I've got a trex 3dpro (yellow one)I'm also new to the rc heli hobby.I'm not new to the rc hobby but still new to the heli's.I have to say even though I'm having trouble getting things right on my chopper I love it!It's a challenge to say the least(I built mine).Any way like I said I'm having lots of trouble ,it seems like my trex is spinning up the wrong way....? I read somewhere that the rotation on the main blades should be clockwise and the rotation on the tail blades should be counter clockwise,is this right?My tail rotor is clockwise running just like my main blades.I replaced the main drive gear after striping it out on a spin up and I might have put the one way bearing in backwards if I did would this cause this.I do have a lot of questions on my chopper but I'm learning and I want to try and get as much done on my own(I learn better that way).I have the eclipse 7 tx also.So any advice or help would be nice.

Your tail blades should spin counter clockwise right... If the Tail blades are spinning clockwise you need to twist the Tail belt.... As for putting the 1-way bearing in backwards not sure if that would cause the problem..

Good luck

I am in the final steps of my T-rex and I had the same issue. the tail belt was the wrong way, and so was the one way. the instructions were wrong, the characters on the one way went the other way.

Thanks guys your info was right on,that solved that problem quick.I've also jumped by leaps and bounds and have corrected most of everything else on my trex,I do need to get the blades balanced a little better and the swashplate just a little tighter in movement but that will come .I was able to hover it just a little bit(awesome).I can tell you that the fms sim is a waste of time even with the transmitter it's not even close to the real thing,it's fun to play with though.I think the best way to learn is to patient and learn how to hold the tail before you even try to hover.I guess control it and not let it control you.I also think that the hitec servos (50&55)are ok but they definatley need metal gearing (way to easy to strip,I've already had to fix 2)for the money you spend it should be that way.The futaba gyro(240)is great no problems at all.So far I think the weakest part fo the heli is the tail boom itself and that section of the chassis.Well guys thanks for the help.

Use of any sim is never waste of time, it's boring yes, but your progress after learning to hover will be much better with use of any sim, take it from another newbee that don't like sims either...

Hey Norrmannen,

Agreed. Even the less than top of the line FMS is great for learning to hover. Especially if you add some wind and / or make sure that your controls aren't 100% properly trimmed out, by changing the trim on the TX a notch after calibrating them in FMS, the FMS-model for the T-Rex 450X that I downloaded responds reasonably like the real thing. With perfect calibration and no wind, FMS seems to be a bit too easy and it probably won't simulate 3D-moves too well. I have flown inverted and landed safely right side up in FMS several times, but it'll probably be a while before I'll try it on the real thing. :-) I'm now at the stage where I'm going to start on learning nose-in with my T-Rex, so I'm going to make sure I'll be able to do it on the sim first.


Grtz,

Traveller