ChainLightning
Vintage Saw Stalker
A friend told me this. This new gas sucks so bad that Carb's can't handle it no more. Any more info on this?
A friend told me this. This new gas sucks so bad that Carb's can't handle it no more. Any more info on this?
They have already introduced a brushcutter with EFI
If it's a materials compatibility issue I don't see why EFI would be some magic bullet. A carb makes more sense to me in a saw, as I can't imagine the added weight and complexity of a pump would be worth it. What's important is some kind of feedback system to adjust the mixture, which is what I think they're starting to do now with carbs.
OTOH, if they've been really clever maybe they can do injection without too much complexity, and if they could manage to do direct injection into the cylinder then it could be a big improvement.
If they did direct injection into the cylinder then you would have to put oil into the crank case, loosing all position running.
If they did direct injection into the cylinder then you would have to put oil into the crank case, loosing all position running.
so why not direct into the crank case?
Kinda lost me on this one ... why would the need for oil in the crankcase inhibit all-position running?
The Boxster-style engines used by Porsche and Subaru (and others) are flat configurations and have oil in ccase .. :msp_confused:
Kinda lost me on this one ... why would the need for oil in the crankcase inhibit all-position running?
The Boxster-style engines used by Porsche and Subaru (and others) are flat configurations and have oil in ccase .. :msp_confused:
For the same reason they don't make 4-stroke chain saws now. Turn it upside down and oil hits the piston. It froths the oil, hurts horse power and and some slips by the rings and makes hell of a smoke cloud.
Hey,
EFCO -Italy-
has certain saw models which are fuel injected using their patented Burn Right devise. It is a special chamber that accumulates fuel mix using a reed valve, and some of the carb mix is sent to the crankcase to lube the lower end bearings, meanwhile, the pressure pulses from the piston charge up the fuel accumulation chamber and use sonic waves to cause the fuel to inject into the chamber through a small port .
I think the MT4000 is a model that has this devise.
No electronics
No bulky parts
No service or adjustments needed
.. didn't Stihl buy carb maker Zama?
Related to this topic?
By the way what are the latest thoughts on VHS or Betamax?
I haven't seen anything factual, but I've 'heard' from some friends working in the industry that Stihl owns Zama....but not Zama USA. Who knows?
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