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Re: chains
#25 ANSI chain has a working load of 140lbs
#35 ANSI chain is 480lbs
then next after that is #40 at 810lbs
So you get a significant increase in strength going from #25 to #35
I think it's possible with some FIRST bot setups to take #25 past yield
or at least well into the built in safety factor whatever that may be
But I can't see harming the #35 with a strong drive train under some
shock loads.
I think #40 is just overkill and too much weight.
FIRST provided #35 chain in our kit last year, I think it was 20'.
along with some #35 sprockets. So it's not a bad idea to stick with
#35 just in case you want to use them.
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