Ratio of gearbox Answered

Dear  All Please help me to know : Between 2 type model gearbox reduction ratio  by worm gear and other by spur gear ( please see photo ).  If gear ratio and motor power is same  equal  what kind of type gearbox  for more power torque  .Many thank you in advance for your time.

Question by lam 2 years ago  |  last reply 2 years ago


Gearbox for AC motor

Hello I was wondering what type of gearbox is used in an AC motor powered treadmill?  Also do you need more to regulate the speed?

Topic by henry88 7 years ago


I need a gearbox

Hello all; I figure if anybody could help me with this, it would be here. I need a simple gearbox to connect a 8hp horizontal shaft gas engine to a propeller shaft, for installation in an 18ft crabbing skiff. I dont think I need any step down or up gears, just forward, neutral and reverse. Again, simplicity is the key. Any lawn tractor or riding mower I have looked at typically have the geabox/trans incorporated into the rear axle, and I don't want all those belts running around my bare feet. Any body got any ideas? Thanks- NHSHARPIE57@YAHOO.com

Topic by nhsharpie57 8 years ago


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 9 years ago  |  last reply 6 years ago


Gearbox Sharpener for knex

NOTE THIS IS A MODIFIED VERSION OF THE ONE I MADE LOOKING AT THE VIDEO ON YOUTUBE! IT WAS INTENDED AS A GEAR BOX BUT I ALSO TURNED IT INTO A SHARPENER AND A CHAIN SAW!!! It is hand cranked so... yeahThis is a knex sharpener tool that uses gear ratios to spin the rod at high speeds faster then a large yellow gear to small blue or grey gear ratio which is a 1/5 rotation ratio, for this gearbox though you achieve a magnificent 1/32 rotation ratio. One spin of the cog or yellow gear or starting gear whatever = end rotationWhen spinning at high speeds use a knife or sand paper to refine the sharpness of your rod to a dangerous needle if needed, or you just want to clean up a bad cut job from a pencil sharpener or knife cutter? This gearbox will smoothen out our refine your knex rod... NOTE THIS CAN SHARPEN THE ROD SO SHARP THAT IT IS DEADLY... NEVER EVER FIRE THIS ROD EVER TRUST ME NEVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER EVER SHOOT THE SHARPENED ROD AT YOURSELF OR SOMEONE OR ON AN UNRELIABLE KNEX GUN OR A STUPID KNEX GUN ETC THIS THING CAN MAKE YOUR RODS DEADLY TRUST ME IT HAPPENED TO ME BEFORE!!Anyway enjoy!

Topic by mrbox 10 years ago  |  last reply 8 years ago


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 10 years ago  |  last reply 8 years ago


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 5 years ago  |  last reply 5 years ago


How do i buld a multi speed k'nex gearbox? Can any one give me a page with instructions?

I am trying to buld a muulti speed k'nex gearbox with a shifter can someone help?

Question by David97 8 years ago  |  last reply 7 years ago


knex engine?

Hi everybody im still new and don't know anything about knex but i loved the idea of making engines is there any special kits to innovate new engines and make something new , is there any calculations?? can anybody help me by giving me information websies abou knex for beginners especially for engines. can a knex engine work with compressed air or just with attaching the drive train with an electric motor is it easy to make and is it good idea for prototyping you ideas?? thanks i know that i asked too much questions (im still beginner) and i know that the instuctables knex PROS will be helpful with me PS ,can anybody tell me where can i get a good price buy for a knex kit that contain everything for my infinity innovation

Question by vwtm2006 6 years ago  |  last reply 6 years ago


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 9 years ago  |  last reply 9 years ago


Idea: motorized cocktail shaker (for a real Ramos Gin Fizz)

There are a couple of motorized martini shakers on the market, but neither of them shake hard enough. I'd like to make one that would simulate the actual motion of a good bar tender. The traditional way to make a Ramos Gin Fizz requires shaking it for 12 minutes. I don't have that kind of endurance. For a martini, I'd like the machine to shake hard enough to chip the ice and leave frost floating in the drink. 1. I'm wondering if an electric drill would be capable of driving this thing with modifying the gearbox. I have no experience creating or modifying gearboxes and would like to avoid that if possible. 2. Anyone out there have (or want to make) a good video of a bartender shaking the hell out of a cocktail? (There is a difference between a casual and an agressive shake.) It needs to be from a perspective perpendicular to the plane of motion. This will allow me to trace the path and recreate it in CAD software. 3. The most exciting thing about this is designing the elliptical mechanism that would produce the realistic shake. I've never done animation in SketchUp. Can it handle gears and levers? Is there something else that you recommend? (no windows software please) I'd love any suggestions you have on any part of this.

