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#1
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Re: Mystery Sprockets
Quote:
However, the transmission sprockets are a different story. Some use as few as 9 teeth, so the load per tooth is significantly higher. The general way of doing things is to use steel sprockets at the drive end of the chain, and aluminum sprockets at the wheel end of the chain. It works. |
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#2
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Re: Mystery Sprockets
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There are lots of ways to get things done. It takes some perseverance, creativity, and innovation, but one of the great things about FIRST is that there is a tremendous community out there to help you make it happen if you can't do it all yourself. My fundamental point is that before you have to resort to buying your a way out of a problem, make sure that you really tap all the resources that you have at your disposal. Some of them may not be obvious at first, but they are there and can add to your experience. -dave |
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#3
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Re: Mystery Sprockets
One untapped resource could be a "KOP sprockets wanted" post on CD....my guess is many teams are not using them, and there are literally several hundred of those sprockets sitting on shelves and in boxes going unused, right now, as we speak. I personally know of a pair of sprockets, but I don't have authority to give them away.
You migth check the rules first though, as the parts might not be available for sale anywhere, so using "free" ones might not be allowed. |
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#4
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Re: Mystery Sprockets
Quote:
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#5
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Re: Mystery Sprockets
Wow, it's nice to see I could come up with a tough question, without even trying
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#6
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Re: Mystery Sprockets
Quote:
http://forums.usfirst.org/showthread.php?t=1834 Quote:
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#7
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Re: Mystery Sprockets
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I just tried the link above and got "you do not have permission to access this page". |
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#8
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Re: Mystery Sprockets
Weird, I got the same message. I saw it just after 9:00 pm.
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#9
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Re: Mystery Sprockets
Also, it seems that what Karthik pasted is directly in contradiction with another Q&A, which asked where to obtain KOP sprockets.
Quote:
http://forums.usfirst.org/showthread.php?t=1508 |
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#10
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Re: Mystery Sprockets
Just a tip we found out today:
When using the IFI sprockets on the kit wheels, make some type of spacer to have the sprocket jut-out a bit. Otherwise the chain will rub against the tread of the tire. The sprockets in the kit have spacers machined into them, and we didn't notice until today when we actually assembled them. |
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#11
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Re: Mystery Sprockets
The ifi sprockets come with the spacers....aka "sprocket mounting hardware"
http://www.ifirobotics.com/sprockets.shtml |
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#12
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Re: Mystery Sprockets
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#13
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Re: Mystery Sprockets
Quote:
I read the one jgannon posted as allowing KoP sprockets obtained from other teams to be used as spares, not as additional parts. |
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#14
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Re: Mystery Sprockets
Quote:
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#15
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Re: Mystery Sprockets
I agree with Karthik, this is a tough ruling for many teams. Veterans who have donated these parts to other teams should do as he suggests and make sure the word gets out.
As others have suggested, one easy solution for teams that need a quick alternative to additional KoP sprockets is IFI's 35A24 kit (scroll down to Drivetrain Sprocket Specifications) for $9.99. |
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