Author Topic: 2 2 Man Saws  (Read 694 times)

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Offline Eccentric

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Re: 2 2 Man Saws
« on: July 13, 2015, 12:44:12 am »
Looks like a couple of Disston/Mercury KB-7AY saws.  I have a 1947 KB-7AY (11HP).  Got a 72" bar for it.  They'll pull more.  3/4" chain.  15ci/245cc twin.  Powerhead is something like 70 pounds by itself.  Guys would run up to 10' bars on one powerhead.................and up to 15' bars with two powerheads....
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

 

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