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Unread 09-23-2018, 10:00 PM
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pic: 5803 4513 Double-Climb West Valley

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Unread 09-23-2018, 10:01 PM
mman1506 mman1506 is offline
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Re: pic: 5803 4513 Double-Climb West Valley

What's up with the chain path on 4513's bot? I'm trying to figure it out but it's stumping me.
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Unread 09-24-2018, 07:39 AM
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Re: pic: 5803 4513 Double-Climb West Valley

Quote:
Originally Posted by mman1506 View Post
What's up with the chain path on 4513's bot? I'm trying to figure it out but it's stumping me.
It almost looks as if the small one is for actuating the arm and the big one is just some type of hard limit for the rotation of the arm.
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Unread 09-24-2018, 11:46 AM
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Re: pic: 5803 4513 Double-Climb West Valley

Thatís a cable protector...
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Unread 09-24-2018, 11:53 AM
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Re: pic: 5803 4513 Double-Climb West Valley

Quote:
Originally Posted by carpedav000 View Post
Thatís a cable protector...
That's not a a able protector. It's bolted through on the top like it's chain and it's also wrapped around a sprocket at the bottom of it's run. Also looks exactly like the chain used in the run right next to it.
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Unread 09-24-2018, 12:03 PM
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Re: pic: 5803 4513 Double-Climb West Valley

Quote:
Originally Posted by carpedav000 View Post
Thatís a cable protector...
4513's cable protectors are at the back. In the front is a fair bit of chain.
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Unread 09-24-2018, 04:33 PM
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Re: pic: 5803 4513 Double-Climb West Valley

It appears that the long chain is fastened at the top of the lift and the bottom. A sprocket is engaged in the middle of the chain. When that sprocket turns, it lifts and lowers the arm by moving the arm up and down the chain.
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Unread 09-24-2018, 04:36 PM
mman1506 mman1506 is offline
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Re: pic: 5803 4513 Double-Climb West Valley

Quote:
Originally Posted by Tom Line View Post
It appears that the long chain is fastened at the top of the lift and the bottom. A sprocket is engaged in the middle of the chain. When that sprocket turns, it lifts and lowers the arm by moving the arm up and down the chain.
But why?
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Unread 09-24-2018, 04:56 PM
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Re: pic: 5803 4513 Double-Climb West Valley

Looking at this picture, it seems like the PG71 is powering the sprocket that 'climbs' in the loop of chain, making the four bar and intake go up. I'm guessing the two close sprockets are to get a better chain wrap. Really strange but they seemed to do pretty well.
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Unread 09-24-2018, 05:01 PM
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Re: pic: 5803 4513 Double-Climb West Valley

Quote:
Originally Posted by Mike Marandola View Post
making the four bar...
im fairly sure that the lift is not a four bar, at least not like 1778/33's. https://youtu.be/EmvDj4SMwQ0
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Unread 09-24-2018, 05:01 PM
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Re: pic: 5803 4513 Double-Climb West Valley

I am from team 4513 and yes the chain is used for raising and lowering the arm. We used 2 sprockets, one fixed and one able to move so that as the arm extends in a half circle motion it keeps tension so the chain doesn't slip
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Unread 09-24-2018, 05:05 PM
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Re: pic: 5803 4513 Double-Climb West Valley

Quote:
Originally Posted by MikLast View Post
im fairly sure that the lift is not a four bar, at least not like 1778/33's. https://youtu.be/EmvDj4SMwQ0
Yes it is, there are two next to each other. 1778 and 33 both have a double reverse four bar.
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Unread 09-24-2018, 05:11 PM
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Re: pic: 5803 4513 Double-Climb West Valley

We have 2 stages to our lifting mechanism, the first stage is a 4 bar system and the other section is a elevator that moves straight up and down
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Unread 09-24-2018, 05:11 PM
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Re: pic: 5803 4513 Double-Climb West Valley

Quote:
Originally Posted by Mike Marandola View Post
Yes it is, there are two next to each other. 1778 and 33 both have a double reverse four bar.
Maybe im just not used to seeing them on an elevator also...

Theres a reason i didn't help build haha
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Unread 09-24-2018, 06:42 PM
mman1506 mman1506 is offline
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Re: pic: 5803 4513 Double-Climb West Valley

Quote:
Originally Posted by Nathanarcher500 View Post
I am from team 4513 and yes the chain is used for raising and lowering the arm. We used 2 sprockets, one fixed and one able to move so that as the arm extends in a half circle motion it keeps tension so the chain doesn't slip
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