Thread: Sprocket chain tension
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Unread 03-03-2016, 17:55
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FRC #0088 (TJ2)
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Re: Sprocket chain tension
I almost always design in adjustment of one sprocket in the loop of the chain that can provide at least 2.5 links of overall chain length change (for #25 that is .625" of chain length change). This allows for having tight chain and no half links (blek, pew, yuke! we hates half links! don't make us use half links master...)

If my back is to a wall and I can't design in chain tensioning, I can get over it but I try very hard to get it tight by design (often designing the center distances to be a LITTLE too tight, then filing axle holes to be a little oval so that the chain can fit).

Whatever I do, even with good chain tensioning, I am sure to make sure that the wrap on all torque transferring sprockets is at least 120 degrees.

Good luck,
Dr. Joe J.
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