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-   -   pic: FRC 1086 Off-season teaser #1 (http://www.chiefdelphi.com/forums/showthread.php?t=130293)

Electronica1 15-08-2014 00:13
pic: FRC 1086 Off-season teaser #1
 

nathannfm 15-08-2014 00:14
Re: pic: FRC 1086 Off-season teaser #1
 
Very nice, looks like everything could be done without a mill or maybe even a lathe, correct?

asid61 15-08-2014 05:40
Re: pic: FRC 1086 Off-season teaser #1
 
Looks good. Is that the only support plate, or will there be a second one beneath?

tr6scott 15-08-2014 07:43
Re: pic: FRC 1086 Off-season teaser #1
 
I'm guessing not photography? :)

http://www.mcbride4.org/?attachment_id=207

Electronica1 15-08-2014 07:46
Re: pic: FRC 1086 Off-season teaser #1
 
Quote:
Originally Posted by nathannfm (Post 1396509)
Very nice, looks like everything could be done without a mill or maybe even a lathe, correct?
We actually did use a lathe, but we were able to avoid using a mill.

Quote:
Originally Posted by asid61 (Post 1396523)
Looks good. Is that the only support plate, or will there be a second one beneath?
That is the only support plate. The module mounts nicely with the old style kop c channel.

Gdeaver 15-08-2014 08:10
Re: pic: FRC 1086 Off-season teaser #1
 
Can't see inside but, That hole looks like it is for accessing a set screw. The transfer axial should be designed so that the axle is constrained eliminating the need for a set screw. Racking. What is going to keep the lower module from becoming a parallelogram under high stress and load? Did you use thrust bearing for the miter gear loads or are you putting this on the ball bearings? What wheel is that? Allot of cantilevered load for that single mounting plate and those welds. How is this going to be driven? Is it a module or are you going to use a separate power pack? Only way to know what you got is to put it on a fully loaded robot frame and drive the hell out of it. See what wears. Igus bushing instead of bronze?

JDGallagher 15-08-2014 10:56
Re: pic: FRC 1086 Off-season teaser #1
 
Quote:
Originally Posted by Gdeaver (Post 1396528)
Can't see inside but, That hole looks like it is for accessing a set screw. The transfer axial should be designed so that the axle is constrained eliminating the need for a set screw. Racking. What is going to keep the lower module from becoming a parallelogram under high stress and load? Did you use thrust bearing for the miter gear loads or are you putting this on the ball bearings? What wheel is that? Allot of cantilevered load for that single mounting plate and those welds. How is this going to be driven? Is it a module or are you going to use a separate power pack? Only way to know what you got is to put it on a fully loaded robot frame and drive the hell out of it. See what wears. Igus bushing instead of bronze?
There are internal support braces that will keep the lower part rigid. It is a module. 1 Cim 1 mini cam per module. Also it's worth noting that on the final version we will be using our own custom 2" performance wheel instead of the wheel you see there.

JDGallagher 15-08-2014 10:59
Re: pic: FRC 1086 Off-season teaser #1
 
It's also worth noting that the internal support is not visible in this picture because this version of our design hadn't incorporated them.

jwfoss 15-08-2014 11:02
Re: pic: FRC 1086 Off-season teaser #1
 
Quote:
Originally Posted by JDGallagher (Post 1396539)
There are internal support braces that will keep the lower part rigid. It is a module. 1 Cim 1 mini cam per module. Also it's worth noting that on the final version we will be using our own custom 2" performance wheel instead of the wheel you see there.
2" Diameter? How concerned are you with the wear rate?
With Live axles I'd suggest taking a look at other solid rubber wheels, perhaps a Colson.

JDGallagher 15-08-2014 11:35
Re: pic: FRC 1086 Off-season teaser #1
 
Quote:
Originally Posted by jwfoss (Post 1396542)
2" Diameter? How concerned are you with the wear rate?
With Live axles I'd suggest taking a look at other solid rubber wheels, perhaps a Colson.
We've considered colsons and used them before but our CAD team tells us that performance wheels are significantly cooler looking.

mrmummert 15-08-2014 17:38
Re: pic: FRC 1086 Off-season teaser #1
 
Is this something we'll see at the Rumble in October?

nathannfm 15-08-2014 20:19
Re: pic: FRC 1086 Off-season teaser #1
 
Quote:
Originally Posted by JDGallagher (Post 1396539)
It is a module. 1 Cim 1 mini cam per module.\
You mean 1 CIM to drive it and 1 Mini CIM to turn it?

Electronica1 15-08-2014 20:38
Re: pic: FRC 1086 Off-season teaser #1
 
Quote:
Originally Posted by nathannfm (Post 1396597)
You mean 1 CIM to drive it and 1 Mini CIM to turn it?
No, we were looking at how some teams were running 8 motors to drive their octocanums, so we thought it would be cool to give the same treatment to swerve. We use andymark motors to turn them.

Tyler2517 15-08-2014 21:07
Re: pic: FRC 1086 Off-season teaser #1
 
Quote:
Originally Posted by Electronica1 (Post 1396599)
No, we were looking at how some teams were running 8 motors to drive their octocanums, so we thought it would be cool to give the same treatment to swerve. We use andymark motors to turn them.
So a 12 motor drive.... Sounds like a lot of power draw....

cadandcookies 16-08-2014 18:22
Re: pic: FRC 1086 Off-season teaser #1
 
Looks like exactly what the off season is for. Make sure to post lots of puctures, and maybe a writeup when you're done? I really like the idea of a lower barrier of entry for swerve.

Good job, keep us updated!


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