How to make a servo winch
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- čas přidán 30. 10. 2012
- I tried to make a video showing how to make a rc servo winch which would show the whole process from beggining to end with no breaks in video, sorry, video turned out a bit long, please fast forward through the boring stuff. I used a MG946R 208oz servo which is the most popular servo used for this application both for its strength and its low price. Most parts uses in this video can be found in www.ckrccrawlers.com, although you might find cheaper if you really shop around. Hope this video is helpfull, any question please post on coment section so others can benefit from them as well, thanks. PS: if you want to do away with POT or resistors all together a small esc can be used to control winch, ebay has 10a esc for $10 shipped that can handle 2S and work great.
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www.shapeways.com/shops/gamyr...
Thingiverse Account:
www.thingiverse.com/Gamyrc/de... - Auta a dopravní prostředky
Great tutorial! Thanks for taking the time to make it and for communicating so clearly. I can't wait to build my own winch now.
That is the nicest homemade winch I've seen. Hell nicer and much better construction than most consumer product. Nice job.
What a nice tutorial! Thanks for sharing. I'm going to have a go at my first servo winch now.
Such a cool idea, I watched it again!!
I just checked out your updated videos on your own winch, turned out nice, thumbs up bro
great video! I just built a tactic step by step with your vid and its working great!
Great video....... I didn't know you could get a servo to keep turning like that.... Thanks for showing us this... I'm thinking of other idea's now for this use.... like a crane on the back of my tug boat moving from side to side and rear. I have already purchased a winch for a rc car to use as the main winch on the crane.... You have just given me the idea of being able to turn the whole crane :) Nice one , thanks for that........
Thank you for that clear explanation :)
Very inventive. Thanks for the video.
great veido i am learning my friend so i am glad you showed the way you did i know everbody going to do there on thing on alot but great video keep them comeing
awesome tutorial, now I know how to make a servo wench
I know this vid is old. But thank u very much for doing it and keeping it up
Cool winch... Subscribed
Nice video, nice explanation. Thx man :)
the rod end is an EXTREAMY SMART idea!!!!!!!!!
Great video was going to buy one but may make my own now thanks
BRILLIANT VERY WELL EXPLAINED WELL DONE
That's a really neat winch idea man!! I will definitely be using that for a future rc winch truck project but please edit out all the boring pointless parts of the video and also Thanks for posting it either way
Thanks dude. I did it by this video 👍
Awesome tutorial thanks
Very cool and extremely well thought out and use of materials. I thought of doing this after using a servo to remote switch leds. Theres tons of applications a servo can be used for either the whole servo or just the circuit board.
Tie one end of that line to your axle and you have hydrolic suspension lol then when the back wheel cant quite get grip lift it lol. It might not work out tbh but worth a test still.
Thanks, and yes, this idea can be used for so many other cool things, for instance, I used five of the small mini size servos that I made on video 3 to make a "robotic hand" for a middle school project, needles to say my daughter got 100%, no one said she couldn't get help, right? ;)
Very cool video & information . Liked&Subscribed!
awesome idea ill definetly be trying this
I got my stuff from CKRCcrawlers website under the servo section, the aluminum rod end I got from ebay but they also have that in this website. The metal rod used to guide the cable is a spool fairlead, the drum is a sewing bobbin, the blue plate is just a servo plate from my Mad Torque crawler, and the aluminum pieces holding the servo are servo clamps.
very nice job
Excellent video.!
Thanks bro, just trying to get people actually building stuff again instead of buying stuff everyone has like you said, I feel it adds to the fun in the hobby, I hope you saw the third video in this series where I made a clean mini micro winch where I put reel inside servo :)
well done video. just some explanation for the people that want want to understrand it a bit better on why this works.
