K'nex Quad Bike

I found this model on the net but cant find where i found it from. It parts of the quad was quite hard how they fit, we have changed the front end a litle.

Topic by mr-maker 8 years ago  |  last reply 7 years ago

Turnigy 9X not working?

I have a Mode 2 Turnigy 9X transmitter for my quad-copter (3DRobotics APM 2.6) and it worked almost perfectly at first for a $90 controller. After not using it for a while, I tried using my quad-copter and it wouldn't arm (start). I plugged it into my PC to check the transmitter settings in the APM program and the sticks do not work anymore. The left stick does not show movement values at all and the right stick (throttle) does not go to the lowest value (~900) anymore, only to the highest. The left stick is what is used to start the quad, which is why it wouldn't start in the first place. Why would the sticks suddenly stop working? Also, about a week earlier, a screw fell out of the inside of the transmitter (heard it rattling inside). Would this have anything to do with it?

Question by Arya42 4 years ago  |  last reply 4 years ago

Drone not turning on? Answered

I have an Ardupilot 2.6 from 3DRobotics on their quad frame. I am using their power distribution board now instead of using one that I made myself. Before I changed the power board, my drone was working perfectly. Now when I try to arm it (enable the motors) it does not work. The light on the APM 2.6 blinks red when disarmed and is solid red when armed. It only blinks when I try to arm it. I am using a Turnigy 9x transmitter with a turnigy RX. I have tried replacing the RX and it does the same thing. I have a separate battery pack for the receiver because it seemed like it was not getting enough power with the 3DRobotics power board. Could it be a problem with the transmitter?

Question by Arya42 4 years ago  |  last reply 4 years ago

Hommade quad tape deck

I love quad as an audio format. I've been recording in quad a lot recently on my tape multitracker. It uses regular cassette tape, and the regular track widths, but uses all four at once instead of two each way. Trouble is, it only has stereo mixdown, and it records at twice speed, so I would need to modify any potential quad tape deck that I build to play at twice normal speed. I've figured out a way to use a 4-part RCA signal, if ran to two stereo amps, to get quad sound to my speakers. Therefore, I would need to modify my homebrew quad tape deck to have 4-part RCA out. I'm still a little fuzzy on the particulars of that. In order to read all four tracks, I'm considering just taking two stereo heads and putting them next to each other, but due to width constraints, that would probably mean being unable to sync their output, let alone record anything. I suppose I could yank the quad head out of a junk Tascam, but good luck finding a junk Tascam! Any ideas on solving this issue? Perhaps work in an output lag somehow on the forward head's output so that they are synced again? One idea that I have, if I can get the outputs synced, is to just pull the head out of one tape deck and make the wires long enough that I can install it in the other deck, still attached to its own electronics, though. Then there would be four RCA jacks out (two from eah machine) and it would require the minimum amount of hacking things up. Then I'd connect the two cases in to uber case (duct tape, porbably), and go on my merry four-channel way. Anyway, is anybody else a fan of this format, and have you thought about making a quad tape deck? If someone has ever ripped up analog tape decks (or knows the nitty-girtty of how they work), please don't hesitate to give some input to this project!

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

Wind Powered Quad-Cart

I haven't seen anything this on here so I thought I'd step up. Engineers (or anyone who fancies themselves A DIYer) I found a few days back I little some very interesting Wind Powered Rides...six-or-seven-ways-wind-powers-vehicles OK so we know it CAN be done, but can it be done by a DIYer? OK here's my concept, Design and shape are optional but basic components are such: Take a pair of multi-speed Bicycles, their gearing will be the basic propulsion for this vehicle. Take one of the "bikes" and hook up a prop where the pedals "where" and set the wheel output to be higher then the prop speed, this should take care of the foreward movement once going. Now for the initial starting power (Bike 2), this can either be by petal, or by electric (solar/battery- up to you) But the basis for this whole thing is simple energy transfer, if the moving air over the prop causes the drive wheels to go, and by having them geared higher, the vehicle SHOULD move faster the faster you go ..Right? Can I get some math to back this up? it sounds like it would work.

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

mini quad wnt start?

I hav a spark but the spark plug dry so it means there no faul gettin to it but i clean the carb and i dnt no wot els it cud be any ideas

Question by 9 years ago  |  last reply 9 years ago

Bluetooth Arduino quad copter

I making a Bluetooth controlled Arduino quadcopter. I want some help with the code. It is using mpu6050 gy521 breakout board. Please help. I want it to auto level.

Topic by harshitsingh.111001 11 months ago  |  last reply 11 months ago

FPV Quad-copter Build?

