um sorta. Heading hold has nothing to do with throttle control.

Your pitch and throttle curves set the relationship between stick position and throttle and collective servo position. For example in normal flight mode (not to be confused with normal or rate mode on a gyro) your throttle and pitch increase from bottom stick until your helicopter hovers (at 1/2 or 3/4 stick depending on your setup)

Flip it to idle up and now your throttle stick at the bottom is -9 or 10 degrees pitch with full throttle, as you increase the stick the pitch moves towards zero and the throttle moves towards 50 percent or so. As you pass half stick the pitch goes positive and the throttle starts increasing back towards 100 percent as you reach full stick. Thats how we fly upside down.

The idea is that as you increase pitch you increase lift but you also put a greater load on the rotor system so you need more throttle to compensate to keep the head speed the same (the ultimate goal of collective pitch helis), same with decreasing pitch you want to decrease throttle so the head doesn't over speed.

yay thanks missileman, i have figured that out now so thats all good, and thanks to barracudahockey for explaining in depth

anyway. here is another question about starting my engine... yes this has nothing to do with the servos anymore. let me know if i should start a new thread?

anyway. i have an OS 50 ringed hyper and i DO NOT know how to start it. bummer. so i have my electric starter and everything ready.. and i tried to plug that into the hexagonal plug ontop so i can start it.. but i can never get the thing to spin. i mean. it makes maybe 1/4 to half a turn then i'd find that hexagonal plug on top be loose and just spinning in place.. it is A: not tight enough (but i doubt that..) B: the engine is too tight or i have done something wrong. anyone have any advice? i have my tank fueled up but the fuel is just not getting throught the pipes into the carburetor.. hmm.. please help... advices??? thanks guys

1. Go to http://www.raptortechnique.com and read up.
2. Go to http://www.pilotlocator.net/ and find an experienced heli pilot before you hurt yourself and trash your heli.

Fritz

hmm.. thanks for the reply... but.. it did not really address my problem..

A: if the hex socket is spinning on the starter shaft then it IS loose. Can't speak for the EVO but the Raptor has a hex socket held onto the start shaft by two set screws and the start shaft has two flats to receive the set screws. If these screws are loose ... the hex socket WILL spin without turning the start shaft. If the set screws are remotely loose and you have an engine with lots of compression, you might have lathed a nice groove round and round the start shaft.

1. Verify the start shaft is still intact.
2. Verify the set screws are sufficiently tight.
3. Verify the engine is not have a hydraulic lock (not flooded)

B: Fuel won't move by itself. It requires a little push from behind (ie pressure from the muffler tap to the fuel tank). If you are not turning the engine over (see possible problem above) then you are not developing pressure in the muffler and thus are not applying pressure to the fuel tank and finally you are not pushing fuel from the tank to the carb through your fuel lines (?pipes?).