Control link geometry demo

[@NitroClouds]

Andrew, you have given so much to this hobby over the years. I just want to say a big thank you for your efforts in educating and promoting this wonderful hobby. You are a gentleman and a great teacher. Cheers

[@AndrewNewton]

Thanks Shane. I enjoy making videos and simplifying RC tech as much as possible

[@PhilippeLecl]

This is the best explanation I have ever seen until today. You are a mine of gold and a very talentuous video producer. Thanks a lot for all. 👍😃

[@AndrewNewton]

+Philippe Leclercq Thanks Phillipe

[@tomwolf9420]

There's nothing left to do than repeating the cheers of the pre-posters: Great Job! I've learned a lot.

[@AndrewNewton]

+Tom Wolf Many thanks. I love to simplify

[@brunoderoberto5534]

Brilliant and simple explanation without any stuttering or background music. Thanks Mr

[@AndrewNewton]

Many thanks Bruno, I usually do um and ah and forget what I'm saying

[@jasonmundy5854]

this has to be the simplest/best explanation of this subject I have seen... GOOD JOB!!

[@AndrewNewton]

+Jason Mundy Thanks Jason, I do like to simplify

[@Jimgoodwin846]

This has got to be the best illustration I have seen yet!

[@MarkFord]

Best explanation I've seen regarding servos and linkages. I now know why my FT Punjet wouldn't fly. Looks like my control horns were mounted to far from the hinge line.

[@AndrewNewton]

+Mark Ford Glad it helped Mark

[@SammSheperd]

Awesome rig you've made there! Thanks for sharing!

[@AndrewNewton]

+Samm Sheperd (SNRS) Oops just a moment and I'll spell your name correctly. Thanks Samm

[@thenatedog]

Rewatching this video again. I'm setting up an NCFM bluto and I only need like 1/16 movement up and down so trying to figure out the correct holes so your video helped again.

[@AndrewNewton]

Good to still be relevant after all these years :)

[@Rocknranchman]

Very good demonstration! I have used trial and error to achieve this with some good results but this really clears it up to me! Thanks for making and sharing this! 👍

[@MarcSinclair3]

Thank you so much for this and all your videos Andrew! No fuss, simple to understand, excellent video quality/presentations and all done in such a calm nice manner by a master modeller. Outstanding sir and much appreciated. Marc

[@AndrewNewton]

Thanks Marc, I learned from the test myself

[@waynerussell6401]

A few important points follow from your good video demo of geometry. 1) Torque - increases the shorter the servo arm 2) Resolution - increases with use of the full movement extent of the servo arm, including extended limits to 120% 3) Slop - introduced to the linkage by ill fitting pushrods, poor gear train manufacture and wear (particularly on metal gears) Torque and resolution are maximized by having the shortest servo arm possible. In some cases it is necessary to drill a hole even closer to the servo than provided. Slop is minimized with a longer servo arm. Excessive slop leads to poor resolution and flutter, particularly in ailerons. Reverse differential is not uncommon on gliders.

[@AndrewNewton]

Thanks Wayne. All good points for a more advanced demo video

[@pyrho1]

Your videos are some of the most helpful I've ever seen

[@AndrewNewton]

Happy to hear that!

[@chrishard7616]

Well presented. I think it’s good practice to optimise the mechanical setup rather than just relying on modern TX settings to adjust everything.

[@friariello76]

Very clear explanation for a newbie like me. This kind of video inspire me to start this wonderful hobby. Thank you Andrew.

[@AndrewNewton]

+Mario Scotellaro Sweet, glad it helps

[@HerbertKojetin]

Great video Andrew! Amazing how small inconsistencies could have a dramatic impact on performance.

[@AndrewNewton]

+Herbert Kojetin Interesting that there is so much more down aileron with top mounting

[@HowToDIYRc]

i some times change things machinical instead with the radio is to get the maximum torch out of the servo to make them last longer

[@AndrewNewton]

+Happy Flyer Must do a video on maximising torque and resolution

[@HowToDIYRc]

aiht cool like the way your explaining things slow & simple :D

[@oadka]

Why did somebody dislike this video?Its the best! Hats off.

[@hifinsword]

That was a great demonstration. I especially like the demo of differential. Thanks for posting it.

[@AbdullahWayMond]

Awesome plantation of the dynamics, really appreciate it

[@AndrewNewton]

Thanks, I learned from it

[@DesertVox]

Best demo on horns and servos I've seen. Thanks!

[@AndrewNewton]

Many thanks, I learned a lot making this video

[@Jimgoodwin846]

Wow, this is mind boggling to a new guy in the hobby-interesting non the less. But, good information, I was curious why my servos were not moving the control surfaces as much as I thought they should.

