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Deleted member 149229
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On my 490 I did the normal muff mod and carb retune. Then converted it from .325 chain to 3/8 lp, totally different saw, it screams.
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Agent smith
NJ tornado enthusiast
Nice. I'll tear it apart, study things and then go from there with mods
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Deleted member 149229
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Muff mod is easiest of all Echo. Take muff off saw, remove deflector, pull out baffle, cut out restrictor metal in deflector. Done. You will need a remachined rim for the 3/8 lp to work. Nate sells them.https://performanceoutdoorequipment.com/m/index.htm
You can't do it, it's just a homeowner saw
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Agent smith
NJ tornado enthusiast
You can't do it, it's just a homeowner saw
Hahahaha!
Someone had to say it and since I was here
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I've been using 8 pins on my McCullochs and if you can get the chain with just one more link 20" 71dl ect... I almost ran out of adjustment with a 72dl .McCulloch and echo use the same bar+chain combos , I was able to get a 18 inch bar with 66dl to fit by shaving some metal off the tail of the bar.
I dont know how yor saw will behave with an 8 pin rim but it's quite noticeable on an old saw with the slower motor , but the older saws have a massive amount of grunt so it really doesn't matter how much torque you sacrifice for chain speed.
Pro mac 55 18" bar 8pin rim good!
Pro mac 700 20" bar 8pin rim good!
I dont know how yor saw will behave with an 8 pin rim but it's quite noticeable on an old saw with the slower motor , but the older saws have a massive amount of grunt so it really doesn't matter how much torque you sacrifice for chain speed.
Pro mac 55 18" bar 8pin rim good!
Pro mac 700 20" bar 8pin rim good!
Justin Taylor
ArboristSite Guru
Wasn't able to record but the difference between the 7-8 is insane fully barred 20in bar in oak with my 440 clone
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Deleted member 149229
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Got the 8 pin rim and the 70 dl chain fits so I’ll be able to run same bar and chain for test. Today is monsoon, maybe tomorrow.
James Miller
Addicted to ArboristSite
interested in results seeing as are saws run almost identical. Should have got video of them running back to back at the GTG.
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Deleted member 149229
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I’ll get the vids posted later, well, the wife will upload to YouTube later, I’m computer illiterate. To me the 7 pin was the clear winner. Same saw, chain and bar. I could hear and feel the saw slow down with the 8 pin. Ran it in dry, what we call around here, rock maple, not oak but still pretty hard.
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Deleted member 149229
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Deleted member 149229
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Yup definitely bogs the saw down , but if you just let it feed with out any pressure it should cut faster?
Agent smith
NJ tornado enthusiast
If you time the cuts though you're a pretty consistent 4 seconds with both sprockets......Interesting
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Deleted member 149229
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On the 7 pin I just let it do it’s thing. On the 8 pin I could hear/feel it slowing so I started pushing on it. I’m no expert but the 7 pin just felt/sounded better. In all honesty maybe the 8 pin would have been better if I had played with the tune for it but I left the same as the 7 pin settings.
