random motion gearbox

I have been exploring wast of creating a random motion from a gearbox, i need this for a segment of a kinetic work i have been doing for some time now. random motion seems somewhat difficult to achieve so i came to the conclusion of using magnets! the gearbox i am working on at the moment works by orbiting one magnet around the other, the central magnet spins the output shaft while the orbiting magnet performs many rotations around the central magnet tugging it to different positions giving an almost random movement (patterns can be found). i was wondering if there were other maybe more effective methods of achieving random patterns of movement without the use of electronics.

Topic by rustlabs   |  last reply


how do i make a gearbox for a 12 v dc motor? it is already fitted with a metallic worm.

I have four rs 385 ph motors manufactured by mabuchi..i need to make gear boxes for them to make them spin around 150 rpm and its already fitted with a metallic worm...any idea?

Question by shaondip   |  last reply


Tamiya gearbox motor upgrade? Answered

Sorry about all the questions. Hi, I want to upgrade this to 7.4v so that I can run it from lipo.  https://www.sparkfun.com/products/319 Preferably I would like a motor that snaps right  in. Has anyone upgraded theirs?

Question by David97   |  last reply


No for OAWR

My tamiya gearbox motor for the OAWR did not come with a . Is there anything I can use instead of the ? If so, can it be found at a home depot, frys, hobby shop in southern cal and cheap? Please help!

Topic by crohnsninja   |  last reply


Finding 550-motor worm ?

Hey there, Recently I bought a bunch of 550-size (drill) motors from eBay, and I've really been itching lately to build some worm gearboxes out of them, the purpose of which would be a robotic arm or anything that requires huge amounts of torque. However, I haven't been able to find a site that supplies metal worms that fit on 1/8 inch shafts, at a reasonable price. Almost all sites I've seen supply only automotive-style parts, but of course  I don't need heat-treated steel. Or, for that matter, to lighten my wallet by $20 for a single worm. As for the worm itself, I don't have any other requirements other than that it needs to be metal (lots of strain on them) and have an inner-diameter of 1/8 inch. It doesn't have to have a set screw or fancy collar or anything- just a plain worm. I'd really like to find a store that sells these at a reasonable price, as I will need around 20 of them. Could someone help me out? Thanks

Topic by tech industries   |  last reply


Can you change the motor on this gearbox?

My question is that is it possible to change the motors on a gearbox like this(http://www.abra-electronics.com/products/70168-Tamiya-Double-Gearbox.html) and try to fit a slightly larger one like this(http://www.abra-electronics.com/products/29DM12V-Single-Shaft-6V%252d12V-DC-Motor.html). By the way, the reason im planning to change the motor is because my motor shield(Adafruit) needs a motor thats 4.5-25v and the one that comes with the gearbox isnt enough. 

Question by vek11   |  last reply


will this gear setup work for an RC car? Answered

For a while now i have been working on an rc car from almost scratch. i picked up a nice car for this on the clearance rack for $10, it already had a gearbox, but no gears. This was a pushtoy, after all. abyways, i found gears and filled the gearbox. will this setup of gears work well for speed in my car? or will there be more torque? for the best speed, what does my setup have to be like? (im using a high rpm motor, but not the one in the picture, the one in the picture absorbs way too much current)

Question by zack247   |  last reply


how do i even out my dual gearbox? Answered

I have a tamiya dual gearbox hooked up to a tamiya tank base. i found the one side's track goes faster that the other.. how can i fix that? i tried reversing polarity but the same side goes faster... i have the motors hooked up in series.. thanks!

Question by Chowmix12   |  last reply


diy shoulder axle/pin/shaft/dowel pin?