Topic by RichardBronosky 7 years ago  |  last reply 7 years ago


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 7 years ago  |  last reply 7 years ago


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 6 years ago  |  last reply 6 years ago


i need help finding a suitable gearbox and clutch!

I am trying to make a somewhat small steam engine car or tank and i need to find a gearbox(preferably one i can fit a 5/16 shaft into) that i would like to have metal gears but it doesnt have to be. also the steam engine is low rpm(around 100 rpm) ive looked all over the internet and all i could find are ones for small electric motors with high rpm. the cluthc isnt nescesary but it would be nice. if you have any plans or anything helpfull i would greatly apreciate it.

Question by myakka 7 years ago  |  last reply 7 years ago


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 8 years ago  |  last reply 8 years ago


Making an Arduino-based robot with motor controller shield - what's the best battery(s) to use? Answered

I have this robot I'm trying to make, but can't seem to solve one problem.  I have an Arduino Uno clone with a Rugged Circuits Motor Driver shield, hooked up to a Tamiya Dual Motor Gearbox with the two motors it came with.   The Motor Driver requires at least 8V to operate, but the motors are designed for 4-5V.  (I'm not sure if having two such motors together means you need 8-10V, but I assume not) .  I figure I can use the PWM of the outputs to only run the motors at 25%, to keep them from harm(?) I tried at first using a 9V battery to supply it, but the current was way too low.  I figure I can either use 6 AA batteries in series, or get a ~9.6V rechargeable RC car type battery.  The Arduino is powered by a separate 9V battery. It's a simple setup so I'll just describe it here; -[battery] goes into the 8-30V input on the motor controller.    -two sets of +/- wires go from the motor controller's 'Motor A' slot to the left motor and 'Motor B' to the right motor, separately -the motors are hooked up to 58:1 gearboxes and turn 5cm rubber wheels, for differential drive. Seems like I might have chosen the wrong motor controller shield for the motors, but if I can make it work somehow, then I will. Any suggestions?

Question by stupidloginthing 7 years ago  |  last reply 7 years ago


do you have to fill gearbox with seperate oil to the engine oil and how on a mitsubishi carisma manual?

Do you have to fill gearbox with seperate oil to the engine oil and how on a mitsubishi carisma manual

Question by 9 years ago  |  last reply 9 years ago


DC motors w/o gearbox for a robot? Answered

Hi, I'm building a very small robot that uses (obviously) very small DC motors. There's no space for a gearbox to slow down the speed so I was thinking if is it possible to attach the wheels directly to the motors and then controlling them using PWM. What do you think? Has someone already tried this?

Question by giacky98 5 years ago  |  last reply 5 years ago


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 8 years ago  |  last reply 6 years ago


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 3 years ago  |  last reply 3 years ago


Small RC Car drive system help?

I have been looking online all day and i haven't found anything.  I am looking to turn a iPod touch case into a small rc car using a canabalized rc toy that I got from a friend.  I am using it for mainly its transmitter/receiver and motor controller.  All would be well and good but one gear in on of the gearboxes is shot.  I have many other hobby motors and two that are the same that I want to use instead but I don't know if I can without putting a gear box on them first or if I can, like I want, attach the axle right to the motor spindle with a jery rigged shaft collar.  Just for reference I DO know about building things like this I am on my schools robotics team which I founded but in vex not only are the hookups male instead of female the motors are like servos and they have built in gearboxes (they come as a module).  Any ideas or advice would be greatly appreciated and if I could get help asap I would love it. Thanks in advance.

