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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Futaba FASST › Switching from JR to Futaba
02-23-2010 02:20 AM  10 years ago
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lolo

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Montréal, Canada

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Switching from JR to Futaba
I don't want to start a JR bashing thread.
I'm switching from a 9303 to a 14MZ and it's a major step for me.
Except gyros or rudder servos, I don't know a lot of thing regarding Futaba. I'm looking for cues or DO'S and DON'T.
Any infos from you guys will help me for the future.
My new setup will be a 14MZ, a R6106HFC for a Trex 450 Pro, Two R6008HS for a Trex 500 and a Vibe 50. The receiver included with the transmitter will be in a Trex 700.
One question that comes first : antennas... I'm used to satellites. How to I hold these antennas on the frame. I'm aware of the 90° angle. But that's all...
Thanks for your help
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02-23-2010 03:31 AM  10 years ago
G Steyn

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Heidelberg, Transvaal, Suid Afrika

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Don't stress, it's a FUTABA....

I just mount the receivers, and NEVER worry about the 90 deg setup. As long as the recever is neat, and secure, I'm happy.

My point is... Your visual range is FAR less in flying a helicopter than the range of your receiver, even with a 50deg angle.

On a glider, or 1/4 scale, things might be different.
Concentrate on your weaknesses and your strengths will reward you!
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02-23-2010 08:29 PM  10 years ago
hgh001

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New Zealand

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The 90° angle between the antennas is critical for the operation of these receivers. By putting the antennas at a 90° angle will optimize the signal between Tx and Rx. This is critical for signal polarization & circulization from the Tx to Rx.

Circulation & polarization plays a significant role since the signal from Tx goes out of phase over distance. By having a 90° angle between the antennas will compensate for this effect. The signal from the Tx literally turns over distance in example it will start of vertically and will over time make a 360° turn. If your antennas aren't at a 90° angle your will miss signals from the TX.

I also had a PCM9XII with the spectrum module fitted. Read these threads:
https://rc.runryder.com/t533568p1/
https://rc.runryder.com/t565160p1/

I have my own opinion about DSM2, and have no idea what has no knowledge about DSMJ nor interested.

My skill went up by changing to a 10CAG, if I need to by another radio it will be a Futaba again, 8FG/12FG.

I have been told the Futaba Tx isn't user friendly, that is a load of bull. If you have heli experience you don't have to use the manual.

The HS receivers are awesome, you can clearly see the difference static and in flight. (7ms latency).
https://rc.runryder.com/t172571p1

I have used vinyl for to get the 90° angle between the antennas as per picture below. The unshielded portions of the antennas need to be dead straight, PS handle them with care they break easily if twisted.

The functionality on the Futaba radios is amazing, if I would have never even considered other products with the functionality, robustness the Futaba products offer. Futaba claims they spent 15 years developing FASST, I tend to agree cause it is robust, no glitches.

10CAG with 6008HS 100 paces than gave up in power down mode, compared to 30 paces, it redefines range.

Gunter, I am not saying you are wrong, but signal strength plays a significant role for the modulation on the Rx.

You won't regret changing to a 14MZ.

Heinz
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02-23-2010 09:52 PM  10 years ago
Kevin Dalrymple

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Indianapolis

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I just mount the receivers, and NEVER worry about the 90 deg setup. As long as the recever is neat, and secure, I'm happy.
Yup. this is what i have. 90 was inportant when fas came out, but not many use it anymore. You won't see the heli anymore before the signal gose out.
I have been told the Futaba Tx isn't user friendly, that is a load of bull. If you have heli experience you don't have to use the manual.
+1

If you can program a JR or spectrum you will be fine with a Futaba. It is a lot less painfull. The menus are on pages you need. meaning the pitch throttle gov and gyro and t hold are on the same menu. you do not have to turn the radio off and go to the advance menu to change stuff like a 9303. Best part link once and throw that bind plug in the trash.
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02-23-2010 10:46 PM  10 years ago
D.Magee

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kansas city mo.

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I glue two pices of antenna plastic tubing about 3 inches long 90 degrees apart to the frame you could use fuel tubing then i put the antennas in the tubing. Works real good.
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02-23-2010 10:51 PM  10 years ago
D.Magee

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kansas city mo.

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corection --I glue the tubes to the plastic nose pice not the frame.
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02-23-2010 10:58 PM  10 years ago
kcordell

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O Fallon, MO

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The 90 degree antenna placement is for 'OPTIMUM RECEPTION'. I heard of some testing (have no idea, who, what, when, where, or how far) that was done by actually twisting the ends of the two antennas together with no issues. I agree that with the ranges that we fly our model helis (not sure about 40% planes as you can get those quite far away and still see them rather well), we will probably never have any reception issues.Team Synergy/Rail, Team Scorpion, YS Engines, VelTye
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02-23-2010 11:20 PM  10 years ago
ScottV

rrApprentice

El Dorado Hills, CA

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I did the same idea as D.Magee but instead of gule I used zipties to secure 2 pieces of antenna onto my heli to get the 90 degrees.So long and thanks for all the fish!
`·.¸¸.·´¯`·.. ><((((º>`·.¸¸.·´¯`·.¸><((((º>
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02-24-2010 06:35 PM  10 years ago
lolo

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Montréal, Canada

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Thanks, guys, for all the infos/knowledge.
I'm still waiting for my 14MZ...
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