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Old Jul 20, 2012, 11:27 AM
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asaak's Avatar
Joined Mar 2012
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Hi!

I've been reading how you guys build your skywalkers, and there is something that comes up to my mind. How do you guys would replace rear servos in case that you have to? As far as I've seen, you glue them to one side of the fuselage during the build up process...but what if, for example, the rudder servo brakes up and you need to replace it? Wires are hot glued inside...

Thank you!!
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Old Jul 20, 2012, 11:55 AM
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Teamsherman's Avatar
Australia, NSW, Picnic Point
Joined Aug 2011
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Quote:
Originally Posted by asaak View Post
Hi!

I've been reading how you guys build your skywalkers, and there is something that comes up to my mind. How do you guys would replace rear servos in case that you have to? As far as I've seen, you glue them to one side of the fuselage during the build up process...but what if, for example, the rudder servo brakes up and you need to replace it? Wires are hot glued inside...

Thank you!!
I've had a rudder servo not work on me after it was installed, and to make things worse I didn't run the extensions down the tube, I glued them in next to it!

So I had to do some fine surgery and now run extensions down the outside of the tail boom with the original extensions in there for good!

Now I've glued the servos in, but have cut access hatches on the opposite side of the vertical stab.
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Old Jul 20, 2012, 02:00 PM
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Daemon's Avatar
Lakewood, Colorado
Joined Aug 2002
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Whenever I have an issue with a servo like that (in any plane), I just cut the wires and
solder the new servo wires onto the old ones, rather than worry about trying to pull
the wires through wing/fuse/whatever. If you can, just leave a little bit of slack
in the wires near the servo inside the wing/fuse/stab when you install it.

ian
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Old Jul 20, 2012, 02:04 PM
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Daemon's Avatar
Lakewood, Colorado
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Originally Posted by asaak View Post
Wires are hot glued inside...
BTW.. please don't use hot glue. It is just pure weight. Most other adhesives are either
lighter to begin with, or they rely on evaporation to cure, so they become
lighter.

ian
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Old Jul 20, 2012, 02:23 PM
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Brasil, CE, Fortaleza
Joined Jun 2011
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Too bad, have a cordless rechargeable hot glue gun to do a quick fix at the field.

I know, for that purpose it will be no problem, thanks for the tip anyway....

Mauro
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Old Jul 20, 2012, 05:30 PM
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San Marcos, CA
Joined Aug 2009
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I am going to sell my Skywalker .. pictures and listing soon - just if someone is ordering one in the next couple hours.. will come as a 80% FPV system with DragonOSD+GPS and DragonLink Antenna (just the Antenna) built into the fuselage. More to this later...
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Old Jul 20, 2012, 09:07 PM
Whats the wrst that can happn?
AdamChicago's Avatar
Chicago, IL USA
Joined May 2010
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ok I forget...rudder & elevator servo wires through the boom CF rod good or bad? I'm rebuilding the fuselage from a spare body I ordered for parts and thought it would be easier and less messy to fish it through the CF rod.

Of course wires would be heavily twisted to reduce signal interference
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Old Jul 20, 2012, 09:11 PM
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Originally Posted by AdamChicago View Post
ok I forget...rudder & elevator servo wires through the boom CF rod good or bad? I'm rebuilding the fuselage from a spare body I ordered for parts and thought it would be easier and less messy to fish it through the CF rod.

Of course wires would be heavily twisted to reduce signal interference
Wires through the boom are a good thing, very neat and tidy. The problem is shrinking the connector....

:-)
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Old Jul 20, 2012, 09:27 PM
Whats the wrst that can happn?
AdamChicago's Avatar
Chicago, IL USA
Joined May 2010
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gracias

Quote:
Originally Posted by cliffkot View Post
Wires through the boom are a good thing, very neat and tidy. The problem is shrinking the connector....

:-)
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Old Jul 20, 2012, 09:28 PM
Whats the wrst that can happn?
AdamChicago's Avatar
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Joined May 2010
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Oh hey Cliff, I responded before I realized it was you...thanks for the advice, hope your FPV is going well and thanks again for the help.

Quote:
Originally Posted by cliffkot View Post
Wires through the boom are a good thing, very neat and tidy. The problem is shrinking the connector....

