RunRyder RC Helicopter Topic - BLS451 Glithing

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Radio - Servo - Gyro - Gov - Batt > BLS451 Glithing

WhirlyBird500
Senior Heliman
Location: Rhode Island, USA

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calling anyone out there who are using Futaba BLS451 servos. I just installed 3 of these in my Freya Evo tonight. The aileron and elevator servos are working great. I am having a problem with the one on the collective. As I move the stick from low to high in a moderate manner, not smashing the sticks but not super slow either, the servo will jump back and then return to where it was. This happens when I move the stick through its full rang over about 5 seconds. It does not seem to be in the same place each time either. Has anyone else had a problem like this? Thanks.

An email to Futaba is on its way.

01-27-2008 01:54 AM

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tchavei
rrProfessor
Location: Portugal

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You're kidding right?

I was just on the phone with a friend that has the bls451 on his stratus and he was telling me EXACTLY the same story. He sais one of his bls451 is jumping back and forth during swash movement.

Tony

--------------------
"Perfection and patience usually walk side by side..."

01-27-2008 02:28 AM

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hootowl
rrProfessor
Location: Garnet Valley, Pa.

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What radios and receivers?

'Blessed is the man who expects nothing, for he shall never be disappointed'

01-27-2008 02:30 AM

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WhirlyBird500
Senior Heliman
Location: Rhode Island, USA

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I am running a 7C with a FP-R127DF Fm receiver.

01-27-2008 02:33 AM

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tchavei
rrProfessor
Location: Portugal

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He's running a 14Mz, not sure about the reciever but probably a 149dp (I can ask tomorrow, he was going to bed when we finished our conversation)

This is not radio (tx/rx) related. All his other birds work flawlessly and he has already swapped the rx. its something on that bird. He also says that when he gets real close with his radio, everything starts to jitter which is something pretty much unbelievable being on PCM.

Tony

--------------------
"Perfection and patience usually walk side by side..."

01-27-2008 02:36 AM

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WhirlyBird500
Senior Heliman
Location: Rhode Island, USA

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Just to check I have a smart fly 5.5V regulator and another battery. The same problem only faster. I don't have much faith in these now.

01-27-2008 02:38 AM

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tchavei
rrProfessor
Location: Portugal

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He has a duralite system

Tony

--------------------
"Perfection and patience usually walk side by side..."

01-27-2008 02:45 AM

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Vic-rex600
Heliman
Location: San Jose, CA

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My BLS451s were doing the same, but only when initially started during the range check at the start of each flying session.

It looked to me that the feedback pot just needs to "break-in", if that makes any sense. In the air, even when new, however, they felt fine.

Anyway, my 3 BLS451s have settled down now (about 15+ flights on my Trex600) and are rock solid.

01-27-2008 02:50 AM

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tchavei
rrProfessor
Location: Portugal

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Well his didn't settle in flight as he was jumping all over the place and I think this problem started a few weeks after he first flew them (they were fine then)

Tony

--------------------
"Perfection and patience usually walk side by side..."

01-27-2008 02:51 AM

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Vic-rex600
Heliman
Location: San Jose, CA

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If any of my BLS451s acted-up in flight, I would definitely send it in for a check-up/warranty claim.

WhirlyBird500, strongly consider a warranty claim.

01-27-2008 03:05 AM

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WhirlyBird500
Senior Heliman
Location: Rhode Island, USA

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Vic,

I did not say all 3 acted up. Just one. I don't trust all 3 now. A 33% trouble rate, really makes you think. 22 years of Futaba stuff and this is the first time anything like this has happened. Just makes you wonder what might happen tot he other 2, thats all.

01-27-2008 03:07 AM

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Vic-rex600
Heliman
Location: San Jose, CA

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Yeah, I know. I edited my post above.

01-27-2008 03:09 AM

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TooBizzy
Senior Heliman
Location: Georgetown, Ohio USA

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I'm considering these for my P-Gasser. Will be checking back to see if this is iscolated or a wide spread issue.

P-Gasser Se, Raptor 50 Se Hyper, Raptor 30v2, Trex450se, 3dx450...

02-03-2008 09:12 PM

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tchavei
rrProfessor
Location: Portugal

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Don't know but my friend sent the affected servo back to warranty
Tony

--------------------
"Perfection and patience usually walk side by side..."

02-03-2008 10:08 PM

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WhirlyBird500
Senior Heliman
Location: Rhode Island, USA

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Mine went back last week. We shall see.

02-03-2008 11:52 PM

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Droid
Elite Veteran
Location: Deep down in the Southwest- UK

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BLS451's

160 7-8 minute flights on a 600N and i've had no issues yet......

Had a similar issue with one ACE DS1015, however on final inspection the servo had been binding against the elevator lever (QUK Vmax).

02-04-2008 01:01 AM

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tchavei
rrProfessor
Location: Portugal

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Little update.

My friend just found a regulator positive wire that was chaffing on a carbon plate... maybe that was it? kinda wierd it only affected one servo though...

Tony

--------------------
"Perfection and patience usually walk side by side..."

02-04-2008 02:29 AM

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heraldo
Heliman
Location: Araras, Sao Paulo - Brasil

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changing to fast

in my opinion the thinks in our hobby are changing to fast, radios, servos, batterys, regulators...

10 or 15 years ago, you staying using the same type of servos, batterys, engine a lot of time... now in 1 year you have to change your equipament to become update.. so in my opinios factories like Futaba had much more time to test new equipament and now a days you have to put something new every day...

02-04-2008 03:21 AM

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WhirlyBird500
Senior Heliman
Location: Rhode Island, USA

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Well received a new BLS451 from Futaba yesterday. No explanation no nothing. They even sent back the CD I sent to them with a video showing the glitching. So I don't know what to say. I installed the new servo and it glitched once. I turned the ATV down to 95% and it went away. I cycled the servo for about 45 minutes with no issue.

02-12-2008 09:31 PM

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Jay1
Veteran
Location: Colorado Springs

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Is this the case with only the bls451 or is anyone having the same issues with the bls251 for the tail servo?

Jay
Sooner or later, Gravity will win!

02-13-2008 01:25 AM

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Radio - Servo - Gyro - Gov - Batt > BLS451 Glithing

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