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HelicopterThunder TigerOther › Futaba R149DP Rx
12-03-2005 11:56 AM  12 years agoPost 1
Dragonfryer

rrApprentice

Singapore

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Hello,

I had a crash recently due to intermittent RX problem.

Anyone had experienced the Futaba R149DP RX giving this intermittent problem where it does not receive any input from the TX and shut itself down only to re-power up again?

This Rx is only 18 months old & was mounted on foam in a strong box.

Please advise.

Thanks

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12-03-2005 03:09 PM  12 years agoPost 2
LS1Heli

rrApprentice

Darien, Illinois

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I have owned/flown 5 R149DP RX's. Both the high & low versions and as well as the high or low version.

Never had a problem with either one. Never had a glitch.

Raptor 90SE

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12-03-2005 03:15 PM  12 years agoPost 3
Bell 430

rrApprentice

West Grove Pennsylvania

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Its funny you mention this, I work on alot of ground robots, and we use the 149 alot. we have had the same problem with atleast 4 robots, all these recvrs are about 18 months old, what a concidence

Brian Porter AMA 232513 My money flies better then I do

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12-03-2005 03:56 PM  12 years agoPost 4
Dragonfryer

rrApprentice

Singapore

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Hello Bell,

Those R149 which you work with, are they exposed to vibrations as in r/c heli?

The strangest thing is that all check on the R149 show no broken circuitry. The glitch would come and go. I had several flights without problem prior to the crash.

Do you suppose is this batch where the electronic life span is over? (we tracked oilfield downhole electronic which had been exposed to vibrations & shocks in term of cumulative time unit)

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12-03-2005 04:02 PM  12 years agoPost 5
Bell 430

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West Grove Pennsylvania

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Yes the recvrs are subjected to alot of cross country vibrations. Ours seem to keep going into a failsafe condition, but reset after about 30 seconds. I've given all of the rcvrs to our EE so hes looking into it.

Brian Porter AMA 232513 My money flies better then I do

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12-03-2005 04:52 PM  12 years agoPost 6
Tom DeWinter

rrVeteran

Quad Cities, IL

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I had a similar problem with a R149. It would often work for months. Hobby Services could never find anything wrong. After three crashed heli's they finally did the right thing and replaced it.

What will I do next time this comes up? Once I prove that it is indeed the receiver I'll set the receiver on a stump, take a 16 pound sledge hammer, and place one mighty blow dead center on the receiver. I hate to recall how much money this would have saved me.

Regards,
Tom

Quad Cities RC Whirlybirds -- FunFly July 12 & 13, 2008 Davenport IA
Plan Now to Attend!!!

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12-03-2005 06:02 PM  12 years agoPost 7
Dragonfryer

rrApprentice

Singapore

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Replacement for Futaba R149DP

Which is the suitable replacement for Futaba R149DP, I am using the Futaba 9C.

Thanks

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12-03-2005 08:38 PM  12 years agoPost 8
Butch

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New York

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Failsafe?

Sorry to hear about the crash.
Have you tested your batteries (RX and TX) for condition under load? Have you thoroughlly inspected your switch and switch harness? Inspected plugs and wiring?

If Failsafe was used, did the heli exibit any of your selected/desired settings? If so, I believe the receiver is in working order.

Low RX battery default failsafe setting = Throttle to idle.

Have you tried a frequency checker for outside interference?

Just some thoughts

The Whirlybug Bit Me!

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12-05-2005 03:23 AM  12 years agoPost 9
Dragonfryer

rrApprentice

Singapore

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Fail safe mode with R149DP

The initial reaction was to think the Rx battery had gone out. I changed out the battery but still the problem persisted.

When I switch on the power, the RX would sometime not react to the input from the Tx but would come alive only to go away again.

Also, there is now this strange throttling of the OS50 hyper at 1/4 stick which would go away when the throttle is opened further.

Confused. Is the problem caused by the RX or is something amiss in the engine itself?

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12-05-2005 08:58 AM  12 years agoPost 10
KenChoo

rrNovice

Perth, Australia

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Oh man,

This is interesting. My Tempest 3D went in 2 weekends ago and I suspect it was the receiver as well. But not the 149, the new 14mz receiver.

Ken

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12-05-2005 01:28 PM  12 years agoPost 11
Dragonfryer

rrApprentice

Singapore

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Faulty RX Crystal?

Hello

Would it be that the crystal in the RX had been rattled?

Strangely, when the Rx outer case was pressed and the power turned on, it was able to initialise the 401 gyro, otherwise the gyro LED would remain flashing waiting to be initialised.

Still the throttling is present at 1/4 stick. I don't believe its the throttle servo that had pack in because I tested that same servo with another RX and it work OK.

Lastly, no TX input seem to have been received by the RX; which led me to believe the either crystal or the Rx had busted.

All advise would be welcome, let me know of a better RX than R149DP.

Thanks

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HelicopterThunder TigerOther › Futaba R149DP Rx
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