I would like to - create a shouldered pin* in order to glue gearwheels** to it - ask you for any advice or link that may hint me towards a solution any ideas are highly appreciated: i already had a look at misumi, conrad, rscomponents, alibaba, ebay, amazon "small parts" … but could not find any suitable solution. * pin's dimensions:                        left                   center                 right                   --------------=================--------------- diameter        1 mm             2.5 mm                1 mm length            2 mm             13 mm                 2 mm **made from delrin & brass. These gearwheels are spinning at a speed of ca. 4000 rounds per minute (a prototype*** worked well with superglued-gearwheels ) ***my prototype: 1mm steel wire surrounded by heat-shrinked tube

Question by marc_is_curious   |  last reply


Gearing a gearmotor again?

Http://www.mcmaster.com/#cadinlnord/6409k15/=ij4q34 This is the CAD of the gearmotor I want to purchase. I need to gear it AGAIN to attain my design goal of 120-150 lb in of Torque (approx. 3:1 gear ratio). Anybody familiar with this or know if it possible? Any gearboxes to recommend?

Question by nkay3   |  last reply


Which Low RPM Gear Motor?

I am working on a robot that will have a grabbing claw, of sorts, and I'm not sure what gear motors to use to actuate the claw.  It needs to have significant gripping power, so the gear motor must be low-RPM and high torque.  The two best options I have found so far are these: 1. 12VDC Gear Motor, 7 Rpm 2-7/16" x 1-5/16" Dia. 2.  Tamiya 70110 4-Speed Crank-Axle Gearbox Kit   If I used the Tamiya gearbox, I would also have to buy higher voltage motors, so the cost of the two is approximately equal.  Because of its layout, I think the Tamiya would be easier to use, but I'm worried about stripping the plastic gears.  Also, I have a smaller Tamiya gearbox, and the axle has some play in it and is extremely noisy. The 12V gear motor, on the other hand, appears to be more robust and probably has metal internal gears, but it would make my robot a bit larger. Does anyone have experience with Tamiya gearboxes?  How do they handle high loads?  If anyone has any input on these two choices, or other motors you think would be even better, I'd really appreciate the help.  Thanks!

Topic by ben_k   |  last reply


How can I turn rotational motion 90 degrees?

I want to connect a horizontal, spinning shaft to a vertical shaft so that the first shaft will spin the second. Does anyone have any suggestions other than a gearbox or pulley/belt arrangement?

Question by rogers236   |  last reply


DC motor regulation

I am planning to build a small gearbox that depends on a steady rpm from a 3V dc motor. I understand that the output rpms will change in correlation to the fluctuation of input power. My question is, if I used a regulator to regulate the input voltage from 5V to 3V, will that keep the motor rpms steady?

Topic by Tman179   |  last reply


Were can i find cheap used drills? Answered

I need about 10 old drills to rip apart for their motors and gearboxes. Garage sales are a no go as i have not seen any drills for the last 5 years and i can't buy new.  So do you guys know where i could find some

Question by FarmerKJS   |  last reply


cnc mill vs cnc router

Um two questions whats the difference between a cnc milling machine and cnc router is it that the mill moved the work and keep the tool stationary and the router moves the tool and keeps the work stationary and the next question is which do you think is better to build i want one for mainly small gears and pcbs to make a larger machine and some gearboxes? 

Question by dpsilver   |  last reply


DIY Steering Wheel

Hello, I'm new here. So, lately, I've been thinking about making a steering wheel for my PC, with a simple up-and-down gear box and 2 pedals for acceleration and brake. Steering Wheel. I'm using a polystyrene sheet, to cut out a wheel from it, and in the center, there's space for installing a phone holder. I'm planning to use my phone's gyroscope and simulate it to the PC. Pedals. I've figured by using foams underneath, we can place a nail and a foil separated and when we press the pedal, the foil touches the nail and circuit gets completed. I've a general idea, but I'm stuck on how to give that signal to PC as to simulate as a button (say for acceleration and brakes.) Gearbox. For the gearbox, I figured it might be easier to make an up-down box (as in pulling the level shifts the gear up and vice-versa.) Here too, The part where I'm stuck is giving the signal to the PC. Anyone who can help me, please?

