RunRyder RC
WATCH
 1 page 914 views POST REPLY
HomeAircraftHelicopterBeginners Corner › A very dumb move….servo help
09-20-2013 11:40 PM  5 years agoPost 1
RC enemy#1

rrNovice

California

My Posts: All  Forum  Topic

I have only been flying for about 2 years and still on a pretty steep learning curve, today did something so stupid on my Logo 500. A buddy helped set up my pitch to negative/positive so when I turn on my radio it has to be at low stick or it sounds an alarm. I should change this because I use the throttle hold switch and always start at mid stick. Well I powered up at low stick with the blade holders on so it went to full negative pitch making it so the servos were restricted and fighting. I never moved so quickly to get it off and it wasn't fighting it for long but I am still worried that I might have damaged or compromised something like the gears. The cyclic servos are Savox SC-1257TG and have always been noisy when on. I can't hear any abnormal sound when moving it slowly powered off. What do you guys think? What should I look out for? Just don't want to think its fine and then something happen if something was compromised.

Cut from a different piece of cloth.

PM  EMAIL  Attn:RR  Quote
09-21-2013 12:05 AM  5 years agoPost 2
wrongler

rrProfessor

Brewerton, New York

My Posts: All  Forum  Topic

If it was a very short time (a second or two} probably no damage. Just keep an eye on them.

Bill Whittaker

PM  EMAIL  GALLERY  Attn:RR  Quote
09-21-2013 12:19 AM  5 years agoPost 3
fastrc1

rrKey Veteran

Planet Brooklyn, NY-USA

My Posts: All  Forum  Topic

Invest in a servociser and or remove the linkages and cycle the servos through with the servo endpoint program in your radio if you have a radio that does that. You're looking for stripped gears and stalls and erratic performance. But like Wrongler said; they may be okay.

Eaton

RIP Roman Pirozek Jr.
Team Futaba USA
Team Kontronik USA
http://flysrw.com

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-21-2013 12:32 AM  5 years agoPost 4
RC enemy#1

rrNovice

California

My Posts: All  Forum  Topic

servos
What does "stall" refer to? Is it when the servo is engaging but can't over power whatever force may be restricting them. Kinda of like calisthenics. Sorry, don't know all the lingo yet. Thanks for the help.

Cut from a different piece of cloth.

PM  EMAIL  Attn:RR  Quote
09-21-2013 02:34 AM  5 years agoPost 5
fastrc1

rrKey Veteran

Planet Brooklyn, NY-USA

My Posts: All  Forum  Topic

Yes. That's a good analogy. It's when the servo can't overcome the resistance of the forces acting upon it. A better example would be simply using a servo that's too weak to move a control surface. Putting an extremely small n light servo on say a 700 size cyclic will induce that condition or u can hold a servo that u don't have much use for and oppose the servo horn when u put in an input. If u hold it tight enough it will stall. Hold it long enough and it will burn out due to current overload.

Eaton

RIP Roman Pirozek Jr.
Team Futaba USA
Team Kontronik USA
http://flysrw.com

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-21-2013 03:06 AM  5 years agoPost 6
jackp332

rrKey Veteran

Claremont, Nh USA

My Posts: All  Forum  Topic

Honestly if it was quick like you say, you're probably fine. Given you're running ti-geared servos you probably didn't strip anything. (Trust me youd hear it if you did) In hindsight i imagine you'll never forget this lesson

PM  EMAIL  GALLERY  Attn:RR  Quote
09-21-2013 04:53 AM  5 years agoPost 7
RC enemy#1

rrNovice

California

My Posts: All  Forum  Topic

The plot thickens...
OK, so I see the value of the pro version, it has the capability of an event log and I think the miniVbar does not. Is there anyway to rig something up? How helpful are logs?

So I have been taking it easy for a couple flights however y 2nd flight this afternoon I had what sounded and seemed like a very short loss of power. It sounded like the motor died and nothing like a bad one way bearing. It was very quick so I couldn't tell if I had any cyclic control, kind of went into fight or flight mode. It has never done that before so I suspect some how the servos could be pulling more current, at least it seems likely since I have never had any problems and then earlier today I stall out the servos for 1 1/2 seconds and then bam, power loss. Ahhhhh, I'm so pissed at myself.

Cut from a different piece of cloth.

PM  EMAIL  Attn:RR  Quote
09-25-2013 07:52 PM  5 years agoPost 8
YSRRider

rrElite Veteran

usa

My Posts: All  Forum  Topic

Step 1 remove blade holder.
Step 2 extend blades
Step 3 check switches on radio are in correct position
Step 4 make sure collective stick is at the bottom
Step 5 turn on Tx.
Step 6 turn on Rx.

This has always been the general start up procedure. Never have I heard of anyone turning their machine on at mid stick. Throttle hold or no throttle hold, if the stick is in the middle and you switch off throttle hold, the sudden start up of the blades cause them to fold and beat the heli to death. The heli should never be powered up with the blade holder on.

PM  EMAIL  GALLERY  Attn:RR  Quote
09-25-2013 08:02 PM  5 years agoPost 9
JKos

rrProfessor

Redondo Beach, CA

My Posts: All  Forum  Topic

The servos should not have damaged themselves in any way. If the servo gears cannot withstand the torque the servo can generate, then the servo design is severely deficient. This is a different case than when servo gears get stripped.
the sudden start up of the blades cause them to fold and beat the heli to death.
Not necessarily, that's what soft start is for. That's exactly how I spool up my electric helis. I don't even use normal flight mode.
The heli should never be powered up with the blade holder on.
Well, sure. But we've all done it... And if you haven't yet, you will.

- John

RR rules!

PM  EMAIL  GALLERY  Attn:RR  Quote
09-25-2013 11:29 PM  5 years agoPost 10
YSRRider

rrElite Veteran

usa

My Posts: All  Forum  Topic

I think we have all done it on accident..........

I'm old school. Heli is powered up stick down. There should always be a standard procedure and only change it if its flawed.

Start in normal mode, when stick is at zero pitch, now its safe to go to ST1. If you learn diff on elec, if/when you go to nitro, you're screwed. There is no soft start.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-02-2013 03:02 AM  5 years agoPost 11
Retired2011

rrElite Veteran

Lee's Summit, MO

My Posts: All  Forum  Topic

Yep...make sure TH is on and stick is at zero throttle - ALWAYS - before plugging in batt.

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 914 views POST REPLY
HomeAircraftHelicopterBeginners Corner › A very dumb move….servo help
 Print TOPIC  Make Suggestion 

 5  Topic Subscribe

Thursday, November 15 - 10:48 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online