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-   -   pic: FRC488 - 2014 Octocanum Pod - Top (http://www.chiefdelphi.com/forums/showthread.php?t=125419)

Aren_Hill 30-01-2014 14:24

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by Madison (Post 1334808)
Solidworks says they're 5.75 lbs. each.

I'd be quite surprised if whats pictured is that heavy, my butterfly module from last year was 2.38lbs with very little effort in regards to weight. From the looks of it there isn't much more here.

-Aren

AdamHeard 30-01-2014 14:29

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by Aren_Hill (Post 1334877)
I'd be quite surprised if whats pictured is that heavy, my butterfly module from last year was 2.38lbs with very little effort in regards to weight. From the looks of it there isn't much more here.

-Aren

We really wanted to run a octonum variant of this above module but it didn't match what we wanted to do with the game.

It would have been insanely clean. If anyone hasn't seen Aren's butterfly (which we ripped off), it's hand downs the cleanest setup anyone has run by a huge margin. That's why we stole it ;)

Electronica1 30-01-2014 14:32

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by Aren_Hill (Post 1334877)
I'd be quite surprised if whats pictured is that heavy, my butterfly module from last year was 2.38lbs with very little effort in regards to weight. From the looks of it there isn't much more here.

-Aren

I think that weight included motors (and the weight you listed is lighter than one cim so i know the weight you listed does not include a motor).

Madison 30-01-2014 14:56

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by Electronica1 (Post 1334885)
I think that weight included motors (and the weight you listed is lighter than one cim so i know the weight you listed does not include a motor).

Yes -- the 5.75 lbs. does include the weight of a CIM motor (which I have entered as 2.8 lbs.).

wireties 30-01-2014 15:14

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
It is interesting and instructive to see the evolution of your drive from year-to-year. It is clever and well done. Good luck this year!

Bryce2471 30-01-2014 15:47

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
I'm also curious why you decided to run your belt and gears on the same side of the mecanum wheel. It seems like if you ran the belt on the other side of the module, then your traction mode would have a wider wheel base and the cim shaft would take less side load. I'm sure you have good reasoning for why the module is made this way. I'm just curious to see what your thinking was.

AllenGregoryIV 30-01-2014 15:50

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by pfreivald (Post 1334814)
Okay, so you're about 1.5 lbs lighter than us, per pod, but (I think?) we have a greater gear reduction (7x) when switching to traction mode.

Thanks for sharing--it's always neat to see other teams' take on the same basic functionality.

Why such a low gear reduction, seems like 488's will be traction limited.

Quote:

Originally Posted by Bryce2471 (Post 1334922)
I'm also curious why you decided to run your belt and gears on the same side of the mecanum wheel. It seems like if you ran the belt on the other side of the module, then your traction mode would have a wider wheel base and the cim shaft would take less side load. I'm sure you have good reasoning for why the module is made this way. I'm just curious to see what your thinking was.

I would guess it is so that they don't have to cut the CIM shafts, if you run them normally the end of the shaft hits the mecanum wheel.

Answer42 30-01-2014 15:50

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by AdamHeard (Post 1334879)
We really wanted to run a octonum variant of this above module but it didn't match what we wanted to do with the game.

It would have been insanely clean. If anyone hasn't seen Aren's butterfly (which we ripped off), it's hand downs the cleanest setup anyone has run by a huge margin. That's why we stole it ;)

Would you mind posting a pic of it? I'm curious now.

AllenGregoryIV 30-01-2014 15:53

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by Answer42 (Post 1334925)
Would you mind posting a pic of it? I'm curious now.

They have a website with a really good description.
http://www.teamneutrino.org/seasons/...bot/butterfly/

Our octocanum modules this year were heavily inspired by team neutino's work.

AdamHeard 30-01-2014 15:57

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by AllenGregoryIV (Post 1334927)
They have a website with a really good description.
http://www.teamneutrino.org/seasons/...bot/butterfly/

Our octocanum modules this year were heavily inspired by team neutino's work.

This then nest in a single 2x3 (for us) or 3x3 (for them) tube which is also your frame. Real clean.

It's the lightest cleanest butterfly (that could be an octonum if hte tube was 4" wide) that anyone has done.

Answer42 30-01-2014 16:10

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by AdamHeard (Post 1334932)
This then nest in a single 2x3 (for us) or 3x3 (for them) tube which is also your frame. Real clean.

It's the lightest cleanest butterfly (that could be an octonum if hte tube was 4" wide) that anyone has done.

Very elegant. I'll definitely remember that one.

pfreivald 30-01-2014 17:39

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by AllenGregoryIV (Post 1334924)
Why such a low gear reduction, seems like 488's will be traction limited.

We're still playing with wheels to maximize our traction. :)

Trent B 30-01-2014 23:29

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Quote:

Originally Posted by Aren_Hill (Post 1334877)
I'd be quite surprised if whats pictured is that heavy, my butterfly module from last year was 2.38lbs with very little effort in regards to weight. From the looks of it there isn't much more here.

-Aren

The solid 0.4lb Delrin wheel was definitely not doing it any favors with regards to weight.

RobotDoktor 31-01-2014 23:09

Re: pic: FRC488 - 2014 Octocanum Pod - Top
 
Nice. I really like how compact the modules are. Ours are a lot longer, but we have 6" mecanums and 4x2 Colsons.


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