Hi guys Im building my first RC airplane. 4 channel .40 Trainer ARF. I just finished gluing the hinges with thin CA glue. I followed the instructions perfectly applying 6 drops of CA glue to each side of each hinge, letting them sit for 10 minutes then break them in. But after they have been broken in like 100 times they still seem sorta stiff compared to the pin hinges I have felt in the hobby shop. Is this normal? How much stiffness could the average servo take without strain?

The stiffness of a hinge is nothing compared to the airpressure that's hitting the control surface.

My one question is this: Did you have the control surface flexed while you were adding the CA? This is very important, or else the gap may be too small to allow the hinge room to flex.

I would check that and then pull on them and make sure they are in good. 6 drops on each side doesn't seem like much. Make sure all the hinges are glued in good by pulling the surface by each hinge. If you didn't have them flexed when you glued them, cut them with a sharp knife and put new ones in right next to the old ones and flex the surface while you are gluing them.

Yes I had them flexed while I was gluing them. 45 degree angel

6 drops is plenty.

You really shouldn't have a problem with them.

Now get that thing in the air!

Now, 2 more centz.
CHECK THE CONTROLL SURFACES BEFORE EVERY FLIGHT.
Make it part of the start up routine, before you start the engine, pull on the surfaces make sure none are in trouble,.....PLEASE!

Soo I don't know "trouble" because I don't really know how strong servos are and how much they are capable of pulling/pushing. How do I know If a servo is under stress or under too much load? Also, I was planning on the RD6000 Sport Radio. What do you guys think about that radio. thanks guys a bunch . much appreciation

jtatarin,

If you are refering to my post, note I said pull on the SURFACES, as in controll surfaces, ailerons, rudder and most important, the elevator.
Do this to ensure that the ca hinges havnt cracked and broken each time you fly.
If there is any failure, its not likely all will break at once, so, if you discover a broken one, dont fly till its repaired.

As far as servos, you can remove the linkage from each servo and move the controll rods or cables back and forth by hand.
There should be very little if any resistance.
If you find it difficult to move, you need to figure out whats causing it to bind and correct the problem.
If the servos are binding, youll usually hear them "hunting center" when you release the sticks.

Im not familiar with the radio you mentioned.

My rudder cable is really binding, it takes a bit of force to move it. What could I do?

oops rudder cable as in cable that turns front wheel.

Its an awfully difficult thing to help with, not being able to see and feel the stuation.
Is there any possibility of having a local club member to give you a hand?
I assure you the problem is minimal.
If you cant get help tonight and want to keep at it, inspect the routing of the cable and its alignment at each end.
Most cables will tollerate sweeping bends, the problem lies usually someplace around one end of the sleeve that guides the cable being out of alignment with its destination.
Understand??