Mid-size, light-weight, sturdy and easy-to-use repeater. I can fire five red rods in a 10-second video. Holds 18.
It fires via weighted impact (typical) and features recoil dampening and minimal-friction loading systems not seen elsewhere. My entrant to any applicable K'nex gun contests.
A few exotic parts were used, firstly a metal spring that fits around a K'nex rod. Also, to make this, you will need to mutilate three dark grey connectors by cutting off their tops (remove half of the circle). Though you could get the spring at any hardware store, you can use rubber bands in its place.
It fires via weighted impact (typical) and features recoil dampening and minimal-friction loading systems not seen elsewhere. My entrant to any applicable K'nex gun contests.
A few exotic parts were used, firstly a metal spring that fits around a K'nex rod. Also, to make this, you will need to mutilate three dark grey connectors by cutting off their tops (remove half of the circle). Though you could get the spring at any hardware store, you can use rubber bands in its place.
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Signing UpStep 1: -back end- The pile driving shaft.
Essentially, you're just building a sturdy hole through which the firing force of the gun passes through. It doesn't have to be exactly like mine, but what is shown optimizes on strengh and keeping out of the rubber bands' way. If you are a diehard fan of the orange connector type blocking trigger like in KILLERK's, go ahead and incorporate one near the bright-red connectors. I prefer pull-release, it's faster.
On the SPRING - it is extremely effective to use one here. You can get springs like these that wrap around K'nex rods at hardware stores (best bet) or from hobby stores (remote control cars) This is how the power is converted.
GREY ROD + ORANGE CONNECTOR -> BLUE ROD -> RED ROD (Projectile)
(Several rubber bands) (spring-loaded)
Let's save adding the grey rod for last.
Because the blue and red rods together still have less total mass than the grey rod hitting them, their velocity will match whatever speed you can get the grey rod to reach, assuming the laws of physics and transferrence of energy. The spring acts as a shock absorber, preventing any extreme stresses on the K'nex parts and returning to optimal position again.
Yours may need to be tuned differently from mine to keep the blue rod in the perfect place, but you'll understand this better once it's complete.
If you don't want to use a spring, rubber bands (fourth picture) are an alternative, although I've so far not had much luck with them. Loss of strengh.
On the SPRING - it is extremely effective to use one here. You can get springs like these that wrap around K'nex rods at hardware stores (best bet) or from hobby stores (remote control cars) This is how the power is converted.
GREY ROD + ORANGE CONNECTOR -> BLUE ROD -> RED ROD (Projectile)
(Several rubber bands) (spring-loaded)
Let's save adding the grey rod for last.
Because the blue and red rods together still have less total mass than the grey rod hitting them, their velocity will match whatever speed you can get the grey rod to reach, assuming the laws of physics and transferrence of energy. The spring acts as a shock absorber, preventing any extreme stresses on the K'nex parts and returning to optimal position again.
Yours may need to be tuned differently from mine to keep the blue rod in the perfect place, but you'll understand this better once it's complete.
If you don't want to use a spring, rubber bands (fourth picture) are an alternative, although I've so far not had much luck with them. Loss of strengh.
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lol, this looks almost like the BFG from Doom! all u need now are some knex demons.....
Also, the word you're looking for does exist, and is properly spelled Pyromania.
soda is just carbonated water with E-numbers and flavourings, so i cant argue. but it still tastes good!
I clicked on your name, and found that you have done this in EIGHT seperate places. This is where we're supposed to be talking about Red Impact - Perfect Duck's K'nex Gun. If you want people to say things about your gun, do not put it everyone's instructables where it doesn't belong!
If it actually had something to do with Red Impact, I wouldn't mind! But you're just sticking it in our faces for attention.
http://www.instructables.com/forum/TRFEAY7FABDYRIU/
<----->Cool(JB)<----->
The red impact works by having the firing pin equal roughly the same mass as what it is hitting, so the remaining energy gets dispersed through the spring. If it's too unbalanced, it will break in exactly the same way as you're describing. Black rods are heavier and carry too much unstoppable force. Use a grey one for the firing pin.
Your rubber bands are probably fine but maybe they're not being used correctly ...
The rubber bands must be resting, barely even tense, when the gun is not being pulled. Do not over-stretch them for the sake of added power. Pulling them back is sufficient. You should be comfortably able to use the full five to six inches of draw-back space in the rear section. Maximum speed is key here, not power, which is why a grey rod, which takes less energy to speed up quicker, is preferred.
The firing pin reaches a speed, and then that speed gets transferred over to the projectile. It strikes, doesn't push.
The orange connector shouldn't be falling off because the rod shouldn't be plowing so deeply into the system. I think using a grey rod will solve all of this.
Another point to make is that after the central blue rod has had its grey connectors ripped accross it, it's easier to happen a second time because a little bit of its blue plastic gets torn away (You can see this if you look closely at the end). As well as replacing the black rod with a grey and adjusting the rubber bands, use a new central blue rod.
this is it shooting fron 50 feet with the camera zoomed
And to Perfect Duck: Thanks for the advice on the exploding pieces. I'll see if I can find somthing with a spring in it..
When i measure springs, I use a drill bit chart. The smallest hole it fis in is the size.
http://www.instructables.com/id/EBAAM5UF3ER7VHU/?ALLSTEPS
and this gun is pretty good too.
The tips of K'nex rods are wider then the middles. When two tips strike each other as one rod slides directly against another, it causes a jolt of lost energy, the entire gun shakes, the rods in the hopper jump around inside, and the one you're trying to shoot out loses a tremoundous amount of velocity. The loading arms prevent this problem (which is significant with longer rods like red ones) by lifting the rods away.
No end collision = clean, efficient shot. Very powerful if you actually use the loading arms. Much better than if you just have the rods scraping against one another.
I'm using a rubberband instead of a spring(don't have one), could that be the problem?