I've recently watched a video on YouTube about servos. My tech isn't at home so I wont try and post the link. If you search for Flite Test Servos 101 you will find a lengthy instructional video on servos. Its 23:04 minutes long. I am currently cage sitting our terrier following surgery so it wasn't a struggle. I found it quite informative. For instance, if I understand it right, the torque rating we may rely on is based on the lowest hole connection of the servo arm. Sounds matter of fact but something I will definitely be more aware of when setting up a larger plane. The main reason for the post though is servos causing brown outs. I've watched a fair few of our pilots, notably the better ones inexplicably suffer control loss. Often the receiver, esc or transmitter are blamed. But servos and power drain during use may be the culprit. Particularly on larger models or during and immediately after heavy use of several controls. If your interested in that part go to 13:52 on the video and listen to and watch the demonstration. Might not have been the cause but worth understanding.
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Perhaps my last Dave-damaged model wasn't actually Dave's fault.... It was a power loss... Yes; that's what I'm going to tell people from now on. Certainly not pilot error, as I have Gold Wings!
Thanks for the info Dave. People often rely on the power of their servos and limit the control travel of the servo to tame down a wild beast (control surface movement). This is always asking for trouble, maybe not for ages, but trouble.
I always try to use the outermost holes on my servo arm, but I also use the outermost holes on the horns as well. This way, if there's any slop in the holes or servo gears, it won't affect the control surface much. Use the innermost holes on everything and you may experience flutter because of slop.
It's all about leverage, kind of like a see-saw. Two equal weight people on the outer edges balance. They still balance when they each come in 2 metres.
What Dave say's is right when mini servos are used to save weight and move large control surfaces on fast models. Digital servos draw quite a few amp, all the time. ESC's may only be rated to 3 amps. Do the math...
Or... FLY A MODEL WITH A REAL ENGINE AND NEVER HAVE THAT PROBLEM!!! except for my green stick. It definitely suffered a brown-out which caused the ground to jump up and smite it.
Everyone knows that REAL ENGINES are used by REAL men. Eklectic motors are best left for use in toothbrushes and other unnecessary things.
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24-04-2018, 10:12 PM
(This post was last modified: 24-04-2018, 10:15 PM by KENNYGLIDE.)
Just wondering if the gates are going to be fixed/open tomorrow afternoon ....Wednesday 25/4 ... Anzac Day.....? I have a maiden....
MAKING MODELS IS MEDICINE FOR THE MIND
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Wow Kennyglide, your new eklectic foamy fairly hoots!
Everyone knows that REAL ENGINES are used by REAL men. Eklectic motors are best left for use in toothbrushes and other unnecessary things.
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Yeah hoping to prop it up..... standard is 7x6.5..hard to find a size up in electric props so thinking of using 7x7. or 7x8 APC Sport Prop....ideally would like a 7x7E. or 7x8E any brand if anybody knows of one .... but yes really happy with the way it flys......
MAKING MODELS IS MEDICINE FOR THE MIND
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Has anyone viewed the calendar lately? Bunnings BBQ on 5th May.
8.30 - 11.30am Dennis, Jason, JR, Greg & Merry
11.30 - 2.30pm Brian, Dawn, Jason,JR
Need 1 more from 11.30am - 1.00pm please.
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Yeah Merry , can do..
Cheers Ken
MAKING MODELS IS MEDICINE FOR THE MIND