Haven't you heard! The Government shot down an Alien Spacecraft.
And thet have discovered that the spaceship was powered by a futuristic 2 stroke engine!
Now it has been decided that all engines should be 2 stroke now.....
Hope that clears things up for ya, so you don't have to read through this long thread now!
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Now that I don't agree with cost weight or simplicity. Seems to me that hanging all that dead weight on reciprocating mass defeats the idea of light weight. And to think of the seals, extra pistons... However, supercharged two strokes were used quite successfully for years and the sealing problems are no more complicated than any four stroke. It is the easiest way to lube the lower end.

However, I don't think either of these solutions is a good solution for our light weight, high HP engines. LOL, the super charger will give you high HP, but it won't give light weight. The cross head is going to give us neither.

Seems to me that if you want to get rid of the ball bearings and roller bearings in the crank, they could be replaced with hydrostatic bearings that are sealed from the crank case. Seems to me the problem here might be the cost/weight of the hydrostatic pump.

I think that just applying basic technology to existing two strokes gets us where we need to go.
Bryce

 

The Crosshead bearing design is not complicated at all. Nor does it add that much weight. There is still no cam shaft, cam chain, valves, valve springs, rockers,ect. The Crosshead bearing design has been used in external and internal combustion engines for over 100 years. Theres no problem with the seals.
Now pretty much any engine with an external induction system is going to cost more to produce than a naturally aspirated engine.

 

LOL.. the cross head design adds weight in the worst possible place; the reciprocating mass. And any weight is worse than no weight. On the other hand, the camshaft adds very little reciprocating mass and very little rotating inertia. Much preferable to the cross head design.
Bryce

 

LOL.. I would hardly call a cross head design cheap by any means compared to a standard two stroke. And I doubt it is cheaper than a super charger!!!!

Bryce

 

Hmmm, ok then lets see.... You think just by adding a crosshead bearing, that this will make a 2 stroke engine heavier when compared to a similar model 4 stroke?
And you think it will be a more complicated engine?
And cost more to produce as well?
Well I don't agree with any of that.........

 

LMAO!!!!! ha now your just rambling, and showing your lack of knowledge.

 

Well.. lets see.. you are arguing with me about an engine that is as big as my car at the smallest and is bigger than my house as its biggest. And any designing using this technology is going to have a conn rod at least twice as heavy as the conn rod in a like size two stroke. And then you are going to seal the bottom of the cylinder with a sliding seal. Just creating the chamber to seal the cylinder adds weight. Now you are going to beef up the crankshaft, bearings and crankcase to take this additional reciprocating mass. Then you are going to add a pressure lubrication to the lower end. You are going to inject oil to lube the upper end. Now after you do all this, you are not going to make more HP than the same size two stroke. But is easily going to be twice as heavy. Now tell me who is the genius here??

Bryce

 

I might add that a super charger is heavy as well .
So if external induction was used, a turbo would be "the way to go".

The first and perhaps most obvious benefit of turbocharging, is the difference in cost between a supercharger and turbocharger system. One basic comparison in cost comes from an anonymous article on turbocharging a Ford Mustang versus supercharging a Ford Mustang. In this comparison and many other similar ones the turbocharger system is less expensive but only to the trained eye. Superchargers appear to be cheaper because the basic kit only costs $3000 Basic is the key word here, because theres a lot more money that needs to be thrown down this rat hole!Where as the turbocharger basic kit costs $4000. Both big bucks huh?Told ya those external induction systems cost $$$$$$$$$$$$$$$$$$$$$$ And after you buy a mass air meter, cold air induction system and upgrade the fuel system and ignition system, then the supercharger cost more in the end

 

Yes well Bryce, the companies that are developing and incorporating this into their new technology are not building engines the size of "your car" They are building engines to be used in your car. Some of the auto companies are considering using it in their hybrid vehicles....