View Full Version : My new T-rex 450 SE

06-19-2007, 08:46 AM
Just got my new T-rex 450 SE. Hell yea! This thing looks bad @$$. Went ahead and got the SE instead of the SA. Wanted the upgrade parts anyways and the extra money came just in time. Wanted to know what ya'll think about my setup. Any suggestions, dislikes stuff like that.

430X 3550 Kv brushless motor
RCE-BL35X 35A ESC w/ Governor mode
Align High Power 11.1V 2100mAh 20C lipo
Align Gyro

Just wanted to get some input and will be post some pics. Have main frame and head done so far. Can't wait to finish this baby.

06-19-2007, 08:53 AM
Congratulations! I also have an SE but it sounds like you got the Version 2. One advantage of the V2 is it uses a larger diameter spindle which is nice. Another nice feature is they finally made the boom block reversed so the gyro mounts on the bottom side. They sure are pretty heli's huh ;-)

I have the version 2 but it's now just called the SE and the new version 2 is really a version 3.

06-19-2007, 01:25 PM
subscribing.........good setup!! Can't wait to hear about it!

06-21-2007, 12:58 AM
Have everything installed eccept for tail servo receiver and gyro. Will have pics up later tonight.

06-22-2007, 12:11 AM



This is what I have so far. Let me know if you see anything wrong.

06-26-2007, 04:06 AM
looks great! I'm so jealous!

06-26-2007, 10:25 PM


Sorry, my picture quality is not great. Pics are from my camera phone. Almost done. I put the tail servo mount on backwards. Have to rotate. Going to balance the blades when my balancer comes in. Still have some fine tuning to do, but almost finished.

06-29-2007, 04:30 AM


All I have left to do now is make sure the pitch is right. And I'm ready to fly. I spooled it up earilier today and good lord, the head speed amazing. Way more than what I'm used to with my blade. I can't wait to get this baby in the air.

06-29-2007, 04:32 AM
The headspeed is around 2400 rpm with the 12T pinion and 3000 rpm with the 13T.. Pretty cool watching and listening to it spool up huh?

07-01-2007, 07:26 PM
Yes very cool. I'm using the 12T pinion to start with. I heard the 13T bogs it down more. I'm seem to be haveing trouble getting the cg right on the heli. I have the battery pushed as far it can go forward but it still wants to tip backward slightly. Has anyone had to add some weight to the nose to get it right?

07-01-2007, 07:32 PM
I had the same problem. I used a "full size" digital tail servo and the added weight made it tail heavy. I wound up buying some of those stick on lead weights and stuck them on the bottom inside nose of the canopy to get it balanced. I hate adding weight, but it was the only soulution unless I wanted to move the gyro to the front but I didn't want to risk EMI interference. I think it took about 1oz to get it balanced.

07-04-2007, 05:14 AM
Got my first test fight today. Everything came out beautiful. No trim needed for any servo except a little rudder. Have some tail wag with throttle up and switching from flight mode 0 and 1, but I will tweak the gyro tomorrow. I just wanted to see it fly. I will have some pics of flight tomorrow, weather permitting. Its nice and responsive and lots of power, even with the 12T pinion. It scared my wife, haha. What do ya'll think would be the best servos to use for my set up. I going to upgrade to the 401 gyro later on as well as the servos. And what about some other good after market parts like better landing skids and such.

07-04-2007, 05:18 AM
Gorilla gear (super flexible landing skids), Gorilla Programmable Paddles (don't have to remove the paddles to remove the weight), Hi-Tec 65mg servo's(metal gears, precise), GY401 gyro and a 9254 (the one I have) or 9650 digital tail servo. (Then your heli will be like mine:) )

07-04-2007, 05:19 AM
Oh, and if you are getting "twitchiness" when you select mode 1, then turn down the Gain in the radio for mode 1. (assuming you are using a DX7 or similar)

07-04-2007, 05:20 AM
Nice, thanks barney. Going to price everything and see how much I'll have to fork over.

07-04-2007, 05:22 AM
Yea i still have to adjust the gain on the gyro. Will do tomorrow, i had a crowd for the first flight so I didn't adjust anything yet.

07-04-2007, 05:23 AM
Nice, thanks barney. Going to price everything and see how much I'll have to fork over.first born...ooh, and that leg looks nice!

07-04-2007, 05:28 AM
the 65mg's were 35 each, the skids were 16, the padlles around 10, and the gy401 with 9254 digital servo was about 220.

07-04-2007, 05:32 AM
yup...it's like Pesci said in lethal weapon; "they always f**k you with the gyro!"

07-04-2007, 05:34 AM
hahaaaaa :Q

07-04-2007, 05:35 AM
sorry, I am in a really weird mood tonight. for some reason I must think I am wittier than usual! lol

07-04-2007, 05:44 AM
Pre 4th celebration perhaps? or the short work week?