:-)
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Old Jul 21, 2012, 12:12 AM
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Canberra, Australia
Joined Oct 2010
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Originally Posted by cliffkot View Post
Wires through the boom are a good thing, very neat and tidy. The problem is shrinking the connector....

:-)
Shrinking? I just remove and then reinstall the pins.

This was one of the few wires in my plane that aren't twisted beacuse I thought I'd lose too much length and add too much weight. Since it's inside the CF tube it's protected a little from RF anyway. I have no problems at all using 800mw of 1280mhz with a Hitec HS65KB (rudder) and a Align Metal gear (elevator).

As I've stated before. Just make sure you glue the CF rod into the same half as the servos install. Makes joining the halves so much easier when you dont have to worry about connecting the servos while your glueing.

Happy Days
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Old Jul 21, 2012, 08:59 AM
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Shadrack's Avatar
Winnipeg
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Quote:
Originally Posted by Daemon View Post
Whenever I have an issue with a servo like that (in any plane), I just cut the wires and
solder the new servo wires onto the old ones, rather than worry about trying to pull
the wires through wing/fuse/whatever. If you can, just leave a little bit of slack
in the wires near the servo inside the wing/fuse/stab when you install it.

ian
This makes the most sense.
Isn't hard to do this, lot less work than pulling everything out.
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Old Jul 21, 2012, 10:22 AM
Whats the wrst that can happn?
AdamChicago's Avatar
Chicago, IL USA
Joined May 2010
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Well it turns out I'm not going to run the servo wires through the boom CF rod anyhow. I devised a tail stabilization plan, based on one I saw here a while back, that will block off the one end of the rod.

I'm going to drill a small whole through the end of the CF rod to fit another smaller vertical rod through it and then put a good amount of epoxy around that whole area to lock it all together and maintain the strength of the CF where the whole was drilled...maybe a fiber sheet around it to.

I'm not too worried about tail weight because I'm nose heavy now with a 5800 4s and 1500 3s (OSD/Vid batt) in the nose
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Old Jul 21, 2012, 11:03 AM
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Joined Apr 2011
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Quote:
Originally Posted by AdamChicago View Post
Well it turns out I'm not going to run the servo wires through the boom CF rod anyhow. I devised a tail stabilization plan, based on one I saw here a while back, that will block off the one end of the rod.

I'm going to drill a small whole through the end of the CF rod to fit another smaller vertical rod through it and then put a good amount of epoxy around that whole area to lock it all together and maintain the strength of the CF where the whole was drilled...maybe a fiber sheet around it to.

I'm not too worried about tail weight because I'm nose heavy now with a 5800 4s and 1500 3s (OSD/Vid batt) in the nose
AdamChicago,

I drilled a small hole in the tail boom and inserted a small carbon fiber rod angled upward into the tail. I think this is a good strategy for strengthening the tail. Unfortunately, during one of my crashes, the tail broke off at this point. I did not use epoxy for the bonding. I think this is a good approach for stiffing up the tail section, however, during my beginner stages of learning to fly, I was tough on the Styrofoam.

Good Luck,
Hector
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Old Jul 21, 2012, 01:24 PM
Whats the wrst that can happn?
AdamChicago's Avatar
Chicago, IL USA
Joined May 2010
2,649 Posts
Hey thanks Hector, usually when I post my "good ideas" they're shot full of holes LOL. I actually didn't have a whole lot of trouble with the tail on my current Skywalker but thought since I'm re-building, why not.

I would say the tail snapping at that point was probably more coincidence than anything else, and I know a sure fire way to resolve that...don't crash! haha



Quote:
Originally Posted by texasdrifters View Post
AdamChicago,

I drilled a small hole in the tail boom and inserted a small carbon fiber rod angled upward into the tail. I think this is a good strategy for strengthening the tail. Unfortunately, during one of my crashes, the tail broke off at this point. I did not use epoxy for the bonding. I think this is a good approach for stiffing up the tail section, however, during my beginner stages of learning to fly, I was tough on the Styrofoam.

Good Luck,
Hector
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Last edited by AdamChicago; Jul 21, 2012 at 01:35 PM.
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