I want to build a Quadcopter with some specifications: -GoPro Hero3 Mount -Additional wireless onboard FPV camera -About a 2 mile range -GPS to return to certain location  -30 minute battery life My budget would be around $200-500 Is this build possible? If so, is my budget enough? or is it going to cost more? May anyone help me on the specifications on the hardware (Motors,ESC's, Flight Control, GPS)

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

Quad Copter LED Controller? Answered

I have four different colored flexible LED strips on the bottom of my copter.  Presently, my only option is on or off.  I would like to make them flash or do something different.  On each LED strip there are 9 lights and also resistors.  These are the type of led strips that can be cut if necessary.  I know I could go and buy a micro controller but I'd like to try and make something if it's simple and not to expensive.  The power will come from onboard lipo battery.  Any thoughts or suggestions are greatly appreciated. Thanks in advance, Darrel

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

4 wheeled Quad-Cycle!

Has anybody made or thought about making an Instructable to make a 4 wheeled bike-like a car? I've seen them on the Internet for $3-4000. Thought it would be interesting because of higher gas prices.

Topic by potofgold 11 years ago  |  last reply 4 months ago

Help. How to Get oil out of quad? Answered

Me and my brother were trying to drain the oil and we magically screwed up. Now I cant warm it up so that the oil comes out because theres only half oil left in there. What do I do ?

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

I have a quad comparator, what should i use it for?

Its the LM339, i know a quad comparator compares 4 different voltages, but thats about it. what kind of application could this have? ideas?

Question by zack247 7 years ago  |  last reply 7 years ago

what is a good gear ratio for a 6.5hp quad type of thing?

I want to be able to really accelerate but still go pretty fast like to be able to go faster than 30mph its going to be a 6.5hp engine and on a mix of a go kart and a atv quad so overall weight including person about 250lbs. please help on what the gear ratio should be and im pretty sure it has a 10 tooth or 11 tooth clutch

Question by BIGHAIRYDUDE 8 years ago  |  last reply 8 years ago

How do I revive scratched and worn plastics on my quad-bike? Answered

The plastics on my bike have become quite worn from all the use.  Not just bush scratches and scuffs but also a few deep ones.  What is the best way to make them look good again? I thought about sanding them with a fine grit but I don't know if I can get them to shine when I'm done.

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

Low cost Quad copter communication

I am working on a quad copter but I am also not in a state to buy transmitter and receiver. Please suggest another low cost communication system. I am using Arduino Uno as its flight controller.

Question by harshitsingh.111001 11 months ago

Would a forklift motor be overkill for a (stretched) 49cc quad bike conversion?

I Have a childrens 49cc quad bike that I'm stretching to 6 feet long, and converting into a 'party quad' with a sound sytem and lights (which will be removable). Will a (big) forklift motor running on 12-24v be overkill for it? Or should I 'accquire' the motor and try it out? And if I do get the motor, where would I find a relay/solenoid powerful enough?

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

Arduino control of 4 wheelchair motors?

I want to build an offroad/all terrain mobility vehicle and have simultaneous motor control using an Arduino, raspberry Pi, or similar mini board. I have very limited mobility and want to enjoy the outdoors more. Can this be done? I have 24volt motors, but not sure yet as to the watts.M

Question by poppaIT 1 year ago  |  last reply 1 year ago

how to use quad photodiode from a dvd burner as normal photodiode? Answered

Question by Atul009 5 years ago  |  last reply 5 years ago

How do you solve a quad-cube?

The quad-cube is four 2x2 cubes stuck corner to corner.  I have not been able to find any instructions or algorithms on how to solve one.  Whenever I try to use 2x2 algorithms there is one corner that doesn't match up.  Making an instructable on this would be a great idea too because it's the 30th anniversary of Rubik's cubes.

Question by Scout Jinx 8 years ago  |  last reply 8 years ago

Pro tips for getting rid of last bit of jello? Fine tuning 2 axis basecam gimbal?

I have a quadcopter build up with a simple $60 basecam gimbal, a mobius camera, and I have finally got some better motors, the $60 set of EMAX 2213 brushless motors with standard nylon props. (I am still a noob at flying, esp. FPV. on-screen.) (previously, I have been using those notoriously bad genaric china orange/silver 2212 motors 2 of which even had loose, rattly bearings! I did not even bother attempting to ballence since the aluminum prop holders were bent, and some even had partially stripped threads! They were really needing to be replaced!) The gimbal is CNC aluminum mounted, and has 4 rubber suspensions that are supposed to isolate vibration, but they do not remove jello completly. (getting the new miles better EMAX motors and going the best to ballence the props and hubs definitely helped, but did not remove jello entirely.) https://www.youtube.com/watch?v=hajzljufl2I On every crash, the rubber suspension ball things would pop out, and they did quickly wear out, and one of them ripped right apart, so I bought more. They are the same stiffness, I could not source a large quantity of more flexible ones unfortunately. Not for a decent price, anyway. So other than balancing the props with a simple prop balancer, and changing out the rubber balls, what can I do to get the jello down more?

