Blade 450x set up problem

[tomatwalden]

Check on the bench with motor disconnected:
When you push the collective up, all three servos go up.
Then check if the fbl compensates in the right direction.

Actually, with the 450X, the pitch links are trailing edge. So, when you push the collective up, all three servos should go DOWN, not up!

[Nigel GF]

Great,Thanks I will give it a try.

[tomatwalden]

I have double checked everything,all seems ok,reset the Beast x,went to fly it does exactly the same thing as before,but I have noticed that just as the Heli starts to lift off the ground the right servo is (viewed from the back) moving down which is what is causing the Heli to tip to the right on take off.is this a servo problem ie needs replacing or something in the set up procedure I am doing wrong?

Just spotted this post. This is obviously your problem, the question is why is it doing that? If you click on throttle hold and move the collective up and down, do all three servos move in unison? If they do, something is throwing the BX out under power ... Possibly vibration related but I would have though that wrong compensation would be more likely.

If they don't move in unison under throttle hold, you've got the BX setup wrong - plain and simple.

If, as I say, the servos move up with upwards movement of the stick, you've also got the setup wrong, and possibly the pitch links.

Can you tell us how it reacts with collective under throttle hold?


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[maddog7]

You said you'd replaced the mainshaft but didn't mention anything about the spindle/feathering shaft. I had a minor with mine where the main was completely undamaged (as was the rest of the heli actually) but the feathering spindle was bent to 45 degrees. This suggests to me that the spindle is weak (probably a good thing) and if this is the case it could be quite likely that yours is bent, this could cause the vibes that are throwing off your beastx.
I agree with many above that it is vibes causing your issue.

Tom's test above is spot on and if your using the STD eflite servos (great performance but unreliable) I'd recommend you do that test each time before you fly since the std servo seem to go weirdly out between flights.
D

[robbancs]

Actually, with the 450X, the pitch links are trailing edge. So, when you push the collective up, all three servos should go DOWN, not up!

Opps! Thanks for the correction.