new mid saw needed...ms362 or ms 391?

[Eddy_t]

How does one ring wear quicker ? Sorry but I don't understand this bit if it is doing the same revs as the other saw it just seems less to replace to me.

 

Easy, all of the force is dissipated over one ring, putting extra pressure on it, as it has less surface area, and huskys don't do the same revs, they do more! So more wear on less surface area means it doesn't last as long, I'm really not explaining this well! Despite a thin film of two stroke oil, it is metal on metal, and a larger surface area will last longer

 

 

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[Stubby]

Easy, all of the force is dissipated over one ring, putting extra pressure on it, as it has less surface area, and huskys don't do the same revs, they do more! So more wear on less surface area means it doesn't last as long, I'm really not explaining this well! Despite a thin film of two stroke oil, it is metal on metal, and a larger surface area will last longer

 

 

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Explained perfectly .

[wyk]

Easy, all of the force is dissipated over one ring, putting extra pressure on it, as it has less surface area, and huskys don't do the same revs, they do more! So more wear on less surface area means it doesn't last as long, I'm really not explaining this well! Despite a thin film of two stroke oil, it is metal on metal, and a larger surface area will last longer

 

 

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By the same token, with two rings, how does the top ring get lubricated? By only the ring gap? Via the mix that enters through the transfers for a fraction of a fraction of a second and then is burned off? How does the top ring on a dual ring system not do more damage to itself and the cylinder than a single ring? The bottom ring may last longer, but will the cylinder last longer?

[WoodED]

I really recommend the 560xp, fantastic saw, we have 560xp's and ms362's, the 560xp's get picked up first everytime,

 

 

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[Hedge hunter]

I really recommend the 560xp, fantastic saw, we have 560xp's and ms362's, the 560xp's get picked up first everytime,

 

 

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is there 1 with a 16" bar on you have used?

[WoodED]

We have 15's on ours, flies through the cut,

 

 

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[Hedge hunter]

We have 15's on ours, flies through the cut,

 

 

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hmmmmmmmmmm...........

 

thanks

[Stubby]

hmmmmmmmmmm...........

 

thanks

 

I have 15" and 18" . 15" works good on an 8 pin and 18" works good on a standard 7 pin .

[Eddy_t]

is there 1 with a 16" bar on you have used?

 

Why 16? What's that extra inch gonna give you? But you can get 16" powermatch and prolite Oregon bars

 

 

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[Eddy_t]

By the same token, with two rings, how does the top ring get lubricated? By only the ring gap? Via the mix that enters through the transfers for a fraction of a fraction of a second and then is burned off? How does the top ring on a dual ring system not do more damage to itself and the cylinder than a single ring? The bottom ring may last longer, but will the cylinder last longer?

 

Easy, the oil never is completely burned off, in fact, as the petrol burns, the mix will separate until flashpoint is reached, causing it to adhere to the cylinder walls, this is also true BETWEEN the rings, otherwise even on a husky, the top of the ring would skin the plating off. Then you can factor in fuels as well, a lower octane fuel has a lower flashpoint so it lubricates better

 

 

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