View Full Version : pic: 968 - More unfinished parts!
Travis Covington
23-01-2007, 07:01
[cdm-description=photo]26393[/cdm-description]
Rafi Ahmed
23-01-2007, 09:48
I'd say that they are gearshafts. Maybe output shafts.
MrForbes
23-01-2007, 10:46
Unobtanium?
Nuttyman54
23-01-2007, 10:50
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
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
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.
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
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
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
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
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
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 (http://www.rawc.net/gallery2/Robotics07/build/?g2_enterAlbum=1).
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
Its not tables and its not ABS but it is a type of plastic and it is going on the robot.
Black HDPE? PVC?
Getting close. Has better strength properties then those.
lukevanoort
23-01-2007, 14:13
Garolite?
Cody Carey
23-01-2007, 18:11
Polycarbonate?
Andrew Blair
23-01-2007, 18:15
It does look most like a clear polycarb on a black background.
Rickertsen2
23-01-2007, 20:31
I really hope those are CNCed. Those would take forever to fabricated manually.
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
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
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
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!
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
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
Gearbox shafts
2 spur gears placed on the hex
Dog (or pin) placed in between
Travis Covington
23-01-2007, 23:19
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
Black plastic = acrylic?
Joe Ross
24-01-2007, 21:54
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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