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All Forums >> RC Helicopters >> Electric RC Helis >> T-Rex heli >> Futaba 6ex Good enough or not?
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Futaba 6ex Good enough or not? - 5/13/2007 12:19:29 AM   
noguy



Posts: 440
Joined: 3/26/2005
From: Oroville, CA, USA
Status: offline 		I would like any input good or bad. I currently have a blade cp pro and have reached the point where I want a more powerful and precise heli so am going to purchase a trex next.
Being that the Trex will run me much more $ than the eflite heli, I am planning on purchasing a futaba 2.4 6ex Tx.
Futaba states the heli features as follows:

Helicopter-Specific Programming Functions:

-5-Point Normal and Idle Up Throttle/Pitch Curves.
-Throttle Hold — for autorotation.
-Revo (Revolution Mixing) — mixes rudder and pitch together.
-Gyro Mixing — two gyro gain settings can be programmed and selected during flight.
-Swash to Throttle Mixing — corrects slowing of the engine's speed caused by the swashplate.
-Swashplate Types — choose from 1S (independent aileron, pitch and elevator servos linked to the swashplate), 3S (120° CCPM), or 3E (90° CCPM).
-Swash AFR — Adjustable Function Rate, for use with 1S, 3S or 3E swash types.

Will I regret purchasing only a 6 channel radio or does this radio have all that I will need?
I have no future desire for large scale models or much other than the trex. However I want to be sure that I wont be saying "Oh I wish my Tx could do that"
Does futaba's desription of the gyro mixing mean that I cannot fine tune my gain 'in flight' as I can with my cheapo eflite radio's ch5 knob?

Also I am leaning twords the Trex 450s CF because of price over a fully blinged out SE....Will I regret taking the cheap way out? I am no 3d master no even close. But I am learning fast and dont want to be limited by the heli. Should I spend more on the rex up front or just wait until stuff needs replacing before I invest in aluminum upgrades.
Please let me know your opinion whatever it may be.
Thanks, Noah

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RE: Futaba 6ex Good enough or not? - 5/13/2007 12:50:59 AM   
HeliTB



Posts: 1207
Joined: 9/14/2006
From: Fort Washington, MD, USA
Status: offline 		If you want the radio to carry you beyond the Rex I would suggest a Radio and Receiver with at minimum 7 channels. Don't get me wrong a 6 channel will work just fine. But once you want to get a nitro or bigger Heli you will need to buy another radio.


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RE: Futaba 6ex Good enough or not? - 5/13/2007 3:08:39 AM   
noguy



Posts: 440
Joined: 3/26/2005
From: Oroville, CA, USA
Status: offline 		What specifically is the 7th channel needed for?

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RE: Futaba 6ex Good enough or not? - 5/13/2007 2:05:02 PM   
bdavison


 

Posts: 3350
Joined: 8/23/2004
From: Warner Robins, GA, USA
Status: offline 		Its not the channel...its the features you get with the bigger radios that makes the difference.

The 6EXA Spread Spectrum is the best 6ch out there right now, and will fly the Trex just fine.

But Id always recommend getting the absolute best transmitter you can possibly afford. You wont regret it.

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RE: Futaba 6ex Good enough or not? - 5/13/2007 3:45:43 PM   
noguy



Posts: 440
Joined: 3/26/2005
From: Oroville, CA, USA
Status: offline 		Thanks bdavison,
Another question is the Dx7 worth the extra $100 bucks over the 6ex? I have always been a fan of futaba and that is kind of influencing me in my price range. I know the dx7 have a nicer display but as far as I can see the main functions of the radios seem the same. Am I missing something?

Also does anyone have any insite on my question about the 450s CF?

Thanks Again, Noah

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RE: Futaba 6ex Good enough or not? - 5/13/2007 4:02:02 PM   
ct420


 

Posts: 1177
Joined: 3/26/2006
From: mansfield, TX, USA
Status: offline 		I've heard the Futaba 6ex does not have a subtrim function. If that's really the case, then I would skip it for sure. Having a subtrim function sure is nice when it come time to setup the heli...


Also, the T-REX S CF is a fine heli. You don't need an SE. The metal parts are nice, and more precise, but even the base model XLs fly quite well. Any T-REX model is a good choice IMO, though I'm not a big fan of the X series myself...

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RE: Futaba 6ex Good enough or not? - 5/14/2007 4:29:29 AM   
noguy



Posts: 440
Joined: 3/26/2005
From: Oroville, CA, USA
Status: offline 		ct420 Thanks for the advice,

I looked at the futaba web site and did not see anything in the feature listings about "sub-trim" only "Digital Trim — stores trim settings for each model for aileron, elevator, rudder and throttle." Which I assume is normal trim after servo mixing.
Another question; what exctly does subtrim do for you with a heli? Is it neccesary or can optimal setup be achieved without it?

About the 450 I think Im gonna go for the 450s cf. I like the price and that I will have to assemble, that way I will be more familiar with the heli's setup from the very start.

Thanks Again, Noah

http://2.4gigahertz.com/systems/futk6900.html

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RE: Futaba 6ex Good enough or not? - 5/14/2007 5:54:12 AM   
bdavison


 

Posts: 3350
Joined: 8/23/2004
From: Warner Robins, GA, USA
Status: offline 		You cant really compare the 6EX 2.4 to the DX7.