Question by -max- 4 years ago  |  last reply 4 years ago

how can i update my intra4 quad core tv box to run android 5?

Question by rude51smith 1 year ago  |  last reply 1 year ago

could someone post an instructable on how to make a quad MOT stack?

I looked all over the internet and instructables on how to make a quad Microwave oven transformer stack but all i could find is a schematic  and that is not enough.  there are plenty of instructables on how to make a dual stack but none on a quad also could you show me how to add resonant capacitors

Question by crazy-blender 6 years ago  |  last reply 6 years ago

Knex ATV

My entry for kNeXFreek's challenge. It has suspension for all 4 wheels and I think that it looks awsome.  I WILL DEFINITELY NOT POST It took about an hour to make, tell me what you think

Topic by Fred the Penguin 9 years ago  |  last reply 7 years ago

How to add a op amp to this circuit?

I built this circuit a while ago but the only problem i have with it is that i have to use electronics like my iPod, laptop, or anything with a high volume output. So I started reading about op amps and hwo they "jack up the signal" and I stated wondering could I somehow integrate it into my circuit so that my audio input is higher therefore allowing me to use my cellphone, tablet, and e.t.c? Currently I have a LM324 Quad amp i know fr sure i wont need all those pin. I also have a tip31 and 2N3904 transistors.

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

Can i replace my CPU easily? Answered

If i was going to replace my CPU (from say, a 2.8 Ghz core 2 duo to some sort of quad core) and my motherboard was compatible with both, would i be able to do it? I know how i could physically do it, but would it mess with my bios etc? I'm confused with what to do on the software side of it. Please help.

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

i want to make a small quadcopter an i control the quadcopter using arduino uno ?

Motor i am using is 16500 rpm motor  i want  to know is this motor apt  for quad copter and if arduino uno is apt for quad copter how should programme

Question by paulsantony6 3 years ago  |  last reply 3 years ago

How to tighten locknuts without the bolt being fastened? Answered

So, I'm trying to fasten my trucks to my diy-ed skates now, but one of the three bolts of the first truck is looser in it's hole than the other three. When I try to screw the locknut on, the bolt just turns along, and there's my sole on the other end. First mounting the trucks to the baseplate and then mounting the baseplate to the boot is not an option, as there's bolts fastening the plate under the trucks.

Question by cephalopoid 8 years ago  |  last reply 8 years ago

Raspberry pi 2 processing capability?

Hearing the announcement of the new latest and greatest Raspberry Pi 2, now a backwards compatible computer with a 0.9GHz ARM Cortex-A7 quad core processor and 1GB of LPDDR2 SDRAM, I was wondering of the feasibility of using it as a very cheap and basic solution for a simple computer for my lab. Currently, I am using a compaq presario C700 Pentium Dual-Core laptop, that has been maxed out with 2GB 800MHz kingston RAM, and is running Kubuntu. I should also not the HDD has been replaced with a 120GB one from an old and broken Xbox. I do not like it much anymore, because although the performance of it is acceptable, the screen is a bit low res, at 1280x800, it's pretty dark (or at least until it 'warms up' to full brightness), it had a major scratch on the screen, (no idea how it got there) and after buffing it out with many methods, including with an eraser, the area has became discolored, like a portion of the screen has higher gamut and brightness, and lower black levels. :( Oh well. The main killer for it is that it's form factor. It is too big, heavy, the screen is too small, and it is very cumbersome to use far away in the corner of my workbench. Of course being a laptop, the 'base' of it is fixed to the screen, and to move it closer to me takes away lots of valuable space on my really messy bench. I mostly use it to research part numbers, get schematics off of google, watch YT videos, log data from serial ports (including my UNI-T multimeter with basic data-logging capabilities), and stuff like that. I may have as many as 20 tabs open at a time, which did tax my old compaq C700 when it had 1GB of RAM, but that was likely due to a memory leak issue with chrome, since I have the SAME issue with my main desktop, with 8GB of DDR3 RAM. If the video by MAKE is anything to judge, it looks just as powerful, as this embedded video is large! https://www.youtube.com/watch?v=pZz8MW3DSqA My hope is to replace it with a raspberry pi, and be able to use it for these basic operations w/ a old cheap LCD monitor which can be picked up off of craigslist for cheap. Generally old 4:3 monitors go for next to nothing. Maybe I can even find one in the dump :P. Maybe I can configure the GPIO pins to be COM ports, w/ clock and everything else! That way an external FTDI chip and using the limited number of USBs is not an issue. Is that possible?

