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Mastermind Meets The MS400 C-M

calcutta250

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It seems to me they needed to get the mass of the piston down to be able to create the 14k rpm.
Magnesium is very almost impossible to combust unless its in fine particles.
The ceramic coating is the key I think. It has less friction than bare Al. It it very very hard. And it cam withstand a huge amount of heat before breakdown.
Which brings me to my point. I read somewhere that this was designed for Canadian tree fellers along a right of way or whatever. I feel as the saw is more meant for shorter run times than firewood run times and stress.
But geez it’s a sweet saw. I’d love to have one. I had the opportunity to buy one for 879 I think. But I’m doing echo and husky right now. Oh and a Homelite.

Peace peoples.
 

Woodpecker

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. I read somewhere that this was designed for Canadian tree fellers along a right of way or whatever. I feel as the saw is more meant for shorter run times than firewood run times and stress.

these two statements are at odds with each other. Right of way cutting (especially felling) in most cases is going to be more demanding than standard firewood cutting.
 

Sawdust Man

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I've been running the ms400 all week, (cutting yellow pine 12" to 24") and I'm still really liking it.
Ran my new (to me) 6100 a bit, it's nice and smooth but really chunky and kinda heavy, one tank and I put it back in the truck, (anybody wanna buy a nice ea6100?) also ran a 359 and 346xp for a while, but when they ran outta gas I went back to the ms400 and wondered why I even own those other saws.
That thing is just plain lean and mean!
 

lehman live edge slab

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After talking with some folks who have a better handle on all this stuff than I do, I believe that is Stihl's intention.
Last i heard the intention was to keep both but things can change. Being it shares a large amount of parts with the 362 it really isn’t that difficult to make both. I actually wouldn’t doubt the 362 ended up on the new style cases with an under bored version of the 400 cylinder.
 

lehman live edge slab

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You left out more expensive, which is why you may not see it spread much!
Bet it’s really not that expensive to make the mag alloy piston, in real world it’s holding up well and I’m sure it will be spread around some. Husky also has been testing one for quite some time but I read actual documents on the internet. May have been a weed whip and not a saw but mag pistons none the less.
 

lehman live edge slab

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I was thinking that I might want one and was curious about what a new piston would cost if I ever needed one, I couldn't find a piston but did find a new take off cylinder and piston kit, I better stick to older saws.

View attachment 324757
That’s normal oem top end Stihl price for any of them.
 

lehman live edge slab

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Pre
Bubba and I used a Wiseco crankshaft in his KX250. The Chinese made piece of crap lasted a few months.

No Steve.....they're all the same. They hire the cheapest labor to build the *s-wordtest crap, to sell for as much as the market will bear.
sure everything wiseco farms out everything but their pistons. Should have just stuck with pistons and not sold the other rebranded crap.
 

MustangMike

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Yea, I'd like Stihl saws better if their parts weren't so expensive.

I get frustrated with it also, but then I also look at it from the other side.

I've replaced a lot of burned pistons in Stihl saws, but NEVER in one of my own Stihl saws!

As my Dad used to say, "Quality will be remembered long after the price paid is forgotten".

I still have the 10 mm 044 I purchased new in Dec 1992 and it still runs great. I remember thinking that it was very expensive, but I honestly don't remember what I paid for it. But I'll bet whatever it was, I could sell it for more now, and I've used it for all those years (for 18 years it was my only saw, and I was heating my house with wood).
 

Sawdust Man

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I get frustrated with it also, but then I also look at it from the other side.

I've replaced a lot of burned pistons in Stihl saws, but NEVER in one of my own Stihl saws!

As my Dad used to say, "Quality will be remembered long after the price paid is forgotten".

I still have the 10 mm 044 I purchased new in Dec 1992 and it still runs great. I remember thinking that it was very expensive, but I honestly don't remember what I paid for it. But I'll bet whatever it was, I could sell it for more now, and I've used it for all those years (for 18 years it was my only saw, and I was heating my house with wood).

18 years with only one saw?
Wow, that must'a been rough. lol
 

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