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 As we were lying the robot down to work on it
"CAD me like one of your french robots" - 1uan [more] |
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Just some Offseason CAD. Enjoy.
Specs will come soon, still figuring out weight.
-RC
parts from http://cad.team1323.com
Discussion
view entire thread
14-12-2009 22:44
NickE
Re: pic: MadTown Chassis Rev 4
Very nice render!
I'm a little confused as to what you are gaining with all of the triangular pocketing. Seems that it'd be stronger and lighter to just use thinner tubing. Also, if you're keeping the letters on the front tube, it seems like the material in the inside of the "O", "C", "A", "D", "B", "S", and "R" is not really supported very much at all. You might consider adding additional support beams to support this material.
Is the superstructure frame welded to the drivebase. If so, you might consider separating them and making them bolt together to ease in assembly and allow both to be worked on at the same time.
Your electronics board has an interesting layout. It seems like it might be beneficial to swap the positioning of the Power Distribution Board & the Jaguars to decrease the wire lengths between the board and the Victors. This could be complicated if you plan to use the Jaguars for driving, but its just an idea. It seems like your control subsystem is pretty nice and compact in the corner. I do have to ask why you're laying the battery down flat rather than standing it up. Seems like if it was vertical, you would have a lot more space in that rear compartment. Also, I don't see a relay (it might be hidden) or any solenoids/regulators/etc. Where do you plan on placing these?
Its somewhat concerning that the 2009-2010 Electronics take up the complete footprint of a full-sized drive base with no room to spare, but thats another topic. Nice job on this! Its obvious that you've put a ton of work into this and its very nice.
14-12-2009 22:47
Akash Rastogi
Re: pic: MadTown Chassis Rev 4
Excessive pocketing it seems (as Nick pointed out with the words in the front rail). Also, that entire top tier of the frame serves no obvious purpose. Care to explain? As always, nice CAD work.
If you have ruled out building a traditional West Coast frame, what led you to your decision? I know that Adam Heard is hard to argue with when it comes to the benefits of the frame, haha.
Sorry for all the questions bro, but I just finished JVN's white paper on decision making in robot design and I'm trying to get more people to post up quantitative rationale on designs. 
P.S.- You gotta remove all those electronics to show the people the smexi Poof/Pink inspired belly pan. 
14-12-2009 22:49
BrendanB
Re: pic: MadTown Chassis Rev 4
That looks beautiful RC!
Just out of curiosity, what is the purpose of the third motors on the gearboxes?
14-12-2009 23:03
Jeff 801
Re: pic: MadTown Chassis Rev 4
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Originally Posted by Akash Rastogi
Excessive pocketing it seems (as Nick pointed out with the words in the front rail). Also, that entire top tier of the frame serves no obvious purpose. Care to explain? As always, nice CAD work.
If you have ruled out building a traditional West Coast frame, what led you to your decision? I know that Adam Heard is hard to argue with when it comes to the benefits of the frame, haha. |
and Also I think it is westcoast sorta... Because the outside walls on the bottom seem to be 1/16 and the inside seem to be 1/8 thus the main support is coming from the inside rail and not the outside... or at least thats what it looks like... Rc correct me if I am wrong
and RC what's the weight on it as well as why do all wheels have to sprockets?... getting lazy?
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Originally Posted by BrendanB
That looks beautiful RC!
Just out of curiosity, what is the purpose of the third motors on the gearboxes? |
My bet is added power... I remember there being something on here about it... I am going to see if I can find it
EDIT/ http://www.chiefdelphi.com/forums/sh...ad.php?t=58173
14-12-2009 23:04
Vikesrock
Re: pic: MadTown Chassis Rev 4
It may be difficult to access the side of the PDB that is up against the back side of the frame. I would try to find a place to put it where you can get at both sides, unless you have a plan for how to maintenance it if necessary.
14-12-2009 23:35
R.C.
Re: pic: MadTown Chassis Rev 4
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Originally Posted by NickE
Very nice render!