Question by -max- 4 years ago  |  last reply 4 years ago

Which CPU is faster? Answered

A 3.6Ghz Dual core, or a 2.8Ghz Quad core?

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

Video: DIY Aerial Drone Beer Delivery

The world can be a harsh place, and believe it or not, there are some people out there who are more than 5 minutes away from their nearest beer! As scientists we have devoted our lives to making the world a better place, which is why we've set ourselves the challenge of building a system capable of enhancing the lives of thirsty individuals across the globe by bringing beer within their grasp! After endless minutes of researching debating the coolest way to do this, we settled on building and flying a drone to deliver the amber nectar. http://youtu.be/oHIv1sXrlf0

Topic by dalbyman 4 years ago

is it possible to boost my wimax speed with a bi-quad antenna

Is it possible to "hack" my wimax modem so I can boost the speed with a bi-quad antenna or through some other means? Here's the wimax modem type http://imgur.com/vrsoHqW and here's the modem opened. [img]http://i.imgur.com/JlDAezf.jpg[/img]

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

Will this processor be able to handle good games?

I'm looking at an AMD Athlon II X4 645 Quad Core Processor and I just wanted to know if this will be able to play games like Portal 2, or Black Ops without lagging.

Question by Ke-Bob 8 years ago  |  last reply 7 years ago

can the IC in this circuit be replace with the normal Quad 2 input Nand gate

I want  to make a inductance meter circuit but i cant access the I.C in the schematic because the electronics store near me that sells NTE parts, dont have it. I was wondering how much different will the circuit operate if i use a quad 2 input nand gate.  www.armory.com/~rstevew/Public/TestEquip/IndMeterAdapter.htm

Question by josh1001 9 years ago  |  last reply 9 years ago

what is...........?

Im stuck on what to get should I buy/make a gokart or should I buy a quad bike what will be more fun!!??

Question by rhys25690811234 6 years ago  |  last reply 6 years ago

Why my quadcopter is oscillating and crashing after taking off?

Hi guys, I am new to this multirotor domain. We are strugling with our first F450 quad. Below are the specs: 1. F450 quadcopter chassis 2. KK2.1 Flight controller. 3. FLYSKY CT6B --- 6 channel radio transmitter 4. 1400 KV Brushless motor 5. 30 amps ESC 6. Lipo battery Firstly the quad was not taking off properly. More over, after activating self level mode also, the quad is not at all stable. If we max up the throttle, then it flips in one side and crashes. Otherwise, it takes off from the ground upto 1-2 feet if we slowly increase the throttle and then oscillates and to avoid crash, we then decrease the throttle. Please see the video HERE for more reference. Please guys, really need your help in this matter. We are not able to understand exactly what is wrong with our quad. We have already calibrated our ESC's and the Accelarometer but no luck. Please help guys.

Question by RohitR66 2 years ago  |  last reply 2 years ago

How do I solder wire leads to a 12v 2amp battery?

I am trying to repair my son's electric quad.  I thought it might be the batteries but the batteries are both reading 12v.  I had to cut wire leads that were soldered to the battery so that I can test the batteries.  Now, that I know it is not the batteries, I have to solder back the wire leads to the batteries.  I was soldering the wire to the negative post and I was doing fine, however, I must have touched the positive post and I got a small explosion.  It scared me so I stopped. The quad uses two 12v 2amp batteries that are wired together.  The wires then have a lead that plugs into the quad.  I need to wire the batteries back together.

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

I built a Super (ly fast) Computer, we named it HAL.

I am glad to announce, we have built a super computer. I'm serious, 8gb DDR2 ram, AMD Phenom 9600 Quad Core,500gb SATA hard drive, Dual ATI Radeon 4670 DDR3 512mb Graphics cards, Asus M3N78-VM AM2+ Motherboard. It's so fast, if i was chatting on yahoo, i can see what you are typing before you type it. If ANYONE takes this picture, i will know because the chances of someone with this same set up is pretty slim. Or at least give me credit and let me know.http://www.computersonics.com/Pictures, Well, now!