A potentio meter has 3 connections. The outer ones have a certain electrical resistance between them and the middle one is connected to the turning knob. It is a finger following a radial path over the resistance material path that is between the outer connections. So when the potentiometer is centered the finger will be right in the middle of this path. And because it is in the middle the resistance between the middle connection and the left connection is the same as the resistance between the middle connection and the right connection. Normally the transmitter will send your command via the receiver to the servo and this makes the electronics from the servo see a difference between the left and the right measuring circuit. A voltage difference. The servo driver is a sort of electronic speed controller, so with a huge voltage difference the servo motor will spin fast and with a small voltage difference the motor will spin slow. As a reaction the servo starts spinning. So as the servo spins the potentiometer starts turning and the finger will leave the center position to one of the two sides, depending on the positive or negative misballance. And it will keep turning until the ballance is restored and there is no voltage difference any more over the servo speed controller. By breaking the connection between the potentiometer and the gearbox of the servo the servo will keep spinning until you mannualy put the potentiometer in nutral position. And if you did that, it will spin again when you give input via the transmitter to spin. Just a little stick push will result in slow turning and a big stick push will result in fast turning. Just the same as with a normal servo. The difference is that the turning will not help to get the servo ballanced again so it keeps turnning until you release the stick again. I am certainly no expert but that is how I understood this working. If I am wrong in some point please tell me.
Eric Brockhus Your explanation is kind of right. The servo control electronics provide a PWM signal, which is easier to generate than a variable voltage, over the third wire of the servo cable. The circuitry inside the servo interprets the PWM signal and turns the servo appropriately.
A PWM signal (Pulse Width Modification) is basically a digital signal that turns on or off for a specific amount of time.
Well made video RC bud:) keep it up..
Nice video. And you are right. using the rod end will extend the life of the bearings. but what is not true is the fact that using a pully will even double the pulling power on the servo. It only will double the pullingpower on the hook that is attached to the pulley. the servo drum will have the same pulling power. The other half of the pulling power that is on the hook by using a pulley will be in the other end of the wire that you will attach to a point on the truck or a different tree or something. That is the whole point of using the pulley. you double the amount of pulling power by using the same winch. And it is a trade off to the pulling speed. double the pulling force while the pulling speed is half.
good job man ! thanks!
Great explanation! Some people here need links or part numbers....
I would have liked to see it *mounted* and functioning, to at least get an idea where the swivel link is mounted to the Rig. I like the idea though. That added support for the pulley was a great idea!!
Carmine 🚂
I love it!
Part two of this video shows how to wire resistors so you can do away with the potentiometer all together, if that's the way you want to go, I suggest trying both to see which works best with your specific servo, thanks for watching.
Nice work 👍
Sub and 👍
SWEET well I will be waiting!!!!!!!
this is epic im going to add it to my circle for you on G+
Ver helpful My friend!
have too try tomorrow.
very nice, thank you.
Buat itu karmana tu ga8ssssss
nice i might build one myself now
cool idea!!!!
Nice Idea, but in my place if I work 5 hours I can get 45 dollars. so I just work and get the 3 racing winch. But this really help to those who have extra servo and dont want to burn cash. keep up the good work :)
Thanks, and yes, as I've stated many times before the option of premade winches is always there, and they will always look more scale, but also remember some people might just need the increase pulling power you get from a setup like this, no scale winch comes even close in lb pulled as even this cheap servo setup. So even in some cases its not even a matter of how much money you are willing to spend, its more of how much weight do you need to pull, this servo with a loop to reduce speed and double torque lifted 35lb before it broke the plastic case(also broke the gears but Im not sure if that came as result of broken plastic), kinda impressive in my opinion ;)
outstanding :)
'
that is so cooool servo winch...
almost same as rotary servo motor
Oh that'd be perfect! Do you have a specific shop that you buy from? I found one on ckrccrawlers for I think $25 shipped?