I'm a little confused as to what you are gaining with all of the triangular pocketing. Seems that it'd be stronger and lighter to just use thinner tubing. Also, if you're keeping the letters on the front tube, it seems like the material in the inside of the "O", "C", "A", "D", "B", "S", and "R" is not really supported very much at all. You might consider adding additional support beams to support this material. Is the superstructure frame welded to the drivebase. If so, you might consider separating them and making them bolt together to ease in assembly and allow both to be worked on at the same time. Your electronics board has an interesting layout. It seems like it might be beneficial to swap the positioning of the Power Distribution Board & the Jaguars to decrease the wire lengths between the board and the Victors. This could be complicated if you plan to use the Jaguars for driving, but its just an idea. It seems like your control subsystem is pretty nice and compact in the corner. I do have to ask why you're laying the battery down flat rather than standing it up. Seems like if it was vertical, you would have a lot more space in that rear compartment. Also, I don't see a relay (it might be hidden) or any solenoids/regulators/etc. Where do you plan on placing these? Its somewhat concerning that the 2009-2010 Electronics take up the complete footprint of a full-sized drive base with no room to spare, but thats another topic. Nice job on this! Its obvious that you've put a ton of work into this and its very nice. |
The whole chassis is 1/16th and there are only two pieces of 1/8th. Which are the inside chassis rails. I was being lazy with the letters, but I will do for sure during season if I put a full rail across.
As for pneumatics, I have no clue. I was just trying to squeeze in as much as possible. It depends on the game, I probably won't need that many Vics. So that may improve space. Also hoping for 973 to market that manifold they had up.
I may look into riveting the top piece of the frame to make ops easier.
Thanks for the suggestions.
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Originally Posted by BrendanB
That looks beautiful RC!
Just out of curiosity, what is the purpose of the third motors on the gearboxes? |
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Originally Posted by Vikesrock
It may be difficult to access the side of the PDB that is up against the back side of the frame. I would try to find a place to put it where you can get at both sides, unless you have a plan for how to maintenance it if necessary.
|
Jeff nailed the second layer use on the money and Jeff, I think I fixed that wheel problem, but forgot to re-render it.
Thanks for suggestions, keep them coming.
-RC
14-12-2009 23:37
M. Mellott
Re: pic: MadTown Chassis Rev 4
No comments about the the design (maybe later, too late tonight)--I just wanted to commend the beautiful CAD modeling/rendering work. Very nice! 
15-12-2009 00:46
R.C.
Re: pic: MadTown Chassis Rev 4
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Originally Posted by Akash Rastogi
Excessive pocketing it seems (as Nick pointed out with the words in the front rail). Also, that entire top tier of the frame serves no obvious purpose. Care to explain? As always, nice CAD work.
If you have ruled out building a traditional West Coast frame, what led you to your decision? I know that Adam Heard is hard to argue with when it comes to the benefits of the frame, haha. Sorry for all the questions bro, but I just finished JVN's white paper on decision making in robot design and I'm trying to get more people to post up quantitative rationale on designs. P.S.- You gotta remove all those electronics to show the people the smexi Poof/Pink inspired belly pan. |
The hole pattern I feel is worth it and the idea was taken from FRC 801/973.
Currently, I'm working with Adam to make a westcoast dt. Never done it and it should be a great experience.
Here's the render of the Pan itself.
Which was inspired by 254/968.
-RC
15-12-2009 01:22
GarrettF2395
Re: pic: MadTown Chassis Rev 4
I've been waiting for a picture of this for awhile now. Great work RC as always! 
15-12-2009 04:05
Cory
Re: pic: MadTown Chassis Rev 4
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Originally Posted by rc_cola1323
The whole chassis is 1/16th and there are only two pieces of 1/8th. Which are the inside chassis rails. I was being lazy with the letters, but I will do for sure during season if I put a full rail across. -RC |
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Originally Posted by rc_cola1323
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15-12-2009 11:35
AndyB
Re: pic: MadTown Chassis Rev 4
Certainly covering our bases with 10 speed controllers, aren't we?
Very nice render. This base looks pretty solid. I'm curious to see how you'll do your chain tensioning (zip-tie blocks?). I don't really understand your pocketing methods on the bottom or the need for an upper structure, but I'd imagine you have some sort of reasoning behind it. Nice job though.
15-12-2009 11:47
Jeff 801
Re: pic: MadTown Chassis Rev 4
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Originally Posted by AndyB
Certainly covering our bases with 10 speed controllers, aren't we?
