thomasaurus

My Feedback: (43)

Well, I've finally gotten the hint and I bought a Futaba T8FG 8 channel 2.4 ghz radio.
I have a H9 P-47 150 that has JR S791 retract servos in it and I can't for the life of me get them to work.
They work fine on with my 9CAP FM and all the other servos I have in it(Power HD's) work with it, just not the
JR's. Anybody give me an idea? I've tried changing them to different switches and nothing....


Thanks
Tom

jetmech05

the programming for your new 8 should be the same as the old 9...go back to your 9 and copy to the 8 screen by screen...you must be missing something on the programming

ChuckW

The servo brand should make no difference.I'm using this radio with a TF P-47 and the retracts work great. I just went intoto the LNK menu then into FUNCTION, selected the gear channel and assigned the control switch. Sounds like you have that covered though.

TimBle

have you plugged the servo into the correct channel on the receiver.....





just asking

hrrcflyer

Tom,

A friend of mine had the exact same problem except it was with his 10C. He learned that his JR retract servo will not work with the older FS type FASST receiver. He could plug ANY other servo into the retract channel and it would work fine. He also told me it had something to do with which mode you programmed the transmitter to send the signal in and said that it would work in 7CH FASST mode but not the 8CH FASST mode. My friend said he was going to try one of the new HS FASST receivers, but I haven't had a chance to talk to my friend lately to see if he was able to solve the problem yet.

Hope this helps.

David

thomasaurus

My Feedback: (43)

Thanks, I am NOT going crazy

BubbasanJohn

i know this is late but I too was just having this problem after not flying for a couple years. hangar 9 p47 150. Futaba 6ex, R606fs RX, 2700mah 6v flight pack. AS built to plans the retract servos are the jr low profile retracts. From searching, found that these retracts do not operate on voltage over 4.8. Got a couple futaba step down regulators and hooked them up to the servos. Still no joy. Then I purchased a new futaba RX and the retracts work great with the step downs in place. odd but im happy I can get it flying on my 2.4 system and not have to use my 72mhz.

There has to be something with the older R606fs RX's. Futaba support said there was no reason why these would not work and really did not answer my question if 72mhz RX's lowered voltage to the servos to 4.8volts. Would still like to know this. I am thinking this is the case as there is no reason why it would work witht he 72's and not the 2.4 systems. would appreciate feedback on this if anyone cares to.

K-Bob

My Feedback: (1)

I think you are confusing the terms "FASST" and "High Speed" . If the OP should change the mode for this model. The seven channnel RX's are not high speed, the eights and above are.

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had the same issue, with 6 volts they don't work at all, with a step down they chitter chatter all over the place. with a 4.8 pack they work perfectly