V2 DLG build Part 3 - Spring Pull setup

[@TryThinkingAboutIt]

I wish I had found your channel when teaching teachers to give simple instructions on video ( I am retired now). You say what needs to be said, not a word more, focus on content (hard for many to achieve) and you bother about what the viewer sees as well as what they hear. Easy to say, but not easy to achieve. I greatly appreciate the effort. Thanks

[@AndrewNewton]

Many thanks Ian, that means a lot to me. I love to simplify

[@frwy1]

Simple, affordable and efficiant. In a word : Excellent ! Thanks for Sharing Andrew D.C.

[@AndrewNewton]

Thanks for commenting DC, it encourages me to do more

[@zbynekchmela7778]

This is just simply brilliant. Thank you.

[@BrianPhillipsRC]

I got another wonderful idea from watching your video, might try to replace some rubber bands on my spoilers on my new A380, and make some "C" springs, like what your did on your elevator and rudder...Thanks [again] Andrew!!!

[@AndrewNewton]

On light weigh models they work very well Brian. Going back to watch your A380 video now. Sounds interesting.

[@BrianPhillipsRC]

I'm glad you are!!! It was a LOAD of work, but I love it now. Just gotta employ some of your great ideas to fix my spoiler retention issues.

[@malbond]

Andrew you are a STAR :-) Another perfect how to video :-)

[@ZevangBSB]

Simple, clean and efficient! Congrats!

[@AndrewNewton]

Thanks!

[@scottthompson2481]

Just watched the video again Andrew , for some reason I thought the spring had to be put in under tension , but of course it doesn't , the spring tension is created by pulling in the opposite direction , also i think i'm over thinking things as 'im about to build my first DLG kit and I am , and a bit worried I will get something wrong mate . Thanks so much for getting back to me , love your videos mate .

[@AndrewNewton]

+Scott Thompson Thanks Scott. Might be good to try the spring out in some foam or balsa first. It is a bit scary the first time.

[@scottthompson2481]

+Andrew Newton Cheers Andrew. I will do , also , does the spring ever work its way up to the surface after time ?

[@AndrewNewton]

+Scott Thompson Not yet Scott. A little CA strengthens the hole

[@scottthompson2481]

Cheers mate .

[@nerome619]

Very helpful Andrew. I hope to get some local high schools making very cheap and simple DLG's and will follow this lead.

[@AndrewNewton]

+Neil Rosh Excellent Neil, sounds like a fun project

[@jazldazl9193]

Do you have a recommended plan please?

[@fox5136]

Great video Andrew,I’ve ordered a dlg toro. Gets addictive this RC flying😂👍

[@AndrewNewton]

DLGs are a whole new hobby. Love them

[@poul-erikjensen508]

Simple and superb !

[@livinggood5545]

Andrew that is amazing. Very nice. I like the ideas you come up with. Thank you for the lesson. Thank you for posting your video. I am trying to catch up on all your videos. I have been here just about all day except to help my son. I will catch up. lol

[@AndrewNewton]

Oh wow, there are lots of them. Happy viewing

[@Nonononono_Ohno]

Thank you for this great instruction! Could you please explain: When the rudder is in neutral position, then the spring is under tension, right? Doesn't this cost much more battery than a push-rod system does, where there is no tension in neutral position, and the servo doesn't need energy to hold it in neutral? What kind of spring wire can be used?

[@AndrewNewton]

Correct but the extra battery drain is insignificant. Very thin spring wire or SS wire. Might be 0.3mm, not sure.

[@baggs1955]

Hi Andrew, great video. Which side of the rudder do you attach the horn? I guess that the horn should always be on the opposite side of the plane to the throwing peg. That way during the initial part of the discus launch the string will tension and prevent the rudder being deflected by the initially high wind forces during rotation. What are your thoughts please?

[@AndrewNewton]

baggs1955 Correct. Opposite side to the throwing peg.

[@NOXFPV]

Very nice. Thanks.

