STIHL MS 400

[MustangMike]

I opened mine up a bit before I even started it, but I'm very impressed with the 462.

 

[deye223]

If I retire the 460 I think a ported 661 will take it's place if I can't get a very clean 461

 

[BonScott46]

@nohoff any more info on release dates for Europe?

 

[nohoff]

Total silence about the MS 400 at the moment.

 

[BonScott46]

Total silence about the MS 400 at the moment.

Weird.

 

[nohoff]

Stihl has a lot of trouble at the moment with the integration of Viking.
They had to revisit nearly every part of their Viking products to remove the Viking signs and put Stihl on it.
This took a lot of manpower that was not available for product improvments or new products.

 

[Philbert]

They had to revisit nearly every part of their Viking products to remove the Viking signs and put Stihl on it.

Case in point . . .





Philbert

 

[shadco]

So they are going green?

doink.

.

 

[Evansaw]

Sounds like it will be a great saw, and I'm also wondering what the weight will be. However, since I have both a 261 Ver II and a 462, I'm not sure that I will need one! Those 2 saws make a great combo.

Mike i ve already posted the power and weight months ago.

 

[Evansaw]

Here are some pic's of the ms400 jug, looks like 462 style now

Hi Steph

Hope you’re doing well

Is this a 362 jug or the 400?



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[MustangMike]

Mike i ve already posted the power and weight months ago.

Pretty sure my post was also months ago!!!

 

[nohoff]

This picture is from the MS 400 repair guide.

 

[RI Chevy]

Looks like lots of blowby on the slug.

 

[cus_deluxe]

magnesium piston eh?

 

[Backtroller]

I’m not sure how to hot link this address but it is an interesting article...I guess it works now

https://www.highpowermedia.com/blog/3911/magnesium-as-a-piston-material

 

[lehman live edge slab]

I read about the magnesium pistons a few places too and I’m still not seeing a benefit myself. Husqvarna was working on one with some casting place and a university also. The piston will be lighter which will slow faster rev but won’t the lighter piston take away torque because less mass. The piston will need to be thicker for equal strength and it dissipates heat 60% slower which I also see as a drawback. I realize the coating is to probably prevent the heat from soaking into the piston as much but it still can’t transfer it away as fast even if it’s absorbing less. Also is this going to be an oem only piston since the aftermarket is going to probably still use aluminum and the cylinder will be designed around the magnesium piston due to different expansion rates and maybe even ring materials.

 

[lehman live edge slab]

Also what the heck do they mean by the piston doesn’t need to be removed to remove the rings?

 

[MustangMike]

In a chainsaw, you can just remove the cylinder!

 

[lehman live edge slab]

Do they really need to explain that to the supposedly trained technician working on your saw? If they do people are in trouble, I was more thinking of some new way to change rings being explained.

 

[andyshine77]

Rotational mass, and stroke effects torque. A lighter piston will reduce reciprocating mass, which may increase bottom end duribility. I'm also wondering if thermal stability isn't the factor here, as strato piston seem to have some issues with that, do to increase size/weight and temperature fluctuations.