Stihl 2 mix engine

[Timber boy]

Hi everyone I have been offered a stihl ms 461 today and I just wandered what this 2-mix engine is all about is it any different from the normal 2 stroke or not ?

[Eddy_t]

Look on the stihl website, 2-mix is good, don't touch 4-mix they're PITA to adjust

 

 

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[GardenKit]

A two-mix engine is merely a 2 stroke engine, in other words it works on the 2 cycle principle as opposed to 4 cycle.

 

Two-mix is the name given by Stihl to their new generation, low emission engines which have fancy air induction systems which put a buffer of clean air in between fuel charges to purge the system efficiently.

 

Other manufacturers have variations with different names.

[spudulike]

A two-mix engine is merely a 2 stroke engine, in other words it works on the 2 cycle principle as opposed to 4 cycle.

 

Two-mix is the name given by Stihl to their new generation, low emission engines which have fancy air induction systems which put a buffer of clean air in between fuel charges to purge the system efficiently.

 

Other manufacturers have variations with different names.

 

Interesting point that, I think many believe the strato engines are all to do with performance but it is in fact a system to fill the upper part of the transfers with fresh air so this is used to drive the exhaust gases out of the cylinder (Scavanging) and not fuel air vapour as in conventional engines - some of which will escape causing polution!

[Garyjp]

Strato charge: stihl

X-torq: husqvarna

 

Actual name of technology is airhead. Not to be confused with a blonde trying to recite the 2 times table lol

 

 

 

 

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[spudulike]

Strato charge: stihl

X-torq: husqvarna

 

Actual name of technology is airhead. Not to be confused with a blonde trying to recite the 2 times table lol

 

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Same technology, uses channels in the piston sides to draw fresh air from the inlet side and pass it through to the transfer tops so the charge of scavanging gas contains pure air at the top so no fuel vapour is lost when scavanging the spent exhaust gases and hence cleaner burn engine.

 

Air head.....very apt name:thumbup:

[doobin]

Had no problems whatsoever with 2 years hard use of a pair of FS460s. Highly recommended.