Very nice render. This base looks pretty solid. I'm curious to see how you'll do your chain tensioning (zip-tie blocks?). I don't really understand your pocketing methods on the bottom or the need for an upper structure, but I'd imagine you have some sort of reasoning behind it. Nice job though. |
15-12-2009 14:49
Andrew Schreiber
Re: pic: MadTown Chassis Rev 4
Going to make some guesses, I assume this is drop center? How is the weight distribution front to back? Looks rather centered. I would suggest avoiding this, there have been many reports of the rock causing unpredictable behavior. Left to right distribution looks ok.
Why on earth did you stay 2d with the electronics? This many ESCs screams to move into 3d space. It will make packaging a collection mechanism (if applicable) much easier and make your electronics guys less likely to kill you. Where are the paths for the wires? You have to have a bundle of 14 10 gage wires from the back of the bot (PD board) to the front (Victors). Trust me, that won't be fun. Suggestions; Remove one of the 884s, space the rest out a bit. Turn the Jags 90 degrees either way, you have a cross bar right next to them which will make servicing them nasty. Also, make mounts for them to sit at a ~30 degree angle with a slight overlap. This will open up a path through the middle of the chassis for the wires to run to the front. Move your on/off switch closer to the back to let wires run where it is now. Running your PWM cables is going to be miserable, get some clearance between anywhere you need to place a cable and any frame members.
Can you tell that I am a wiring/programming guy?
Looks nice other than those minor complaints. Very clean render, thank you for not making it grey on a black background. Very crisp and clean, I can actually see everything.
As for lightening, I assume that is 1.5x1? Take a .75" bit and pop a hole every 1.5". Probably doesn't look as cool but it is a pretty simple process, you know, a job for a freshman (or a programmer).
<unrelated>w00t 1001st post</unrelated>
16-12-2009 10:53
Rion Atkinson
Re: pic: MadTown Chassis Rev 4
First off. Props to you RC. Looks awesome. Takes alot time to do that. Over all, how long did that take you?
Also. Just as a side note incase you use the chassis for a T-Shirt launcher or something. I'm assuming you put all the electronics in there just to show that you can. And trust me. I'm shocked you could! But as Andrew has stated why not go 3d? You have made a wonderful shelf already. Just throw some plexiglass or something similar to your deck on the chassis ontop of it and you could easliy use that. Just a thought.
16-12-2009 14:35
AdamHeard
Re: pic: MadTown Chassis Rev 4
I think he put that many speed controllers in just as a demonstration; They would likely use less during season.
We ran the jaguars in the exact same configuration on a summer prototype with no issue, we only had ~1/2" of clearance from the frame rail.
16-12-2009 16:54
R.C.
Re: pic: MadTown Chassis Rev 4
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Originally Posted by Formerly Famous
First off. Props to you RC. Looks awesome. Takes alot time to do that. Over all, how long did that take you?
Also. Just as a side note incase you use the chassis for a T-Shirt launcher or something. I'm assuming you put all the electronics in there just to show that you can. And trust me. I'm shocked you could! But as Andrew has stated why not go 3d? You have made a wonderful shelf already. Just throw some plexiglass or something similar to your deck on the chassis ontop of it and you could easliy use that. Just a thought. |
08 and 09.
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Originally Posted by AdamHeard
I think he put that many speed controllers in just as a demonstration; They would likely use less during season.
We ran the jaguars in the exact same configuration on a summer prototype with no issue, we only had ~1/2" of clearance from the frame rail. |
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Originally Posted by Andrew Schreiber
Going to make some guesses, I assume this is drop center? How is the weight distribution front to back? Looks rather centered. I would suggest avoiding this, there have been many reports of the rock causing unpredictable behavior. Left to right distribution looks ok.
|
-RC
16-12-2009 17:20
AdamHeard
Re: pic: MadTown Chassis Rev 4
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Originally Posted by rc_cola1323
The Drivetrain, I really have no clue at the moment. I'll go home and open up Solidworks and check the time it has on it. Yep, the electronics are there for show and we have used our "3d" space in the past and we usually build our electronics layout around the robot.
08 and 09. Yep, the speed controllers are there for demo. Yep, the centers for the 8wd drive are dropped and the 6wd also. I'll take a look at Solidworks today and see where it says the center is. -RC |
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