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Unread 13-06-2008, 01:11
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pic: 968's 2006 practice bot chassis

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Unread 13-06-2008, 01:15
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Re: pic: 968's 2006 practice bot chassis

Gorgeous system. We can all learn so much from this drive base. It doesn't matter who built it, students or mentors (yeah, I know some people would complain about it being made by some mentors... but that's not the issue I'm talking about here). What does matter, however, is that this is (nearly) perfect engineering. The West Coast Drive is essentially the penultimate drive base, in my opinion. 254 and 968 have boiled out any unnecessary material and structure.

Hey, while I'm at it, does anyone from either 968 or 254 happen to know how much that base (as pictured) would weigh? I'm doing some design work, and it would be nice to have something to compare to.
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Unread 13-06-2008, 01:43
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Re: pic: 968's 2006 practice bot chassis

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Originally Posted by CraigHickman View Post
The West Coast Drive is essentially the penultimate drive base, in my opinion.
I just have to ask, then, what do you consider to be the ultimate drive base?
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Unread 13-06-2008, 01:45
CraigHickman
 
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Re: pic: 968's 2006 practice bot chassis

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Originally Posted by Pat Fairbank View Post
I just have to ask, then, what do you consider to be the ultimate drive base?
Judging as FIRST never stops, and teams keep getting better, I'd have to say we haven't seen it yet, and every time we think we have, it will get topped.

EDIT: removed something that apprently ticked someone off...

Last edited by CraigHickman : 13-06-2008 at 14:33.
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Unread 13-06-2008, 06:10
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Re: pic: 968's 2006 practice bot chassis

I keep forgetting to find out where they chrome the wheels. No one locally does it here in Hawaii. Liking the "bling bling."
Sorry 968, we really are not trying to look more and more like your bots.
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Unread 13-06-2008, 09:18
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Re: pic: 968's 2006 practice bot chassis

I have to say that that's one of the best parts of FIRST, you can always use ideas from other robots, but they'll almost alway look completely different.
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Unread 13-06-2008, 10:11
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Re: pic: 968's 2006 practice bot chassis

I agree that this is a very good drive base that has really become the signature for many westcoast teams. But I still wouldn't build one for any of my bots, still don't see any point of exposing my wheels like that... (I know because I saw my team knock two of 254's wheels off in 2005)
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Unread 13-06-2008, 11:48
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Re: pic: 968's 2006 practice bot chassis

What's that aluminum on the back for?
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Unread 13-06-2008, 11:49
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Re: pic: 968's 2006 practice bot chassis

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Originally Posted by cooker52 View Post
What's that aluminum on the back for?
It's a roller that helps to keep the chassis from riding up onto balls.
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Unread 13-06-2008, 11:54
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Re: pic: 968's 2006 practice bot chassis

Thanks.

Did you guys also have another piece to this? I see nuts that look like they're for an expansion.
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Unread 13-06-2008, 12:09
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Re: pic: 968's 2006 practice bot chassis

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Originally Posted by cooker52 View Post
Thanks.

Did you guys also have another piece to this? I see nuts that look like they're for an expansion.
Yes

http://www.chiefdelphi.com/media/photos/23983
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Unread 13-06-2008, 13:09
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Re: pic: 968's 2006 practice bot chassis

Eh, the shiny wheels are protected (heh, and covered up) by bumpers nowadays. If I remember correctly, there were no bumpers in 2005. It's still a great solid drive system.

I have to admit I can't figure out how to elegantly mount an AM super shifter to it, but I figure there's still plenty of time to work it out.
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Unread 13-06-2008, 13:22
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Re: pic: 968's 2006 practice bot chassis

Quote:
Originally Posted by JesseK View Post
Eh, the shiny wheels are protected (heh, and covered up) by bumpers nowadays. If I remember correctly, there were no bumpers in 2005. It's still a great solid drive system.

I have to admit I can't figure out how to elegantly mount an AM super shifter to it, but I figure there's still plenty of time to work it out.
Mounting a SS should be pretty "simple." Just make your own symmetrical side plates, assemble with standoffs, and have two holes designed in that are co linear with the output shaft of the center wheel. Those two holes allow the gearbox to bolt to the chassis member.
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Unread 13-06-2008, 18:09
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Re: pic: 968's 2006 practice bot chassis

Quote:
Originally Posted by CraigHickman View Post
Mounting a SS should be pretty "simple." Just make your own symmetrical side plates, assemble with standoffs, and have two holes designed in that are co linear with the output shaft of the center wheel. Those two holes allow the gearbox to bolt to the chassis member.
If you line up your cross members right, you can bolt on the SS's without any modification to them (besides longer bolts). 973 did that this year as we didn't have the resources to make our own gearbox plates. I'll take pictures when I can.
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Unread 04-07-2008, 22:20
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Re: pic: 968's 2006 practice bot chassis

i could never understand how the wheels stay on. could someone please explain this to me
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