Question by ahleagle 6 years ago  |  last reply 6 years ago


FS: BIG electric motors

've got three 36v forklift steering motors. They're big, beefy, and used. Rated as 1 1/3 HP "special" duty. They draw 4.1A no load at 36v. With the gearbox, they draw 4.3A no load. Speed for the motor alone 3225RPM , with the gearbox is 75RPM. Torque must be something outrageous. They have an optional mating 43:1 Sumitomo-made gearbox which I reckon would make these some great drive motors for a large heavy project. Without gearbox, they would be excellent for go-karts, suicidal ebikes, etc. I even know of a e-car project that used a similar motor. (forkenswift) The motors alone weigh about 18lbs. Not sure what they weigh with the gearbox. You want one. I have three. I'm asking $100 each for the whole motor/gearbox shebang. Pictures:http://www.majhost.com/gallery/Ned/misc/big_motor1.jpghttp://www.majhost.com/gallery/Ned/misc/big_motor2.jpghttp://www.majhost.com/gallery/Ned/misc/big_motor3.jpghttp://www.majhost.com/gallery/Ned/misc/big_motor_4.jpghttp://www.majhost.com/gallery/Ned/misc/big_motor_5.jpghttp://www.majhost.com/gallery/Ned/misc/big_motor6.jpg

Topic by nedfunnell 10 years ago  |  last reply 10 years ago


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 6 years ago  |  last reply 6 years ago


What should I be oiling my rc car gear box with? Answered

I hear alot of people saying that grease is not the way to go because it will slow youre rc car down and that they reccomend oil but what oil should I be useing.

Question by coolpizzadude 9 years ago  |  last reply 8 years ago


Motor assisted pedal powered rail rider

I am trying to build a 2 person human powered Vehicle that is also motor assisted, I need a way 2 people can pedal at diffrent speeds and drive the same axle. What I think I need is some sort of differential gearbox. What Ii need to know is: Is there is a differential that can take 2 different input speeds and have one output? If it did and I also pushed it with a motor would the wheels spinning feed back though the gearbox and send the pedals spinning like crazy? Any help or advice people can offer would be great.

Topic by BillP55 1 year ago  |  last reply 1 year ago


toy rc car steering mod

I just got a sorta good used R/C toy car for $2, pretty nice for $2, and it works too full suspension, differential drive, two speed gearbox, and the steering mechanism uses a servo but this servo has all of it's control electronics out side the gearbox and on the single PCB the car uses. I just want to hack it so that I can turn it into a 2.4ghz (freebie RF modules from cypress yay) controlled "hobby grade" car with variable speed and such this gearbox has 7 wires sticking out of it, 2 are to power the motor itself, another 2 is 6v+ and ground ( - ), the last three is a potentiometer in the mega ohms range, higher than 20 mega ohms for sure, because it goes out of my multimeter's range if it's at neutral, but goes to about 10 mega ohms when the wheels are turned now, my datasheet for my PICmicro says in the A/D converter section "The maximum recommended impedance for analog sources is 2.5 kΩ" I can't really replace the potentiometer inside the gearbox, there is room for me to fit in my own, what would you do? *add parallel resistors to the potentiometer (probably easiest) *I can have a piece of paper shaded from light to dark and have a photo resistor tell me the darkness of the paper (might get jerky) *I can probably directly attach a potentiometer outside the gearbox directly in line with the output shaft (durability issues) *or I can put a gear on the shaft and have a potentiometer above the gearbox (I would need to cut my chassis to fit it) what sounds good?

Topic by frank26080115 11 years ago  |  last reply 9 years ago



How do you build a gear box for a motor to make a small car?

The gear box has to be made - no prefab gearboxes.

Question by jsheaney 10 years ago  |  last reply 10 years ago


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 7 years ago  |  last reply 7 years ago


AEG (SRC M16A3) NOT FIRING! HELP!?

Today I was shooting some targets with my SRC M16A3. All of a sudden, during a full auto burst, the gun stopped firing. Now, whenever I pull the trigger, I here this terrible whirring sound like a power drill, and the gun does not fire. I check the battery. Then, I tried to adjust the motor height, and that didn't do anything. I removed the motor from the grip to see if anything was wrong with it, and it is totally intact. Can somebody please explain to me how this problem can be fixed with minimal internal gearbox work? Because it is a sportline type gun, I don't feel that overhauling the gearbox with reinforced components would be worth the money or labor. I have a bad feeling that the bevel gear or piston may be stripped, and don't want to deal with the hassle of replacing, shimming, and re-lubricating all of the gears.

