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Unread 16-01-2004, 16:40
Lea DeFoote Lea DeFoote is offline
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Re: Preseason Rant: Don't Go with #25 Chain in the last leg of your drive train!

I'm curious - It doesn't look like anyone here has mentiond who MANUFACTURES the chain that they use.

Just because a chain meets ANSI spec, does not mean they are created equal. The life expectancy of a #25 chain (or any size chain for that matter) will vary greatly depending on who made it. I suspect that this argument might quickly be shown to be apples vs. oranges if the manufacturer were included in the statements.

Team x:
"We've been using Cubic Zirconium Brand #25 chain for years and we've never broken one yet."

Team y:
"You must be wrong, our Muchocheapo #25 chains break every round!"

The problem with anecdotal evidence is that you never seem to get the whole anecdote.
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Unread 16-01-2004, 21:41
GregT GregT is offline
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Re: Preseason Rant: Don't Go with #25 Chain in the last leg of your drive train!

Quote:
Originally Posted by Lea DeFoote
I'm curious - It doesn't look like anyone here has mentiond who MANUFACTURES the chain that they use.

Just because a chain meets ANSI spec, does not mean they are created equal. The life expectancy of a #25 chain (or any size chain for that matter) will vary greatly depending on who made it. I suspect that this argument might quickly be shown to be apples vs. oranges if the manufacturer were included in the statements.

Team x:
"We've been using Cubic Zirconium Brand #25 chain for years and we've never broken one yet."

Team y:
"You must be wrong, our Muchocheapo #25 chains break every round!"

The problem with anecdotal evidence is that you never seem to get the whole anecdote.
There aren't a whole lot of roller chain manufacturers out there.
If it meets ANSI standards, it meets ANSI standards (at a minimum). Of course some are better then others. Some brands / quality levels will also last longer then others, but I don't think FIRST robots run enough to see any of those effects. I may be wrong. I think most of the break/no break differences are coming from engineering and control rather then chain quality.

Greg
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