07-04-2007, 05:49 AM
must be the day off tomorrow and the short day today...but no liquid propulsion! that's for tomorrow and the high explosives! YEEEEE-HAAAAAAWWW!!!!!!!!!

jk....I am a responsible adult! ...now c'mere! ya'll watch this!

07-04-2007, 05:52 AM
Just a little closer.. a little closer... a little.. yeah that's it.. BOOOOM!!

07-04-2007, 05:52 AM
We can't have fireworks here. Friggin Cali..

07-04-2007, 05:54 AM
WHHHEW!! wern't that purty? hey c'mon! quit foolin' 'round. get up! you ain't hurt bad, it's just a flesh wound, ya big baby!

07-04-2007, 05:56 AM
HAHAHAHAAAA!! You ARE witty tonight!! :Q

07-04-2007, 05:57 AM
oh geez! don't encourage me! it's only gonna get worse!

07-04-2007, 03:01 PM
Same here, I have to go out to the country to blow stuff up. It would be cool to strap on a roman candle to the heli huh

07-04-2007, 04:46 PM
Vortex05 did that for Canada Day. He even posted a video. Pretty cool if you want to check it out!

07-15-2007, 12:27 AM
Got 2 flights in and then my darn charger went out on me. Had E-flite Celectra charger and after 2 charges it crapped out. Sent it back and still waiting on it to come back. So while I'm waiting I bought an Align balance charger. So I charge the battery and its about 8:30 at night and I decided to take it outside and fly under a light in the parking lot. Everything going good, just doing slow figure 8's and such, the #[email protected]%[email protected] light I was flying under goes out. I went to put it down and it must have landed alittle sideways and I hear the nasty sound of the blades breaking apart. I couldn't see anything. I know, stupid me. But not too bad damage. Blades, main shaft bent, flybar bent, tail boom, horiz fin, and stripped a servo, damn S75's. About 40 bucks, but oh well, just a reason to take it apart and play. I love taking stuff apart.

07-15-2007, 12:38 AM
Do they have metal gear upgrades for those servos?

07-26-2007, 10:21 PM
First real crash today. Flying about 5 ft from ground and it was like the devil himself reached up and grabed it from the sky. Not too bad damage, bent main shaft and broken vert fin. Bad thing is I stripped all three S75's. Pieces of crap I say. So I went ahead and got the HS-65's. Will install tonight, won't fly today, too much rain lately here. 401 and tail servo is next on the list.

07-26-2007, 10:38 PM
That's what I'm using. 65mg's and a 401. Good luck!

07-26-2007, 11:09 PM
Hey barney, I noticed the wires on the 65's are a little shorter than the S75's, did you have any problem with wire placement?

07-26-2007, 11:13 PM
No. I ran the 2 front servos forward around the aluminum frame spacer and the rear servo toward the back. They are a bit snug but they fit.

07-26-2007, 11:22 PM
Cool thanks.

07-30-2007, 09:45 PM
Well come on! Don't stop with the posts now man I can't stand it! How's it been? How's it going? I want an SE so bad I can taste it so reading your posts gives me much visceral pleasure. :silly:

07-30-2007, 10:05 PM
You don't want a 450SE.. I mean just cuz they fly so beautifully and are fully 3D capable doesn't make them awesome. Do you really want to do that to yourself? Have fun and stable flights? :Q

07-30-2007, 10:06 PM


Got the 65's installed and man what a difference! Handles like a dream now. Just need 401 and tail servo, and I'll be kickin'. Was flying yesterday made a hard turn to the left and my darn pinion slipped on the motor shaft. Thank god for autorotation. Was able the set it down nice and easy. I think it was Barney who suggested to grind a flat spot on shaft so it wouldn't happen again. Thanks Barney! Now everything is working nicely. pinion is nice and tight. And will be ordering gyro and servo in a week or two.

07-30-2007, 10:07 PM
Sorry, I can't take credit for the pinion advice. It wasn't me that suggested it but it's good info!

07-30-2007, 10:09 PM
Go with the GY401 and 9650 digital servo. I have the 9254 and it's much bigger but not really any better. The 9650 can handle 6v with no problem whereas the 9254 is rated for 5v only. The Trex ESC puts out 6v so I have to use a voltage step down regulator for the servo.

07-30-2007, 10:10 PM
Can't remember who it was then. Thanks to whomever it was.

07-30-2007, 11:46 PM
I'm not sure I know what 'handles like a dream' means. Could you elaborate please?

07-31-2007, 01:49 AM
Let's see.. "handles like a dream".. well, if the 450 is set up correctly it will hover hands off for a few seconds and the precision cyclic make it easy to direct the heli where you want when you want. It almost has a feeling of flying on rails. It handles wind without much problem and if you have a quality tail servo/gyro it stays "locked in". Does that help?

