
25-11-2012, 23:01
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Dare greatly
AKA: 1640 coach 2010-2014
 FRC #2641 (PCCR; Refs & RIs)
Team Role: Coach
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Join Date: Jan 2008
Rookie Year: 2007
Location: PA
Posts: 1,640
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Re: Be afraid... Be VERY Afraid
For viewing convenience:
Renders: here and here
DanielDTech in blue
- The CIM motor isn't wasted at all
- This is not only an interesting design, but a revolutionary one, in and beyond FRC
- Yes, both wheels are simultaneously powered
- ...This does indeed have something to do with shifting, I'll tell you that. But there's something HUGE that you guys are missing...
- A and B are wrong. C is partially correct!
A. Both "wheels" touch the ground at the same time
B. The "wheels" aren't actually for driving
C. The whole assembly pivots back and forth. This would work well for bumpy fields/ off road applications outside of FIRST
- ...yes, it's just the angle. Both wheels are actuated as a matter of fact.
While the guess that it is a shifting wheel, as it stands right now it doesn't appear that either of the wheels are actuated (Might just be the angle).
- That is the closest guess yet. But again, you're missing something huge... The part that I think is pretty difficult for anyone to guess, otherwise I wouldn't put $15 bucks on it
So it's like Octocanum but switching between two traction wheels (for different speeds/wheelbases).
- You are on track, but still very wrong. This is certainly revolutionary, keep in mind that there is a HUGE concept that you're not seeing here.
This is one quarter of a wheel-shifting drivetrain, where two different types of wheel can be changed at will, or used for climbing. Again, I don't think this is exactly revolutionary for FRC--similar things have been done on several occasions.
- Indeed, it is aesthetically pleasing and it does not flip. But don't totally throw away the pivoting idea
I don't think it flips 180...
- You are 100% wrong
I'm probably 100% wrong but it could possibly be that you have an 8WD narrowed down to a single module.
- I don't have the pivoting setup on here... This is about 30% of the actual mechanism.
Is this thing self-pivoting? Or do you just not have the pivoting setup in this model?
- You're missing nearly everything. Like I said, this is about 30% of the mechanism. It's not at all what you guys think it is.
Automatic load balancing/switching between pushing force and higher speed? A CVT in there somewhere? Most of the device is shown in the render. I don't see any mystery really. I must be missing something here.
- Very nice guesses! The unit is indeed very compact and light; it needs to be, since there will be more than one on the robot. But the big secret here is actually much simpler than any of these great educated guesses.
It also looks like it is meant to be mounted through a hole in a sheet metal [or plywood] base/pan...Maybe this is to simplify frame design? (Just a pan with 4 wheel holes?) ... Or maybe it could be mounted in a lazy susan and used as a crab module? ... Another aspect I see is that the Cim is off center. Perhaps some sort of a counterweight? ... If you tossed a tread on the wheel, you'd already have a spare wheel you could toss in.
- In part, yes!
A dual wheel rocker where each wheel is a different speed with an automatic shifter mechanism?
Editor's note: raise your hand if you're surprised this was JVN, that he got the first "yes" guess or that the first word in the post was "Simpsons"
- It definitely doesn't pivot that much
Well is looks like it definitely flips in the direction of the larger wheel with the larger wheel traveling under to other side raising the small wheel way up in the air and flips the CIM completely to the other side...
- Nope
The drive will lift up the chassis and be able to traverse a step or bump.
[/ImTooMethodical] I'll guess later.
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