Expert: Dan Griffin - 5/25/2010

Question
Hi Dan;
Can you tell me how to find out how much tension a chainsaw chain will take before breaking.
That is what force a chain can with stand before a link snaps, not to be confused with proper tension made by the tension adjuster for proper cutting.
Thanks.

Sincerely
Hendrik

Answer
Hendrick,  I don't know where this one is headed.  There are sure a lot of variables,

Here's one idea:
get two sprockets that fit the chain.  Attach one (top sprocket) to something that exceeds the failure point of the chain.  Suspend chain on the sprocket.  Install #2 sprocket at the bottom of the loop.  Create a device suspended from the bottom sprocket that provides a way to stack weights until failure.

Same or similar:
Create a way to use a hydraulic jack that has a pressure gauge attached.  You will need to make a math calculation to tons of force based on the pressure and square inches of ram when the chain fails.

It would be important to apply a slow measurable tension that is not damaging to the metal of the chain as you seek its failure point.

If this is not clear, please ask again.