07-31-2007, 05:25 AM
yeah, really looking forward to getting my rexy in the air. hunting down a reasonable gyro now, and will probably give in and go with the 401 in the end. got my tail servo already, but I went with a futaba 3154 to keep weight down for the time being. got a motor coming and have an 30 amp ESC ready to go. I can't believe I have 4 heli's already...somebody stop me!

07-31-2007, 05:26 AM
way too much....thx. :$

08-01-2007, 04:51 AM
Barney said it just right. It hovers so stable I can let go of the sticks long enough to get handed a camera and take a picture no problem. Though I know not a great idea, I couldn't resist. A big difference between the S75's and the HS-65's.

08-03-2007, 06:43 AM
Nice one JaysonS...

Yep... HS-65's were a good move. The S75's are good servos for the micros, but they are "stretched" on the 450s. The HS-65's are a great servo for this heli...

Before you jump to the GY-401, you might want to look at the Logictech 2100 gyro... (okay, I know the 401 is a "standard" - I own half a dozen of them, and love them... but I now own a couple of 2100's, and man... this is a *nice* little gyro). It's incredibly capable, more programmable than the 401... smaller, lighter, and faster. Just MHO... and if you do get a digital-capable gyro... you might want to think about the DS-3400G for the tail... smaller, lighter, faster, and stronger than the 96xx gang... once again, just MHO...

Now, I also have an SA with the Align RCE-500X gyro (what you have) with a HS-65 on the tail, and HS-65's on the cyclic... (it's my low budget heli)... but it flies *really* well... no need to spend big $$$ for big fun. If you're not a 3D guru, it performs just as well for the "not so radical" flying (I put hours and hours on mine to warm up before switching to other helis)... My final HO.

xuzme720... uh, oh... you've passed the three heli mark already. Quite simply, you're done for. *big giggle*

08-03-2007, 06:51 AM
Thanks for the info Leap. Let me ask you, with the 500x gyro and 65 on tail do you have any problems with it yawing to the left with a little throttle jump. Not a little but a good bit. I have a S75 on now. Will the 65 fix this? It like the servo is not fast enough for the quick jump. I can correct with a little rudder but it is a pain.

08-03-2007, 08:20 AM
You're exactly spot on... the S75 lags behind the gyro's commands... but then again, the 500X is not the fastest gyro either. The 500X will handle most of the chores, but it is a bit susceptible to externals... (e.g. need more trim as the bat expends... and temp changes... etc). The 65 will definitely improve the performance on the tail over the S75... and you can see it readily.

I do little drills to "tune in" my orientation sense... like flying side-in away from me, rotating the tail 180 degrees while maintaining the velocity (velocity is both direction and speed)... reversing on the way back. Feedback on my performance is rather evident. If I'm coordinated the heli traverses a straight line... if not, it zig-zags... what is germane to this discussion is that the gyro should simply be able to keep up, and the 500X/HS-65 combo does, and really pretty well at that...

Radical throttle excursions can over demand the gyro... but I can do "pop-ups" without having to correct heading as long as it is in trim... and the 65 responds to the demands well.

I'm not sure I answered your question directly... but I can only offer *my* experiences.

Oh... and FYI, I truly *suck* at 3D... but that is simply not my passion... I'm an old geezer, and I'm more a scale flyer... give me a totally credible low approach tail-kick landing and I'm pumped. We are all different... and that is what makes this hobby so appealing. My responses are for "general" rotory flight... if you want the radical stuff (which is totally awesome to watch), you should garner further opinions.

08-03-2007, 04:11 PM
Thanks for the info. Going to buy a another 65 today until I can get my new gyro and tail servo. Thanks leap

08-04-2007, 08:38 AM
Hey... and don't forget to keep us informed on your progress!

08-14-2007, 06:19 PM
While I was tunibg my Align 450 I noticed a large amount of servo jitters when connecting up. One of the guys who was helping me suggested using "chokes" on the servo wires as the entered the receiver. Well, if you're like me you wouldnow say, " what is a choke"? My helper happened to hve 8 JR chokes which I clamped on each servo wire,looks like a pregnant monster, but it works. Apparently, there is so much electrical interference in a very small enclosed space that the servos go wild. The choke filters this interference, but the must be place as close to the receiver as posible.

08-14-2007, 08:41 PM
I have to check that out photors. Thanks fro the info.

08-16-2007, 12:56 AM
I hate waiting for parts! Why can't my LHS just all the time carry what I need when I need it. ;)

08-16-2007, 05:16 AM
Meh, wish I could have been here sooner...
Futaba S3145's are said to be VERY good tail servos, I have heard from even 3D flyers that they work better than 9650.

Also, the LogicTech T2100 HH has been quite the rage for the new market, every review I could find went in preference of the 2100 over the 410.
*That's where Heliproz comes in for free shipping + good prices

$104.99 Gyro + ~$30 Servo = Under $135!