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HomeAircraftHelicopterHelicopter Main Discussion › Solving tail bounce 3gx/ Futaba 9256 *Yes I am flying*!!!
11-02-2017 06:50 PM  10 months agoPost 21
rcscaleguy

rrNovice

CA, USA

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Lock out
72mhz is prone to causing lock outs if everything is not grounded properly. I’d make the switch to most any 2.4 system for your own safety when dealing with birds doing 2000 plus on headspead. Surprised while in hover you’ve not seen any issues. And if your hovering in your front yard one hit to your car will easily pay for any radio/Rx’s you might have to purchase. You should see how a heli cuts a car like a can opener and that is after the person hit throttle hold, all that energy in those blades is insane.

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11-02-2017 07:34 PM  10 months agoPost 22
Richardmid1

rrProfessor

Leeds, England

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Not sure on the crash, could be static from the belt? Could be a bec issue although the 8311 servos aren't particularly power hungry and as you were just hovering I'm not sure but it would be best to upgrade it anyway.

As for the tail bounce you will get far better results by ditching the bent metal tail control rod and mount the tail servo on the boom with a nice straight tail control rod. The bent rod going all the way to the front of the heli will be flexing like crazy!

60% of the time, it works every time!

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11-02-2017 09:58 PM  10 months agoPost 23
InvertedDude

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USA

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I switch it to DSM2

Just remember, we used FM for everything until Paul Beard decided to bring Spektrum technology.

I don't deny the risks, I do listen to your advises. Remember, I enjoy old stuff!

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11-02-2017 10:36 PM  10 months agoPost 24
EEngineer

rrProfessor

TX

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Just curious.....but how does 72MHz cause "lockouts"?

Logo 600SXs, 800XX, TDR IIs

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11-02-2017 10:45 PM  10 months agoPost 25
InvertedDude

rrVeteran

USA

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EEngineer
Static electricity from belt zapping PPM or SPCM....temp freeze/reset.

Lockout can be a freq bind from another FM matching your RX crystals.

The only time I had an issue was from using PPM back in 2002 Raptor 60...flew off on it's own!

Managed to get it back in pieces!

I started using SPCM and checking bearings for squeaks and routing the antenna away from electronic/belt and engine. No problems since then....I like FM!

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11-02-2017 10:46 PM  10 months agoPost 26
EEngineer

rrProfessor

TX

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Not lockout....just interference....

Logo 600SXs, 800XX, TDR IIs

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11-02-2017 11:14 PM  10 months agoPost 27
mike123

rrNovice

Brandon MS

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Just curious.....but how does 72MHz cause "lockouts"?
+1

I don't recall many problems with 72MHz and lockouts as I recall it was pretty trouble free so long as people could manage keeping up with the pin board. As people have talked about the new servos causing receiver problems is a real thing though. Static i'm not so sure about yes it does exist and has always been present i'm of the opinion antenna routing is the biggest problem.

Just my .02

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11-02-2017 11:28 PM  10 months agoPost 28
JuanRodriguez

rrProfessor

The Villages, Florida

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+2

Don’t recall having any “lockouts “ while on 72 ...... interference/glitches , yes..... PCM/SPCM served to mask issues that caused such interference......

Been there, done that and old enough to know better.....

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11-03-2017 04:23 AM  10 months agoPost 29
rcscaleguy

rrNovice

CA, USA

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Lockout
As stated by others bearings, esc, servos digital, when I say lockout it could be just a fraction of a second and your bird is taking a dirt nap. So yes most of us have used 72 back in the day but 2.4 will help in case your not on your game with bearings, vandagraph effects from belt drive systems. If you want to see static charge put a volt meter to your frame and another lead to the tail output shaft bearings.

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11-03-2017 04:30 AM  10 months agoPost 30
EEngineer

rrProfessor

TX

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You need a better grounding method...

Remember...static is "common mode"....is present on both positive and negative leads everywhere....

Logo 600SXs, 800XX, TDR IIs

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HomeAircraftHelicopterHelicopter Main Discussion › Solving tail bounce 3gx/ Futaba 9256 *Yes I am flying*!!!
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