Are there any planes that use both pusher and puller propellers at the same time?

Would look like 1 in the front and 1 in the back.

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


please help make simple timed curtain puller

My idea for a simple curtain puller is to have a motor on a timer, the motor turns on and winds a cord/string that loops around the curtain, pulling it to the side.  The part that I need help on is turning the motor off when the string is sufficiently coiled, so either it would be set for a certain time/number of rotations/ or amount of resistance.

Topic by SethR14 3 years ago  |  last reply 3 years ago


finished!!

I finished it but i need to get some pics. and its still the prototype wich im going to post in a forum not yet an instructable it works like this: the trigger pulls apuller back wich turns like killerks sr-v1 then the puller goes to far back in order to release the ram.(the puller pulls the ram back)

Topic by ryan knexer 11 years ago  |  last reply 10 years ago



How to build an automated motorized curtain puller alarm clock?

I'd like to rig up a system which will automatically pull open the curtains in my bedroom at a preset time in the morning. The curtains open quite nicely by pulling on strings tied to their inside ends, and it'll be easy to run both those strings to a central location where they can be wound around some sort of motorized spool. So, what I need is a simple little motor (needn't be too powerful, I'd think) that can drive such a spool, and then some way to control it based on the time. Something as simple as a light switch timer, though, which merely switches a circuit on or off at a given time, isn't quite enough, because the motor will need to run for, say, 5 seconds to open the curtains and then stop. Ideally, it would be nice if there was a user-friendly interface I could use to set the time of the curtain alarm, and there should also be a way to just press a button to trigger the opening on command. Any thoughts? Thanks very much!

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


Old Fords

Any of you know old fords? 1973 truck 6 cyl inline.  Stick shift.  Currently replacing the ring gear. Right now workin on gettin the flywheel out. Do I need a puller for this? 

Topic by Toga_Dan 6 years ago  |  last reply 6 years ago


Discharging high amounts of amperage in a very short time.

Previously I asked this question, except I wanted to build an electromagnetic dent puller. But no one gave me specific ideas or instruction of how it could be done, instead everyone told me different ways to pull the dent out, or how the metal looks.. Anyway. I have a lot of copper wire. And I have a bunch of magnets and ferrous cores, iron rods.. etc. I am wondering if I can create a very powerful burst of magnetic energy with a few winding's of copper around a ferrous core. I'm talking enough to push two very heavy objects apart, such as a television or couch... 1) Copper will be wound around about 40-60 times 2) High amperage discharge from capacitor bank 3) Possible explosion or melting wire? Thank you... again

Topic by Justdoofus 6 years ago  |  last reply 6 years ago


h a any one know some things about bullets?

Ok so i have a bullet(no powder) with a spent primer in it and cannot seem to get the primer out,im doing this to get the bullet out although ive done it by hammering a nail into a with no primer i cannot get the primer out its a rifle shell rws.308 and is there a easier way to get the bullet out of the shell,i dont have a kinetic bullet puller and cannot be bothered to buy one for a few shells

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


My Gift Exchange

My skills include: Wood work, metal work, digital imaging Paracord stuff and more. Here's a link to my featured Instructable:https://www.instructables.com/id/Paracord-monkey-fist-guide/ What I'd like to make for someone: I'd like to make a giant monkey fist to keep that small garage key you keep loosing and a baby monkey fist for your house keys or zipper puller.. I'd be willing to make s/m size gift package: To be honest I don't know in what size category to list this. I'd be willing to receive a smaller or larger size gift package from someone than the one I make for someone else: Equal size. What I like: wood, metal, electronics, crafts, creative things. What I don't like: Things that don't have any sort of practical use. I absolutely can't have: Cheeseburgers ...LOL.....Anything is cool. Type of  thing I'd love to receive: Something creative and differant. Would you be willing to ship to an address outside your own country? yes Confirm that you are at least 18 years old or, if not, that you have the approval of a parent or guardian: I forget when I was 18....No I am not that ancient.

Topic by NutandBolt 8 years ago  |  last reply 7 years ago


(newsletter) Hydroponics System, Make Beer, 5-Minute Chocolate...

Sign-up for this newsletter: Welcome back! NEW! Art of Sound Contest - Submit any sound or music-related Instructable in our new contest and win some incredible custom hi-fi speakers! Get the LED Out! Contest - Enter any Instructable that involves LEDs, and win some amazing lights from Monkeylectric! Come and meet us at Maker Faire this weekend. We'd love to see you out there! Color Changing Glowing Crystal Ball Small NFT Hydroponics System Soda Can, Saltwater and Charcoal Battery Climb a Tree Using Only Rope! Enter your music or sound-themed Instructables now! Monster Speakers - Art of Sound Contest Floating Dock with Barrels 5-minute Chocolate Balls Cheap and Simple Gear Puller How To Create a Sexy Cat-Eye Look Make Oars from Two-by-Fours Paint an Antique Copper Effect A Swing Set that Generates Electricity Make it glow, and win Monkeylectric lights! Over a dozen uses for plastic drums! Black Straw Snoot Flash Attachment Make a Stained Glass Mosaic Portrait Linoleum Block Printing British Stinging Nettle Beer Sign-up for this newsletter:

Topic by fungus amungus 9 years ago


The New Knex Innovationists Tournament - T.N.K.I.T (Round 1 Results)

The results for the first round of the contest. Good luck to the people who moved on! -Viccie.B1993- 1st: Kairah --- Kairah's K'nex Train V01 --- 770/800 points. 2nd: Jollex --- K'nex Snowmobile --- 640/800 --- points. 3rd: (Atlas) --- Knex Pickup Truck With Suspension --- 620/800 points. 4th: Silentassasin21 --- Willy's Jeep --- 610/800 points. 5th: Knexguy --- FN-SCAR-H --- 600/800 points. 5th: ZakS95 --- K'nex Car --- 600/800 points. 6th: Serial-Cricket --- Horse Drawn Carriage --- 590/800 points. 7th: 222222222539 ---- Every Terrain Tank With Fully Automatic Turret - 580/800 points. 8th: K'nex Mad --- Knex 4WD Truck --- 550/800 points. 9th: DJ Radio --- 4WD Tank - 540/800 points. 10th: Killer~SafeCracker --- K'nex Racer --- 530/800 points. 11th: The Jamalam --- T.N.K.I.T I-Think-Entry --- 510/800 points. 12th: Owen-Mon-82397 --- K'nex Car (TNKIT Entry) --- 490/800 points. 13th: Heat-Seeker --- "Gypsy" Caravan --- 480/800 points. 14th: Cj81499 --- The New K'nex Innovations Tournement Car --- 400/800 points. 15th: AJLeece --- Random Car For TNKIT --- 360/800 points. 16th: Millawi Legend --- K'nex Tunes Puller --- 310/800 points. The people who aren't listed did not move on because they were too late. Link to round 2: https://www.instructables.com/community/The-New-Knex-Innovationists-Tournament-TNKIT-2/

Topic by Skreetsha 9 years ago  |  last reply 9 years ago


The New Knex Innovationists Tournament - T.N.K.I.T (Round 1)

The category is "K'nex Vehicles".Only one thing to remember, 2-16 wheels on your vehicle needed!You can show it in a Forum Topic, a Slideshow, or a Video.The things where your vehicle will be judged on:- Originality- Looks- Added Functions Such As: Suspension, Engine Model, Etc- ReliabilityIf you have made something, post a link here, and i'll judge it as soon as i see it.Enter it before 1 September 2009, or you'll be disqualified.Contestants:- St J - Entry:- Millawi Legend - Entry: https://www.instructables.com/id/Knex-Tunes-Puller/- Kairah - Entry: https://www.instructables.com/community/Kairahs-Knex-Train-V01-TNKIT-Entry/- Shadowninja31 - Entry:- Silentassasin21 - Entry: https://www.instructables.com/id/Knex-willys-jeep/- DarthVader - Has been banned sadly enough, so he can't enter anything.- (Atlas) - Entry:- Jollex - Entry: https://www.instructables.com/id/Knex-Snowmobile-TNKIT-Entry/- ZakS95 - Entry: https://www.instructables.com/community/Knex-Car/- Knexguy - Entry: https://www.instructables.com/community/TKNIT-entry-and-FN-SCAR-H/- 222222222539 - Entry: https://www.instructables.com/id/TKIT-Round-1-Entry-Every-Terrain-Tank-with-Fu/- Killer SafeCracker - Entry: https://www.instructables.com/id/Knex-Racer-TNKIT-Entry/- LordSnipe - Entry:- Owen-mon-82397 - Entry: https://www.instructables.com/community/Knex-Car-TNKIT-Entry/- Cj81499 - Entry: https://www.instructables.com/id/the-new-knex-innovations-tournement/- Dj Radio - Entry: https://www.instructables.com/id/Knex-tank-1/- KillerPanda - Entry:- Heat-Seeker - Entry: https://www.instructables.com/community/knex-gypsy-caravan-TNKIT/- Serial-Cricket - Entry: https://www.instructables.com/community/Knex-Horse-Drawn-Carridge-TNKIT/- Yannyboy - Entry:- Katarukito - Entry:- Ajleece - Entry:- Knex Mad - Entry: https://www.instructables.com/id/KNEX-4WD-TRUCK/- Knexmaster7000 - Entry:- Darth Gecko Man - Entry:- The Jamalam - Entry: https://www.instructables.com/community/TNKIT-I-think-entry/Do your thing, guys!UPDATE:THE RESULTS ARE HERE:https://www.instructables.com/community/The-New-Knex-Innovationists-Tournament-TNKIT-1/

Topic by Skreetsha 9 years ago  |  last reply 9 years ago