Question by fearmonger12 7 years ago  |  last reply 7 years ago


Torque loss in Drill

Hi, I am having some trouble with torque loss from a drill motor and gearbox I harvested for a project. I followed the steps in this instructable (https://www.instructables.com/id/Hacking-Drills-CheapPowerful-GearboxMotors-for-/) to get the motor and gearbox. I then hooked it up to a motorshield and an arduino. Originally the drill (Rigid 18v Cordless) States that it can deliver close to 500 lb-in of torque. However when I hook it up to my apparatus I am able to stop the spinning with my hand.  I use PWM to control the speed but upping the speed still does not produce the required torque. If anyone has any ideas as to why it dropped in torque I would be very appreciative. Thank you in advanced.

Topic by Alipha 3 years ago  |  last reply 1 year ago


Drill Torque Loss

Hi, I am having some trouble with torque loss from a drill motor and gearbox I harvested for a project. I followed the steps in this instructable (https://www.instructables.com/id/Hacking-Drills-CheapPowerful-GearboxMotors-for-/) to get the motor and gearbox. I then hooked it up to a motorshield and an arduino. Originally the drill (Rigid 18v Cordless) States that it can deliver close to 500 lb-in of torque. However when I hook it up to my apparatus I am able to stop the spinning with my hand. I use PWM to control the speed but upping the speed still does not produce the required torque. If anyone has any ideas as to why it dropped in torque I would be very appreciative. Thank you in advanced.

Topic by Alipha 3 years ago  |  last reply 3 years ago


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 9 years ago  |  last reply 6 years ago


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 1 year ago  |  last reply 1 year ago


Can I use a R/C controller meant for servos to control a regular motor? Answered

I am building a R/C tank and I need a controller. I have found a few but they only control servos. I am using a double gearbox to move and steer the tank.

Question by tomtortoise 9 years ago  |  last reply 9 years ago


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 4 years ago  |  last reply 4 years ago


Need your advice for airsoft build.

Hello you all, Not new from visiting, but anyway, I have these parts, etc, that I am hoping someone is able to tell me a way, or how I can use them, to build an aeg, or something of the like _ a few motors with a gear on them. Some plastic gears. Airbrush thing from testors, and propellant can, the remains, everything but the gearbox, one of the gears. the remains of a umarex, sig 5522 commando including the plastic outside, mag, and all, just the gearbox is totaled, and so is one of the gears, and the one of the soddered on cable joints to the motor has come off again.  plenty of large and small springs. maybe some wood if any, paperclips. With the stuff, or some mentioned, Can anyone tell me how I can make a mechanism, or something so the sig can shoot again. ;D would greatly appreciate help. Crews

Topic by ccrews 7 years ago


Gears???

Hello! Convolution is almost done being taken apart, and I will be sorting it and counting it this weekend. Meanwhile, I've started on a new project. As of now, I only have a compact gearbox. I won't say what it does or how it works just yet, to make things interesting... :P For those of you who know, please do not spoil anything. Expect a full update around Christmas.

Topic by koolcoasterkid 4 years ago  |  last reply 3 years ago


knex gear box?

hey everyone i need help on my current procect it is very large and a part the swings around and if i turn off the moter it clicks alot and sometimes breaks so i need a gearbox that has a nuteral (where it can spin on its own) and a 1st gear and 1st gear needs to be slow.

Question by knexsuperbuilderfreak 8 years ago  |  last reply 7 years ago


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 9 years ago  |  last reply 1 year ago


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 2 years ago  |  last reply 2 years ago


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 9 years ago  |  last reply 9 years ago


Making a go-kart

Hi, I am going to make a go-kart in my holidays. I am going to do it using the body and wheels from an old three-wheller buggy. I'm planning to have a search around scrapyards for a smallish engine. Whats the best way to get the power to the wheels? Is there a gearbox on all engines? I think I will use some disc brakes off an old bicycle or motor bike if I can find one. thanks glynlowen

Topic by glynlowen 11 years ago  |  last reply 9 years ago


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 6 years ago  |  last reply 6 years ago


How to make HIGH Speed knex cars

An hour ago I had an idea to speed up a knex motor, or really make a new one, I tested it, and it worked, but it was not good enough. So I upgraded it. It was originally attaching ann electric screw driver to a piece of knex, then making a gearbox to attach it into 2 sideways ones like on the motor. But it was not good enough! I used an electric drill! Use tape to keep it turned on. Magic!

Topic by Bartboy 10 years ago  |  last reply 8 years ago


power tool brushless motor

I want to replace the motor in my dremel for a brushless one and i just need some help in deciding which one to get. I also want to possibly upgrade the motor in my drill. The drill is only used for wood and i don't mind if either the drill or the dremel needs some kind of gearbox to get the most power from it. It would also be nice to know something about larger brushless motors as there doesn't seem to be much about them on the internet. Thanks in advance.

