Chain elongation indicator
grabcad

... the chain. ...The smaller pulley which is joined by a pin-joint to the lower pulley is 11 links away from the upper pulley. The springs and the weight of the smaller pulley always keep the chain tight and the the angle points the elongation occurred.

Chain No-Go gauge
grabcad

... the weak link. ... You try to fit the dowels (that are set at the max tolerance for that type of chain being tested) on the chain at the visual wear marks, and IF it fits on of the chain you know the chain has been worn, and is time for new chain.

chain inspection gauge
grabcad

For inspection the link chain, use the chain limit gauge with which chain elongation and wear can be checked. This example is for 7x20 Chain Sizes in mm and the gauge length measured over an 5 links. ... Same idea can be applied to all chain sizes and...

Bike Chain Gauge
thingiverse

My other gauge will show if the chains so worn that the cassette and chainrings require replacing too - but if your chain is slack on both sides of this gauge chances are you're past the point of a cheap fix! Use one or two more shells than usual...

Chain Wear Gauge // Rohloff Style
thingiverse

A gauge to measure the wear on your bike chain. How it works: If the 0.075mm site slips in between your chain, you should replace it. It the 0.10mm site slips in, you should to replace the chain and your sprocket. ... It neither falls in, your're...

Bike Chain Gauge (solid remix)
thingiverse

FactorStandard's bike chain gauge (http://www.thingiverse.com/thing:2108142) is an elegant and useful design, but for me was a bit slow to print because of the text running through it and it was stressing my slightly dodgy Bowden extruder,...

Chain
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