Yes, the servo in the video itself is a Toward Pro which differs in that the front case doesn't have the brass bushings to guide the smaller gears and the Tower Pro does. I suggest the Tower Pro because it can handle the stress much better due to that small design difference, although this one in particular handled 22lb before stalling and nothing broke. I didn't notice the name when doing the video if not I would've put my Tower Pro in it, good attention to detail on your part! :)
thanks, best thing to do is use an old useless servo to test first if you like then you can get a real servo and make a really good winch, I just made one with a 408oz servo which im running at higher 8.4v which i guess would put it more in the ball park of 450oz, fun to pull stuff around :)
HI, guide from you is great, but please can you write what exactly I need to buy?I dont understand exactly when you speak about all that part, just links to everything will be enough, thanks mate!
Already have ;), I like the plane stuff too but Im not that skilled at flying them, have a bunch laying around with broken wings waiting to be fixed! Let me know when you get that winch done so I can check it out.
Great tutorial. I was trying to figure out a way to do this and my ideas were nowhere near as simple. But I will try with a screw thread rather than the bobbin since I want to haul a sail and have it hold the position without continuous power drain from the servo. Hopefully the travel of the screw will be fast enough.
I have two more variations of this video. Video 3 shows how to use a esc with brake instead of the servo controller which may be what you need :)
@@Gamyrc ok, thanks! I will check out your other videos.
FYI adding pulleys such as a snatch block do add to its pulling capacity because it reduces the load on the servo winch, not add to it.
thanks for the info 😃🚛🚗🏎️
very veery cool will have to make one whut tiers and rims are on the mini
I agree if your needs are between 3-5lb whinching power, but if you need something stronger like most 1/10 guys do this would be a better option. Also this would be usefull for anyone with a need for continous rotation servo like sailboat users.There is a place for every kind of rc enthuciast,you seem to not need the extra power and thats fine,but many people have other needs and the weak scale winches out in the market right now would just not cut it,thanks for commenting though.
nice work bud - where did the spool come from?
it seems very nice.. i have mine working now, but it doesnt work corrrectly when i conect it to the 3rd channel.. what should i do?
Where did you get the servo clamps to distribute the pressure evenly?
i have made a winch out of a cheap ebay servo and a 9g servo before and im going to use one from hobbyking next i think it has 25kg/cm of torque which is plenty. also where did you get all the hardware that you used or what are they called i know the balljoint and cup but nothing else.
Do digital micro servos automatically try to return to their middle position when the battery is removed? Or do they lock in the position that they are turned to when the battery is removed?
soo coooooool
you can use hotglue or evo stik buddy thank you
Where did you got that servo horn? Can't find it, and i need a 24t one..
awesome
Do you put it in the 3rd channel?
Thanks, just wanted to cover all bases so yu guys could build the best winch posible, I am playing around with resistors to wire the servo so you dont need the potentiometer at all so you dont get the gittering at times, will publish video this week, thanks for watching.
I like it
Just posted the video showing the resistor install, hope it helps you out.
Thanks, Im using small 10A esc to control all my winches now since I got tired of servos "creeping" every once in a while, plus 10A is more than most servo control boards can handle anyway so it wont burn up on me ;) ,ebay has them for around $7 shipped, yes the wait is long but hey its just $7!!!
Would have been nice to see the weight capability of the unit. More to the point, on a project I'm building, any weight on the server simply turns the gears until it hits the end stop! Was hoping to see how the servo reacted at holding weight at different heights.
Yeah, I would like to know how much load each of your three winches can support, for I have come up with another awesome application--an automatic fishing unit that could be attached to a side of a personal boat, with a hook or lure attached at the end of the string. Of course, that would probably require a servo that can handle more power, torque, or load. My dad would probably LOVE that, for he loves fishing and hunting. Me, personally, I would probably not want to do that for fishing (unless I was in survival mode), but more for some applications of collection/delivery. Only for my dad and for survival would I need this for a fishing unit.
You didn't take the pin out of the main shaft gear! The pin is what stops the Servo.....
PacbeltRR i think the potmeter does it you need to lock that whit a bid of glu
where did you get all the fittings from?
So I know nothing about servos etc. Would this servo be good for lowering and raising something that is say, 10 lbs? I'm trying to do an art project and I basically need a winch system to electronically lower and raise this a platform.
