Mountainman
ArboristSite Operative
What's the deal on this? Does anyone know how it works? I heard it's just coming out on trimmers in the near future. But is this the wave of the future for saws? I'm not sure I like the sound of it.
Stihl's new 4-Mix engine
- Thread starter Mountainman
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hybrid 4
Are you referring to the hybrid 4 stroke motor they have been showing? I saw one at an equipment show this fall and had it explained as a 2 stroke motor with a small amount of fuel being routed around the cylinder to the bottom and fed in as a lube which then is consumed as fuel with the next piston firing. They were taking preorders for the line trimmer, delivery ?. I tried the demo out and it seemed smooth, low vibration mounting was nice. They had a cut away motor to show at the booth but I can't find any info on the website about it yet.
Are you referring to the hybrid 4 stroke motor they have been showing? I saw one at an equipment show this fall and had it explained as a 2 stroke motor with a small amount of fuel being routed around the cylinder to the bottom and fed in as a lube which then is consumed as fuel with the next piston firing. They were taking preorders for the line trimmer, delivery ?. I tried the demo out and it seemed smooth, low vibration mounting was nice. They had a cut away motor to show at the booth but I can't find any info on the website about it yet.
Stihl website
Couldn't find any info on the Canadian Stihl website bu as I gander at the USA version I find a link:
http://www.stihlusa.com/news_fourmix.html
cheers.
Couldn't find any info on the Canadian Stihl website bu as I gander at the USA version I find a link:
http://www.stihlusa.com/news_fourmix.html
cheers.
Check out shindaiwas site. The have good diagram of how a hybrid 2/4 cycle works.
Basicaly the carb is hooked up to the crankcase via a reedvalve. There is a second reedvalve in the crank case itself that opens into a transfer port that feeds the intake valve.
Basicaly the carb is hooked up to the crankcase via a reedvalve. There is a second reedvalve in the crank case itself that opens into a transfer port that feeds the intake valve.
4 mix
No reed valves in this one. Regular valve train, cam, pushrods, rocker arms, valves. Seems like a lot for a small engine, but the reviews are good so far. tell you next year if I see one by then. Oh yeah, school on the 21st, the 4 mix is the main subject.
No reed valves in this one. Regular valve train, cam, pushrods, rocker arms, valves. Seems like a lot for a small engine, but the reviews are good so far. tell you next year if I see one by then. Oh yeah, school on the 21st, the 4 mix is the main subject.
Stihltech, I was refering to the shin design. I havent seen the scematics of the stihl, but I assumed it worked the same. Could you describe to us the way it functions?
eyolf
Addicted to ArboristSite
There was a discussion on this topic a while back; I posted links to a couple of articles about this new breed (hope they're still good), and some other cogent discussion.
http://207.44.158.62/~admin4/showthread.php?threadid=5167
http://207.44.158.62/~admin4/showthread.php?threadid=5167
fun_chopper
ArboristSite Operative
WOW!!!!! a 4 stroke trimmer..cant wait untill they come out with a v-twin chainsaw!!!
The technology going into the internal combustion engine right now is amazing! Stihl with a small 4 stroke, volkswagon with a w-8 (this one is incredable!!) what will they think of next?-Matt
The technology going into the internal combustion engine right now is amazing! Stihl with a small 4 stroke, volkswagon with a w-8 (this one is incredable!!) what will they think of next?-Matt
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