23-01-2007 07:02

Hunter

Re: pic: 968 - More unfinished parts!

7068 T6 Aluminum.

23-01-2007 09:48

Rafi Ahmed

Re: pic: 968 - More unfinished parts!

I'd say that they are gearshafts. Maybe output shafts.

23-01-2007 10:46

MrForbes

Re: pic: 968 - More unfinished parts!

Unobtanium?

23-01-2007 10:50

Nuttyman54

Re: pic: 968 - More unfinished parts!

no, unobtanium has infinite strength and is massless, and therefore would be 0% the weight of the aluminum. I'm going to say maybe titanium as an offhand guess since i haven't crunched the numbers

23-01-2007 10:56

JaneYoung

Re: pic: 968 - More unfinished parts!

a very heavy snowflake...

What I'm interested in is that the layout of the parts in the photos being presented is very done well. The photos themselves - separately and together would make an intense, dramatic, and beautiful display.

good stuff...

To add: these would also make great jigsaw puzzles and cards.

23-01-2007 10:56

lukevanoort

Re: pic: 968 - More unfinished parts!

I agree. The only thing I can think of that has similar numbers is Grade 9 titanium and that stuff is beastly expensive.

23-01-2007 11:05

Gabe

Re: pic: 968 - More unfinished parts!

A quick look a McMaster-Carr confirms that it has the tensile strength of 7068 and aluminum alloys are also about 1/3 the weight of steel. Anyways, the strength and weight are way off for it to be titanium. They are very, very nice shafts.

23-01-2007 11:08

MattB703

Re: pic: 968 - More unfinished parts!

i think everyone is missing the big clue. There are 16 of these "axles". That is a large number. Just like the large number of "wheels" in the last post.

My prediction;

The Robotic Alliance of West Covina has been expanded to include more teams.

23-01-2007 11:19

lukevanoort

Re: pic: 968 - More unfinished parts!

Keep in mind that 16 also equals 8*2. So, it is fully possible there is only one team in the RAWC and they are building a competition and practice robot both with 8WD versions of the West Coast Drive. (Which would be really awesome if that was the case)

23-01-2007 11:36

Stephen Kowski

Re: pic: 968 - More unfinished parts!

they are explained this....2 teams, 2 robots each, two demo gearboxes, please refer to the previous thread they had on their unfinished parts

23-01-2007 13:19

Kirk

Re: pic: 968 - More unfinished parts!

The material is 7068 T6. It is really not that much more then 7075 but has significantly better strength properties. You just have to use it in high stress locations.

No one has guessed what its for yet.

23-01-2007 13:19

AdamHeard

Re: pic: 968 - More unfinished parts!

The background looks like a sheet of black ABS plastic.

I'm pretty sure they use that for their electronics so that could be why they have it on hand.

It also might be the tables you see in these pictures here.

23-01-2007 13:37

Kirk

Re: pic: 968 - More unfinished parts!

Its not tables and its not ABS but it is a type of plastic and it is going on the robot.

23-01-2007 13:43

AdamHeard

Re: pic: 968 - More unfinished parts!

Black HDPE? PVC?

23-01-2007 14:06

Kirk

Re: pic: 968 - More unfinished parts!

Getting close. Has better strength properties then those.

23-01-2007 14:13

lukevanoort

Re: pic: 968 - More unfinished parts!

Garolite?

23-01-2007 18:11

Cody Carey

Re: pic: 968 - More unfinished parts!

Polycarbonate?

23-01-2007 18:15

Andrew Blair

Re: pic: 968 - More unfinished parts!

It does look most like a clear polycarb on a black background.

23-01-2007 20:31

Rickertsen2

Re: pic: 968 - More unfinished parts!

I really hope those are CNCed. Those would take forever to fabricated manually.

23-01-2007 20:35

Cory

Re: pic: 968 - More unfinished parts!

They are definitely CNC'ed. We were very glad about that, since it meant we wouldnt have to be slaving over our lathe for weeks to make them all

23-01-2007 21:51

Dan Petrovic

Re: pic: 968 - More unfinished parts!

Not to mention titanium against FIRST rules.

Someone mentioned that there are 16 axels there. I only counted 15... Multiple times. 2 6WD robots with a couple of spare axels?

23-01-2007 22:01

FourPenguins

Re: pic: 968 - More unfinished parts!

Is titanium illegal again? I seem to remember it being legal last year. It makes no difference to me anyway, so I haven't checked.

I agree that it's most likely PC in the background, which is available in black.

23-01-2007 22:41

Travis Covington

Re: pic: 968 - More unfinished parts!

This is the closest guess so far. Not an output shaft though.

The black material is not polycarb. Keep guessing. They use the same stuff in a lot of paintball parts.

I was hoping to post up another picture tonight, but I've got to wait for the correct answer! So hurry!

23-01-2007 22:54

GUI

Re: pic: 968 - More unfinished parts!

My guess is that 968 has uncovered the secret to a complete pwnage drive, and it involes many shafts spinning at high speeds to make all of their tubes go on the rack and all three bots on their alliance to levitate.

23-01-2007 23:01

Holtzman

Re: pic: 968 - More unfinished parts!

Gearbox Shafts

1st stage

3 Gears fit on that hex

The outside 2 gears are for high and low gear. The middle gear is driven by a pair of cims.

Am I two for two?

23-01-2007 23:11

Lil' Lavery

Re: pic: 968 - More unfinished parts!

Gearbox shafts
2 spur gears placed on the hex
Dog (or pin) placed in between

23-01-2007 23:19

Travis Covington

Re: pic: 968 - More unfinished parts!

This guy's good! Not quite though... 2 gears fit on the hex. The bulge you see will be the third gear.

I'll post another picture in a few minutes. The next part should be MUCH easier though.

23-01-2007 23:38

David Brinza

Re: pic: 968 - More unfinished parts!

Black plastic = acrylic?

24-01-2007 21:54

Joe Ross

Re: pic: 968 - More unfinished parts!

Titanium was only illegal for 2 years, and has been legal again for several years.