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pic: Average Winch Innards
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Re: pic: Average Winch Innards
That's really neat, and a good way to compact the winch (the motor is inside the winch drum, instead of beside it). I'm still really wary of loading the CIM structurally, but more and more teams seem to be experimenting with the idea.
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Re: pic: Average Winch Innards
:confused: I can't seem to make sense of the picture and the text at the same time.
Is that thing which looks like a 2.5" shaft collar really a rotating bearing? Is the CIM mounted to the chassis, or is the end of the gearbox shaft? If the shaft, do you have slip rings, or just enough slack to take up the number of turns the drum will make, and how do you support the other (CIM end) of the drum? If the CIM, how is it mounted to the chassis which still allows the drum to turn? |
Re: pic: Average Winch Innards
I agree the photo and text aren't perfectly clear. Here's my understanding: The winch drum (not shown) surrounds the motor and gearbox, supported on the left by the black bushing (which fits snugly over the CIM), and on the right by the versaplanetary shaft. The whole thing mounts using the silver shaft collar and maybe? another bearing on the versaplanetary shaft?
A photo of the full assembly would be helpful |
Re: pic: Average Winch Innards
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Re: pic: Average Winch Innards
This is very interesting would you happen to have any close up video of it in action?
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Very clever! Might have to remember this if we need to winch anything this year.
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Very cool. I'm curious, is there anything special with the wiring for this? How do you accommodate the motor rotating so many times? I've seen a few robots do motors in rollers in the past, but I've always been unsure as to how exactly they wire them.
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Re: pic: Average Winch Innards
The Winch functioned as you all have guessed, although, we did end up using a half inch ratcheting wrench to prevent the system from reversing after endgame.
In all honesty we don't have the best climber, it was fairly slow and usually made more sense to just score 2 balls and take the tower. Nice to have it working though. We saw some other teams like 4967 do something similar to our method, not sure how well it worked, never got to see it in a match! It was mounted on 2 brackets riveted to the belly-pan. |
Re: pic: Average Winch Innards
[quote=NoshBrooks;1616372]The Winch functioned as you all have guessed, although, we did end up using a half inch ratcheting wrench to prevent the system from reversing after endgame.
In all honesty we don't have the best climber, it was fairly slow and usually made more sense to just score 2 balls and take the tower. Nice to have it working though. We saw some other teams like 4967 do something similar to our method, not sure how well it worked, never got to see it in a match! It was mounted on 2 brackets riveted to the belly-pan. The sheath spun around the sim and the sim was hard mounted to the frame. |
Re: pic: Average Winch Innards
o.O
The pictures of the full assembly are the closest to "magic" I have seen in FRC in a long time. Very cool design. |
Re: pic: Average Winch Innards
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I apologize for my cryptic description. Had meant to add a picture or sketch of the complete assembly, but I have been traveling on business this week and don't have access to team drawings from here. The comment that this winch design is not very weight-efficient is correct; the observation that low bar robots like ours typically had weight to spare this year also applies to 3620. This winch worked for us because it fit in the space we had available, and put the weight where it helped us. We also thought it was cool to hide the CIM inside the drum and use its body as a spindle. As Noah said, our climber was not very fast. It helped in a few situations, but often we were more productive shooting in the final seconds. However, you cannot beat scaling for wow factor. Our triple at IRI with HOT and HYPE will live in my memory forever. :) |
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