Topic by RohitR78   |  last reply


which sensor can i use for maze followin toy robot car and the circuit diagram for the motor and sensor with Arduino Answered

Which sensor can be used for a  toy robot car that can make its way out from a maze without stoping im using  dual motor gearbox and Arduino Duemilanove USB Board and the circuit diagram for the whole fuctioning of the toy robot car......please help

Question by pavan5859   |  last reply


Hey guys, what motor I should get in terms of Voltage and current to drive a tank without any electrical problems. ?

I have an Ardumotor shield and the Arduino UNO. I want to use a motor that wont be too high or too low for the Ardumoto. I also plan on getting a gearbox to increase torque on my tank(like this: http://www.abra-electronics.com/products/70168-Tamiya-Double-Gearbox.html)

Question by vek11   |  last reply


Speed controller for brushless electric bike motor? Answered

I have obtained a 400W 24V 2800RPM Monophase BLDC motor with related power supply and a 24V 40A-rated pulse width modulator unit, however from what i understand the PWM won't give me full control (if any at all) of the actual speed of a BLDC motor. I want my motor's torque to remain relatively intact and for it to cover a range of about 50-300 RPM, with no need for exact control. Are my only choices to build a pulley mechanism or to buy a mechanical gearbox? I'd like to control my motor electronically.

Question by Khalim   |  last reply


Very slow rotation (1rotation/hr) electric motor? Answered

I am  looking to build an electronically controlled time lapse pan device for my camera. I want to be able to rotate the camera for a specifically timed time lapse (e.g 90 degrees every 20 minutes of shooting). My problem is finding an electric motor that is slow enough RPM to create this slow of a motion... Right now I would need a motor capable of going down to about 1 rotation in 6 hours... at the very least 1 rotation/hr.  So, do those motors even exist? Right now I am thinking the best solution would be to have a stepper motor, connected to a gearbox (right now that would be the inside of a kitchen timer, somehow), that would allow a very slow rotation of 1 axis. However, as this is a mobile build, power constraints are really an issue. I would like to be able to shoot for 6 hours max continually, and I dont know if that could be done without a very low power motor.... If I did the stepper motor connected to a gearbox, do you think that would affect the linearity of the time lapses? E.g would the stepping motion of the motor create a choppy vid?  I have looked into the kitchen timer timelapse but have yet to find a timer that can hold up my relatively light Panasonic FZ-100 without locking up...

Question by astroboy907   |  last reply


Auto egg turner motor. What motor do I need for my incubator?

I built an incubator from a redundant wine cooler but the motor wasn't up to the job. I had underestimated the total load and stripped the gears in the gearbox. Can someone tell me in very basic terms what I need to change and where to look for them? Also, the top connection needs to be a ball and socket type affair (not very smooth at the moment). Where do you buy components like that? Thanks. Paul http://www.backyardchickens.com/web/viewblog.php?id=33362

Question by toxo   |  last reply


Is it possible to make a PIR sensor turn a small electric motor?

I need to have a PIR sensor turn a modded servo, but i can't get it to work. The servos electronics have been taken out, so its just a gearbox, and works like a normal motor. I have tried using a transistor as a switch for the servo, it works for an led, but when the motor is put in the leds place it just spins non stop. I have no clue what else to try, or why its acting to erratic. I have also tried just going straight from the PIR sensors output, but no luck there either. Does anybody know how to do this without a micro controller? and could you provide a schematic. Thanks.

Question by adem70   |  last reply


What sensor should i use for my robot? Answered

Right now my robot has a twin motor tamiya gearbox and 2 wheels in back and a servo with 2 wheels hot glued to it in front for steering and an arduino duomilanove for the brain and it works pretty good except there are no sensors so its not really a robot at all! What I want to do now is buy a sensor that will be able to make my robot avoid obstacles and my track my hand or something. I have ben looking at some sonar sensors, ping sensors, and those sharp ir sensors but i don't know what to pick. It would be great if someone could help me out also I am just getting started so something not tooooo hard to use i mean im up to the challenge though.