Question by monty324 6 years ago  |  last reply 6 years ago


How do I know how fast of a spring my airsoft A.E.G can handle? Answered

I have a JG MP5K A.E.G that I want to upgrade. It has a high torque motor and it has an 8.4 volt 1600 mah battery. I am looking for an M110- M120 spring. And if I upgrade the spring will there be any other parts that I have to upgrade? I dont know what spring it has right now. I am pretty sure it has a version 3 gearbox but it might be version 2.

Question by airsofter1 9 years ago  |  last reply 8 years ago


Spare parts overpricing - anyone familiar with the concept?

I recently had the joy of getting one of the machines I use at work fixed. We already knew a valve was no longer working but I did not expect the source to be a motor with a gearbox on it. I kept the faulty part to check the internals - just out of curiosity. Now mind you that after little online I sear I found all the components of this drive: 1. A Mabuchi RS-555 motor - priced at under $10 2. A 3 stage planetary gearbox with a sproket for a chain drive - all up and in top quality around $250 with much cheaper options available... 3. A mounting plate - just an aluminium square with 4 holes in it. 4. A standard connector plug with 6cm of cable. Even if I consider that there are only 2 manufacturers for this sort of machinery wordwide I fail to see how a price of very close to $1000 is justified for this part. But let's not brag about politics but design instead: The gearbox is totally over-engeneered for the task and could deliver about 15 times the torque required to moved the valve even if it would be blocked. And against the technicians assurance the drive failed because of us forcing it to be used to often (ROFL) I had to realise the culprit is the design and way it is put together. Despite being all hardened steel there was basically no grease left inside the gearbox, I was not even able to turn it from the motor side by hand! As it is a fully sealed unit I highly doubt the grease just disappeared because most of the metal parts were bone dry, the rest only had a smidge of grease hard like wax left on it. And although the motor has a similar laser engraving than a real Mabuchi motor of the same type it has no ball bearings and judging by the free space bushes of only 4mm lenght, maybe less. One broke off, the other still had about 2.5mm left. I could argue the dry gearbox caused a constant overload of the motor, which is evident by the thermal marks on the rotor but I never had a motor with te brushes broken off the metal clip holding them. The next day I reported my findings to the boss and he said he might have another one somewhere from a previous repair and wanted me to check it as well. Needless to say the faul was identical. This system is being replaced on average every 18 months at a total cost of close to $1500. One third of this is for labour, other spares and general service but the amount for the motor drive is always a sting. Now to really funny part: After my boss had a long and frustrating phone call with our service company it turns out we not allowed to use any parts other then what the manufacturer supplies. Ok, truth told, we are of course allowed to do so but if the service company notices non-genuine parts they have to report it and this automatically cancels our service agreement with the manufacturer. Only one company produces the stuff, only one company in the country has the service contract with them - you see the circle? LOL I found a supplier that could offer a similar motor drive that would only require the original mounting plate and sproket. Priced at just $300 and with a 2 year warranty it sounds tempting especially if you consider that is only for the gearbox and the motor has 3 years. Of cours we won't do it and have to suck it up, so just for laughs a few other spares for this machine that I found in old bills and their price on Ebay for the same part or one of better quality on the right: Various microswitches:                                  25 - 88                       0.20 - 4 Temperatur sensor:                                              129                       1.20 Temp sensor with 30cm heat proof cable:       149                       3.50 Stainless steel sheet metal screw:                        6.50                 0.40 if ordered more than 10 Main switch (simple flip):                                        99                      1.20 Stainless steel screening fliter:                             114                      8.30 And that is just for the mechanical and electrical stuff, if I would go into the plumbing with little stainless steel parts and ruber seals some here might end up with sore muskles from all the laughing... Do have similar equippment that could be serviced better for a fraction of the cost but can't because of similar restrictions? Mind you that I am not talking about warranty stuff here as the machine is far over this already... If someone wants to see how much damage a broken off peice of carbon will cause in the long run let me know. But be aware that I already cleaned away most of the black dust before you complain it looks too clean - I did not want that stuff everwhere ;)

Topic by Downunder35m 2 years ago  |  last reply 2 years ago


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 4 years ago  |  last reply 4 years ago


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 6 years ago  |  last reply 5 years ago