The Chunkin' Challenge -- Haul Out your Trebuchets!

[Starwhip]

I'm getting to the bottom of this darn distance thing. Scoreboard will be redone shortly.

[noorm]

This is gonna be an interesting thread to watch... If possible, with sugar on top, please post video!!!

Or... post craft files and I'll make a short video for you!

I'll try to find the mad scientist in me... but some people seems to have way more imagination than me!

[bakanando]

I think I read in another thread that the mission results are completely whacked. Maybe the 10 unit fuel challenge post.

Very nice challenge by the way.

[Noname117]

Maybe it is distance covered once you switch to it?

[Starwhip]

Okay, everyone. Better nip this in the bud now.

I've decided to wipe the scoreboard. New entry rules are now in effect. Since the f3 debug menu is so inconsistent, it will no longer be used.

Check the "submission guidelines" for the new rules.

Once again, good luck!

[Deutherius]

I believe my first two submissions should still be valid, because both the highest altitude and payload travel distance was shown clearly. But if the proving ground is leveled, then lets start anew.

I liked my first design. But it felt a little... Meh.

Ladies and gentlemen, I present to you the Gauss Driver XXL:

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89* of the biggest engines our engineers could get their hands on. 4** arms full of power to propel your bombs cargo nearly anywhere***.

Landing assistance sold separately. Warranty void if fired.

* only 45 engines pointed forward - the rest is used for counter-thrust so that the launcher doesn't destroy itself

** current version. I believe 8 arms would be possible, albeit a little insane

*** If your PC is good enough to handle 2.8 km long barrel

[Foxster]

Cute.

(Bit o daylight would help

[Deutherius]

Cute.

(Bit o daylight would help

I chose night because I'm too lazy to timewarp because I forgot it's gonna look worse for better visibility of the vessel marker. Yeah, that's it.

I can take some pictures during daytime and/or provide .craft file, if it's necessary.

[rabidninjawombat]

An idea for measuring final distance.

Maybe add a parachute to the standard payload? Which you could stage right before landing? If they payload survives, then you could see the distance to the launch vehicle by just making it your target.

Will resubmit my submissions late with new measurements Had some idea bout now to get more power!

[ghostbuzzer7]

I did a tension based catapult. :3 Seemed to be the easiest competition wise. 150 Tons of pure tension and boom!

[Ens Gijs]

Air Gun - or Kerbal Rail Gun

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by the way guys, "control from here" on your payload before you launch it to get a true measure of distance, etc.

[Mister Dilsby]

Arggghh! Love this challenge, hate that my Minmus Fling-O-Matic can't enter (not stationary). Must...build...rotor!

[Deutherius]

Thanks for putting me up on the leaderboard I just wanted to correct one thing, I shouldn't have the Environmentalist badge (and the accompanying points) - my design could concievably be reloadable, but it's not yet implemented.

[Mister Dilsby]

Getting there... need to switch POV to record the distance, I know...

[Ens Gijs]

Centrifugal attempt

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[noorm]

So... here's my suboptimal submission!!! I've included more data (F3 screen in the video!)

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Edited March 15, 2015 by noorm

[Mister Dilsby]

Re-did mine, with proper switching/F3 this time. 37m! I think noorm is still beating me in centrifugal division, though I am not only reloadable, but 100% electrically driven!

Edited March 16, 2015 by Mister Dilsby

[Tarantulae]

How do you make a rotor in stock?

[Foxster]

How do you make a rotor in stock?

Here's one way that I'm just working on at the moment:

You build it as one piece from the bottom up. The bit from the decoupler up separates when you fire the decoupler and becomes the rotor/axle. The rotor is then supported on the small gear bays.

[Tarantulae]

Every time I try something like that, it seems like the rotor falls out/through the gear bays. Is there a limit on how much they can support?

[Mister Dilsby]

Here's one way that I'm just working on at the moment:

I like that--you're using half the bearings I am, I have separate races for radial and thrust bearings.

Tarantulae, I asked the same question here: http://forum.kerbalspaceprogram.com/threads/113195-Stock-Rotor-Techniques and Azimech gave a great response. I learned a lot by downloading and disassembling his craft.

[Foxster]

Every time I try something like that, it seems like the rotor falls out/through the gear bays. Is there a limit on how much they can support?

Yup and how fast they can be spun too. If you use 8 gears though it can be fairly sturdy.

Here's a craft file of that one if you want to have a try: https://www.dropbox.com/s/g8ktq397wv02ee3/Angle%20axle%201.craft?dl=0 . Still needs a few adjustments to make it run freer but its mostly OK.

- - - Updated - - -

I like that--you're using half the bearings I am, I have separate races for radial and thrust bearings.

Its a new-to-me design, though I bet someone will have gone there before.

One advantage, apart the need for less gears, is that if you make the bottom set a bit tight and the top set a bit loose then when you blow the coupler the rotor pops up a bit and you don't have the risk of drag against the coupler.

[Foxster]

O-10 driven Spinny-Thingy©. About 320m or so. Dunno for sure. Mostly to test a new axle.

[Starwhip]

I did a tension based catapult. :3 Seemed to be the easiest competition wise. 150 Tons of pure tension and boom!

http://i.imgur.com/sLlcoin.png

http://i.imgur.com/zLGCKSr.png

http://i.imgur.com/Q4QTWrA.png

I need screenshots of the payload at apoapsis (Or the f3 debug with Maximum Altitude) and the moment of impact of the payload with the catapult and distance to catapult in view. The f3 window for distance traveled is incorrect.

Air Gun - or Kerbal Rail Gun

http://imgur.com/a/sju0T

by the way guys, "control from here" on your payload before you launch it to get a true measure of distance, etc.

There are no measurements in those screenshots, though they look nice. I need numbers!

Centrifugal attempt

http://imgur.com/a/nt8IK

Great! You'll be up in a moment.

So... here's my suboptimal submission!!! I've included more data (F3 screen in the video!)

http://imgur.com/a/CvVUu

You'll be up too.

O-10 driven Spinny-Thingy©. About 320m or so. Dunno for sure. Mostly to test a new axle.

http://i.imgur.com/f3JbAM6.jpg

http://i.imgur.com/rw8l2tS.png

Looks promising. Suggestion: Tilt it a bit. Like so:

[noorm]

There are two categories with NO submission?

Here's an minimal attempt at gravity and tension!