The Poster was not asking about chain saws, or motorbike engines,
but why two cycles couldn't be use on a larger scale. And that answer
again is pollution: http://www.dieselnet.com/standards/us/light.html and
diesel-powered cars are banned in California:
http://www.detnews.com/2005/autosins.../C02-51826.htm As an
owner operator I've adjusted the rack and changed the buttons on every
tractor I've driven, even did a few in frames on my trucks:
http://www.----------.com/rextrans.jpg
http://www.----------.com/kenworth.jpg
http://www.----------.com/white.jpg
http://www.----------.com/mack.jpg
I bet you can't tell me what a button or rack is!
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

calcerise@hotmail.com wrote:
>
> The two cycle crankcase scavenged engine used in snow blowers, model
> airplanes, chain saws, has nothing to do with two cycle diesels which
> run dry crankcases and use plenum scavenging with a Roots (most
> Detroits) or centrifugal (Foden, a few odd Detroits, Junkers Jumo). Two
> cycle spark engines using direct injection and pressure oiling with
> synthetic oils are much, much cleaner than they were years ago, which
> is the only reason they are still allowed in outboards.
>
> You don't know much about Detroit Diesels either. A 6-71 does not have
> 92 cid/cyl and does not have twelve pistons. A 12V-92 does.
> Turbocharged two cycle diesels only use the mechanical Roots blower for
> starting, as the turbos maintain positive plenum pressure from there
> out. In fact racing Detroits now have no mechanical blower-they use air
> impingement for starting.
>
> it may interest you to know that the ONLY Detroit Diesel engine
> meeting the most stringent new heavy vehicle standards for emissions is
> the 6V92T DDEC.

 

"Brian Foster" <brianfoster@houston.rr.com> wrote in message
news:FZjte.46691$j51.34409@tornado.texas.rr.com...
> Just got rid of my 15 year old leaf blower. Something like a 30cc 16/1
> mixture 15 year old Craftsman.
>
> Bought a new Poulan 40/1 33 cc blower.
>
> Question is the 2 cycle VS 4 cycle engine. What are the pros vs cons of
> both? I realize mixing oil & gas would be a hassle for most car owners but
> what other negatives are there for 2 cycle engines?
>

They stink, they smell bad, and they smoke. They have a bitch of a time
passing the smog laws of pretty much everywhere, and they stink, smell bad,
and smoke. Mixing gas and oil is not biggie, the major manufacturers figured
out a very long time ago how to meter the oil into the fuel supply, so the
operator simply adds gas to one tank and oil to another, and the rest
magicly happens all by itself. But, none of this gets around the stench, the
stink, and the smell. Then, there's the noise.





> I have to believe that power to weight ratio is very high for 2 cycle vs 4
> cycle. Do 2 cycle engines wear more than 4 cycle?
>
> I guess I'm looking for the science behind these two types and how they
lend
> themselves to automotive applications.
>
> Thanks, I appreciate the combined knowledge of the group.
>
>

 

"Brian Foster" <brianfoster@houston.rr.com> wrote in message
news:FZjte.46691$j51.34409@tornado.texas.rr.com...
> Just got rid of my 15 year old leaf blower. Something like a 30cc 16/1
> mixture 15 year old Craftsman.
>
> Bought a new Poulan 40/1 33 cc blower.
>
> Question is the 2 cycle VS 4 cycle engine. What are the pros vs cons of
> both? I realize mixing oil & gas would be a hassle for most car owners but
> what other negatives are there for 2 cycle engines?
>

They stink, they smell bad, and they smoke. They have a bitch of a time
passing the smog laws of pretty much everywhere, and they stink, smell bad,
and smoke. Mixing gas and oil is not biggie, the major manufacturers figured
out a very long time ago how to meter the oil into the fuel supply, so the
operator simply adds gas to one tank and oil to another, and the rest
magicly happens all by itself. But, none of this gets around the stench, the
stink, and the smell. Then, there's the noise.





> I have to believe that power to weight ratio is very high for 2 cycle vs 4
> cycle. Do 2 cycle engines wear more than 4 cycle?
>
> I guess I'm looking for the science behind these two types and how they
lend
> themselves to automotive applications.
>
> Thanks, I appreciate the combined knowledge of the group.
>
>

 

"Brian Foster" <brianfoster@houston.rr.com> wrote in message
news:FZjte.46691$j51.34409@tornado.texas.rr.com...
> Just got rid of my 15 year old leaf blower. Something like a 30cc 16/1
> mixture 15 year old Craftsman.
>
> Bought a new Poulan 40/1 33 cc blower.
>
> Question is the 2 cycle VS 4 cycle engine. What are the pros vs cons of
> both? I realize mixing oil & gas would be a hassle for most car owners but
> what other negatives are there for 2 cycle engines?
>

They stink, they smell bad, and they smoke. They have a bitch of a time
passing the smog laws of pretty much everywhere, and they stink, smell bad,
and smoke. Mixing gas and oil is not biggie, the major manufacturers figured
out a very long time ago how to meter the oil into the fuel supply, so the
operator simply adds gas to one tank and oil to another, and the rest
magicly happens all by itself. But, none of this gets around the stench, the
stink, and the smell. Then, there's the noise.