Question by Tanners   |  last reply


Arduino racecar dashboard help

Hey guys and girls. I'm hoping i can get some help here. We're building a race car as our project and were at the stage of needing a dashboard and the electrics. Now i know there are a lot of different units out there that run on the OBD/ CANBUS system but our car doesn't use it (our motor and gearbox is mid 80s with carbies and such) My problem, I have absolutely no experience in coding or Arduino, i've read multiple books and tutorials but there's still a lot that my brain doesn't understand (i guess there's a difference from copying someones code and writing it yourself) I know exactly how i want the finished unit to look like and what i want but i just cant work out how. What i need *An accurate tacho *Accurate speedo *Oil pressure *Engine Temp This all needs to be in a display form that is easy to read be it either one big LCD, an android tablet or a mixture of LED and LCD displays Any idea where to start with this? Thanks for everything

Topic by jjefferson1 


Which power do i need to run a motor as a generator in the following environment?

I want to generate electricity with a rotating axis at a power of 3 Watt. The mechanical torque (depending on the gearbox) on the input axis varies between 0.73 Nm (@ 250 rpm) and 0.122 Nm (@ 1500 rpm). Currently i am thinking about a synchronous machine, because it yields higher efficiency, but it is very difficult for me to find a synchronous machine fulfilling the mechanical torque regarding the power.  Furthermore i usually just find motors in that size, so i need to turn them around but i have problems understanding the data sheet. For example this motor: Name: ASM 16 Output Power: 3.1 W Input Power: 9.2 VA Rotation velocity: 1000 rpm As this is a motor, but i want to use it as a generator, should i align the output power from the motor with my input power (the 3 W mentioned above, and than as a generator)?  Can you please give me some ideas how o progress from here? 

Question by falko_doering   |  last reply


My Dream Cheeky USB missile launcher stops moving up and down and won't fire the top and right ports! Help please?

 I have a Dream Cheeky® USB Missile Launcher that I just purchased "used" from an Ebay seller. Every once in a while, it will just lock up and stop moving up and down. I tried going into its gearbox to loosen up whatever may be blocking it, and it did help a little, but it will still sometimes just stop.  Also - and this is the more important situation - when I hit the fire button on my computer for it, it will start compressing air to shoot the missile, but when it shoots from the four o' clock position (the dart on the right), it will only puff it a couple of feet, and when it tries to launch the missile from the twelve o' clock position (the dart on the top), it won't shoot at all.  I really need to know pretty quickly, everyone, so please help me out on this as much as you can!   Thanks,    Win Guy

Question by Win Guy 


How to connect a motor to this PCB ??? Answered

Hi ... in this case, I would appreciate your advice when it comes to connect a little bigger motor to this PCB. I know, that the description "bigger motor" wont be sufficient, but that's all what I know :( ... I added a picture of this motor. It's from a RC car ... and as you can see, it has a gear box. I used an adapter to make it run (3V-1A) and the power it gives, is enough for my project. The question/issue I see (with my poor knowledge) ... is to drive this motor from this PCB. This PCB is from a dog bark trainer. It is operated by radio remote control. It was able to make elec. shocks and to vibrate (the small motor). My plan is to operate the gearbox motor CW by pressing the "elec.shock" button on the RC and CCW by pressing the "vibrate" button = (remove the vibra motor, use the connections to drive my motor and do the same, but with opposite wiring by using the elec.shock connections) Questions : 1. do you think, that the microcontroller would survive the AMPs that the motor would consume ??? 2. do you think, that it is the microcontroller that decides, how long is the vibra motor on ??? (it's on for 2 seconds, after pressing the button...my personal opinion is, that yes) Thank you ... in advance :) zholy

Question by zholy   |  last reply