Trex 500 Build Videos

[Finless]

Yes the 500 is easier to see fore sure....

Bob

[Mr. Slumber]

Thanks for the flight report Bob! :thumbup:
But let me ask one question (sorry perhaps I didn't get it): In the flight report the tail seems to be perfectly stable so what gyro did you use in flight? The 401?

Thanks again for all your work and sharing. :noteworthy

[Finless]

Yes the 401....

Bob

[melderor]

Bob, watching your field report it looks like the Align ESC soft start is much improved, is it better then the
previous Align ESC ?

[MoF65]

Hi, Bob!

Just an other question about the SolidG setup.

In your setup guide for the SolidG you could choose, among others, T-Rex 600N and T-Rex 600E. On mine I can only select a T-Rex 600. Do you know why it is like this? New/old firmware? (I got it back from "cleaning" today so it should be up to date now).


I got the answer from CY myself:
The gyros with the green stickers are the gyros that were sent back to the manufacturer for cleaning. They got the green stickers along with a version of the program that had the 600N parameters installed in the program. The one without the green sticker (they have a white sticker with “ inspected and cleaned by CJ Youngblood Ent” on the box) were hand cleaned by us and have only the trex 600 (ideal for trex 600E) in the program.


Morten

[lennydude]

Bob..........

Anyway you could give us an idea how the 500 compares to the Lepton? I know you haven't had a chance to completely tune out the 500 yet but a first impression would be fine :):)

[Antony Konnarides]

Yes the 401....

Bob

The GOOD old 401.

Great report, GREAT heli, and a GOOD bit of flying by YOU !!!!
Cant wait till mine arrives.

Happy New Year

Antony.

[helirulz]

Hi Bob,
I have a question on the setup of the solid G.

When setting up servo neutral, should i set the tail blades to exactly 0deg pitch like you did or should i give it about 8deg pitch on setup?(kinda like the DS760)

[Finless]

Even Curtis say CENTER it... This gyro does not even have a rate mode so no sense in even fooling with that.

Bob

[Finless]

OK I tached mine and Kevin's today.

Both Kevin and I are running same setup EXCEPT Kevin has the rotor tech blades and I have the original Aligns AND Kevin is running a set of K&B 30-50 sized tail blades which he cut down in length.

My heli
13T pinion 100% flat throttle curve brand new 2170 FP packs with 10 cycles
at 0 pitch on the ground was 2800
In hover dropped about 10rpm to 2790

Kevin's
13T pinion 100% flat throttle curve brand new 2500 FP Evo Lites with 15-20 cycles
at 0 pitch on the ground was 2800
In hover dropped about 110rpm to 2690

We think his head speed drop in hover was due to different blades and tail blades which are a little big for this heli... I can't wait for a set of K&B's made for this heli myself :)

So if you not close to these head speeds
1) make sure you DID program your ESC as it must learn the radio low and high throttle stick position.
2) Make sure your packs are good. Today a few more people showed up with 500s but used old 450 packs. It flew but you could tell head speed was 2400 or there abouts. Bottom line here is 2 3S packs must work well with each other. If one pack is weaker it will not allow the other pack to perform either! For you folks wanting the power then I suggest getting two 3S pack new and use them as a set so they are used an wear together evenly.

Bob

[trexflyer02]

...Kevin's
13T pinion 100% flat throttle curve brand new 2500 FP Evo Lites with 15-20 cycles
at 0 pitch on the ground was 2800
In hover dropped about 10rpm to 2690...
Sounds like 110rpm to me :P

[Finless]

Ooops.... typo... Thanks I corrected it.

Bob

[trexflyer02]

Ooops.... typo... Thanks I corrected it.

Bob

No problem. :o

[dxtarl]

Kevin are you running the tail mod on your 500?

[Finless]

No he isn't... Really not needed with the plastic grips.

Bob

[matrix1171]

hey man,
did you get your Curtis gyro ironed out yet? I will be getting one to put on my 600

[Finless]

No not yet..... Curtis is sending me another one to make sure the gyro is not at fault and then if still a problem we will be looking at the BEC noise and solution if that is the cause. Anyway not enough data to determine the problem as of yet but I can say you will be OK on the 600 as this is strictly a 500 issue I ran into.

Bob

[matrix1171]

cool... thanks man:thumbup:

[chuckk]

bob,
i've got a question about the mounting aspect of the hs-5245mg's. we all know we only get 2 sets of servo spacers with the kit. a third set of spacers installed on the fore/aft servo would get the link positioned straight up and down with the swash. however, we all know from your swash geometry video that the left and right lateral servo links are not designed to be a straight shot to the swash. what's the chance the heli was designed to have the fore/aft servo somewhat off-centered to better correlate the angle with the other 2 servos?

[th3tick]

I'd think that being off in this dimension should have no effect on geometry as the angle doesn't change through the throw - that is the arm doesn't swing in an arc in that dimension.

I do note, however, that the two front servos with HS-5245MGs and the spacers on them leave the rods angled in toward the top...

[Finless]

If you look the elevator servo is also angled in to the top in the upside down tee-pee I talked about. Thus all 3 servos tee-pee in at the same angle. Look down on it from the top of the head and you will see what I mean.

Now without spacing the servo this sideways angle is not right. Try it that way and look down from the top of the head. You will see that aint right... Sure you may be fine without it and leaving it angled but I prefer it to be right. Makes a simple spacer is not a big deal! No It's not suppose to be that way. A 9650/9657 because of the servo height is a straight shot.
BTW Align will be adding another set of spacers to the kit so I am told.

Bob

[WiscHeli]

Bob

are you going to do a vidio on the JR G770-3D any time soon ????

Thanks

[warpspeed]

Bob, finally started the build and it looks like a couple of things have changed since you filmed the vids. I apologize if you've already seen this, but as you're the person most likely to be asked I thought you might want to know: I think you already know about the mixer arm ball lengths all being the same size. The thrust washer's are now marked "in" and "out" on the back, so aside from the size differences now you can tell which is which by just looking at them. Lastly, linkage rod C, page six, is specified at 34mm rather than the 31 mentioned in the vid. Don't know WHY there's a different length now as I haven't finished-I've only just got the head together. If I find anything else I'll let ya know!

[Finless]

Yes I am aware of all these. BUT WATCH OUT for the in and out. 2 people had theirs labeled wrong! Check them to be sure!

Align did change the link length in the manual. In my setup vid you will hear me say I had to make it longer.

Anyway thanks for sharing!

Bob

[Finless]

FYI, I added notes in front of the build video links for these.

Bob