[@Droneaway-72]

Tried this brilliant idea in a small hand launch model it kept pulling my servos so probably to powerful for that ?

[@AndrewNewton]

Need softer springs maybe

[@alienw99]

Nice video!

[@calebyoung1018]

Very informative! Thanks my dude!

[@ckdesign]

hi andrew - experimenting with the torsion spring hinge and here on your video i'm not seeing a bevel on one side of the elevator? i would expect that to be needed in order for the elevator to swing freely in the direction away from the side where the hinge is. i can see that this foam core is very thin but i'd still think it would get hung up if one side didn't have that angled relief. what am i missing? thanks. btw - i am finding that a plain (unwound) .018 guitar string works well for the spring - plentiful and cheap, you can get one at a music shop for a buck, giving you > 30" of material.

[@AndrewNewton]

Good tip thanks, never thought of a guitar string. There is a bevel but the elevator is so thin it doesn't really matter.

[@admanzw]

Thanks, I am about to embark on building the Ultra light SS from Andrews website and have been scratching my head trying to figure out what wire I would need for the torsion spring. I've ordered 3 lengths of Anti-Rust Plain Steel Single String .018 and can't wait for it to arrive!!

[@admanzw]

@Andrew Newton Test it out on your blog, these torsion springs are brilliant but I had no idea where to find the right material.

[@denverk7062]

Have you ever had a case where the spring wasn't strong enough to move back properly in high speeds?

[@AndrewNewton]

Not with gentle gliding but it could happen

[@LawrenceViljoen]

Great video Andrew, Thanks. I would like to use this system for a warmliner elec glider (Kunai 1,4m), a few questions - Do you think this setup will be able to handle the extra forces of that plane? Is there a lifespan on the spring itself, ie does the spring lose its torsion over time? I will use Hitec HS-5055MG Digital Metal Gear Servos, they are not cheap and nasty servos, do you think they need a counter spring or not?

[@AndrewNewton]

+Lawrence Viljoen Thanks Lawrence. I dont think it would be a good idea for a warmliner. Fast speeds and higher loads might overpower the spring torsion. I have not needed to replace any of my springs yet but they are on very light weight slow flying gliders.

[@LawrenceViljoen]

+Andrew Newton Thank you.

[@scottthompson2481]

Please do a more detailed video on this subject, as your video's are spot on , more general information would help , many thanks.

[@AndrewNewton]

+Scott Thompson There's not much more detail to share Scott. What do you want to know?

[@renatomarcondes8220]

Bom muito bom irei adotar em meus planadores aqui no Brasil boa Técnica.

[@AndrewNewton]

Glad you like it. Good luck

[@SomeGuyInSandy]

Nice detail, thanks =)

[@davemason8656]

Using this method, the servos are always under tension. Does that put a strain on the servos or is the tension not that much?

[@AndrewNewton]

Dave Mason Yes they are always under tension but they can handle it. Some builders add springs to the servo arm to counter the pull but I haven't tried that yet.

[@grahambate3384]

great video, answer my question from another video of your, cheers graham

[@AndrewNewton]

Glad you found it Graham. Great setup for a light weight glider

[@grahambate3384]

@@AndrewNewtonsaw it in one of ur other videos, how it demonstrated the spring back, cheers mate

[@jaydenmolloy1142]

hi there, I was wondering if you could tell me how thick that push rod is that you used for the spring

[@AndrewNewton]

+Jayden Molloy Hello Jayden. It's about 0.4mm stainless steel wire

[@jaydenmolloy1142]

+Andrew Newton thanks that helps alot

[@chippie461]

What is the thinkness of the spring steel?

[@AndrewNewton]

+chippie461 0.4mm

[@willywidji7631]

What size wire is used? 1mm ?

[@AndrewNewton]

0.3mm from memory

[@UnOmelette]

@@AndrewNewton what sort of wire is it?

[@AndrewNewton]

@@UnOmelette stainless steel