Author Topic: D276 D176  (Read 553 times)

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Offline Eccentric

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Re: D276 D176
« Reply #20 on: August 21, 2015, 03:40:42 am »
Jon is the slot in the black bar 3/8" or 5/16"?  If it's 3/8", then that's one of those 'slim line' bars that Mac sold for both the 10-series (when used with a stud spacer) and the large frame Macs (with no spacer, but with those special bar plates).
-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.

Offline jon1212

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Re: D276 D176
« Reply #21 on: August 22, 2015, 09:02:41 pm »
Aaron,

They are both 5/16(8.2mm). Both type of bars are 404 063, though I have changed out a couple of the 28" to 3/8 pitch tips.
Randy Evans, and Aaron Lynch are muh friends

Offline Eccentric

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Re: D276 D176
« Reply #22 on: August 24, 2015, 08:50:24 pm »
Aaron,

They are both 5/16(8.2mm). Both type of bars are 404 063, though I have changed out a couple of the 28" to 3/8 pitch tips.

Interesting.  I'm surprised they made the D276 bars with tails that wide........although it would more closely match the diameter of the .404-7 rim.  I've seen some long (36"-ish) D276 bars with wide profiles like that.  Fraser has 'em.  Logging veterans.  A fellow could open up those slots to 3/8" and run them on large frame Macs (with the 'slimline' bar plates we've talked about before).

LMK if you need any more 3/8" Windsor 3-rivet tips for those bars.  I still have a bunch, and would gladly trade them for the .404 tips.
-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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