The 6EX has a 6 model memory...the DX7 has 20 model memory.
They both have 5 point pitch/throttle curves.
They both have all the heli mixing.
The 6EX has adjustable stick gimbals, so that you can remove the ratchet if you are flying helicopters.
Also check out the RX prices too in your area.
There are other differences too, but you'll have to decide if you need them or not and if they justify the price difference.

Sub-trims are not necessary, but are nice to have. Once youve gotten the servo linkages as close as possible to centered, you can use sub-trims to fine tune them so that all the linkages are dead on.
I recommend mechanically setting the linkages and then only using subtrims on the radio if you have to. Sub-trims are just a faster, more convient way of centering servos.

If you really want the functionality of a 7ch radio, and want to stick with Futaba. I would wait for this...
http://2.4gigahertz.com/systems/futk7000.html
The 7C 2.4ghz is coming very soon, and if I had to choose between it and the DX7....the Futaba would win hands down. I have the Futaba 9C, and its the best radio Ive ever owned.




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RE: Futaba 6ex Good enough or not? - 5/14/2007 6:50:07 AM   
noguy



Posts: 440
Joined: 3/26/2005
From: Oroville, CA, USA
Status: offline 		Great info bdavison Thanks. I see where the subs would make for a much quicker easier setup.

Yeah I was looking at that 7c it looks nice. Does very soon mean within a month or two?
I have heard nothing but the best about the 9c. I would definately wait for the 7c if it will be out this summer.
I have always experianced radio issues at one time or another through my 15+ years having many different RC's. I am very interested in putting the never glitch and always alway rock solid signal nomatter what other radios could be around you. There is nothing more heart breaking than someone walking on your channel.

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RE: Futaba 6ex Good enough or not? - 5/14/2007 3:20:34 PM   
bdavison


 

Posts: 3350
Joined: 8/23/2004
From: Warner Robins, GA, USA
Status: offline 		I dont know when the release date is yet, but Im guessing sometime this summer, possibly sooner.

Seems like everyone is switching to 2.4ghz. Im sticking with 72mhz until I have to change over. I havent had any problems thus far. Many people mistakenly think that 2.4ghz is the answer to all glitching problems and that it completely eliminates any crashes due to interferance. Ive seen planes equipped with 2.4 go in from glitching or interference issues. Of course it is rare, but it does happen. Its not the complete solution, but it does have its advantages.





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RE: Futaba 6ex Good enough or not? - 5/15/2007 6:35:39 PM   
Tolla


 

Posts: 303
Joined: 9/13/2006
From: Cape Town, SOUTH AFRICA
Status: offline 		noguy
I've got the 450s CF and love it .
I have 'blinged up' everything on the head except the swash plate. My tail is stock.
At the moment, though, that blinged head is lying assembled in my spares box. Right now I' actually flying with ALL my parts stock plastic and I have no problems tossing my heli about, rools, loops , stall turns. My only recomendation when using plastic is to replace the flybar see-saw with a metal one. The plastic ones tend to break when you crash and when the flybar bends the see-saw breaks.
The plastic SF mising arms also break easily.
But as far as flying goes, the plasic stock parts actually work fine, IMO.

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RE: Futaba 6ex Good enough or not? - 5/16/2007 12:47:05 AM   
wingman77


 

Posts: 6
Joined: 3/8/2007
From: Pulaski, TN, USA
Status: offline 		I have used the DX7 and the 6ex. the DX7 is way better and I dont think I would take a brand new 6ex for $80. the Dx7 has much more features and better switches.

a friend of mine was a BIG futaba fan also and he finaly just got a DX7 and loves it he no longer uses futaba.

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RE: Futaba 6ex Good enough or not? - 5/25/2007 2:59:35 PM   
FliteMetal



Posts: 1385
Joined: 10/9/2002
From: Houston, TX, USA
Status: offline 		FYI:To answer some questions jet jocks and natural finished warbird builders might have we have posted the results of a test conducted by George Maiorana using his TU4. http://004edc4.netsolhost.com/fm__spread_spectrum.htm Discussion relative to Mark Taylor's issue was resolved as an electrical issue because there was never any finish related issues exhibited.


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RE: Futaba 6ex Good enough or not? - 5/26/2007 12:56:49 AM   
ken3148


 

Posts: 79
Joined: 4/18/2007
From: henderson, KY, USA
Status: offline 		i went through my dads old rc things and found a futaba 8uap 1024pcm radio. im starting to build a trex and was wondering how this would do or what would you recomend. its a computer radio with expenital and can mix 4 chanels.

thanks ken

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RE: Futaba 6ex Good enough or not? - 5/26/2007 1:30:03 AM   
FliteMetal



Posts: 1385
Joined: 10/9/2002
From: Houston, TX, USA
Status: offline 		You should describe your Trex a little more:^) It sounds like your dad's radio is an airplane 72 khz radio and not a 75 khz surface radio. If your Trex is a car, robot, or surface project then you need to use the 75 khz frequencies for remore ctrl.


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