Trex 450 Pro build videos

[Finless]

It can be many things. Tail blades, gyro gain, servo speed, compressed servo resolution on one side, over all compressed servo resolution (e.g. ball too far out), gyro mounting (too hard or too soft), belt slap back if running a belt, push rod flexing, etc. I have never really had to use delay except on a slower servo that was not really meant to be a tail servo.

Bob

[pinguin]

My experience is with the gyro. 500ESP comes with 780. I tried different gyro pad, but didn't help. I change 520 with JR 3500, still didn't help. Until I convert to FBL with uBeast. Tail is rock solid. I like uBeast.
But on my Tarot 450 pro with 780 and 520, I have no bounce at all.

[nandoviski]

Very helpful!! Thanks Bob.

[nandoviski]

awesome Bob! Thanks!

[VelocityRC]

+1 Thanks Bob !!

Happy Flying !!!

Bill S.

[navyjay007]

I just got new blade grip bearings installed and put it back together but I am still getting up and down play. What could be wrong. It is on a 450 Pro v2

[cpmboy]

Today Im doing a short test spooling (no flying) on my pro after slapping a new Quark on her. Well initial spooling went ok w/o much vibes...but when I spooled it down, just a few seconds before the blades stop spinning, the heli's body wobbled a bit. What would be the causes?...

[enahs]

Originally Posted by cpmboy

Today Im doing a short test spooling (no flying) on my pro after slapping a new Quark on her. Well initial spooling went ok w/o much vibes...but when I spooled it down, just a few seconds before the blades stop spinning, the heli's body wobbled a bit. What would be the causes?...

I wouldn't worry about it. It's fairly normal for a heli to "vibrate" a bit when it's spooling up/down. As long as you're not getting vibes when it's running at hover/flight speed.

[robbancs]

Mine wobbles a bit right before stops spinning because the tail blades fold by gravity.

[cpmboy]

Originally Posted by robbancs

Mine wobbles a bit right before stops spinning because the tail blades fold by gravity.

u mean loosed?...

[srgoldman]

I'm building my first kit, an Align 450 Pro V2 3Gx. I have the following piece which was packaged with the stuff for the head assembly but I can't seem to find it in the manual anywhere and no idea where it goes. Help?

[kdean]

Pitch guage helper. Put it in the place of the head button, slide a flybar through it, and helps see the angles when using the pitch guage.

[srgoldman]

Originally Posted by kdean

Pitch guage helper. Put it in the place of the head button, slide a flybar through it, and helps see the angles when using the pitch guage.

Thanks for the quick and helpful response.
Seth

[cpmboy]

its for FBL head...

[cpmboy]

Just to share a query frm a friend of mine about his trex 450 pro elevator servo linkage that connect to the swash and why its not straight up to the swash as the pitch and aileron linkages.

[J_reggie]

I see multiple photos of this servo mounted inside the head block vs the instructions way? What's the best way as I'm in the middle of my pro build?

[cpmboy]

my aileron & pitch are both inside and the ele outside (last time it was inside....bcoz I dont want to remove the block when I was replacing my cyclic servos). The downside is when u want to remove the side frame for maintenance or rewiring etc....u hv to remove the servo also......

[J_reggie]

Yeah I don't have the lingo down yet... Thanks I was worried! The only difference would be to switch ball on the servo horn right?

[cpmboy]

Originally Posted by J_reggie

Yeah I don't have the lingo down yet... Thanks I was worried! The only difference would be to switch ball on the servo horn right?

what do you mean?..

[cpmboy]

All trex 450 pro owners,
Do you have your linkage rod (ele servo to swash) at vertical positon (90 deg up straight)? and at what ball position do guys put on the arm?..........mine is not straight upward and ball at the outer hole (as in the manual) but atm it flew (hover) ok.