Topic by Yerboogieman 10 years ago  |  last reply 9 years ago



Question by RAGHUL NM 4 years ago  |  last reply 4 years ago

Why is my PC slow (3GHz Quad Core SiS 66FX)? Answered

Hey, I'm just fixing up my PC that we got from our old computer guy and I found that it's speed is terrible. There is not many programs on it, I've cleared it from ad ware and have Microsoft Security Essentials on it with Avast Anti Virus. It was hand built I believe by him (That could be a reason) and I mostly assume it is the graphics card. It runs Windows XP 2002 and has no software adjustments on it. Though I would prefer Windows 7 Im fine with XP. Anyhow, here are it's specs: Microsoft Windows XP Home Edition Version 2002 Service Pack 3 Intel (R) Pentium(R) CPU 3.00GHz 3.15GHz, 992 MB of RAM (About 1488MB of Initial Virtual RAM but 2976MB of Maximum Virtual RAM) A SiS 661FX Display adapter Plug and play monitor (Square not widescreen) When  I open up Processors in Device Manager, it shows to items called Intel(R) Pentium(R) 4 CPU 3.00GHz Those I think are the mainly important details you should know about. Please reply if you have a suggestion (Also, on games like Roblox I get about 5FPS lol, my main pc gets about 60FPS)

Question by knexpert1700 5 years ago  |  last reply 5 years ago

new stuff

I will post pics soon. but im posting a maching gun (rbg,fullauto) and a mp6 (mods to the mp5 gearmassalt rifle) and how to make the real quad blaster bullets.

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

would like to ride a bike/trike/quad that hold 500+ pounds. Can i make or reinforce a preexsiting bike to work for me?

I want to take and preexsisting bike/ trike/quad and make it hold me. most modern bike have a 200 to 250 limit I weight in around 500+ pounds. I know this is bad and want to change, I loved biking as a child and thought I could buy one. Well I can but it would involve a small loan the cheapest ones are 1300+ dollars I was hoping for some ideas on making or improving plus keeping the cost lower.

Question by darthmanx 10 years ago  |  last reply 8 years ago

What is the best 2 CPUs motherboard for Intel i7 Quad processor with over 8GB of RAM? What is the best OS? Answered

I would like the motherboard to be less then $1,000.

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

how do you wire 2 outlets togeter?

Just how do you wire 2 outlets together. i am trying to make 2 quad boxes for my Christmas lights

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

I play minecraft and im thinking on buying a new computer is 16gb of ram good enough(keep in mind i use skype too)? Answered

I am wondering if a 16gb ram DDR3 Quad core computer if good enough for playing minecraft, skyping, and possible recording at the same time. This is what I am looking at: http://www.ebay.com/itm/AMD-FX-4300-16GB-DDR3-2TB-QUAD-CORE-CUSTOM-DESKTOP-SYSTEM-PC-/400678180859?pt=Desktop_PCs&hash;=item5d4a47d7fb   OH AND WHEN IT SAYS 16gb do they mean ram ( thats what im thinking)

Question by kevincity228 5 years ago  |  last reply 5 years ago

What can I drive or ride on a cat A licence

Hi I have a full bike licence and i was wondering what i can drive or ride? Can i ride a quad bike ? cheers Darren

Topic by dazzer730 8 years ago  |  last reply 8 years ago

How can I reduce 3A down to 1A? Answered

I am finishing up my quadcopter build, but forgot to buy an UBEC. My ESCs are OPTO, a fact I unfortunately did not realize until I had bought them. So, I am attempting to design my own circuit to reduce the 11V 3A battery I have down to 5V 1A for my receiver and flight controller board. So my question is this: can I use a simple 5V regulator to reduce the voltage and amperage? Or will 3 amps going into the circuit fry the regulator? I read that putting 2 regulators in parallel will increase current; however, I believe that is only for the output of current from the regulator(s). Any and all help is appreciated!! Thanks in advance!

Question by Adum24 4 years ago  |  last reply 4 years ago

Computer Help

I am thinking about upgrading my amd processor from a dual-core 2.0GHz to a quad core processor and i was wondering if the AM2 socket that i already have will work with a AM2+ that the processor has.P.S. also, if there are any better deals that you know please comment

Topic by Caveman477 10 years ago


I am thinking about upgrading my amd processor from a dual-core 2.0GHz to a quad-core 2.3 GHz processor and i was wondering if the AM2 socket that i already have will work with a AM2+ that the processor has.P.S. also, if there are any better deals that you know please comment

Topic by Caveman477 10 years ago