I've tried this with my only third channel remote which is a tf-40 and the Servo only turns one way and won't turn the other way I've tried switching the normal and reverse switch but that doesn't work all it does is change when the buttoncan be pressed either in or out help please
ok i will do. will be a while though im making a small wind turbine at the minute but il show you when i get round to it.im not that skilled either as i dont get to fly much as im either at college or its raining and really windy.
Neat
hi friend, where did you get the winch / winch kit?
I made it from different rc items. But this is a very old video, they make scale winches now for preety cheap :)
What do you use for the spool please reply
Awesome Tutorial the only little problem is the low volume of your voice. Thumbs up
Are you using your steering channel?
If you run it through a snatch block to double its pulling power it doesn't change the load on the servo
subscribed.
how do you do this with the futaba s3003?
Do you sell this finish? If you do, how can I buy 3?
Thanks
To gavin szymanski:
Hy! You cant use that remote because the third channel only on/off. I think the third channel didnt have reverse settings on that remote control just for throttle/direction. Not sure, but sure it havent got end point adjustment at third channel. So You can only use it with add-on electronic component like a winch controller.
Best regards
Gregory
Thanks for helping Gavin out, I didn't get a chance to read post before you got to it, but I would've said the same thing, most 3ch transmitters don't really offer the full functionality of a third channel, much less mixing function that is so necessary to most that spend the money on this high end transmitters.
and how about "continuously moving servo" ? ;)
Hobbypartz has it for around $15 shipped, ebay has for cheaper but the ebay ones ive bought have come with plastic guide for gears instead of brass bearing as guide, and also the one from hobbypartz had dual ball bearing where the ebay one comes with one bearing, not all ebay sellers sell the cheap one though, just the one I got them from did so I warn you :)
Gamyrc i
Super 👌. Fajny jest ten aluminiowy orczyk. Muszę takiego poszukać. 😁 Chyba że masz gdzieś link pod ręką, 😁
Thanks my friend!
Where do you Control it and where do you plug it in...
Lvk 408 I
this servo in particular would handle ten pounds, Ive been able to lift 22lb with it, but I dont thing it would last very long at that level, but ten pounds is piece of cake, it has dual ball bearing as well and its less than $20 anywhere you look for it.
Hello, Great video thaks!
I did the same but i still have a probleme! My servo is not turning constantly he's going slower always on the same place during the rotation! any idea ?
would you send me a private video to see? Maybe I can help you that way, its hard to just imagine, my guess is that you would need to play with the trim on the transmitter but it might be a bit harder since im sure you would've already tried that
1754. You should have gotten a Teflon washer like the ones on the bearings? Just a thought it was to close to call. Like a threads width.
Yeah, theres a bunch of stuff I shoudve done that would have made it better, its just that at the time I made the video I couldnt find any other video going into detail and kinda put this one together real quick to help out those looking for the info that mightve been afraid to ruin a servo trying to experiment with it. I have two more servo videos showing different variations of the idea as well, and if I had to make this video today trust me I would make it much better especially with the horrible audio! Lol, thanks for the tip though!
So I remade this using a similar servo (148oz) and modded the servo using two 10kohm resistors voltage divider. I was barely able to life 4.5lbs. Im using an external DC powersupply at 5V. Any idea why it struggles to life the weight?
i thought that most servo's were supposed to be run off 7.4V, dont try until u confirm just so that you don't blow it up
As Reuben mentioned checking the specks will give you a better idea of how much it actually pulls at any given voltage, most receivers only send 5-6v to the servo itself, so in theory they mostly are rated for that voltage, but high voltage receivers can go much higher and higher end servos will play with 7.2v all day if necessary. I suspect that the 148oz rating you got might be at those higher voltages and that's why 5v wouldn't lift much.
Reuben Horner actually most servo's are made to run off 4.8v unregulated. Now the newer servos on the market today are "HV" high voltage) that's 7.4 volts. Most HV servo's will handle 8 volts unregulated.