> I have to believe that power to weight ratio is very high for 2 cycle vs 4
> cycle. Do 2 cycle engines wear more than 4 cycle?
>
> I guess I'm looking for the science behind these two types and how they
lend
> themselves to automotive applications.
>
> Thanks, I appreciate the combined knowledge of the group.
>
>

 

"Brian Foster" <brianfoster@houston.rr.com> wrote in message
news:FZjte.46691$j51.34409@tornado.texas.rr.com...
> Just got rid of my 15 year old leaf blower. Something like a 30cc 16/1
> mixture 15 year old Craftsman.
>
> Bought a new Poulan 40/1 33 cc blower.
>
> Question is the 2 cycle VS 4 cycle engine. What are the pros vs cons of
> both? I realize mixing oil & gas would be a hassle for most car owners but
> what other negatives are there for 2 cycle engines?
>

They stink, they smell bad, and they smoke. They have a bitch of a time
passing the smog laws of pretty much everywhere, and they stink, smell bad,
and smoke. Mixing gas and oil is not biggie, the major manufacturers figured
out a very long time ago how to meter the oil into the fuel supply, so the
operator simply adds gas to one tank and oil to another, and the rest
magicly happens all by itself. But, none of this gets around the stench, the
stink, and the smell. Then, there's the noise.





> I have to believe that power to weight ratio is very high for 2 cycle vs 4
> cycle. Do 2 cycle engines wear more than 4 cycle?
>
> I guess I'm looking for the science behind these two types and how they
lend
> themselves to automotive applications.
>
> Thanks, I appreciate the combined knowledge of the group.
>
>

 

They're using the two cycle tone ringer for cell phones in Europe.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Jeff Strickland wrote:
>
> They stink, they smell bad, and they smoke. They have a bitch of a time
> passing the smog laws of pretty much everywhere, and they stink, smell bad,
> and smoke. Mixing gas and oil is not biggie, the major manufacturers figured
> out a very long time ago how to meter the oil into the fuel supply, so the
> operator simply adds gas to one tank and oil to another, and the rest
> magicly happens all by itself. But, none of this gets around the stench, the
> stink, and the smell. Then, there's the noise.

 

They're using the two cycle tone ringer for cell phones in Europe.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Jeff Strickland wrote:
>
> They stink, they smell bad, and they smoke. They have a bitch of a time
> passing the smog laws of pretty much everywhere, and they stink, smell bad,
> and smoke. Mixing gas and oil is not biggie, the major manufacturers figured
> out a very long time ago how to meter the oil into the fuel supply, so the
> operator simply adds gas to one tank and oil to another, and the rest
> magicly happens all by itself. But, none of this gets around the stench, the
> stink, and the smell. Then, there's the noise.

 

They're using the two cycle tone ringer for cell phones in Europe.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Jeff Strickland wrote:
>
> They stink, they smell bad, and they smoke. They have a bitch of a time
> passing the smog laws of pretty much everywhere, and they stink, smell bad,
> and smoke. Mixing gas and oil is not biggie, the major manufacturers figured
> out a very long time ago how to meter the oil into the fuel supply, so the
> operator simply adds gas to one tank and oil to another, and the rest
> magicly happens all by itself. But, none of this gets around the stench, the
> stink, and the smell. Then, there's the noise.

 

They're using the two cycle tone ringer for cell phones in Europe.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Jeff Strickland wrote:
>
> They stink, they smell bad, and they smoke. They have a bitch of a time
> passing the smog laws of pretty much everywhere, and they stink, smell bad,
> and smoke. Mixing gas and oil is not biggie, the major manufacturers figured
> out a very long time ago how to meter the oil into the fuel supply, so the
> operator simply adds gas to one tank and oil to another, and the rest
> magicly happens all by itself. But, none of this gets around the stench, the
> stink, and the smell. Then, there's the noise.

 

Where do you mix the oil in a cell phone?




"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:42B8BA0B.23DBAECD@***.net...
> They're using the two cycle tone ringer for cell phones in Europe.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Jeff Strickland wrote:
> >
> > They stink, they smell bad, and they smoke. They have a bitch of a time
> > passing the smog laws of pretty much everywhere, and they stink, smell
bad,
> > and smoke. Mixing gas and oil is not biggie, the major manufacturers
figured
> > out a very long time ago how to meter the oil into the fuel supply, so
the
> > operator simply adds gas to one tank and oil to another, and the rest
> > magicly happens all by itself. But, none of this gets around the stench,
the
> > stink, and the smell. Then, there's the noise.