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-   -   pic: 968 - More unfinished parts! (http://www.chiefdelphi.com/forums/showthread.php?t=52552)

Travis Covington 23-01-2007 07:01
pic: 968 - More unfinished parts!
 

Hunter 23-01-2007 07:02
Re: pic: 968 - More unfinished parts!
 
7068 T6 Aluminum.

Rafi Ahmed 23-01-2007 09:48
Re: pic: 968 - More unfinished parts!
 
I'd say that they are gearshafts. Maybe output shafts.

MrForbes 23-01-2007 10:46
Re: pic: 968 - More unfinished parts!
 
Unobtanium?

Nuttyman54 23-01-2007 10:50
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by squirrel (Post 563207)
Unobtanium?
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

JaneYoung 23-01-2007 10:56
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.

lukevanoort 23-01-2007 10:56
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by Hunter (Post 563097)
7068 T6 Aluminum.
I agree. The only thing I can think of that has similar numbers is Grade 9 titanium and that stuff is beastly expensive.

Gabe 23-01-2007 11:05
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.

MattB703 23-01-2007 11:08
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.

lukevanoort 23-01-2007 11:19
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by MattB703 (Post 563233)
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.
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)

Stephen Kowski 23-01-2007 11:36
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by lukevanoort (Post 563235)
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)
they are explained this....2 teams, 2 robots each, two demo gearboxes, please refer to the previous thread they had on their unfinished parts

Kirk 23-01-2007 13:19
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.

AdamHeard 23-01-2007 13:19
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.

Kirk 23-01-2007 13:37
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.

AdamHeard 23-01-2007 13:43
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by Kirk (Post 563318)
Its not tables and its not ABS but it is a type of plastic and it is going on the robot.
Black HDPE? PVC?

Kirk 23-01-2007 14:06
Re: pic: 968 - More unfinished parts!
 
Getting close. Has better strength properties then those.

lukevanoort 23-01-2007 14:13
Re: pic: 968 - More unfinished parts!
 
Garolite?

Cody Carey 23-01-2007 18:11
Re: pic: 968 - More unfinished parts!
 
Polycarbonate?

Andrew Blair 23-01-2007 18:15
Re: pic: 968 - More unfinished parts!
 
It does look most like a clear polycarb on a black background.

Rickertsen2 23-01-2007 20:31
Re: pic: 968 - More unfinished parts!
 
I really hope those are CNCed. Those would take forever to fabricated manually.

Cory 23-01-2007 20:35
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by Rickertsen2 (Post 563673)
I really hope those are CNCed. Those would take forever to fabricated manually.
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 :p

Dan Petrovic 23-01-2007 21:51
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by lukevanoort (Post 563221)
I agree. The only thing I can think of that has similar numbers is Grade 9 titanium and that stuff is beastly expensive.
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?

FourPenguins 23-01-2007 22:01
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by InfernoX14 (Post 563771)
Not to mention titanium against FIRST rules.
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.

Travis Covington 23-01-2007 22:41
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by raf4far (Post 563177)
I'd say that they are gearshafts. Maybe output shafts.
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!

GUI 23-01-2007 22:54
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.:rolleyes:

Holtzman 23-01-2007 23:01
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?

Lil' Lavery 23-01-2007 23:11
Re: pic: 968 - More unfinished parts!
 
Gearbox shafts
2 spur gears placed on the hex
Dog (or pin) placed in between

Travis Covington 23-01-2007 23:19
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by Holtzman (Post 563876)
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?
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.

David Brinza 23-01-2007 23:38
Re: pic: 968 - More unfinished parts!
 
Black plastic = acrylic?

Joe Ross 24-01-2007 21:54
Re: pic: 968 - More unfinished parts!
 
Quote:
Originally Posted by InfernoX14 (Post 563771)
Not to mention titanium against FIRST rules.
Titanium was only illegal for 2 years, and has been legal again for several years.


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