How about holding the servo upside down right after applying glue to keep it from running down to the potentiometer..
You could, but honestly I would suggest going with the external esc variation of my servo winch (part 3) since you can get much better control than tricking the pot like we did here :)
Cheap and affective
*effective
pretty cool bro, any applications you use it for?
As a winch, thats the whole idea
Thanks for asking, my friend. I have already mentioned an automatic fishing unit (of course, if you like fishing). You would need a more powerful, load-capable servo that has more torque, and also a lure and/or hook to catch some of those fishy-fishies. Also, I might want to take the opportunity to tell you that I have come up with very similar systems like that (without the modifying of the servo itself that this guy here did) for simply picking up objects and dropping them.
its a sewing bobbin I got from wallmart, they sell you six for 99cents :)
Correct me if I'm wrong. The servo will never stop turning regardless of what ever position is the transmitter stick/wheel at.
unless its on neutral, at that point it stops, the position of the stick will only affect the speed at which it turns. My last video on this subject shows me using a small esc (10A would do) to do away with the pot altogether, its much better set up and you can get for less than $10 on ebay.
+Gamyrc thanks
A potentio meter has 3 connections. the outer ones have a certain electrical resistance between them and the middle one is connected to the turning knob. it is a finger following a radial path over the resistance material path that is between the outer connections. so when the potentiometer is centered the finger will be right in the middle of this path. and because it is in the middle the resistance between the middle connection and the left connection is the same as the resistance between the middle connection and the right connection. normally the transmitter will send your command via the receiver to the servo and this makes the electronics from the servo see a difference between the left and the right measuring circuit. a voltage difference. the servo driver is a sort of electronic speed controller, so with a huge voltage difference the servo motor will spin fast and with a small voltage difference the motor will spin slow. as a reaction the servo starts spinning. so as the servo spins the potentiometer starts turning and the finger will leave the center position to one of the two sides, depending on the positive or negative misballance. and it will keep turning until the ballance is restored and there is no voltage difference any more over the servo speed controller. By breaking the connection between the potentiometer and the gearbox of the servo the servo will keep spinning until you mannualy put the potentiometer in nutral position. and if you did that it will spin again when you give input via the transmitter to spin. just a little stick push will result in slow turning and a big stick push will result in fast turning. just the same as with a normal servo. the difference is that the turning will not help to get the servo ballanced again so it keeps turnbing until you release the stick again.
hi there, hey man what kind of servo would you recommend for a 24v 350w
Im sorry, im not sure what you mean by a 24v 350w, did you tube cut your message?
Gamyrc i want to use two motors of 350wats powered for 24 voltios car battery, i want to put the motors to a lawn mower is cheaper if i add a servo to the front wheels and only one motor to the rear using a transmiter and receiver as well, the motors are from a scooter, thank you
Couldn't you buy just a winch and do what you did to the potentiometer and unsolder the motor and get take out the gear and then solder the which to it instead of using a chip that you can get to use it with your radio? And would a micro work for that purpose?
Yes you can, but honestly you would be better of buying the cheap esc I mentioned before (it does away with the small jittering problem), ebay sells a 10A esc with for/rev and brake (they sell without brake as well, but brake comes in handy when wanting to hold truck in place on a pull) which runs any size motor up to a 380 no problem (just connect it to your third channel on receiver, make sure to remove red wire in plug or it will supply power to receiver as well as your motor esc causing some issues at times). The controller they sell for the winch is like 30 bucks and a bit "weak" in my opinion. Now if you did get a scale winch I would suggest swapping the motor for a losi micro crawler motor, its way stronger and faster than the stock winch motor, only need to cut down the shaft a bit to fit into pinion gear of winch, also don't do this unless you get the better esc since its power (amp) hungry! P.S. Scale winch will NOT pull nearly as much as a servo winch, and will self destruct much sooner due to much smaller gears bearing weight of pull, but they look cool :)