[@McDeslandes]

Just awesome. You have helped me probably more than anyone getting into this hobby. I'm getting huge satisfaction out of building and flying, especially scratch building. And videos like this and your other videos on your own a scratch builds are so useful and inspiring. My latest has a soft foam front inspired by the soft noses you put on some of your pushers. Let's see how she crashes!! ✈️ 💥 Cheers!

[@AndrewNewton]

Great comment thanks Tim. It will crash goooood.

[@JorgeJimenez2020]

I had not seen this video until now, this is very good information, thanks! Awesome vid.

[@AndrewNewton]

Thanks Jorge, I am happy with this one

[@kasperhansen4310]

Hey Andrew Thank for all your great videos. I have seen so many of them and learned so much of you. Thanks 🙏🏻 I have a question I hope you will help me with! I have a volantex Phoenix 2000 V2 like you and now the question! The servo arms have one hole that is drilled out so I’m only use that!! The arm on the aileron control surface have 4 holes and like you showed in this video the movement of the aileron is more in the inner holes (close to the wing) and less in the outer holes (away from the wing) but what about the torque? Will I have more torque with the less movement (outer holes). and less torque but more movement with the inner holes? I hope you can help me on this one!! Thanks Andrew

[@AndrewNewton]

Many thanks for the feedback. Yes correct, movement and torque are directly related. You are best to use the hole that gives the correct range of movement, then you are maximising the torque. The drilled-out holes may not be the best to use.

[@kasperhansen4310]

Thank you Andrew thanks for the fast reply 👍 I appreciate it

[@SnapPunchRobert]

Such a great tutorial. A lightbulb went off over my head. I had that ah-ha moment. Thank you so much Sir.

[@AndrewNewton]

+SnapPunch Robert Glad to hear it Robert.

[@rickywilson1106]

Thanks from a newbie to flying. Makes geometrical sense.

[@AndrewNewton]

Glad it helped Ricky.

[@AlbertKimTV]

Great video Andrew! Really explains what's going on with these things visually! Wow!

[@AndrewNewton]

+Albert Kim (marblekit) Thanks Albert. I had to do this for my own benefit. Couldn't work it out without actually seeing it, and I was surprised by some of the results.

[@AlbertKimTV]

+Andrew Newton Yes, visual aids are always very helpful. I'm sure a lot of other people will benefit. Thanks for sharing!

[@daffam.847]

Great visulization, thanks for the video

[@hansleatherby1032]

Thanks Andrew I always have to think through this effect but this makes it crystal clear

[@AndrewNewton]

+Hans Leatherby I couldn't think it through, this rig made it clear

[@rohitmathew5334]

Hi, It’s a nice explanation but can u relate the Servo angle and the aileron deflection angle using a equation?!

[@AndrewNewton]

That would take a mathematician, too complex for me.

[@armandoabreu6593]

Great video very informative and helpful. Thank you for sharing.

[@AndrewNewton]

Thanks for watching!

[@go4ryan]

Excellent video demonstration and explanation. Thanks for sharing!

[@travismessier6363]

Excellent demo. Thank you.

[@iabarrybuel8063]

Exactly what I was looking for. Thanks!

[@AndrewNewton]

Great to hear!

[@kathleenrohloff232]

Thank You !!!!! Perfect model and Demo ! Very much appreciate your efforts. Carl Rohloff

[@AndrewNewton]

Many thanks!

[@sipplix]

Brilliant! Please keep making videos like this, it's like a gold mine of info... Thanks Andrew👍

[@AndrewNewton]

+simon ward Plenty more to come

[@IanF-FPV]

I know this video is old but has been helpful even to this day.

[@AndrewNewton]

I still refer to it myself occasionally

[@CradyLab]

Brilliant visual aid, Andrew 👍 I love stuff like this

[@AndrewNewton]

Me too, beats any verbal explanation

[@SladkaPritomnost]

Hmm, you can do both, I mean put control horn off the edge and servo arm angled back of the vertical (when they are on the top). Differentials should work against each other. However putting control horn off and servo arm angled to the front is the worst case scenario :) Thanks for posting this INFO!

[@AndrewNewton]

+SladkaPritomnost Yes good point

[@NotRelevant1]

I recently cut two halves of a wing with a Hotwire and I’m looking to add a 7 degree dihedral before joining the two halves. Do you have any advice on how to accurately cut this angle?

[@carlosclaptrix]

I am impressed. You are a real good teacher!

[@AndrewNewton]

Thanks Hans, nice compliment

[@hirow08]

Man... Thanks a lot for your work. Much appreciated 👌

[@AndrewNewton]

My pleasure!

