Futaba 401 or JR 770 (8900) - HeliFreak
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Old 01-06-2009, 02:14 AM   #1 (permalink)
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Default Futaba 401 or JR 770 (8900)

Hello
I have the vibe 50 with Futaba 7C 2.4, which Gyro is the most powerfull and how can I programe it in my transmeter. thanks.

Please I really want the setup tips for the Gyro.
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Old 01-06-2009, 02:20 AM   #2 (permalink)
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JR 770 with the 8900G is a very nice combination. Using that on my TREX 600CF.
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Old 01-06-2009, 02:23 AM   #3 (permalink)
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Default JR 770

How to setup the 770 in 7c Radio then, my friends say it is so hard to setup it ???
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Old 01-06-2009, 03:59 AM   #4 (permalink)
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I don't own a 7C radio. I don't know why it is hard to setup with that radio, it should be the same for all the radios. The only setting you do in the radio is to setup the gyro gain. The 770 should be as easy as the 401 to setup, though I've heard the 770 is a little more sensistive to setup, but it works better when setup correctly.

When it comes to setup the gyro, remember to set the endpoint values of the rudder to the highest to get higher resolution. Decrease the D/R in the radio of the rudder to decrease piro-speed. Also remember to adjust the expo on the rudder channel (on Futaba radio, decrease the expo value from 0 to negative to decrease the sensitivity of the rudder).

I found this thread:
https://www.helifreak.com/showthread.php?t=71096

Edit:
Also check this:
https://www.helifreak.com/showthread.php?t=78591
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Old 01-06-2009, 05:12 AM   #5 (permalink)
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Default Vantskruv

Thank you so much.
I am going to buy the JR 770, I like the Japan Radio (JR) products, so my next Radio is gonna be JR DSX9.
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Old 01-06-2009, 06:20 AM   #6 (permalink)
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https://www.helifreak.com/showthread.php?t=95258
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Old 01-06-2009, 08:08 AM   #7 (permalink)
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The thing is, a 770 does NOT setup like a 401. So follow the vids and there is a long thread in the main section about setting one up.

People set them up like they would a 401 and then get mad because it doesn't work. It is NOT a 401.
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Old 01-06-2009, 12:02 PM   #8 (permalink)
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If you look on the Vibe 50 at the tail linkage, then you see that when everything is 90 then the tail blades have some pitch to counter-act torque. (right pitch) I Used rate mode to get my tail linkage adjusted dead nuts 90 degrees when hovering (i know thats not what they say to do but it works wonderfully). After test flying, i have dead equal piro rates and stops either direction using the same atv's value on each side. At the recomend vibe 50 mannual setting of 105%, you will have an INSANE piro rate. Piros so fast the tail is nearly invisable. Use 50% expo to start.

I would put the link ball 14mm out on the servo wheel to start. the recomended 17mm is too far and you will have to reduce the gain way down to get rid of tail wag. Im at 60 in my gryo sense menu on a dx7 and so far, in backwards-inverted flight, the 770/8900G is holding good.
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Old 01-06-2009, 02:41 PM   #9 (permalink)
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JR...Definately! 0 Problems.
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Futaba 10CHP, JR VIBE .50 (8717 cyclic,8711 throt,G770/8900G, YS.50,Reactor X,MultiGov Pro,CY Radix 600s, CY 92mm Tail.) BLADE 400- Scorpion2221-8,65MG cyclic, G770 Gyro
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Old 01-06-2009, 06:03 PM   #10 (permalink)
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Default cheech91060

Thank you so much cheech91060
and thanks for all replays, actually this web site is the best and it is better than the damn RunRyder, there are many free information to learn, I am very happy to learn some thing new each day.
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