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This instructable will show you how to build a K'nex 1 speed gearbox that will make a motor go faster/slower. This is my first instructable sorry if it is unclear and some of the pictures are blurry.
p.s it is based on a gearbox that I found on Youtube its here if you want to see it.
pp.s Give credit to spoonman192
ppp.s remember to use SANYO eneloop Batterys for the motor.

Step 1: The Base

Firstly build the base.

Step 2: The Gears

Now the tricky part, insert the gears as shown.

Step 3: Strengthening the Gearbox

Now to strengthen the gearbox and the basics of the motor.
Hey gingernutsjonny, check my <a href="https://www.instructables.com/id/Knex-gearbox-2/">gearbox</a>! It has just been posted. It's made for functional purposes and works awesome.<br>
hey i found that using the fast gear for around every one turn its around 15!!!!!!on the other (slow option)so thats like if you ue a 1000rpm drill you be getting 15000!!!!!!!!rpm on the other end imaging that on a roller coaster chain lift!
amazing love it thanks for the instructions!
make a part list please
I built this once and it makes the last part spin really fast. then I hooked up my 1350 rpm drill to it and all the pieces twisted up and I had to throw it away but it was worth it
i tried building this once and it did not work
I know why: you must have accidental confused the yellow rod with the grey rod. I've got a video of a nice big and open gearbox which shows the inner workings. <a rel="nofollow" href="https://www.instructables.com/id/Ultimate-Knex-Gear-box/">https://www.instructables.com/id/Ultimate-Knex-Gear-box/</a> <br/>
The problem with this is that (if it has 3 blue gears) it is pushing the limits of a K'nex engine (except the mains powered one) as more friction is generated and the torque required to get the whole gearbox moving increases dramatically. Because of this I think you'll find that with just 2 blue gears you get similar performance. It's also better for hand cranked stuff like ferris wheels or windmills. I made a gearbox too (check out my account, click my icon) but really big so you can see the inner workings!
zomg i cant believe this. ive not seen this thing for ages im spoonman192 i made this years ago before i made my youtube account omg cool for posting it i remember telliung a guy i would but i forgot so thanks!
i have removed my knex gearbox video now so u cant see it anymore this is spoonman192 btw
if you wnat a good tranny go to <a rel="nofollow" href="http://www.youtube.com/watch?v=TWiB1bOxCHQ">http://www.youtube.com/watch?v=TWiB1bOxCHQ</a><br/>
Haha, that sounds hilarious.
what does
The 'if you want a good tranny' bit.
OHHHHHHHHHHHHH!!!!!!!!!!!!
Viddeo please
Sorry but I'm not doing a video for it.
make a huge one and see how fast it goes with a speedometer :D
<a rel="nofollow" href="http://www.youtube.com/watch?v=X__PrF5zgok&feature=related">some one</a> did that they got 2400rpm.<br/>
tried to make my own, accidently made a 60 second timer :D
seen that before lol, thats insane!!
it wouldn't be ps, pss, psss, it would be ps, pps, ppps, and so on.
thanks I've changed it now.=)<br/>
no problem.
So you have to rebuild the ratios every time you want to shift? Even so, good build. Try adding more complicated ratios.
what do you mean by more complicated ratios?
Very nice! now just make it shift
ill work on it
yeah it's really simple to make a shift-able 2 speed gear box 3 if you count neutral

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