[@290Alenka]

Brilliant explanation

[@AndrewNewton]

Glad it was helpful!

[@Tony-ow3if]

Informative ..thanks

[@lw216316]

Brilliant - any relation to Sir Isaac ?

[@AndrewNewton]

Hope so, must be

[@Elephantine999]

Good demo. Thank you.

[@AndrewNewton]

Thanks for watching!

[@Tickleme3090]

very clear and succinct, great job.

[@AndrewNewton]

Thank you!

[@factdesignbr]

Hey sir. Why wouldnt you ever want reverse differential ? I use it for my dlgs...

[@AndrewNewton]

Beyond my expertise. What do you use it for?

[@factdesignbr]

@@AndrewNewton its just(at least in my head at first and then I realized it actually gave me longer flight times in same conditions… I used pre programmed set ups to test it up.) Having it that way, will give ya more lift than decending forces It really works.

[@7demo7review]

Fantastic

[@mostlyharmlessrc3920]

That was really useful information! Thanks Andrew

[@AndrewNewton]

+MostlyHarmlessRC For me too

[@28th_St_Air]

Very enlightening. thanks!

[@AndrewNewton]

+28th St. Air Land & Sea It was for me too!

[@harindrawisnu]

brilliant, simple adjustment and those cheap transmitter works with almost any plane

[@giomaverick8546]

Thanks! This helped me a lot!

[@SpeedsterDEN]

Nice demo Andrew, wish I made it ;)

[@AndrewNewton]

+SpeedsterDEN Thanks Soren, you have done plenty to inspire me.

[@youmanskids]

+Andrew Newton I agree!

[@srinandan6047]

This is a good explanation. What happens when you increase the length of control rod?

[@AndrewNewton]

Length has to match the servo position to keep the aileron level

[@StuntDoubleFPV]

good to know, thx for sharing

[@AndrewNewton]

Green square, clever

[@StuntDoubleFPV]

Thanks

[@SomeGuyInSandy]

Excellent video as always! Thanks =)

[@pilotmami413]

Thank you

[@AndrewNewton]

You're welcome

[@christopherlee3045]

I really like your videos andrew

[@AndrewNewton]

Thanks Chris.

[@monkeyzeetube]

nice tutorial but your servo pivot and aileron pivot are not aligned. It should be straight towards the zero of the aileron diagram.

[@jonoedwards4195]

Ahahahaa, I forgot how this works and I only performed this a couple of months ago? Early onset, Sheeesh?? Beauty Andino, stoked in Your Intel Mate. Needed to make My Galloping Ghost turn harder as Me Peepers are fried like Me Brain and another Fly away would really ruin this unreal sheeeeeeee!

[@AndrewNewton]

Sweet, hope it works

[@jonoedwards4195]

@@AndrewNewton Worked a Treat Thanks Andrew. Love My RC KZbinrs. Beauty Mate. PS: Hope Your move has been as easy.

[@sideswiped6874]

close. you have the hinge point higher than the servo's output shaft. no plane with lay down servos is made like that!

[@mikeman20001]

Good info, but it's only half the story. You didn't mention anything regarding the torque of the servo or the speed, both of which need to be considered. Another factor is the size of the control surface. Maybe you plan to do a second video on this subject ?

[@AndrewNewton]

+Mike Moore Trying to keep it simple Mike. One chapter at a time

[@captainmcadams]

+Andrew Newton Such deviously simple concept, plus if your control services don't need to move very far, with the right linkages you still get to use the whole throw of the servo, an can enjoy the 'increased resolution' ;-)

[@AndrewNewton]

+Paul McAdams Yes good idea, I may do a demo on maximising resolution

[@FPVSteve]

100th Like :) Excellent video.

[@AndrewNewton]

+Steve W Thanks for the centenary of likes

[@thomaseggenberger4365]

no need for a computer radio just have to remember my grade 7 geometry!

[@AndrewNewton]

+Thomas Eggenberger There's Sin and Cos in there somewhere but I can't remember where.

[@thomaseggenberger4365]

+Andrew Newton I can't remember either, but that won't stop me!

[@dipmansinhvaghela7300]

im so fucking stupid my flying wing crashed bcoz i forgot basic geometry i wanted max throws so i connected rod in both outer hole and for past 5 years i am doing same for getting max throwsssssss

[@AndrewNewton]

Ooops, at least you know now. Happy flying

[@dynodom4677]

Fundamental mistake! Hinge is NOT inline with Servo Axis! In Skin

[@AndrewNewton]

How would that affect the angles?

[@dynodom4677]

@@AndrewNewton It does. Hinge offset, in the skin, produces differential deflection.