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Big Boy with Stephenson Second engine are going.


Ride it where ?

Andrew

ps Need new electronic valave drive system.

Horseshoe curve, Sullivan's curve or Barranca del Cobre...

Thinking about links, I remember a single overhead cam twin that NSU built for a very small car, in the late 50's or early 60's, I've actually seen one, instead of gears or a chain to drive the overhead cam - it used a link.

Carlos wrote:Thinking about links, I remember a single overhead cam twin that NSU built for a very small car, in the late 50's or early 60's, I've actually seen one, instead of gears or a chain to drive the overhead cam - it used a link.

So, I remember this small car perfectly .....

Advantages of half rotate pumps are additional possible regulations.
In normal piston pump, we have two elements definition pumps – diameter of piston and stroke piston In half rotate pump we have too same elements: diameter “piston” and long “piston” and additional important possible regulations TORQUE of drive pump on arm with some hole... This same on crankshaft side
This regulation are without additional gear .
For salt water I think better solution made aal this pump PCW , or ABS, or propose - ceramic






Regards Andrew

Without any cogged gear .Last I don't prefer cogged gear.
Animation drive truck without any cogged wheel.
Rod differ, two clutch ( maybe hydraulic)and half rotate engine ,same parameters "Hercules C130" - Vintake= 250 liter. Without any gearbox.
For truck are good parameters.



Regards Andrew

Feliks wrote: But it, you know it definitely :



Regards Andrew

Isn't this basically desmodromic valve actuation (i.e. no springs)?.. the difference being you've used pistons instead of valves... yes this design does mean that when the "valve" (inatke and exhaust pistons) are at full lift they don't get in the way of the air flow.... the problem is when the "valve" (small pistons) are at part lift the flow path through them is very poor... so the overall ability of an engine with pistons for valves to "suck" in (allow in!) air is worse..... The beauty of poppet valves is the air flow through them at part lift is pretty good...

The lift curve is also limited to that of a sin curve.... modern cam's have very steep ramp angles to get the valve to full lift as quickly as possible...

Also the intake/exhaust port geometry will be poor (since it has to be cylindrical to allow the "valve pistons" to move up and down)....

The lift curve/equivalent cam profile looks very inflexible, but also the absolute inertia of the pistons could be quite limiting as they again have to accelerate and decelerate with much more mass than traditional valvetrains, albeit without the variable aspects of the valve springs. Did the designs with rotary valve 'bobbins' get anywhere? For each chamber, a spun bobbin overhead in place of the normal valve heads and seats would expose inlet and exhaust ports in turn removing the reciprocating mass issue and deleting the springs. Just not sure about wear, sealing and heat transfer, but looked interesting

My grandfather worked as engineer on railroad .......
Unfortunately, it has died before I have been born ..




Andrew

What is this?




This is a hydraulic pump of widmill

Manner of utilization is next my proposal instead of mechanical transmission
in producing windmills electric current :Hallf Rotete Pump
Main principle of operation on following drawing and has enclosed animation
Solution has many advantages from haf rotate pump. Expensive
substitute is first most important and noisy, emergency transmission
of mechanical windmill .
It is presented next advantage on former drawing
for one dynamo driven manner of connection
of whole farm of windmill hydraulic engine serious too.
This way, we save several most expensive elements of windmills,
treating such farm windmill as integrity .( Complex design)



Regards Andrew

Feliks,

Having some method to accumulate and store power, as well as provide for a continuously variable speed ratio drive for the rotor, is very important for efficient and economical operation of wind turbines.

I have seen hydrodynamic variable speed transmissions for large wind turbines:
http://www.voithturbo.de/wind-technology_product.htm

And I have seen compressed air storage concepts for absorbing/releasing excess wind power: http://www.energystorageandpower.com/caes_overview.html

But I have yet to see an economically viable hydrostatic concept. If your concept is truly practical, it would be more cost effective than compressed air and more efficient than hydrostatics.

Nihil nove sub sole.

Star hydraulic or oscillating dynamo.


Regards Andrew

Feliks,

My Latin is very poor. I know the first two words Nihil (nothing) and nove (nine), but I don't understand the rest of the phrase.

I guess the Polish public school system is better than here in the U.S.!

Regards,
Terry

Nil carborundum - don't let the buggers grind you down. Not sure if this is particularly accurate though

riff_raff wrote:Feliks,

My Latin is very poor. I know the first two words Nihil (nothing) and nove (nine), but I don't understand the rest of the phrase.

I guess the Polish public school system is better than here in the U.S.!

Regards,
Terry

But I do not know, but they have instructed me in this school too " Inter puellarum pedes,puerorum volutas est "
Please, ask , who knows Latin, it signifies that

Andrew

P.s. Thanks for a nice links